Fix UUID casting issues in post, notification, and category repositories

- Replace NULLIF with CASE WHEN for proper UUID casting
- Fix missing ::uuid casting in WHERE clauses
- Resolve 'operator does not exist: uuid = text' errors
- Focus on post_repository.go, notification_repository.go, and category_repository.go

_tmp_server/main.go

@@ -0,0 +1,309 @@
+package main
+
+import (
+	"context"
+	"net/http"
+	"os"
+	"os/signal"
+	"strings"
+	"syscall"
+	"time"
+
+	aws "github.com/aws/aws-sdk-go-v2/aws"
+	awsconfig "github.com/aws/aws-sdk-go-v2/config"
+	"github.com/aws/aws-sdk-go-v2/credentials"
+	"github.com/aws/aws-sdk-go-v2/service/s3"
+	"github.com/gin-contrib/cors"
+	"github.com/gin-gonic/gin"
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/patbritton/sojorn-backend/internal/config"
+	"github.com/patbritton/sojorn-backend/internal/handlers"
+	"github.com/patbritton/sojorn-backend/internal/middleware"
+	"github.com/patbritton/sojorn-backend/internal/realtime"
+	"github.com/patbritton/sojorn-backend/internal/repository"
+	"github.com/patbritton/sojorn-backend/internal/services"
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+func main() {
+	// Load Config
+	cfg := config.LoadConfig()
+
+	// Logger setup
+	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr, TimeFormat: time.RFC3339})
+
+	// Database Connection
+	// Check if DATABASE_URL is set, if not try to load from .env
+	if cfg.DatabaseURL == "" {
+		log.Fatal().Msg("DATABASE_URL is not set")
+	}
+
+	pgxConfig, err := pgxpool.ParseConfig(cfg.DatabaseURL)
+	if err != nil {
+		log.Fatal().Err(err).Msg("Unable to parse database config")
+	}
+
+	dbPool, err := pgxpool.NewWithConfig(context.Background(), pgxConfig)
+	if err != nil {
+		log.Fatal().Err(err).Msg("Unable to connect to database")
+	}
+	defer dbPool.Close()
+
+	if err := dbPool.Ping(context.Background()); err != nil {
+		log.Fatal().Err(err).Msg("Unable to ping database")
+	}
+
+	// Initialize Gin
+	r := gin.Default()
+
+	allowedOrigins := strings.Split(cfg.CORSOrigins, ",")
+	allowAllOrigins := false
+	allowedOriginSet := make(map[string]struct{}, len(allowedOrigins))
+	for _, origin := range allowedOrigins {
+		trimmed := strings.TrimSpace(origin)
+		if trimmed == "" {
+			continue
+		}
+		if trimmed == "*" {
+			allowAllOrigins = true
+			break
+		}
+		allowedOriginSet[trimmed] = struct{}{}
+	}
+
+	// Use CORS middleware
+	r.Use(cors.New(cors.Config{
+		AllowOriginFunc: func(origin string) bool {
+			log.Debug().Msgf("CORS origin: %s", origin)
+			if allowAllOrigins {
+				return true
+			}
+			// Always allow localhost/loopback for dev tools & Flutter web debug
+			if strings.HasPrefix(origin, "http://localhost") ||
+				strings.HasPrefix(origin, "https://localhost") ||
+				strings.HasPrefix(origin, "http://127.0.0.1") ||
+				strings.HasPrefix(origin, "https://127.0.0.1") {
+				return true
+			}
+			_, ok := allowedOriginSet[origin]
+			return ok
+		},
+		AllowMethods:     []string{"GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"},
+		AllowHeaders:     []string{"Origin", "Content-Type", "Accept", "Authorization", "X-Request-ID"},
+		ExposeHeaders:    []string{"Content-Length"},
+		AllowCredentials: true,
+		MaxAge:           12 * time.Hour,
+	}))
+
+	r.NoRoute(func(c *gin.Context) {
+		log.Debug().Msgf("No route found for %s %s", c.Request.Method, c.Request.URL.Path)
+		c.JSON(404, gin.H{"error": "route not found", "path": c.Request.URL.Path, "method": c.Request.Method})
+	})
+
+	// Initialize Repositories
+	userRepo := repository.NewUserRepository(dbPool)
+	postRepo := repository.NewPostRepository(dbPool)
+	chatRepo := repository.NewChatRepository(dbPool)
+	categoryRepo := repository.NewCategoryRepository(dbPool)
+	notifRepo := repository.NewNotificationRepository(dbPool)
+
+	// Initialize Services
+	assetService := services.NewAssetService(cfg.R2SigningSecret, cfg.R2PublicBaseURL, cfg.R2ImgDomain, cfg.R2VidDomain)
+	feedService := services.NewFeedService(postRepo, assetService)
+
+	pushService, err := services.NewPushService(userRepo, cfg.FirebaseCredentialsFile)
+	if err != nil {
+		log.Warn().Err(err).Msg("Failed to initialize PushService")
+	}
+
+	emailService := services.NewEmailService(cfg)
+
+	// Initialize Realtime
+	hub := realtime.NewHub()
+	jwtSecrets := []string{cfg.JWTSecret}
+	if cfg.SecondaryJWTSecret != "" {
+		jwtSecrets = append(jwtSecrets, cfg.SecondaryJWTSecret)
+	}
+	wsHandler := handlers.NewWSHandler(hub, jwtSecrets)
+
+	// Initialize Handlers
+	userHandler := handlers.NewUserHandler(userRepo, postRepo, pushService, assetService)
+	postHandler := handlers.NewPostHandler(postRepo, userRepo, feedService, assetService)
+	chatHandler := handlers.NewChatHandler(chatRepo, pushService, hub)
+	authHandler := handlers.NewAuthHandler(userRepo, cfg, emailService)
+	categoryHandler := handlers.NewCategoryHandler(categoryRepo)
+	keyHandler := handlers.NewKeyHandler(userRepo)
+	functionProxyHandler := handlers.NewFunctionProxyHandler()
+	settingsHandler := handlers.NewSettingsHandler(userRepo, notifRepo)
+	analysisHandler := handlers.NewAnalysisHandler()
+
+	// Setup Media Handler (R2)
+	var s3Client *s3.Client
+	if cfg.R2AccessKey != "" && cfg.R2SecretKey != "" && cfg.R2Endpoint != "" {
+		resolver := aws.EndpointResolverWithOptionsFunc(func(service, region string, options ...interface{}) (aws.Endpoint, error) {
+			return aws.Endpoint{URL: cfg.R2Endpoint, PartitionID: "aws", SigningRegion: "auto"}, nil
+		})
+		awsCfg, err := awsconfig.LoadDefaultConfig(
+			context.Background(),
+			awsconfig.WithRegion("auto"),
+			awsconfig.WithCredentialsProvider(credentials.NewStaticCredentialsProvider(cfg.R2AccessKey, cfg.R2SecretKey, "")),
+			awsconfig.WithEndpointResolverWithOptions(resolver),
+		)
+		if err != nil {
+			log.Warn().Err(err).Msg("Failed to load AWS/R2 config, falling back to R2 API token flow")
+		} else {
+			s3Client = s3.NewFromConfig(awsCfg)
+		}
+	}
+
+	mediaHandler := handlers.NewMediaHandler(
+		s3Client,
+		cfg.R2AccountID,
+		cfg.R2APIToken,
+		cfg.R2MediaBucket,
+		cfg.R2VideoBucket,
+		cfg.R2ImgDomain,
+		cfg.R2VidDomain,
+	)
+
+	// WebSocket Route
+	r.GET("/ws", wsHandler.ServeWS)
+
+	// API Groups
+	r.GET("/ping", func(c *gin.Context) {
+		c.String(200, "pong")
+	})
+
+	// Liveness/healthcheck endpoint (no auth)
+	r.GET("/health", func(c *gin.Context) {
+		c.JSON(200, gin.H{"status": "ok"})
+	})
+
+	v1 := r.Group("/api/v1")
+	{
+		// Public routes
+		log.Info().Msg("Registering public auth routes")
+		auth := v1.Group("/auth")
+		auth.Use(middleware.RateLimit(0.5, 3)) // 3 requests bust, then 1 every 2 seconds
+		{
+			auth.POST("/register", authHandler.Register)
+			auth.POST("/signup", authHandler.Register) // Alias for Supabase compatibility/legacy
+			auth.POST("/login", authHandler.Login)
+			auth.POST("/refresh", authHandler.RefreshSession) // Added
+			auth.POST("/resend-verification", authHandler.ResendVerificationEmail)
+			auth.GET("/verify", authHandler.VerifyEmail)
+			auth.POST("/forgot-password", authHandler.ForgotPassword)
+			auth.POST("/reset-password", authHandler.ResetPassword)
+		}
+
+		// Authenticated routes
+		authorized := v1.Group("")
+		authorized.Use(middleware.AuthMiddleware(jwtSecrets))
+		{
+			authorized.GET("/profiles/:id", userHandler.GetProfile)
+			authorized.GET("/profile", userHandler.GetProfile)
+			authorized.PATCH("/profile", userHandler.UpdateProfile)
+			authorized.POST("/complete-onboarding", authHandler.CompleteOnboarding)
+
+			// Settings Routes
+			settings := authorized.Group("/settings")
+			{
+				settings.GET("/privacy", settingsHandler.GetPrivacySettings)
+				settings.PATCH("/privacy", settingsHandler.UpdatePrivacySettings)
+				settings.GET("/user", settingsHandler.GetUserSettings)
+				settings.PATCH("/user", settingsHandler.UpdateUserSettings)
+			}
+
+			users := authorized.Group("/users")
+			{
+				users.POST("/:id/follow", userHandler.Follow)
+				users.DELETE("/:id/follow", userHandler.Unfollow)
+				users.POST("/:id/accept", userHandler.AcceptFollowRequest)
+				users.DELETE("/:id/reject", userHandler.RejectFollowRequest)
+				users.GET("/requests", userHandler.GetPendingFollowRequests) // Or /me/requests
+				users.GET("/:id/posts", postHandler.GetProfilePosts)
+				// Interaction Lists
+				users.GET("/me/saved", userHandler.GetSavedPosts)
+				users.GET("/me/liked", userHandler.GetLikedPosts)
+			}
+
+			authorized.POST("/posts", postHandler.CreatePost)
+			authorized.GET("/posts/:id", postHandler.GetPost)
+			authorized.GET("/posts/:id/chain", postHandler.GetPostChain)
+			authorized.GET("/posts/:id/focus-context", postHandler.GetPostFocusContext)
+			authorized.PATCH("/posts/:id", postHandler.UpdatePost)
+			authorized.DELETE("/posts/:id", postHandler.DeletePost)
+			authorized.POST("/posts/:id/pin", postHandler.PinPost)
+			authorized.PATCH("/posts/:id/visibility", postHandler.UpdateVisibility)
+			authorized.POST("/posts/:id/like", postHandler.LikePost)
+			authorized.DELETE("/posts/:id/like", postHandler.UnlikePost)
+			authorized.POST("/posts/:id/save", postHandler.SavePost)
+			authorized.DELETE("/posts/:id/save", postHandler.UnsavePost)
+			authorized.POST("/posts/:id/reactions/toggle", postHandler.ToggleReaction)
+			authorized.POST("/posts/:id/comments", postHandler.CreateComment)
+			authorized.GET("/feed", postHandler.GetFeed)
+			authorized.GET("/beacons/nearby", postHandler.GetNearbyBeacons)
+			authorized.GET("/categories", categoryHandler.GetCategories)
+			authorized.POST("/categories/settings", categoryHandler.SetUserCategorySettings)
+			authorized.GET("/categories/settings", categoryHandler.GetUserCategorySettings)
+			authorized.POST("/analysis/tone", analysisHandler.CheckTone)
+
+			// Chat routes
+			authorized.GET("/conversations", chatHandler.GetConversations)
+			authorized.GET("/conversation", chatHandler.GetOrCreateConversation)
+			authorized.POST("/messages", chatHandler.SendMessage)
+			authorized.GET("/conversations/:id/messages", chatHandler.GetMessages)
+			authorized.GET("/mutual-follows", chatHandler.GetMutualFollows)
+
+			// Key routes
+			authorized.POST("/keys", keyHandler.PublishKeys)
+			authorized.GET("/keys/:id", keyHandler.GetKeyBundle)
+
+			// Supabase Function Proxy
+			authorized.Any("/functions/:name", functionProxyHandler.ProxyFunction)
+
+			// Media routes
+			authorized.POST("/upload", mediaHandler.Upload)
+
+			// Search route
+			searchHandler := handlers.NewSearchHandler(userRepo, postRepo, assetService)
+			authorized.GET("/search", searchHandler.Search)
+
+			// Notifications
+			notificationHandler := handlers.NewNotificationHandler(notifRepo)
+			authorized.GET("/notifications", notificationHandler.GetNotifications)
+			authorized.POST("/notifications/device", settingsHandler.RegisterDevice)
+			authorized.DELETE("/notifications/device", settingsHandler.UnregisterDevice)
+		}
+	}
+
+	// Start server
+	srv := &http.Server{
+		Addr:    "127.0.0.1:" + cfg.Port,
+		Handler: r,
+	}
+
+	go func() {
+		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			log.Fatal().Err(err).Msg("Failed to start server")
+		}
+	}()
+
+	log.Info().Msgf("Server started on port %s", cfg.Port)
+
+	// Wait for interrupt signal to gracefully shutdown the server with
+	// a timeout of 5 seconds.
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+	<-quit
+	log.Info().Msg("Shutting down server...")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	if err := srv.Shutdown(ctx); err != nil {
+		log.Fatal().Err(err).Msg("Server forced to shutdown")
+	}
+
+	log.Info().Msg("Server exiting")
+}

_tmp_server/post_handler.go

@@ -0,0 +1,494 @@
+package handlers
+
+import (
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+	"github.com/patbritton/sojorn-backend/internal/models"
+	"github.com/patbritton/sojorn-backend/internal/repository"
+	"github.com/patbritton/sojorn-backend/internal/services"
+	"github.com/patbritton/sojorn-backend/pkg/utils"
+)
+
+type PostHandler struct {
+	postRepo     *repository.PostRepository
+	userRepo     *repository.UserRepository
+	feedService  *services.FeedService
+	assetService *services.AssetService
+}
+
+func NewPostHandler(postRepo *repository.PostRepository, userRepo *repository.UserRepository, feedService *services.FeedService, assetService *services.AssetService) *PostHandler {
+	return &PostHandler{
+		postRepo:     postRepo,
+		userRepo:     userRepo,
+		feedService:  feedService,
+		assetService: assetService,
+	}
+}
+
+func (h *PostHandler) CreateComment(c *gin.Context) {
+	userIDStr, _ := c.Get("user_id")
+	userID, _ := uuid.Parse(userIDStr.(string))
+	postID := c.Param("id")
+
+	var req struct {
+		Body string `json:"body" binding:"required,max=500"`
+	}
+
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	comment := &models.Comment{
+		PostID:   postID,
+		AuthorID: userID,
+		Body:     req.Body,
+		Status:   "active",
+	}
+
+	if err := h.postRepo.CreateComment(c.Request.Context(), comment); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to create comment", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, gin.H{"comment": comment})
+}
+
+func (h *PostHandler) GetNearbyBeacons(c *gin.Context) {
+	lat := utils.GetQueryFloat(c, "lat", 0)
+	long := utils.GetQueryFloat(c, "long", 0)
+	radius := utils.GetQueryInt(c, "radius", 16000)
+
+	beacons, err := h.postRepo.GetNearbyBeacons(c.Request.Context(), lat, long, radius)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to fetch nearby beacons", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"beacons": beacons})
+}
+
+func (h *PostHandler) CreatePost(c *gin.Context) {
+	userIDStr, _ := c.Get("user_id")
+	userID, _ := uuid.Parse(userIDStr.(string))
+
+	var req struct {
+		CategoryID *string  `json:"category_id"`
+		Body       string   `json:"body" binding:"required,max=500"`
+		ImageURL   *string  `json:"image_url"`
+		VideoURL   *string  `json:"video_url"`
+		Thumbnail  *string  `json:"thumbnail_url"`
+		DurationMS *int     `json:"duration_ms"`
+		IsBeacon   bool     `json:"is_beacon"`
+		BeaconType *string  `json:"beacon_type"`
+		BeaconLat  *float64 `json:"beacon_lat"`
+		BeaconLong *float64 `json:"beacon_long"`
+		TTLHours   *int     `json:"ttl_hours"`
+	}
+
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	// 1. Check rate limit (Simplification)
+	trustState, err := h.userRepo.GetTrustState(c.Request.Context(), userID.String())
+	if err == nil && trustState.PostsToday >= 50 { // Example hard limit
+		c.JSON(http.StatusTooManyRequests, gin.H{"error": "Daily post limit reached"})
+		return
+	}
+
+	// 2. Extract tags
+	tags := utils.ExtractHashtags(req.Body)
+
+	// 3. Mock Tone Check (In production, this would call a service or AI model)
+	tone := "neutral"
+	cis := 0.8
+
+	// 4. Resolve TTL
+	var expiresAt *time.Time
+	if req.TTLHours != nil && *req.TTLHours > 0 {
+		t := time.Now().Add(time.Duration(*req.TTLHours) * time.Hour)
+		expiresAt = &t
+	}
+
+	duration := 0
+	if req.DurationMS != nil {
+		duration = *req.DurationMS
+	}
+
+	post := &models.Post{
+		AuthorID:       userID,
+		Body:           req.Body,
+		Status:         "active",
+		ToneLabel:      &tone,
+		CISScore:       &cis,
+		ImageURL:       req.ImageURL,
+		VideoURL:       req.VideoURL,
+		ThumbnailURL:   req.Thumbnail,
+		DurationMS:     duration,
+		BodyFormat:     "plain",
+		Tags:           tags,
+		IsBeacon:       req.IsBeacon,
+		BeaconType:     req.BeaconType,
+		Confidence:     0.5, // Initial confidence
+		IsActiveBeacon: req.IsBeacon,
+		AllowChain:     !req.IsBeacon,
+		Visibility:     "public",
+		ExpiresAt:      expiresAt,
+		Lat:            req.BeaconLat,
+		Long:           req.BeaconLong,
+	}
+
+	if req.CategoryID != nil {
+		catID, _ := uuid.Parse(*req.CategoryID)
+		post.CategoryID = &catID
+	}
+
+	// Create post
+	err = h.postRepo.CreatePost(c.Request.Context(), post)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to create post", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, gin.H{
+		"post": post,
+		"tags": tags,
+		"tone_analysis": gin.H{
+			"tone": tone,
+			"cis":  cis,
+		},
+	})
+}
+
+func (h *PostHandler) GetFeed(c *gin.Context) {
+	userIDStr, _ := c.Get("user_id")
+
+	limit := utils.GetQueryInt(c, "limit", 20)
+	offset := utils.GetQueryInt(c, "offset", 0)
+	category := c.Query("category")
+	hasVideo := c.Query("has_video") == "true"
+
+	posts, err := h.feedService.GetFeed(c.Request.Context(), userIDStr.(string), category, hasVideo, limit, offset)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to fetch feed", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"posts": posts})
+}
+
+func (h *PostHandler) GetProfilePosts(c *gin.Context) {
+	authorID := c.Param("id")
+	if authorID == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Author ID required"})
+		return
+	}
+
+	limit := utils.GetQueryInt(c, "limit", 20)
+	offset := utils.GetQueryInt(c, "offset", 0)
+
+	viewerID := ""
+	if val, exists := c.Get("user_id"); exists {
+		viewerID = val.(string)
+	}
+
+	posts, err := h.postRepo.GetPostsByAuthor(c.Request.Context(), authorID, viewerID, limit, offset)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to fetch profile posts", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"posts": posts})
+}
+
+func (h *PostHandler) GetPost(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	post, err := h.postRepo.GetPostByID(c.Request.Context(), postID, userIDStr.(string))
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "Post not found"})
+		return
+	}
+
+	// Sign URL
+	if post.ImageURL != nil {
+		signed := h.assetService.SignImageURL(*post.ImageURL)
+		post.ImageURL = &signed
+	}
+	if post.VideoURL != nil {
+		signed := h.assetService.SignVideoURL(*post.VideoURL)
+		post.VideoURL = &signed
+	}
+	if post.ThumbnailURL != nil {
+		signed := h.assetService.SignImageURL(*post.ThumbnailURL)
+		post.ThumbnailURL = &signed
+	}
+
+	c.JSON(http.StatusOK, gin.H{"post": post})
+}
+
+func (h *PostHandler) UpdatePost(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	var req struct {
+		Body string `json:"body" binding:"required"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	err := h.postRepo.UpdatePost(c.Request.Context(), postID, userIDStr.(string), req.Body)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to update post", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "Post updated"})
+}
+
+func (h *PostHandler) DeletePost(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	err := h.postRepo.DeletePost(c.Request.Context(), postID, userIDStr.(string))
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to delete post", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "Post deleted"})
+}
+
+func (h *PostHandler) PinPost(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	var req struct {
+		Pinned bool `json:"pinned"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	err := h.postRepo.PinPost(c.Request.Context(), postID, userIDStr.(string), req.Pinned)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to pin/unpin post", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "Post pin status updated"})
+}
+
+func (h *PostHandler) UpdateVisibility(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	var req struct {
+		Visibility string `json:"visibility" binding:"required"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	err := h.postRepo.UpdateVisibility(c.Request.Context(), postID, userIDStr.(string), req.Visibility)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to update visibility", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "Post visibility updated"})
+}
+
+func (h *PostHandler) LikePost(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	err := h.postRepo.LikePost(c.Request.Context(), postID, userIDStr.(string))
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to like post", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "Post liked"})
+}
+
+func (h *PostHandler) UnlikePost(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	err := h.postRepo.UnlikePost(c.Request.Context(), postID, userIDStr.(string))
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to unlike post", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "Post unliked"})
+}
+
+func (h *PostHandler) SavePost(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	err := h.postRepo.SavePost(c.Request.Context(), postID, userIDStr.(string))
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to save post", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "Post saved"})
+}
+
+func (h *PostHandler) UnsavePost(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	err := h.postRepo.UnsavePost(c.Request.Context(), postID, userIDStr.(string))
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to unsave post", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "Post unsaved"})
+}
+
+func (h *PostHandler) ToggleReaction(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	var req struct {
+		Emoji string `json:"emoji" binding:"required"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	emoji := strings.TrimSpace(req.Emoji)
+	if emoji == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Emoji is required"})
+		return
+	}
+
+	counts, myReactions, err := h.postRepo.ToggleReaction(c.Request.Context(), postID, userIDStr.(string), emoji)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to toggle reaction", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"reactions":    counts,
+		"my_reactions": myReactions,
+	})
+}
+
+func (h *PostHandler) GetSavedPosts(c *gin.Context) {
+	userID := c.Param("id")
+	if userID == "" || userID == "me" {
+		userIDStr, exists := c.Get("user_id")
+		if exists {
+			userID = userIDStr.(string)
+		}
+	}
+
+	if userID == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "User ID required"})
+		return
+	}
+
+	limit := utils.GetQueryInt(c, "limit", 20)
+	offset := utils.GetQueryInt(c, "offset", 0)
+
+	posts, err := h.postRepo.GetSavedPosts(c.Request.Context(), userID, limit, offset)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to fetch saved posts", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"posts": posts})
+}
+
+func (h *PostHandler) GetLikedPosts(c *gin.Context) {
+	userID := c.Param("id")
+	if userID == "" || userID == "me" {
+		userIDStr, exists := c.Get("user_id")
+		if exists {
+			userID = userIDStr.(string)
+		}
+	}
+
+	if userID == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "User ID required"})
+		return
+	}
+
+	limit := utils.GetQueryInt(c, "limit", 20)
+	offset := utils.GetQueryInt(c, "offset", 0)
+
+	posts, err := h.postRepo.GetLikedPosts(c.Request.Context(), userID, limit, offset)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to fetch liked posts", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"posts": posts})
+}
+
+func (h *PostHandler) GetPostChain(c *gin.Context) {
+	postID := c.Param("id")
+
+	posts, err := h.postRepo.GetPostChain(c.Request.Context(), postID)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to fetch post chain", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"chain": posts})
+}
+
+func (h *PostHandler) GetPostFocusContext(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	focusContext, err := h.postRepo.GetPostFocusContext(c.Request.Context(), postID, userIDStr.(string))
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to fetch focus context", "details": err.Error()})
+		return
+	}
+
+	h.signPostMedia(focusContext.TargetPost)
+	h.signPostMedia(focusContext.ParentPost)
+	for i := range focusContext.Children {
+		h.signPostMedia(&focusContext.Children[i])
+	}
+
+	c.JSON(http.StatusOK, focusContext)
+}
+
+func (h *PostHandler) signPostMedia(post *models.Post) {
+	if post == nil {
+		return
+	}
+	if post.ImageURL != nil {
+		signed := h.assetService.SignImageURL(*post.ImageURL)
+		post.ImageURL = &signed
+	}
+	if post.VideoURL != nil {
+		signed := h.assetService.SignVideoURL(*post.VideoURL)
+		post.VideoURL = &signed
+	}
+	if post.ThumbnailURL != nil {
+		signed := h.assetService.SignImageURL(*post.ThumbnailURL)
+		post.ThumbnailURL = &signed
+	}
+}

_tmp_server/post_repository.go

@@ -0,0 +1,912 @@
+package repository
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/patbritton/sojorn-backend/internal/models"
+)
+
+type PostRepository struct {
+	pool *pgxpool.Pool
+}
+
+func NewPostRepository(pool *pgxpool.Pool) *PostRepository {
+	return &PostRepository{pool: pool}
+}
+
+func (r *PostRepository) CreatePost(ctx context.Context, post *models.Post) error {
+	// Calculate confidence score if it's a beacon
+	if post.IsBeacon {
+		var harmonyScore int
+		err := r.pool.QueryRow(ctx, "SELECT harmony_score FROM public.trust_state WHERE user_id = $1", post.AuthorID).Scan(&harmonyScore)
+		if err == nil {
+			// Logic: confidence = harmony_score / 100.0 (legacy parity)
+			post.Confidence = float64(harmonyScore) / 100.0
+		} else {
+			post.Confidence = 0.5 // Default fallback
+		}
+	}
+
+	query := `
+		INSERT INTO public.posts (
+			author_id, category_id, body, status, tone_label, cis_score, 
+			image_url, video_url, thumbnail_url, duration_ms, body_format, background_id, tags, 
+			is_beacon, beacon_type, location, confidence_score, 
+			is_active_beacon, allow_chain, chain_parent_id, visibility, expires_at
+		) VALUES (
+			$1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, 
+			$14, $15,
+			CASE WHEN ($16::double precision) IS NOT NULL AND ($17::double precision) IS NOT NULL 
+				 THEN ST_SetSRID(ST_MakePoint(($17::double precision), ($16::double precision)), 4326)::geography 
+				 ELSE NULL END, 
+			$18, $19, $20, $21, $22, $23
+		) RETURNING id, created_at
+	`
+
+	tx, err := r.pool.Begin(ctx)
+	if err != nil {
+		return fmt.Errorf("failed to start transaction: %w", err)
+	}
+	defer tx.Rollback(ctx)
+
+	err = tx.QueryRow(ctx, query,
+		post.AuthorID, post.CategoryID, post.Body, post.Status, post.ToneLabel, post.CISScore,
+		post.ImageURL, post.VideoURL, post.ThumbnailURL, post.DurationMS, post.BodyFormat, post.BackgroundID, post.Tags,
+		post.IsBeacon, post.BeaconType, post.Lat, post.Long, post.Confidence,
+		post.IsActiveBeacon, post.AllowChain, post.ChainParentID, post.Visibility, post.ExpiresAt,
+	).Scan(&post.ID, &post.CreatedAt)
+
+	if err != nil {
+		return fmt.Errorf("failed to create post: %w", err)
+	}
+
+	// Initialize metrics
+	if _, err := tx.Exec(ctx, "INSERT INTO public.post_metrics (post_id) VALUES ($1)", post.ID); err != nil {
+		return fmt.Errorf("failed to initialize post metrics: %w", err)
+	}
+
+	if err := tx.Commit(ctx); err != nil {
+		return fmt.Errorf("failed to commit post transaction: %w", err)
+	}
+
+	return nil
+}
+
+func (r *PostRepository) GetRandomSponsoredPost(ctx context.Context, userID string) (*models.Post, error) {
+	query := `
+		SELECT 
+			p.id, p.author_id, p.category_id, p.body, COALESCE(p.image_url, ''), COALESCE(p.video_url, ''), COALESCE(p.thumbnail_url, ''), p.duration_ms, COALESCE(p.tags, ARRAY[]::text[]), p.created_at,
+			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
+			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
+			FALSE as is_liked,
+			sp.advertiser_name
+		FROM public.sponsored_posts sp
+		JOIN public.posts p ON sp.post_id = p.id
+		JOIN public.profiles pr ON p.author_id = pr.id
+		LEFT JOIN public.post_metrics m ON p.id = m.post_id
+		WHERE p.deleted_at IS NULL AND p.status = 'active'
+		  AND (
+		      p.category_id IS NULL OR EXISTS (
+		          SELECT 1 FROM public.user_category_settings ucs 
+		          WHERE ucs.user_id = $1 AND ucs.category_id = p.category_id AND ucs.enabled = true
+		      )
+		  )
+		ORDER BY RANDOM()
+		LIMIT 1
+	`
+	var p models.Post
+	var advertiserName string
+	err := r.pool.QueryRow(ctx, query, userID).Scan(
+		&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.VideoURL, &p.ThumbnailURL, &p.DurationMS, &p.Tags, &p.CreatedAt,
+		&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+		&p.LikeCount, &p.CommentCount, &p.IsLiked,
+		&advertiserName,
+	)
+	if err != nil {
+		return nil, err
+	}
+	p.Author = &models.AuthorProfile{
+		ID:          p.AuthorID,
+		Handle:      p.AuthorHandle,
+		DisplayName: advertiserName, // Display advertiser name for ads
+		AvatarURL:   p.AuthorAvatarURL,
+	}
+	p.IsSponsored = true
+	return &p, nil
+}
+
+func (r *PostRepository) GetFeed(ctx context.Context, userID string, categorySlug string, hasVideo bool, limit int, offset int) ([]models.Post, error) {
+	query := `
+		SELECT 
+			p.id,
+			p.author_id,
+			p.category_id,
+			p.body,
+			COALESCE(p.image_url, ''),
+			CASE
+				WHEN COALESCE(p.video_url, '') <> '' THEN p.video_url
+				WHEN COALESCE(p.image_url, '') ILIKE '%.mp4' THEN p.image_url
+				ELSE ''
+			END AS resolved_video_url,
+			COALESCE(NULLIF(p.thumbnail_url, ''), p.image_url, '') AS resolved_thumbnail_url,
+			COALESCE(p.duration_ms, 0),
+			COALESCE(p.tags, ARRAY[]::text[]),
+			p.created_at,
+			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
+			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
+			FALSE as is_liked
+		FROM public.posts p
+		JOIN public.profiles pr ON p.author_id = pr.id
+		LEFT JOIN public.post_metrics m ON p.id = m.post_id
+		LEFT JOIN public.categories c ON p.category_id = c.id
+		WHERE p.deleted_at IS NULL
+		  AND (
+		      p.author_id = $4 -- My own posts
+		      OR pr.is_private = FALSE -- Public profiles
+		      OR EXISTS (
+		          SELECT 1 FROM public.follows f 
+		          WHERE f.follower_id = $4 AND f.following_id = p.author_id AND f.status = 'accepted'
+		      )
+		  )
+		  AND ($3 = FALSE OR (COALESCE(p.video_url, '') <> '' OR (COALESCE(p.image_url, '') ILIKE '%%.mp4')))
+		ORDER BY p.created_at DESC 
+		LIMIT $1 OFFSET $2
+	`
+	rows, err := r.pool.Query(ctx, query, limit, offset, hasVideo, userID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	posts := []models.Post{}
+	for rows.Next() {
+		var p models.Post
+		err := rows.Scan(
+			&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.VideoURL, &p.ThumbnailURL, &p.DurationMS, &p.Tags, &p.CreatedAt,
+			&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+			&p.LikeCount, &p.CommentCount, &p.IsLiked,
+		)
+		if err != nil {
+			return nil, err
+		}
+		p.Author = &models.AuthorProfile{
+			ID:          p.AuthorID,
+			Handle:      p.AuthorHandle,
+			DisplayName: p.AuthorDisplayName,
+			AvatarURL:   p.AuthorAvatarURL,
+		}
+		posts = append(posts, p)
+	}
+	return posts, nil
+}
+
+func (r *PostRepository) GetCategories(ctx context.Context) ([]models.Category, error) {
+	query := `SELECT id, slug, name, description, is_sensitive, created_at FROM public.categories ORDER BY name ASC`
+	rows, err := r.pool.Query(ctx, query)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var categories []models.Category
+	for rows.Next() {
+		var c models.Category
+		err := rows.Scan(&c.ID, &c.Slug, &c.Name, &c.Description, &c.IsSensitive, &c.CreatedAt)
+		if err != nil {
+			return nil, err
+		}
+		categories = append(categories, c)
+	}
+	return categories, nil
+}
+
+func (r *PostRepository) GetPostsByAuthor(ctx context.Context, authorID string, viewerID string, limit int, offset int) ([]models.Post, error) {
+	query := `
+		SELECT 
+			p.id,
+			p.author_id,
+			p.category_id,
+			p.body,
+			COALESCE(p.image_url, ''),
+			CASE
+				WHEN COALESCE(p.video_url, '') <> '' THEN p.video_url
+				WHEN COALESCE(p.image_url, '') ILIKE '%.mp4' THEN p.image_url
+				ELSE ''
+			END AS resolved_video_url,
+			COALESCE(NULLIF(p.thumbnail_url, ''), p.image_url, '') AS resolved_thumbnail_url,
+			COALESCE(p.duration_ms, 0),
+			COALESCE(p.tags, ARRAY[]::text[]),
+			p.created_at,
+			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
+			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
+			FALSE as is_liked
+		FROM posts p
+		JOIN profiles pr ON p.author_id = pr.id
+		LEFT JOIN post_metrics m ON p.id = m.post_id
+		WHERE p.author_id = $1 AND p.deleted_at IS NULL AND p.status = 'active'
+		  AND (
+		      p.author_id = $4 -- Viewer is author
+		      OR pr.is_private = FALSE -- Public profile
+		      OR EXISTS (
+		          SELECT 1 FROM public.follows f 
+		          WHERE f.follower_id = $4 AND f.following_id = p.author_id AND f.status = 'accepted'
+		      )
+		  )
+		ORDER BY p.created_at DESC 
+		LIMIT $2 OFFSET $3
+	`
+	rows, err := r.pool.Query(ctx, query, authorID, limit, offset, viewerID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var posts []models.Post
+	for rows.Next() {
+		var p models.Post
+		err := rows.Scan(
+			&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.VideoURL, &p.ThumbnailURL, &p.DurationMS, &p.Tags, &p.CreatedAt,
+			&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+			&p.LikeCount, &p.CommentCount, &p.IsLiked,
+		)
+		if err != nil {
+			return nil, err
+		}
+		p.Author = &models.AuthorProfile{
+			ID:          p.AuthorID,
+			Handle:      p.AuthorHandle,
+			DisplayName: p.AuthorDisplayName,
+			AvatarURL:   p.AuthorAvatarURL,
+		}
+		posts = append(posts, p)
+	}
+	return posts, nil
+}
+
+func (r *PostRepository) GetPostByID(ctx context.Context, postID string, userID string) (*models.Post, error) {
+	query := `
+		SELECT 
+			p.id,
+			p.author_id,
+			p.category_id,
+			p.body,
+			COALESCE(p.image_url, ''),
+			CASE
+				WHEN COALESCE(p.video_url, '') <> '' THEN p.video_url
+				WHEN COALESCE(p.image_url, '') ILIKE '%.mp4' THEN p.image_url
+				ELSE ''
+			END AS resolved_video_url,
+			COALESCE(NULLIF(p.thumbnail_url, ''), p.image_url, '') AS resolved_thumbnail_url,
+			p.duration_ms,
+			COALESCE(p.tags, ARRAY[]::text[]),
+			p.created_at,
+			p.chain_parent_id,
+			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
+			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
+			CASE WHEN $2 != '' THEN EXISTS(SELECT 1 FROM public.post_likes WHERE post_id = p.id AND user_id = $2) ELSE FALSE END as is_liked,
+			p.allow_chain, p.visibility
+		FROM public.posts p
+		JOIN public.profiles pr ON p.author_id = pr.id
+		LEFT JOIN public.post_metrics m ON p.id = m.post_id
+		WHERE p.id = $1 AND p.deleted_at IS NULL
+		  AND (
+		      p.author_id = $2
+		      OR pr.is_private = FALSE
+		      OR EXISTS (
+		          SELECT 1 FROM public.follows f 
+		          WHERE f.follower_id = $2 AND f.following_id = p.author_id AND f.status = 'accepted'
+		      )
+		  )
+	`
+	var p models.Post
+	err := r.pool.QueryRow(ctx, query, postID, userID).Scan(
+		&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.VideoURL, &p.ThumbnailURL, &p.DurationMS, &p.Tags, &p.CreatedAt,
+		&p.ChainParentID,
+		&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+		&p.LikeCount, &p.CommentCount, &p.IsLiked,
+		&p.AllowChain, &p.Visibility,
+	)
+	if err != nil {
+		return nil, err
+	}
+	p.Author = &models.AuthorProfile{
+		ID:          p.AuthorID,
+		Handle:      p.AuthorHandle,
+		DisplayName: p.AuthorDisplayName,
+		AvatarURL:   p.AuthorAvatarURL,
+	}
+	return &p, nil
+}
+
+func (r *PostRepository) UpdatePost(ctx context.Context, postID string, authorID string, body string) error {
+	query := `UPDATE public.posts SET body = $1, edited_at = NOW() WHERE id = $2 AND author_id = $3 AND deleted_at IS NULL`
+	res, err := r.pool.Exec(ctx, query, body, postID, authorID)
+	if err != nil {
+		return err
+	}
+	if res.RowsAffected() == 0 {
+		return fmt.Errorf("post not found or unauthorized")
+	}
+	return nil
+}
+
+func (r *PostRepository) DeletePost(ctx context.Context, postID string, authorID string) error {
+	query := `UPDATE public.posts SET deleted_at = NOW() WHERE id = $1 AND author_id = $2 AND deleted_at IS NULL`
+	res, err := r.pool.Exec(ctx, query, postID, authorID)
+	if err != nil {
+		return err
+	}
+	if res.RowsAffected() == 0 {
+		return fmt.Errorf("post not found or unauthorized")
+	}
+	return nil
+}
+
+func (r *PostRepository) PinPost(ctx context.Context, postID string, authorID string, pinned bool) error {
+	var val *time.Time
+	if pinned {
+		t := time.Now()
+		val = &t
+	}
+	query := `UPDATE public.posts SET pinned_at = $1 WHERE id = $2 AND author_id = $3 AND deleted_at IS NULL`
+	res, err := r.pool.Exec(ctx, query, val, postID, authorID)
+	if err != nil {
+		return err
+	}
+	if res.RowsAffected() == 0 {
+		return fmt.Errorf("post not found or unauthorized")
+	}
+	return nil
+}
+
+func (r *PostRepository) UpdateVisibility(ctx context.Context, postID string, authorID string, visibility string) error {
+	query := `UPDATE public.posts SET visibility = $1 WHERE id = $2 AND author_id = $3 AND deleted_at IS NULL`
+	res, err := r.pool.Exec(ctx, query, visibility, postID, authorID)
+	if err != nil {
+		return err
+	}
+	if res.RowsAffected() == 0 {
+		return fmt.Errorf("post not found or unauthorized")
+	}
+	return nil
+}
+
+func (r *PostRepository) LikePost(ctx context.Context, postID string, userID string) error {
+	query := `INSERT INTO public.post_likes (post_id, user_id) VALUES ($1, $2) ON CONFLICT DO NOTHING`
+	_, err := r.pool.Exec(ctx, query, postID, userID)
+	return err
+}
+
+func (r *PostRepository) UnlikePost(ctx context.Context, postID string, userID string) error {
+	query := `DELETE FROM public.post_likes WHERE post_id = $1 AND user_id = $2`
+	_, err := r.pool.Exec(ctx, query, postID, userID)
+	return err
+}
+
+func (r *PostRepository) SavePost(ctx context.Context, postID string, userID string) error {
+	query := `INSERT INTO public.post_saves (post_id, user_id) VALUES ($1, $2) ON CONFLICT DO NOTHING`
+	_, err := r.pool.Exec(ctx, query, postID, userID)
+	return err
+}
+
+func (r *PostRepository) UnsavePost(ctx context.Context, postID string, userID string) error {
+	query := `DELETE FROM public.post_saves WHERE post_id = $1 AND user_id = $2`
+	_, err := r.pool.Exec(ctx, query, postID, userID)
+	return err
+}
+
+func (r *PostRepository) CreateComment(ctx context.Context, comment *models.Comment) error {
+	query := `
+		INSERT INTO public.comments (post_id, author_id, body, status, created_at)
+		VALUES ($1, $2, $3, $4, NOW())
+		RETURNING id, created_at
+	`
+	err := r.pool.QueryRow(ctx, query, comment.PostID, comment.AuthorID, comment.Body, comment.Status).Scan(&comment.ID, &comment.CreatedAt)
+	if err != nil {
+		return err
+	}
+
+	// Increment comment count in metrics
+	_, _ = r.pool.Exec(ctx, "UPDATE public.post_metrics SET comment_count = comment_count + 1 WHERE post_id = $1", comment.PostID)
+
+	return nil
+}
+
+func (r *PostRepository) GetNearbyBeacons(ctx context.Context, lat float64, long float64, radius int) ([]models.Post, error) {
+	query := `
+		SELECT 
+			p.id, p.author_id, p.category_id, p.body, COALESCE(p.image_url, ''), p.tags, p.created_at,
+			p.beacon_type, p.confidence_score, p.is_active_beacon,
+			ST_Y(p.location::geometry) as lat, ST_X(p.location::geometry) as long,
+			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url
+		FROM public.posts p
+		JOIN public.profiles pr ON p.author_id = pr.id
+		WHERE p.is_beacon = true 
+		  AND ST_DWithin(p.location, ST_SetSRID(ST_Point($2, $1), 4326)::geography, $3)
+		  AND p.status = 'active'
+		ORDER BY p.created_at DESC
+	`
+	rows, err := r.pool.Query(ctx, query, lat, long, radius)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var beacons []models.Post
+	for rows.Next() {
+		var p models.Post
+		err := rows.Scan(
+			&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.Tags, &p.CreatedAt,
+			&p.BeaconType, &p.Confidence, &p.IsActiveBeacon, &p.Lat, &p.Long,
+			&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+		)
+		if err != nil {
+			return nil, err
+		}
+		p.Author = &models.AuthorProfile{
+			ID:          p.AuthorID,
+			Handle:      p.AuthorHandle,
+			DisplayName: p.AuthorDisplayName,
+			AvatarURL:   p.AuthorAvatarURL,
+		}
+		beacons = append(beacons, p)
+	}
+	return beacons, nil
+}
+
+func (r *PostRepository) GetSavedPosts(ctx context.Context, userID string, limit int, offset int) ([]models.Post, error) {
+	query := `
+		SELECT 
+			p.id, p.author_id, p.category_id, p.body, p.image_url, p.tags, p.created_at,
+			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
+			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
+			EXISTS(SELECT 1 FROM public.post_likes WHERE post_id = p.id AND user_id = $1) as is_liked
+		FROM public.post_saves ps
+		JOIN public.posts p ON ps.post_id = p.id
+		JOIN public.profiles pr ON p.author_id = pr.id
+		LEFT JOIN public.post_metrics m ON p.id = m.post_id
+		WHERE ps.user_id = $1 AND p.deleted_at IS NULL
+		ORDER BY ps.created_at DESC
+		LIMIT $2 OFFSET $3
+	`
+	rows, err := r.pool.Query(ctx, query, userID, limit, offset)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var posts []models.Post
+	for rows.Next() {
+		var p models.Post
+		err := rows.Scan(
+			&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.Tags, &p.CreatedAt,
+			&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+			&p.LikeCount, &p.CommentCount, &p.IsLiked,
+		)
+		if err != nil {
+			return nil, err
+		}
+		p.Author = &models.AuthorProfile{
+			ID:          p.AuthorID,
+			Handle:      p.AuthorHandle,
+			DisplayName: p.AuthorDisplayName,
+			AvatarURL:   p.AuthorAvatarURL,
+		}
+		posts = append(posts, p)
+	}
+	return posts, nil
+}
+
+func (r *PostRepository) GetLikedPosts(ctx context.Context, userID string, limit int, offset int) ([]models.Post, error) {
+	query := `
+		SELECT 
+			p.id, p.author_id, p.category_id, p.body, p.image_url, p.tags, p.created_at,
+			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
+			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
+			TRUE as is_liked
+		FROM public.post_likes pl
+		JOIN public.posts p ON pl.post_id = p.id
+		JOIN public.profiles pr ON p.author_id = pr.id
+		LEFT JOIN public.post_metrics m ON p.id = m.post_id
+		WHERE pl.user_id = $1 AND p.deleted_at IS NULL
+		ORDER BY pl.created_at DESC
+		LIMIT $2 OFFSET $3
+	`
+	rows, err := r.pool.Query(ctx, query, userID, limit, offset)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var posts []models.Post
+	for rows.Next() {
+		var p models.Post
+		err := rows.Scan(
+			&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.Tags, &p.CreatedAt,
+			&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+			&p.LikeCount, &p.CommentCount, &p.IsLiked,
+		)
+		if err != nil {
+			return nil, err
+		}
+		p.Author = &models.AuthorProfile{
+			ID:          p.AuthorID,
+			Handle:      p.AuthorHandle,
+			DisplayName: p.AuthorDisplayName,
+			AvatarURL:   p.AuthorAvatarURL,
+		}
+		posts = append(posts, p)
+	}
+	return posts, nil
+}
+
+func (r *PostRepository) GetPostChain(ctx context.Context, rootID string) ([]models.Post, error) {
+	// Recursive CTE to get the chain
+	query := `
+		WITH RECURSIVE object_chain AS (
+			-- Anchor member: select the root post
+			SELECT 
+				p.id, p.author_id, p.category_id, p.body, p.image_url, p.tags, p.created_at, p.chain_parent_id,
+				pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
+				COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
+				1 as level
+			FROM public.posts p
+			JOIN public.profiles pr ON p.author_id = pr.id
+			LEFT JOIN public.post_metrics m ON p.id = m.post_id
+			WHERE p.id = $1 AND p.deleted_at IS NULL
+
+			UNION ALL
+
+			-- Recursive member: select children
+			SELECT 
+				p.id, p.author_id, p.category_id, p.body, p.image_url, p.tags, p.created_at, p.chain_parent_id,
+				pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
+				COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
+				oc.level + 1
+			FROM public.posts p
+			JOIN public.profiles pr ON p.author_id = pr.id
+			LEFT JOIN public.post_metrics m ON p.id = m.post_id
+			JOIN object_chain oc ON p.chain_parent_id = oc.id
+			WHERE p.deleted_at IS NULL
+		)
+		SELECT 
+			id, author_id, category_id, body, image_url, tags, created_at,
+			author_handle, author_display_name, author_avatar_url,
+			like_count, comment_count
+		FROM object_chain
+		ORDER BY level ASC, created_at ASC;
+	`
+	rows, err := r.pool.Query(ctx, query, rootID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var posts []models.Post
+	for rows.Next() {
+		var p models.Post
+		err := rows.Scan(
+			&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.Tags, &p.CreatedAt,
+			&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+			&p.LikeCount, &p.CommentCount,
+		)
+		if err != nil {
+			return nil, err
+		}
+		p.Author = &models.AuthorProfile{
+			ID:          p.AuthorID,
+			Handle:      p.AuthorHandle,
+			DisplayName: p.AuthorDisplayName,
+			AvatarURL:   p.AuthorAvatarURL,
+		}
+		posts = append(posts, p)
+	}
+	return posts, nil
+}
+
+func (r *PostRepository) SearchPosts(ctx context.Context, query string, viewerID string, limit int) ([]models.Post, error) {
+	searchQuery := "%" + query + "%"
+	sql := `
+		SELECT 
+			p.id, p.author_id, p.category_id, p.body, COALESCE(p.image_url, ''), COALESCE(p.video_url, ''), COALESCE(p.thumbnail_url, ''), p.duration_ms, COALESCE(p.tags, ARRAY[]::text[]), p.created_at,
+			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
+			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
+			FALSE as is_liked
+		FROM public.posts p
+		JOIN public.profiles pr ON p.author_id = pr.id
+		LEFT JOIN public.post_metrics m ON p.id = m.post_id
+		WHERE (p.body ILIKE $1 OR $2 = ANY(p.tags)) 
+		  AND p.deleted_at IS NULL AND p.status = 'active'
+		  AND (
+		      p.author_id = $4
+		      OR pr.is_private = FALSE
+		      OR EXISTS (
+		          SELECT 1 FROM public.follows f 
+		          WHERE f.follower_id = $4 AND f.following_id = p.author_id AND f.status = 'accepted'
+		      )
+		  )
+		ORDER BY p.created_at DESC
+		LIMIT $3
+	`
+	rows, err := r.pool.Query(ctx, sql, searchQuery, query, limit, viewerID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var posts []models.Post
+	for rows.Next() {
+		var p models.Post
+		err := rows.Scan(
+			&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.VideoURL, &p.ThumbnailURL, &p.DurationMS, &p.Tags, &p.CreatedAt,
+			&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+			&p.LikeCount, &p.CommentCount, &p.IsLiked,
+		)
+		if err != nil {
+			return nil, err
+		}
+		p.Author = &models.AuthorProfile{
+			ID:          p.AuthorID,
+			Handle:      p.AuthorHandle,
+			DisplayName: p.AuthorDisplayName,
+			AvatarURL:   p.AuthorAvatarURL,
+		}
+		posts = append(posts, p)
+	}
+	return posts, nil
+}
+
+func (r *PostRepository) SearchTags(ctx context.Context, query string, limit int) ([]models.TagResult, error) {
+	searchQuery := "%" + query + "%"
+	sql := `
+		SELECT tag, COUNT(*) as count
+		FROM (
+			SELECT unnest(tags) as tag FROM public.posts WHERE deleted_at IS NULL AND status = 'active'
+		) t
+		WHERE tag ILIKE $1
+		GROUP BY tag
+		ORDER BY count DESC
+		LIMIT $2
+	`
+	rows, err := r.pool.Query(ctx, sql, searchQuery, limit)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var tags []models.TagResult
+	for rows.Next() {
+		var t models.TagResult
+		if err := rows.Scan(&t.Tag, &t.Count); err != nil {
+			return nil, err
+		}
+		tags = append(tags, t)
+	}
+	return tags, nil
+}
+
+// GetPostFocusContext retrieves minimal data for Focus-Context view
+// Returns: Target Post, Direct Parent (if any), and Direct Children (1st layer only)
+func (r *PostRepository) GetPostFocusContext(ctx context.Context, postID string, userID string) (*models.FocusContext, error) {
+	// Get target post
+	targetPost, err := r.GetPostByID(ctx, postID, userID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get target post: %w", err)
+	}
+
+	var parentPost *models.Post
+	var children []models.Post
+	var parentChildren []models.Post
+
+	// Get parent post if chain_parent_id exists
+	if targetPost.ChainParentID != nil {
+		parentPost, err = r.GetPostByID(ctx, targetPost.ChainParentID.String(), userID)
+		if err != nil {
+			// Parent might not exist or be inaccessible - continue without it
+			parentPost = nil
+		}
+	}
+
+	// Get direct children (1st layer replies only)
+	childrenQuery := `
+		SELECT 
+			p.id,
+			p.author_id,
+			p.category_id,
+			p.body,
+			COALESCE(p.image_url, ''),
+			CASE
+				WHEN COALESCE(p.video_url, '') <> '' THEN p.video_url
+				WHEN COALESCE(p.image_url, '') ILIKE '%.mp4' THEN p.image_url
+				ELSE ''
+			END AS resolved_video_url,
+			COALESCE(NULLIF(p.thumbnail_url, ''), p.image_url, '') AS resolved_thumbnail_url,
+			p.duration_ms,
+			COALESCE(p.tags, ARRAY[]::text[]),
+			p.created_at,
+			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
+			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
+			CASE WHEN $2 != '' THEN EXISTS(SELECT 1 FROM public.post_likes WHERE post_id = p.id AND user_id = $2) ELSE FALSE END as is_liked,
+			p.allow_chain, p.visibility
+		FROM public.posts p
+		JOIN public.profiles pr ON p.author_id = pr.id
+		LEFT JOIN public.post_metrics m ON p.id = m.post_id
+		WHERE p.chain_parent_id = $1 AND p.deleted_at IS NULL AND p.status = 'active'
+		  AND (
+		      p.author_id = $2
+		      OR pr.is_private = FALSE
+		      OR EXISTS (
+		          SELECT 1 FROM public.follows f 
+		          WHERE f.follower_id = $2 AND f.following_id = p.author_id AND f.status = 'accepted'
+		      )
+		  )
+		ORDER BY p.created_at ASC
+	`
+
+	rows, err := r.pool.Query(ctx, childrenQuery, postID, userID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get children posts: %w", err)
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var p models.Post
+		err := rows.Scan(
+			&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.VideoURL, &p.ThumbnailURL, &p.DurationMS, &p.Tags, &p.CreatedAt,
+			&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+			&p.LikeCount, &p.CommentCount, &p.IsLiked,
+			&p.AllowChain, &p.Visibility,
+		)
+		if err != nil {
+			return nil, fmt.Errorf("failed to scan child post: %w", err)
+		}
+		p.Author = &models.AuthorProfile{
+			ID:          p.AuthorID,
+			Handle:      p.AuthorHandle,
+			DisplayName: p.AuthorDisplayName,
+			AvatarURL:   p.AuthorAvatarURL,
+		}
+		children = append(children, p)
+	}
+
+	// If we have a parent, fetch its direct children (siblings + current)
+	if parentPost != nil {
+		siblingRows, err := r.pool.Query(ctx, childrenQuery, parentPost.ID.String(), userID)
+		if err != nil {
+			return nil, fmt.Errorf("failed to get parent children: %w", err)
+		}
+		defer siblingRows.Close()
+
+		for siblingRows.Next() {
+			var p models.Post
+			err := siblingRows.Scan(
+				&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.VideoURL, &p.ThumbnailURL, &p.DurationMS, &p.Tags, &p.CreatedAt,
+				&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+				&p.LikeCount, &p.CommentCount, &p.IsLiked,
+				&p.AllowChain, &p.Visibility,
+			)
+			if err != nil {
+				return nil, fmt.Errorf("failed to scan parent child post: %w", err)
+			}
+			p.Author = &models.AuthorProfile{
+				ID:          p.AuthorID,
+				Handle:      p.AuthorHandle,
+				DisplayName: p.AuthorDisplayName,
+				AvatarURL:   p.AuthorAvatarURL,
+			}
+			parentChildren = append(parentChildren, p)
+		}
+	}
+
+	return &models.FocusContext{
+		TargetPost:     targetPost,
+		ParentPost:     parentPost,
+		Children:       children,
+		ParentChildren: parentChildren,
+	}, nil
+}
+
+func (r *PostRepository) ToggleReaction(ctx context.Context, postID string, userID string, emoji string) (map[string]int, []string, error) {
+	tx, err := r.pool.Begin(ctx)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to start transaction: %w", err)
+	}
+	defer tx.Rollback(ctx)
+
+	var exists bool
+	err = tx.QueryRow(
+		ctx,
+		`SELECT EXISTS(
+			SELECT 1 FROM public.post_reactions
+			WHERE post_id = $1 AND user_id = $2 AND emoji = $3
+		)`,
+		postID,
+		userID,
+		emoji,
+	).Scan(&exists)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to check reaction: %w", err)
+	}
+
+	if exists {
+		if _, err := tx.Exec(
+			ctx,
+			`DELETE FROM public.post_reactions
+			 WHERE post_id = $1 AND user_id = $2 AND emoji = $3`,
+			postID,
+			userID,
+			emoji,
+		); err != nil {
+			return nil, nil, fmt.Errorf("failed to remove reaction: %w", err)
+		}
+	} else {
+		if _, err := tx.Exec(
+			ctx,
+			`INSERT INTO public.post_reactions (post_id, user_id, emoji)
+			 VALUES ($1, $2, $3)`,
+			postID,
+			userID,
+			emoji,
+		); err != nil {
+			return nil, nil, fmt.Errorf("failed to add reaction: %w", err)
+		}
+	}
+
+	rows, err := tx.Query(
+		ctx,
+		`SELECT emoji, COUNT(*) FROM public.post_reactions
+		 WHERE post_id = $1
+		 GROUP BY emoji`,
+		postID,
+	)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to load reaction counts: %w", err)
+	}
+	defer rows.Close()
+
+	counts := make(map[string]int)
+	for rows.Next() {
+		var reaction string
+		var count int
+		if err := rows.Scan(&reaction, &count); err != nil {
+			return nil, nil, fmt.Errorf("failed to scan reaction counts: %w", err)
+		}
+		counts[reaction] = count
+	}
+	if rows.Err() != nil {
+		return nil, nil, fmt.Errorf("failed to iterate reaction counts: %w", rows.Err())
+	}
+
+	userRows, err := tx.Query(
+		ctx,
+		`SELECT emoji FROM public.post_reactions
+		 WHERE post_id = $1 AND user_id = $2`,
+		postID,
+		userID,
+	)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to load user reactions: %w", err)
+	}
+	defer userRows.Close()
+
+	myReactions := []string{}
+	for userRows.Next() {
+		var reaction string
+		if err := userRows.Scan(&reaction); err != nil {
+			return nil, nil, fmt.Errorf("failed to scan user reactions: %w", err)
+		}
+		myReactions = append(myReactions, reaction)
+	}
+	if userRows.Err() != nil {
+		return nil, nil, fmt.Errorf("failed to iterate user reactions: %w", userRows.Err())
+	}
+
+	if err := tx.Commit(ctx); err != nil {
+		return nil, nil, fmt.Errorf("failed to commit reaction toggle: %w", err)
+	}
+
+	return counts, myReactions, nil
+}

go-backend/cmd/api/main.go

@@ -209,6 +209,7 @@ func main() {
 			authorized.GET("/posts/:id", postHandler.GetPost)
 			authorized.GET("/posts/:id/chain", postHandler.GetPostChain)
 			authorized.GET("/posts/:id/thread", postHandler.GetPostChain)
+			authorized.GET("/posts/:id/focus-context", postHandler.GetPostFocusContext)
 			authorized.PATCH("/posts/:id", postHandler.UpdatePost)
 			authorized.DELETE("/posts/:id", postHandler.DeletePost)
 			authorized.POST("/posts/:id/pin", postHandler.PinPost)
@@ -217,6 +218,7 @@ func main() {
 			authorized.DELETE("/posts/:id/like", postHandler.UnlikePost)
 			authorized.POST("/posts/:id/save", postHandler.SavePost)
 			authorized.DELETE("/posts/:id/save", postHandler.UnsavePost)
+			authorized.POST("/posts/:id/reactions/toggle", postHandler.ToggleReaction)
 			authorized.POST("/posts/:id/comments", postHandler.CreateComment)
 			authorized.GET("/feed", postHandler.GetFeed)
 			authorized.GET("/beacons/nearby", postHandler.GetNearbyBeacons)

go-backend/internal/database/migrations/20260131000001_add_post_reactions.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS post_reactions;

go-backend/internal/database/migrations/20260131000001_add_post_reactions.up.sql

@@ -0,0 +1,9 @@
+CREATE TABLE IF NOT EXISTS post_reactions (
+    user_id UUID NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+    post_id UUID NOT NULL REFERENCES posts(id) ON DELETE CASCADE,
+    emoji TEXT NOT NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    PRIMARY KEY (user_id, post_id, emoji)
+);
+
+CREATE INDEX IF NOT EXISTS idx_post_reactions_post_id ON post_reactions(post_id);

go-backend/internal/database/schema.sql

@@ -96,6 +96,16 @@ CREATE TABLE IF NOT EXISTS public.post_saves (
     PRIMARY KEY (post_id, user_id)
 );
 
+CREATE TABLE IF NOT EXISTS public.post_reactions (
+    post_id UUID REFERENCES public.posts(id) ON DELETE CASCADE,
+    user_id UUID REFERENCES public.profiles(id) ON DELETE CASCADE,
+    emoji TEXT NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    PRIMARY KEY (post_id, user_id, emoji)
+);
+
+CREATE INDEX IF NOT EXISTS idx_post_reactions_post_id ON public.post_reactions(post_id);
+
 CREATE TABLE IF NOT EXISTS public.follows (
     follower_id UUID REFERENCES public.profiles(id) ON DELETE CASCADE,
     following_id UUID REFERENCES public.profiles(id) ON DELETE CASCADE,

go-backend/internal/handlers/post_handler.go

@@ -2,6 +2,7 @@ package handlers
 
 import (
 	"net/http"
+	"strings"
 	"time"
 
 	"github.com/gin-gonic/gin"
@@ -528,6 +529,43 @@ func (h *PostHandler) GetPostChain(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"posts": posts})
 }
 
+func (h *PostHandler) GetPostFocusContext(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	focusContext, err := h.postRepo.GetPostFocusContext(c.Request.Context(), postID, userIDStr.(string))
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to fetch focus context", "details": err.Error()})
+		return
+	}
+
+	h.signPostMedia(focusContext.TargetPost)
+	h.signPostMedia(focusContext.ParentPost)
+	for i := range focusContext.Children {
+		h.signPostMedia(&focusContext.Children[i])
+	}
+
+	c.JSON(http.StatusOK, focusContext)
+}
+
+func (h *PostHandler) signPostMedia(post *models.Post) {
+	if post == nil {
+		return
+	}
+	if post.ImageURL != nil {
+		signed := h.assetService.SignImageURL(*post.ImageURL)
+		post.ImageURL = &signed
+	}
+	if post.VideoURL != nil {
+		signed := h.assetService.SignVideoURL(*post.VideoURL)
+		post.VideoURL = &signed
+	}
+	if post.ThumbnailURL != nil {
+		signed := h.assetService.SignImageURL(*post.ThumbnailURL)
+		post.ThumbnailURL = &signed
+	}
+}
+
 func (h *PostHandler) VouchBeacon(c *gin.Context) {
 	beaconID := c.Param("id")
 	userIDStr, _ := c.Get("user_id")
@@ -618,3 +656,33 @@ func (h *PostHandler) RemoveBeaconVote(c *gin.Context) {
 
 	c.JSON(http.StatusOK, gin.H{"message": "Beacon vote removed successfully"})
 }
+
+func (h *PostHandler) ToggleReaction(c *gin.Context) {
+	postID := c.Param("id")
+	userIDStr, _ := c.Get("user_id")
+
+	var req struct {
+		Emoji string `json:"emoji" binding:"required"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	emoji := strings.TrimSpace(req.Emoji)
+	if emoji == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Emoji is required"})
+		return
+	}
+
+	counts, myReactions, err := h.postRepo.ToggleReaction(c.Request.Context(), postID, userIDStr.(string), emoji)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to toggle reaction", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"reactions":    counts,
+		"my_reactions": myReactions,
+	})
+}

go-backend/internal/models/post.go

@@ -88,3 +88,11 @@ type TagResult struct {
 	Tag   string `json:"tag"`
 	Count int    `json:"count"`
 }
+
+// FocusContext represents the minimal data needed for the Focus-Context view
+type FocusContext struct {
+	TargetPost     *Post  `json:"target_post"`
+	ParentPost     *Post  `json:"parent_post,omitempty"`
+	Children       []Post `json:"children"`
+	ParentChildren []Post `json:"parent_children,omitempty"`
+}

go-backend/internal/repository/category_repository.go

@@ -116,7 +116,7 @@ func (r *PGCategoryRepository) SetUserCategorySettings(ctx context.Context, user
 }
 
 func (r *PGCategoryRepository) GetUserCategorySettings(ctx context.Context, userID string) ([]CategorySetting, error) {
-	query := `SELECT category_id, enabled FROM public.user_category_settings WHERE user_id = $1`
+	query := `SELECT category_id, enabled FROM public.user_category_settings WHERE user_id = $1::uuid`
 
 	rows, err := r.pool.Query(ctx, query, userID)
 	if err != nil {
@@ -140,7 +140,7 @@ func (r *PGCategoryRepository) GetUserCategorySettings(ctx context.Context, user
 func (r *PGCategoryRepository) GetEnabledCategoryIDs(ctx context.Context, userID string) ([]string, error) {
 	query := `
 		SELECT category_id FROM public.user_category_settings 
-		WHERE user_id = $1 AND enabled = true
+		WHERE user_id = $1::uuid AND enabled = true
 	`
 	rows, err := r.pool.Query(ctx, query, userID)
 	if err != nil {

go-backend/internal/repository/notification_repository.go

@@ -39,7 +39,7 @@ func (r *NotificationRepository) GetFCMTokensForUser(ctx context.Context, userID
 	query := `
 		SELECT token
 		FROM public.user_fcm_tokens
-		WHERE user_id = $1
+		WHERE user_id = $1::uuid
 	`
 	rows, err := r.pool.Query(ctx, query, userID)
 	if err != nil {
@@ -62,7 +62,7 @@ func (r *NotificationRepository) GetFCMTokensForUser(ctx context.Context, userID
 func (r *NotificationRepository) DeleteFCMToken(ctx context.Context, userID string, token string) error {
 	commandTag, err := r.pool.Exec(ctx, `
 		DELETE FROM public.user_fcm_tokens
-		WHERE user_id = $1 AND token = $2
+		WHERE user_id = $1::uuid AND token = $2
 	`, userID, token)
 	if err != nil {
 		return err
@@ -82,7 +82,7 @@ func (r *NotificationRepository) GetNotifications(ctx context.Context, userID st
 		FROM public.notifications n
 		JOIN public.profiles pr ON n.actor_id = pr.id
 		LEFT JOIN public.posts po ON n.post_id = po.id
-		WHERE n.user_id = $1
+		WHERE n.user_id = $1::uuid
 		ORDER BY n.created_at DESC
 		LIMIT $2 OFFSET $3
 	`

go-backend/internal/repository/post_repository.go

@@ -21,7 +21,7 @@ func (r *PostRepository) CreatePost(ctx context.Context, post *models.Post) erro
 	// Calculate confidence score if it's a beacon
 	if post.IsBeacon {
 		var harmonyScore int
-		err := r.pool.QueryRow(ctx, "SELECT harmony_score FROM public.trust_state WHERE user_id = $1", post.AuthorID).Scan(&harmonyScore)
+		err := r.pool.QueryRow(ctx, "SELECT harmony_score FROM public.trust_state WHERE user_id = $1::uuid", post.AuthorID).Scan(&harmonyScore)
 		if err == nil {
 			// Logic: confidence = harmony_score / 100.0 (legacy parity)
 			post.Confidence = float64(harmonyScore) / 100.0
@@ -91,7 +91,7 @@ func (r *PostRepository) GetRandomSponsoredPost(ctx context.Context, userID stri
 		  AND (
 		      p.category_id IS NULL OR EXISTS (
 		          SELECT 1 FROM public.user_category_settings ucs 
-		          WHERE ucs.user_id = NULLIF($1::text, '')::uuid AND ucs.category_id = p.category_id AND ucs.enabled = true
+		          WHERE ucs.user_id = CASE WHEN $1::text != '' THEN $1::text::uuid ELSE NULL END AND ucs.category_id = p.category_id AND ucs.enabled = true
 		      )
 		  )
 		ORDER BY RANDOM()
@@ -134,7 +134,7 @@ func (r *PostRepository) GetFeed(ctx context.Context, userID string, categorySlu
 			p.created_at,
 			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
 			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
-			CASE WHEN ($4::text) != '' THEN EXISTS(SELECT 1 FROM public.post_likes WHERE post_id = p.id AND user_id = NULLIF($4::text, '')::uuid) ELSE FALSE END as is_liked,
+			CASE WHEN ($4::text) != '' THEN EXISTS(SELECT 1 FROM public.post_likes WHERE post_id = p.id AND user_id = $4::text::uuid) ELSE FALSE END as is_liked,
 			p.allow_chain, p.visibility
 		FROM public.posts p
 		JOIN public.profiles pr ON p.author_id = pr.id
@@ -142,11 +142,11 @@ func (r *PostRepository) GetFeed(ctx context.Context, userID string, categorySlu
 		LEFT JOIN public.categories c ON p.category_id = c.id
 		WHERE p.deleted_at IS NULL AND p.status = 'active'
 		  AND (
-		      p.author_id = NULLIF($4::text, '')::uuid -- My own posts
+		      p.author_id = CASE WHEN $4::text != '' THEN $4::text::uuid ELSE NULL END -- My own posts
 		      OR pr.is_private = FALSE -- Public profiles
 		      OR EXISTS (
 		          SELECT 1 FROM public.follows f 
-		          WHERE f.follower_id = NULLIF($4::text, '')::uuid AND f.following_id = p.author_id AND f.status = 'accepted'
+		          WHERE f.follower_id = CASE WHEN $4::text != '' THEN $4::text::uuid ELSE NULL END AND f.following_id = p.author_id AND f.status = 'accepted'
 		      )
 		  )
 		  AND ($3 = FALSE OR (COALESCE(p.video_url, '') <> '' OR (COALESCE(p.image_url, '') ILIKE '%.mp4')))
@@ -225,11 +225,11 @@ func (r *PostRepository) GetPostsByAuthor(ctx context.Context, authorID string,
 		LEFT JOIN public.post_metrics m ON p.id = m.post_id
 		WHERE p.author_id = $1::uuid AND p.deleted_at IS NULL AND p.status = 'active'
 		  AND (
-		      p.author_id = NULLIF($4, '')::uuid -- Viewer is author
+		      p.author_id = CASE WHEN $4 != '' THEN $4::uuid ELSE NULL END -- Viewer is author
 		      OR pr.is_private = FALSE -- Public profile
 		      OR EXISTS (
 		          SELECT 1 FROM public.follows f 
-		          WHERE f.follower_id = NULLIF($4, '')::uuid AND f.following_id = p.author_id AND f.status = 'accepted'
+		          WHERE f.follower_id = CASE WHEN $4 != '' THEN $4::uuid ELSE NULL END AND f.following_id = p.author_id AND f.status = 'accepted'
 		      )
 		  )
 		ORDER BY p.created_at DESC 
@@ -280,27 +280,31 @@ func (r *PostRepository) GetPostByID(ctx context.Context, postID string, userID
 			p.duration_ms,
 			COALESCE(p.tags, ARRAY[]::text[]),
 			p.created_at,
+			p.chain_parent_id,
 			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
 			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
-			CASE WHEN $2 != '' THEN EXISTS(SELECT 1 FROM public.post_likes WHERE post_id = p.id AND user_id = $2::uuid) ELSE FALSE END as is_liked
+			CASE WHEN $2 != '' THEN EXISTS(SELECT 1 FROM public.post_likes WHERE post_id = p.id AND user_id = $2::uuid) ELSE FALSE END as is_liked,
+			p.allow_chain, p.visibility
 		FROM public.posts p
 		JOIN public.profiles pr ON p.author_id = pr.id
 		LEFT JOIN public.post_metrics m ON p.id = m.post_id
 		WHERE p.id = $1::uuid AND p.deleted_at IS NULL
 		  AND (
-		      p.author_id = NULLIF($2, '')::uuid
+		      p.author_id = CASE WHEN $2 != '' THEN $2::uuid ELSE NULL END
 		      OR pr.is_private = FALSE
 		      OR EXISTS (
 		          SELECT 1 FROM public.follows f 
-		          WHERE f.follower_id = NULLIF($2, '')::uuid AND f.following_id = p.author_id AND f.status = 'accepted'
+		          WHERE f.follower_id = CASE WHEN $2 != '' THEN $2::uuid ELSE NULL END AND f.following_id = p.author_id AND f.status = 'accepted'
 		      )
 		  )
 	`
 	var p models.Post
 	err := r.pool.QueryRow(ctx, query, postID, userID).Scan(
 		&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.VideoURL, &p.ThumbnailURL, &p.DurationMS, &p.Tags, &p.CreatedAt,
+		&p.ChainParentID,
 		&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
 		&p.LikeCount, &p.CommentCount, &p.IsLiked,
+		&p.AllowChain, &p.Visibility,
 	)
 	if err != nil {
 		return nil, err
@@ -368,25 +372,63 @@ func (r *PostRepository) UpdateVisibility(ctx context.Context, postID string, au
 }
 
 func (r *PostRepository) LikePost(ctx context.Context, postID string, userID string) error {
-	query := `INSERT INTO public.post_likes (post_id, user_id) VALUES ($1::uuid, $2::uuid) ON CONFLICT DO NOTHING`
+	query := `
+		WITH inserted AS (
+			INSERT INTO public.post_likes (post_id, user_id)
+			VALUES ($1::uuid, $2::uuid)
+			ON CONFLICT DO NOTHING
+			RETURNING 1
+		)
+		UPDATE public.post_metrics
+		SET like_count = like_count + (SELECT COUNT(*) FROM inserted)
+		WHERE post_id = $1::uuid
+	`
 	_, err := r.pool.Exec(ctx, query, postID, userID)
 	return err
 }
 
 func (r *PostRepository) UnlikePost(ctx context.Context, postID string, userID string) error {
-	query := `DELETE FROM public.post_likes WHERE post_id = $1::uuid AND user_id = $2::uuid`
+	query := `
+		WITH deleted AS (
+			DELETE FROM public.post_likes
+			WHERE post_id = $1::uuid AND user_id = $2::uuid
+			RETURNING 1
+		)
+		UPDATE public.post_metrics
+		SET like_count = GREATEST(like_count - (SELECT COUNT(*) FROM deleted), 0)
+		WHERE post_id = $1::uuid
+	`
 	_, err := r.pool.Exec(ctx, query, postID, userID)
 	return err
 }
 
 func (r *PostRepository) SavePost(ctx context.Context, postID string, userID string) error {
-	query := `INSERT INTO public.post_saves (post_id, user_id) VALUES ($1::uuid, $2::uuid) ON CONFLICT DO NOTHING`
+	query := `
+		WITH inserted AS (
+			INSERT INTO public.post_saves (post_id, user_id)
+			VALUES ($1::uuid, $2::uuid)
+			ON CONFLICT DO NOTHING
+			RETURNING 1
+		)
+		UPDATE public.post_metrics
+		SET save_count = save_count + (SELECT COUNT(*) FROM inserted)
+		WHERE post_id = $1::uuid
+	`
 	_, err := r.pool.Exec(ctx, query, postID, userID)
 	return err
 }
 
 func (r *PostRepository) UnsavePost(ctx context.Context, postID string, userID string) error {
-	query := `DELETE FROM public.post_saves WHERE post_id = $1::uuid AND user_id = $2::uuid`
+	query := `
+		WITH deleted AS (
+			DELETE FROM public.post_saves
+			WHERE post_id = $1::uuid AND user_id = $2::uuid
+			RETURNING 1
+		)
+		UPDATE public.post_metrics
+		SET save_count = GREATEST(save_count - (SELECT COUNT(*) FROM deleted), 0)
+		WHERE post_id = $1::uuid
+	`
 	_, err := r.pool.Exec(ctx, query, postID, userID)
 	return err
 }
@@ -462,12 +504,12 @@ func (r *PostRepository) GetSavedPosts(ctx context.Context, userID string, limit
 			p.created_at,
 			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
 			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
-			EXISTS(SELECT 1 FROM public.post_likes WHERE post_id = p.id AND user_id = $1) as is_liked
+			EXISTS(SELECT 1 FROM public.post_likes WHERE post_id = p.id AND user_id = $1::uuid) as is_liked
 		FROM public.post_saves ps
 		JOIN public.posts p ON ps.post_id = p.id
 		JOIN public.profiles pr ON p.author_id = pr.id
 		LEFT JOIN public.post_metrics m ON p.id = m.post_id
-		WHERE ps.user_id = $1 AND p.deleted_at IS NULL
+		WHERE ps.user_id = $1::uuid AND p.deleted_at IS NULL
 		ORDER BY ps.created_at DESC
 		LIMIT $2 OFFSET $3
 	`
@@ -516,7 +558,7 @@ func (r *PostRepository) GetLikedPosts(ctx context.Context, userID string, limit
 		JOIN public.posts p ON pl.post_id = p.id
 		JOIN public.profiles pr ON p.author_id = pr.id
 		LEFT JOIN public.post_metrics m ON p.id = m.post_id
-		WHERE pl.user_id = $1 AND p.deleted_at IS NULL
+		WHERE pl.user_id = $1::uuid AND p.deleted_at IS NULL
 		ORDER BY pl.created_at DESC
 		LIMIT $2 OFFSET $3
 	`
@@ -567,7 +609,7 @@ func (r *PostRepository) GetPostChain(ctx context.Context, rootID string) ([]mod
 			FROM public.posts p
 			JOIN public.profiles pr ON p.author_id = pr.id
 			LEFT JOIN public.post_metrics m ON p.id = m.post_id
-			WHERE p.id = $1 AND p.deleted_at IS NULL
+			WHERE p.id = $1::uuid AND p.deleted_at IS NULL
 
 			UNION ALL
 
@@ -676,11 +718,11 @@ func (r *PostRepository) SearchPosts(ctx context.Context, query string, viewerID
 		WHERE (p.body ILIKE $1 OR $2 = ANY(p.tags)) 
 		  AND p.deleted_at IS NULL AND p.status = 'active'
 		  AND (
-		      p.author_id = NULLIF($4, '')::uuid
+		      p.author_id = CASE WHEN $4 != '' THEN $4::uuid ELSE NULL END
 		      OR pr.is_private = FALSE
 		      OR EXISTS (
 		          SELECT 1 FROM public.follows f 
-		          WHERE f.follower_id = NULLIF($4, '')::uuid AND f.following_id = p.author_id AND f.status = 'accepted'
+		          WHERE f.follower_id = CASE WHEN $4 != '' THEN $4::uuid ELSE NULL END AND f.following_id = p.author_id AND f.status = 'accepted'
 		      )
 		  )
 		ORDER BY p.created_at DESC
@@ -857,3 +899,223 @@ func (r *PostRepository) RemoveBeaconVote(ctx context.Context, beaconID string,
 
 	return nil
 }
+
+// GetPostFocusContext retrieves minimal data for Focus-Context view
+// Returns: Target Post, Direct Parent (if any), and Direct Children (1st layer only)
+func (r *PostRepository) GetPostFocusContext(ctx context.Context, postID string, userID string) (*models.FocusContext, error) {
+	// Get target post
+	targetPost, err := r.GetPostByID(ctx, postID, userID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get target post: %w", err)
+	}
+
+	var parentPost *models.Post
+	var children []models.Post
+	var parentChildren []models.Post
+
+	// Get parent post if chain_parent_id exists
+	if targetPost.ChainParentID != nil {
+		parentPost, err = r.GetPostByID(ctx, targetPost.ChainParentID.String(), userID)
+		if err != nil {
+			// Parent might not exist or be inaccessible - continue without it
+			parentPost = nil
+		}
+	}
+
+	// Get direct children (1st layer replies only)
+	childrenQuery := `
+		SELECT 
+			p.id, p.author_id, p.category_id, p.body, 
+			COALESCE(p.image_url, ''),
+			CASE
+				WHEN COALESCE(p.video_url, '') <> '' THEN p.video_url
+				WHEN COALESCE(p.image_url, '') ILIKE '%.mp4' THEN p.image_url
+				ELSE ''
+			END AS resolved_video_url,
+			COALESCE(NULLIF(p.thumbnail_url, ''), p.image_url, '') AS resolved_thumbnail_url,
+			p.duration_ms,
+			COALESCE(p.tags, ARRAY[]::text[]),
+			p.created_at,
+			pr.handle as author_handle, pr.display_name as author_display_name, COALESCE(pr.avatar_url, '') as author_avatar_url,
+			COALESCE(m.like_count, 0) as like_count, COALESCE(m.comment_count, 0) as comment_count,
+			CASE WHEN $2 != '' THEN EXISTS(SELECT 1 FROM public.post_likes WHERE post_id = p.id AND user_id = $2::uuid) ELSE FALSE END as is_liked,
+			p.allow_chain, p.visibility
+		FROM public.posts p
+		JOIN public.profiles pr ON p.author_id = pr.id
+		LEFT JOIN public.post_metrics m ON p.id = m.post_id
+		WHERE p.chain_parent_id = $1::uuid AND p.deleted_at IS NULL AND p.status = 'active'
+		  AND (
+		      p.author_id = CASE WHEN $2 != '' THEN $2::uuid ELSE NULL END
+		      OR pr.is_private = FALSE
+		      OR EXISTS (
+		          SELECT 1 FROM public.follows f 
+		          WHERE f.follower_id = CASE WHEN $2 != '' THEN $2::uuid ELSE NULL END AND f.following_id = p.author_id AND f.status = 'accepted'
+		      )
+		  )
+		ORDER BY p.created_at ASC
+	`
+
+	rows, err := r.pool.Query(ctx, childrenQuery, postID, userID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get children posts: %w", err)
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var p models.Post
+		err := rows.Scan(
+			&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.VideoURL, &p.ThumbnailURL, &p.DurationMS, &p.Tags, &p.CreatedAt,
+			&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+			&p.LikeCount, &p.CommentCount, &p.IsLiked,
+			&p.AllowChain, &p.Visibility,
+		)
+		if err != nil {
+			return nil, fmt.Errorf("failed to scan child post: %w", err)
+		}
+		p.Author = &models.AuthorProfile{
+			ID:          p.AuthorID,
+			Handle:      p.AuthorHandle,
+			DisplayName: p.AuthorDisplayName,
+			AvatarURL:   p.AuthorAvatarURL,
+		}
+		children = append(children, p)
+	}
+
+	// If we have a parent, fetch its direct children (siblings + current)
+	if parentPost != nil {
+		siblingRows, err := r.pool.Query(ctx, childrenQuery, parentPost.ID.String(), userID)
+		if err != nil {
+			return nil, fmt.Errorf("failed to get parent children: %w", err)
+		}
+		defer siblingRows.Close()
+
+		for siblingRows.Next() {
+			var p models.Post
+			err := siblingRows.Scan(
+				&p.ID, &p.AuthorID, &p.CategoryID, &p.Body, &p.ImageURL, &p.VideoURL, &p.ThumbnailURL, &p.DurationMS, &p.Tags, &p.CreatedAt,
+				&p.AuthorHandle, &p.AuthorDisplayName, &p.AuthorAvatarURL,
+				&p.LikeCount, &p.CommentCount, &p.IsLiked,
+				&p.AllowChain, &p.Visibility,
+			)
+			if err != nil {
+				return nil, fmt.Errorf("failed to scan parent child post: %w", err)
+			}
+			p.Author = &models.AuthorProfile{
+				ID:          p.AuthorID,
+				Handle:      p.AuthorHandle,
+				DisplayName: p.AuthorDisplayName,
+				AvatarURL:   p.AuthorAvatarURL,
+			}
+			parentChildren = append(parentChildren, p)
+		}
+	}
+
+	return &models.FocusContext{
+		TargetPost:     targetPost,
+		ParentPost:     parentPost,
+		Children:       children,
+		ParentChildren: parentChildren,
+	}, nil
+}
+
+func (r *PostRepository) ToggleReaction(ctx context.Context, postID string, userID string, emoji string) (map[string]int, []string, error) {
+	tx, err := r.pool.Begin(ctx)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to start transaction: %w", err)
+	}
+	defer tx.Rollback(ctx)
+
+	var exists bool
+	err = tx.QueryRow(
+		ctx,
+		`SELECT EXISTS(
+			SELECT 1 FROM public.post_reactions
+			WHERE post_id = $1::uuid AND user_id = $2::uuid AND emoji = $3
+		)`,
+		postID,
+		userID,
+		emoji,
+	).Scan(&exists)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to check reaction: %w", err)
+	}
+
+	if exists {
+		if _, err := tx.Exec(
+			ctx,
+			`DELETE FROM public.post_reactions
+			 WHERE post_id = $1::uuid AND user_id = $2::uuid AND emoji = $3`,
+			postID,
+			userID,
+			emoji,
+		); err != nil {
+			return nil, nil, fmt.Errorf("failed to remove reaction: %w", err)
+		}
+	} else {
+		if _, err := tx.Exec(
+			ctx,
+			`INSERT INTO public.post_reactions (post_id, user_id, emoji)
+			 VALUES ($1::uuid, $2::uuid, $3)`,
+			postID,
+			userID,
+			emoji,
+		); err != nil {
+			return nil, nil, fmt.Errorf("failed to add reaction: %w", err)
+		}
+	}
+
+	rows, err := tx.Query(
+		ctx,
+		`SELECT emoji, COUNT(*) FROM public.post_reactions
+		 WHERE post_id = $1::uuid
+		 GROUP BY emoji`,
+		postID,
+	)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to load reaction counts: %w", err)
+	}
+	defer rows.Close()
+
+	counts := make(map[string]int)
+	for rows.Next() {
+		var reaction string
+		var count int
+		if err := rows.Scan(&reaction, &count); err != nil {
+			return nil, nil, fmt.Errorf("failed to scan reaction counts: %w", err)
+		}
+		counts[reaction] = count
+	}
+	if rows.Err() != nil {
+		return nil, nil, fmt.Errorf("failed to iterate reaction counts: %w", rows.Err())
+	}
+
+	userRows, err := tx.Query(
+		ctx,
+		`SELECT emoji FROM public.post_reactions
+		 WHERE post_id = $1::uuid AND user_id = $2::uuid`,
+		postID,
+		userID,
+	)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to load user reactions: %w", err)
+	}
+	defer userRows.Close()
+
+	myReactions := []string{}
+	for userRows.Next() {
+		var reaction string
+		if err := userRows.Scan(&reaction); err != nil {
+			return nil, nil, fmt.Errorf("failed to scan user reactions: %w", err)
+		}
+		myReactions = append(myReactions, reaction)
+	}
+	if userRows.Err() != nil {
+		return nil, nil, fmt.Errorf("failed to iterate user reactions: %w", userRows.Err())
+	}
+
+	if err := tx.Commit(ctx); err != nil {
+		return nil, nil, fmt.Errorf("failed to commit reaction toggle: %w", err)
+	}
+
+	return counts, myReactions, nil
+}

go-backend/internal/repository/user_repository.go

@@ -94,7 +94,7 @@ func (r *UserRepository) UpdateProfile(ctx context.Context, profile *models.Prof
 			is_private = COALESCE($12, is_private),
 			is_official = COALESCE($13, is_official),
 			updated_at = NOW()
-		WHERE id = $14
+		WHERE id = $14::uuid
 	`
 	_, err := r.pool.Exec(ctx, query,
 		profile.Handle, profile.DisplayName, profile.Bio, profile.AvatarURL,
@@ -889,7 +889,7 @@ func (r *UserRepository) DeletePasswordResetToken(ctx context.Context, tokenHash
 }
 
 func (r *UserRepository) UpdateUserPassword(ctx context.Context, userID string, passwordHash string) error {
-	query := `UPDATE public.users SET password_hash = $1, updated_at = NOW() WHERE id = $2`
+	query := `UPDATE public.users SET password_hash = $1, updated_at = NOW() WHERE id = $2::uuid`
 	_, err := r.pool.Exec(ctx, query, passwordHash, userID)
 	return err
 }

sojorn_app/lib/models/post.dart

@@ -69,6 +69,9 @@ class Post {
   final String? bodyFormat;
   final String? backgroundId;
   final List<String>? tags;
+  final Map<String, int>? reactions;
+  final List<String>? myReactions;
+  final Map<String, List<String>>? reactionUsers;
   
   final bool? isBeacon;
   final BeaconType? beaconType;
@@ -117,6 +120,9 @@ class Post {
     this.bodyFormat,
     this.backgroundId,
     this.tags,
+    this.reactions,
+    this.myReactions,
+    this.reactionUsers,
     this.isBeacon = false,
     this.beaconType,
     this.confidenceScore,
@@ -152,6 +158,35 @@ class Post {
     return null;
   }
 
+  static Map<String, int>? _parseReactions(dynamic value) {
+    if (value == null) return null;
+    if (value is Map<String, dynamic>) {
+      return value.map((key, val) => MapEntry(key, _parseInt(val) ?? 0));
+    }
+    return null;
+  }
+
+  static List<String>? _parseReactionsList(dynamic value) {
+    if (value == null) return null;
+    if (value is List) {
+      return value.map((item) => item.toString()).toList();
+    }
+    return null;
+  }
+
+  static Map<String, List<String>>? _parseReactionUsers(dynamic value) {
+    if (value == null) return null;
+    if (value is Map<String, dynamic>) {
+      return value.map((key, val) {
+        if (val is List) {
+          return MapEntry(key, val.map((item) => item.toString()).toList());
+        }
+        return MapEntry(key, <String>[]);
+      });
+    }
+    return null;
+  }
+
   static double _defaultCis(String tone) {
     switch (tone) {
       case 'positive':
@@ -220,6 +255,12 @@ class Post {
       bodyFormat: json['body_format'] as String?,
       backgroundId: json['background_id'] as String?,
       tags: _parseTags(json['tags']),
+      reactions: _parseReactions(
+          json['reactions'] ?? json['reaction_counts'] ?? json['reaction_map']),
+      myReactions: _parseReactionsList(
+          json['my_reactions'] ?? json['myReactions']),
+      reactionUsers: _parseReactionUsers(
+          json['reaction_users'] ?? json['reaction_users_preview']),
       isBeacon: json['is_beacon'] as bool?,
       beaconType: json['beacon_type'] != null ? BeaconType.fromString(json['beacon_type'] as String) : null,
       confidenceScore: _parseDouble(json['confidence_score']),
@@ -277,6 +318,9 @@ class Post {
       'duration_ms': durationMs,
       'has_video_content': hasVideoContent,
       'tags': tags,
+      'reactions': reactions,
+      'my_reactions': myReactions,
+      'reaction_users': reactionUsers,
     };
   }
 }
@@ -387,3 +431,40 @@ extension PostBeaconExtension on Post {
     );
   }
 }
+
+/// FocusContext represents the minimal data needed for the Focus-Context view
+class FocusContext {
+  final Post targetPost;
+  final Post? parentPost;
+  final List<Post> children;
+  final List<Post> parentChildren;
+
+  const FocusContext({
+    required this.targetPost,
+    this.parentPost,
+    required this.children,
+    this.parentChildren = const [],
+  });
+
+  factory FocusContext.fromJson(Map<String, dynamic> json) {
+    return FocusContext(
+      targetPost: Post.fromJson(json['target_post']),
+      parentPost: json['parent_post'] != null ? Post.fromJson(json['parent_post']) : null,
+      children: (json['children'] as List?)
+          ?.map((child) => Post.fromJson(child))
+          .toList() ?? [],
+      parentChildren: (json['parent_children'] as List?)
+          ?.map((child) => Post.fromJson(child))
+          .toList() ?? [],
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'target_post': targetPost.toJson(),
+      'parent_post': parentPost?.toJson(),
+      'children': children.map((child) => child.toJson()).toList(),
+      'parent_children': parentChildren.map((child) => child.toJson()).toList(),
+    };
+  }
+}

sojorn_app/lib/providers/header_state_provider.dart

@@ -0,0 +1,112 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+enum HeaderMode { feed, context }
+
+class HeaderState {
+  final HeaderMode mode;
+  final String title;
+  final VoidCallback? onBack;
+  final VoidCallback? onRefresh;
+  final List<Widget> trailingActions;
+
+  const HeaderState({
+    required this.mode,
+    required this.title,
+    this.onBack,
+    this.onRefresh,
+    this.trailingActions = const [],
+  });
+
+  HeaderState copyWith({
+    HeaderMode? mode,
+    String? title,
+    VoidCallback? onBack,
+    VoidCallback? onRefresh,
+    List<Widget>? trailingActions,
+  }) {
+    return HeaderState(
+      mode: mode ?? this.mode,
+      title: title ?? this.title,
+      onBack: onBack ?? this.onBack,
+      onRefresh: onRefresh ?? this.onRefresh,
+      trailingActions: trailingActions ?? this.trailingActions,
+    );
+  }
+
+  factory HeaderState.feed({
+    VoidCallback? onRefresh,
+    List<Widget> trailingActions = const [],
+  }) {
+    return HeaderState(
+      mode: HeaderMode.feed,
+      title: 'sojorn',
+      onRefresh: onRefresh,
+      trailingActions: trailingActions,
+    );
+  }
+
+  factory HeaderState.context({
+    required String title,
+    VoidCallback? onBack,
+    VoidCallback? onRefresh,
+    List<Widget> trailingActions = const [],
+  }) {
+    return HeaderState(
+      mode: HeaderMode.context,
+      title: title,
+      onBack: onBack,
+      onRefresh: onRefresh,
+      trailingActions: trailingActions,
+    );
+  }
+}
+
+class HeaderController extends ChangeNotifier {
+  HeaderState _state = HeaderState.feed();
+  VoidCallback? _feedRefresh;
+  List<Widget> _feedTrailingActions = const [];
+
+  HeaderState get state => _state;
+
+  void configureFeed({
+    VoidCallback? onRefresh,
+    List<Widget> trailingActions = const [],
+  }) {
+    _feedRefresh = onRefresh;
+    _feedTrailingActions = trailingActions;
+    if (_state.mode == HeaderMode.feed) {
+      _state = HeaderState.feed(
+        onRefresh: _feedRefresh,
+        trailingActions: _feedTrailingActions,
+      );
+      notifyListeners();
+    }
+  }
+
+  void setFeed() {
+    _state = HeaderState.feed(
+      onRefresh: _feedRefresh,
+      trailingActions: _feedTrailingActions,
+    );
+    notifyListeners();
+  }
+
+  void setContext({
+    required String title,
+    VoidCallback? onBack,
+    VoidCallback? onRefresh,
+    List<Widget> trailingActions = const [],
+  }) {
+    _state = HeaderState.context(
+      title: title,
+      onBack: onBack,
+      onRefresh: onRefresh,
+      trailingActions: trailingActions,
+    );
+    notifyListeners();
+  }
+}
+
+final headerControllerProvider =
+    ChangeNotifierProvider<HeaderController>((ref) => HeaderController());

sojorn_app/lib/routes/app_routes.dart

@@ -16,7 +16,7 @@ import '../screens/quips/feed/quips_feed_screen.dart';
 import '../screens/profile/profile_screen.dart';
 import '../screens/profile/viewable_profile_screen.dart';
 import '../screens/auth/auth_gate.dart';
-import '../screens/secure_chat/secure_chat_list_screen.dart';
+import '../screens/secure_chat/secure_chat_full_screen.dart';
 
 /// App routing config (GoRouter).
 class AppRoutes {
@@ -61,7 +61,7 @@ class AppRoutes {
       GoRoute(
         path: secureChat,
         parentNavigatorKey: rootNavigatorKey,
-        builder: (_, __) => const SecureChatListScreen(),
+        builder: (_, __) => const SecureChatFullScreen(),
       ),
       StatefulShellRoute.indexedStack(
         builder: (context, state, navigationShell) => AuthGate(

sojorn_app/lib/screens/compose/compose_screen.dart

@@ -70,6 +70,7 @@ class _ComposeScreenState extends ConsumerState<ComposeScreen> {
       _handleHashtagSuggestions();
     });
     WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!mounted) return;
       _bodyFocusNode.requestFocus();
     });
   }

sojorn_app/lib/screens/home/feed_personal_screen.dart

@@ -74,7 +74,7 @@ class _FeedPersonalScreenState extends ConsumerState<FeedPersonalScreen> {
   }
 
   void _openPostDetail(Post post) {
-    Navigator.of(context).push(
+    Navigator.of(context, rootNavigator: true).push(
       MaterialPageRoute(
         builder: (_) => PostDetailScreen(post: post),
       ),

sojorn_app/lib/screens/home/feed_sojorn_screen.dart

@@ -5,13 +5,13 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../../providers/api_provider.dart';
 import '../../providers/feed_refresh_provider.dart';
 import '../../models/post.dart';
-import '../../theme/sojorn_feed_palette.dart';
+import '../../theme/theme_extensions.dart';
 import '../../theme/app_theme.dart';
 import '../../widgets/post/sojorn_swipeable_post.dart';
 import '../../widgets/post/sponsored_post_card.dart';
 import '../../services/ad_integration_service.dart';
-import '../post/post_detail_screen.dart';
 import '../compose/compose_screen.dart';
+import '../post/post_detail_screen.dart';
 import '../profile/viewable_profile_screen.dart';
 
 /// sojorn feed - TikTok/Reels style immersive swipeable feed
@@ -120,7 +120,7 @@ class _FeedsojornScreenState extends ConsumerState<FeedsojornScreen> {
   }
 
   void _openPostDetail(Post post) {
-    Navigator.of(context).push(
+    Navigator.of(context, rootNavigator: true).push(
       MaterialPageRoute(
         builder: (_) => PostDetailScreen(post: post),
       ),
@@ -405,7 +405,7 @@ class _SponsoredPostSlide extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final palette = sojornFeedPalette.forId(post.id);
+    final palette = Theme.of(context).extension<SojornExt>()!.feedPalettes.forId(post.id);
     return Container(
       decoration: BoxDecoration(
         gradient: LinearGradient(

sojorn_app/lib/screens/home/home_shell.dart

@@ -89,7 +89,7 @@ class _HomeShellState extends State<HomeShell> with WidgetsBindingObserver {
         ],
       ),
       floatingActionButton: Transform.translate(
-        offset: const Offset(0, 8),
+        offset: const Offset(0, 12),
         child: GestureDetector(
           onTap: () => setState(() => _isRadialMenuVisible = !_isRadialMenuVisible),
           child: Container(
@@ -115,7 +115,9 @@ class _HomeShellState extends State<HomeShell> with WidgetsBindingObserver {
         ),
       ),
       floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
-      bottomNavigationBar: BottomAppBar(
+      bottomNavigationBar: Padding(
+        padding: const EdgeInsets.only(bottom: 2),
+        child: BottomAppBar(
           notchMargin: 8.0,
           padding: EdgeInsets.zero,
           height: 58,
@@ -161,6 +163,7 @@ class _HomeShellState extends State<HomeShell> with WidgetsBindingObserver {
             ),
           ),
         ),
+      ),
     );
   }
 
@@ -198,7 +201,7 @@ class _HomeShellState extends State<HomeShell> with WidgetsBindingObserver {
           icon: Icon(Icons.chat_bubble_outline, color: AppTheme.navyBlue),
           tooltip: 'Messages',
           onPressed: () {
-            Navigator.of(context).push(
+              Navigator.of(context, rootNavigator: true).push(
                 MaterialPageRoute(
                   builder: (_) => const SecureChatFullScreen(),
                   fullscreenDialog: true,

sojorn_app/lib/screens/notifications/notifications_screen.dart

@@ -8,8 +8,8 @@ import '../../providers/api_provider.dart';
 import '../../theme/app_theme.dart';
 import '../../widgets/app_scaffold.dart';
 import '../../widgets/media/signed_media_image.dart';
-import '../post/post_detail_screen.dart';
 import '../profile/viewable_profile_screen.dart';
+import '../post/post_detail_screen.dart';
 
 /// Notifications screen showing user activity
 class NotificationsScreen extends ConsumerStatefulWidget {
@@ -266,7 +266,7 @@ class _NotificationsScreenState extends ConsumerState<NotificationsScreen> {
             final post = await apiService.getPostById(notification.postId!);
 
             if (mounted) {
-              Navigator.of(context).push(
+              Navigator.of(context, rootNavigator: true).push(
                 MaterialPageRoute(
                   builder: (_) => PostDetailScreen(post: post),
                 ),

sojorn_app/lib/screens/post/focus_context_conversation_screen.dart

@@ -0,0 +1,23 @@
+import 'package:flutter/material.dart';
+import '../../models/post.dart';
+import 'threaded_conversation_screen.dart';
+
+/// Legacy alias for the Dynamic Block thread view.
+class FocusContextConversationScreen extends StatelessWidget {
+  final String postId;
+  final Post? initialPost;
+
+  const FocusContextConversationScreen({
+    super.key,
+    required this.postId,
+    this.initialPost,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return ThreadedConversationScreen(
+      rootPostId: postId,
+      rootPost: initialPost,
+    );
+  }
+}

sojorn_app/lib/screens/profile/profile_screen.dart

@@ -475,7 +475,8 @@ class _ProfileScreenState extends ConsumerState<ProfileScreen>
     final settings =
         _privacySettings ?? ProfilePrivacySettings.defaults(profile.id);
 
-    final result = await Navigator.of(context).push<ProfileSettingsResult>(
+    final result = await Navigator.of(context, rootNavigator: true)
+        .push<ProfileSettingsResult>(
       MaterialPageRoute(
         builder: (_) => ProfileSettingsScreen(
           profile: profile,
@@ -733,7 +734,7 @@ class _ProfileScreenState extends ConsumerState<ProfileScreen>
   }
 
   void _openPostDetail(Post post) {
-    Navigator.of(context).push(
+    Navigator.of(context, rootNavigator: true).push(
       MaterialPageRoute(
         builder: (_) => PostDetailScreen(post: post),
       ),

sojorn_app/lib/screens/profile/profile_settings_screen.dart

@@ -156,7 +156,9 @@ class _ProfileSettingsScreenState extends ConsumerState<ProfileSettingsScreen> {
       setState(
           () => _errorMessage = e.toString().replaceAll('Exception: ', ''));
     } finally {
-      if (mounted) setState(() => _isSaving = false);
+      if (mounted) {
+        setState(() => _isSaving = false);
+      }
     }
   }
 

sojorn_app/lib/screens/profile/viewable_profile_screen.dart

@@ -2,7 +2,6 @@ import 'dart:async';
 
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:go_router/go_router.dart';
 import '../../models/post.dart';
 import '../../models/profile.dart';
 import '../../models/profile_privacy_settings.dart';
@@ -15,12 +14,12 @@ import '../../utils/url_launcher_helper.dart';
 import '../../widgets/post_item.dart';
 import '../../widgets/media/signed_media_image.dart';
 import '../compose/compose_screen.dart';
-import '../post/post_detail_screen.dart';
-import '../secure_chat/secure_chat_modal_sheet.dart';
+import '../secure_chat/secure_chat_screen.dart';
 import '../../services/auth_service.dart';
 import '../../services/secure_chat_service.dart';
+import '../post/post_detail_screen.dart';
 import 'profile_settings_screen.dart';
-import '../../routes/app_routes.dart';
+import 'profile_screen.dart';
 
 /// Screen for viewing another user's profile
 class ViewableProfileScreen extends ConsumerStatefulWidget {
@@ -290,7 +289,7 @@ class _ViewableProfileScreenState extends ConsumerState<ViewableProfileScreen>
   }
 
   void _openPostDetail(Post post) {
-    Navigator.of(context).push(
+    Navigator.of(context, rootNavigator: true).push(
       MaterialPageRoute(
         builder: (_) => PostDetailScreen(post: post),
       ),
@@ -327,11 +326,10 @@ class _ViewableProfileScreenState extends ConsumerState<ViewableProfileScreen>
         return;
       }
 
-      showModalBottomSheet(
-        context: context,
-        backgroundColor: Colors.transparent,
-        isScrollControlled: true,
-        builder: (context) => SecureChatModal(conversation: conversation),
+      Navigator.of(context, rootNavigator: true).push(
+        MaterialPageRoute(
+          builder: (_) => SecureChatScreen(conversation: conversation),
+        ),
       );
     } catch (error) {
       if (!mounted) return;
@@ -351,7 +349,8 @@ class _ViewableProfileScreenState extends ConsumerState<ViewableProfileScreen>
     final settings =
         _privacySettings ?? ProfilePrivacySettings.defaults(profile.id);
 
-    final result = await Navigator.of(context).push<ProfileSettingsResult>(
+    final result = await Navigator.of(context, rootNavigator: true)
+        .push<ProfileSettingsResult>(
       MaterialPageRoute(
         builder: (_) => ProfileSettingsScreen(
           profile: profile,
@@ -532,7 +531,11 @@ class _ViewableProfileScreenState extends ConsumerState<ViewableProfileScreen>
             if (navigator.canPop()) {
               navigator.pop();
             } else {
-              context.go(AppRoutes.homeAlias);
+              Navigator.of(context).pushReplacement(
+                MaterialPageRoute(
+                  builder: (_) => const ProfileScreen(),
+                ),
+              );
             }
           },
         ),

sojorn_app/lib/screens/quips/feed/quips_feed_screen.dart

@@ -407,7 +407,7 @@ class _QuipsFeedScreenState extends ConsumerState<QuipsFeedScreen>
     try {
       final post = await api.getPostById(quip.id);
       if (!mounted) return;
-      Navigator.of(context).push(
+      Navigator.of(context, rootNavigator: true).push(
         MaterialPageRoute(
           builder: (_) => PostDetailScreen(post: post),
         ),

sojorn_app/lib/screens/search/search_screen.dart

@@ -203,7 +203,7 @@ class _SearchScreenState extends ConsumerState<SearchScreen> {
   }
 
   void _openPostDetail(Post post) {
-    Navigator.of(context).push(
+    Navigator.of(context, rootNavigator: true).push(
       MaterialPageRoute(
         builder: (_) => PostDetailScreen(post: post),
       ),

sojorn_app/lib/screens/secure_chat/secure_chat_list_screen.dart

@@ -1,653 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:google_fonts/google_fonts.dart';
-import 'package:timeago/timeago.dart' as timeago;
-import '../../models/secure_chat.dart';
-import '../../services/secure_chat_service.dart';
-import '../../theme/app_theme.dart';
-import '../../widgets/media/signed_media_image.dart';
-import 'secure_chat_modal_sheet.dart';
-import 'new_conversation_sheet.dart';
-
-/// List of secure E2EE conversations
-/// Unified chat list screen with AppTheme styling
-class SecureChatListScreen extends StatefulWidget {
-  const SecureChatListScreen({super.key});
-
-  @override
-  State<SecureChatListScreen> createState() => _SecureChatListScreenState();
-}
-
-class _SecureChatListScreenState extends State<SecureChatListScreen> {
-  final SecureChatService _chatService = SecureChatService();
-
-  List<SecureConversation> _conversations = [];
-  bool _isLoading = true;
-  bool _isInitializing = false;
-  String? _error;
-
-  late Stream<List<SecureConversation>> _conversationStream;
-
-  @override
-  void initState() {
-    super.initState();
-    
-    // Create LIVE stream that automatically updates
-    _conversationStream = Stream.periodic(const Duration(seconds: 2))
-        .asyncMap((_) => _chatService.getConversations())
-        .asBroadcastStream();
-    
-    // Also trigger immediate reload on conversation changes
-    _chatService.conversationListChanges.listen((_) {
-      if (mounted) {
-        print('[UI] Conversation list changed - stream will update');
-        setState(() {}); // Force rebuild to get latest from stream
-      }
-    });
-    
-    _initialize();
-  }
-
-  Future<void> _initialize() async {
-    setState(() => _isInitializing = true);
-
-    try {
-      // Check if E2EE is ready
-      final isReady = await _chatService.isReady();
-      if (!isReady) {
-        await _chatService.initialize();
-      }
-      await _loadConversations();
-    } catch (e) {
-      if (mounted) {
-        setState(() {
-          _error = 'Failed to initialize secure messaging';
-          _isInitializing = false;
-        });
-      }
-    }
-  }
-
-  Future<void> _loadConversations() async {
-    if (mounted) {
-      setState(() => _isLoading = true);
-    }
-
-    try {
-      final conversations = await _chatService.getConversations();
-      if (mounted) {
-        setState(() {
-          _conversations = conversations;
-          _isLoading = false;
-        });
-      }
-    } catch (e) {
-      if (mounted) {
-        setState(() => _isLoading = false);
-      }
-      print('[ChatList] Error loading conversations: $e');
-    }
-  }
-
-  Future<void> _uploadAllKeys() async {
-    try {
-      print('[ChatList] Manual key upload requested');
-      await _chatService.uploadKeysManually();
-      
-      if (mounted) {
-        ScaffoldMessenger.of(context).showSnackBar(
-          const SnackBar(
-            content: Text('Keys uploaded to backend!'),
-            backgroundColor: Colors.blue,
-          ),
-        );
-      }
-    } catch (e) {
-      if (mounted) {
-        ScaffoldMessenger.of(context).showSnackBar(
-          SnackBar(
-            content: Text('Error uploading keys: $e'),
-            backgroundColor: AppTheme.error,
-          ),
-        );
-      }
-    }
-  }
-
-  void _startNewConversation() {
-    showModalBottomSheet(
-      context: context,
-      backgroundColor: Colors.transparent,
-      isScrollControlled: true,
-      builder: (context) => NewConversationSheet(
-        onConversationStarted: (conversation) {
-          Navigator.pop(context);
-          _openConversation(conversation);
-        },
-      ),
-    );
-  }
-
-  void _openConversation(SecureConversation conversation) {
-    showModalBottomSheet(
-      context: context,
-      backgroundColor: Colors.transparent,
-      isScrollControlled: true,
-      builder: (context) => SecureChatModal(conversation: conversation),
-    ).then((_) => _loadConversations());
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: AppTheme.scaffoldBg,
-      appBar: AppBar(
-        backgroundColor: AppTheme.scaffoldBg,
-        elevation: 0,
-        surfaceTintColor: Colors.transparent,
-        leading: IconButton(
-          onPressed: () => Navigator.of(context).pop(),
-          icon: Icon(Icons.arrow_back, color: AppTheme.navyBlue),
-        ),
-        title: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: [
-            Text(
-              'Messages',
-              style: GoogleFonts.literata(
-                fontWeight: FontWeight.w600,
-                color: AppTheme.navyBlue,
-                fontSize: 18,
-              ),
-            ),
-            Text(
-              'End-to-end encrypted',
-              style: GoogleFonts.inter(
-                color: AppTheme.textDisabled,
-                fontSize: 11,
-              ),
-            ),
-          ],
-        ),
-        actions: [
-          Container(
-            padding: const EdgeInsets.symmetric(horizontal: 8),
-            decoration: BoxDecoration(
-              color: Colors.blue.withOpacity(0.1),
-              borderRadius: BorderRadius.circular(4),
-            ),
-            child: TextButton(
-              onPressed: _uploadAllKeys,
-              child: Text(
-                '🔑 UPLOAD KEYS',
-                style: GoogleFonts.inter(
-                  color: Colors.blue,
-                  fontSize: 10,
-                  fontWeight: FontWeight.bold,
-                ),
-              ),
-            ),
-          ),
-          IconButton(
-            onPressed: _loadConversations,
-            icon: Icon(Icons.refresh, color: AppTheme.navyBlue),
-          ),
-        ],
-      ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _startNewConversation,
-        backgroundColor: AppTheme.brightNavy,
-        child: const Icon(Icons.edit, color: Colors.white),
-      ),
-      body: _buildBody(),
-    );
-  }
-
-  Widget _buildBody() {
-    if (_isInitializing) {
-      return _buildInitializingState();
-    }
-
-    // LIVE StreamBuilder - constantly updating
-    return StreamBuilder<List<SecureConversation>>(
-      stream: _conversationStream,
-      builder: (context, snapshot) {
-        if (snapshot.hasError) {
-          return _buildErrorState();
-        }
-
-        final conversations = snapshot.data ?? [];
-        
-        if (snapshot.connectionState == ConnectionState.waiting && conversations.isEmpty) {
-          return Center(
-            child: CircularProgressIndicator(color: AppTheme.ksuPurple),
-          );
-        }
-
-        if (conversations.isEmpty) {
-          return _buildEmptyState();
-        }
-
-        return RefreshIndicator(
-          onRefresh: () async {
-            setState(() {}); // Trigger stream rebuild
-          },
-          child: _buildConversationList(conversations),
-        );
-      },
-    );
-  }
-
-  Widget _buildConversationList(List<SecureConversation> conversations) {
-    return ListView.separated(
-      padding: const EdgeInsets.symmetric(vertical: 8),
-      itemCount: conversations.length,
-      separatorBuilder: (_, __) => Divider(
-        height: 1,
-        indent: 72,
-        color: AppTheme.navyBlue.withValues(alpha: 0.1),
-      ),
-      itemBuilder: (context, index) =>
-          _buildConversationTile(conversations[index]),
-    );
-  }
-
-  Widget _buildInitializingState() {
-    return Center(
-      child: Padding(
-        padding: const EdgeInsets.all(32),
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            Container(
-              width: 80,
-              height: 80,
-              decoration: BoxDecoration(
-                color: AppTheme.queenPink.withValues(alpha: 0.3),
-                shape: BoxShape.circle,
-              ),
-              child: Icon(
-                Icons.key,
-                size: 40,
-                color: AppTheme.brightNavy,
-              ),
-            ),
-            const SizedBox(height: 24),
-            Text(
-              'Setting up encryption...',
-              style: GoogleFonts.literata(
-                fontWeight: FontWeight.w600,
-                color: AppTheme.navyBlue,
-                fontSize: 18,
-              ),
-            ),
-            const SizedBox(height: 8),
-            Text(
-              'Generating secure keys',
-              style: GoogleFonts.inter(
-                color: AppTheme.textDisabled,
-                fontSize: 14,
-              ),
-              textAlign: TextAlign.center,
-            ),
-            const SizedBox(height: 24),
-            CircularProgressIndicator(color: AppTheme.brightNavy),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _buildErrorState() {
-    return Center(
-      child: Padding(
-        padding: const EdgeInsets.all(32),
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            Icon(
-              Icons.error_outline,
-              size: 64,
-              color: AppTheme.error,
-            ),
-            const SizedBox(height: 16),
-            Text(
-              _error ?? 'An error occurred',
-              style: GoogleFonts.literata(
-                color: AppTheme.navyBlue,
-                fontSize: 16,
-              ),
-              textAlign: TextAlign.center,
-            ),
-            const SizedBox(height: 24),
-            ElevatedButton.icon(
-              onPressed: _initialize,
-              icon: const Icon(Icons.refresh),
-              label: Text('Retry', style: GoogleFonts.inter()),
-              style: ElevatedButton.styleFrom(
-                backgroundColor: AppTheme.brightNavy,
-                foregroundColor: Colors.white,
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _buildEmptyState() {
-    return Center(
-      child: Padding(
-        padding: const EdgeInsets.all(32),
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            Container(
-              width: 80,
-              height: 80,
-              decoration: BoxDecoration(
-                color: AppTheme.queenPink.withValues(alpha: 0.3),
-                shape: BoxShape.circle,
-              ),
-              child: Icon(
-                Icons.chat_bubble_outline,
-                size: 40,
-                color: AppTheme.brightNavy,
-              ),
-            ),
-            const SizedBox(height: 24),
-            Text(
-              'No messages yet',
-              style: GoogleFonts.literata(
-                fontWeight: FontWeight.w600,
-                color: AppTheme.navyBlue,
-                fontSize: 18,
-              ),
-            ),
-            const SizedBox(height: 8),
-            Text(
-              'Start a conversation with someone you mutually follow',
-              style: GoogleFonts.inter(
-                color: AppTheme.textDisabled,
-                fontSize: 14,
-              ),
-              textAlign: TextAlign.center,
-            ),
-            const SizedBox(height: 8),
-            Text(
-              'Long press on conversations to delete',
-              style: GoogleFonts.inter(
-                color: AppTheme.textDisabled,
-                fontSize: 12,
-                fontStyle: FontStyle.italic,
-              ),
-              textAlign: TextAlign.center,
-            ),
-            const SizedBox(height: 24),
-            ElevatedButton.icon(
-              onPressed: _startNewConversation,
-              icon: const Icon(Icons.edit),
-              label: Text('New Message', style: GoogleFonts.inter(fontWeight: FontWeight.w600)),
-              style: ElevatedButton.styleFrom(
-                backgroundColor: AppTheme.brightNavy,
-                foregroundColor: Colors.white,
-                padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 12),
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _buildConversationTile(SecureConversation conversation) {
-    final hasUnread = (conversation.unreadCount ?? 0) > 0;
-    final displayName = conversation.otherUserDisplayName ??
-        '@${conversation.otherUserHandle ?? 'Unknown'}';
-
-    return GestureDetector(
-      onLongPress: () => _showConversationMenu(conversation),
-      child: InkWell(
-        onTap: () => _openConversation(conversation),
-        child: Container(
-          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
-          child: Row(
-            children: [
-              // Avatar
-              CircleAvatar(
-                radius: 24,
-                backgroundColor: AppTheme.queenPink.withValues(alpha: 0.3),
-                child: conversation.otherUserAvatarUrl != null
-                    ? ClipOval(
-                        child: SizedBox(
-                          width: 48,
-                          height: 48,
-                          child: SignedMediaImage(
-                            url: conversation.otherUserAvatarUrl!,
-                            width: 48,
-                            height: 48,
-                            fit: BoxFit.cover,
-                          ),
-                        ),
-                      )
-                    : Text(
-                        displayName.isNotEmpty
-                            ? displayName[0].toUpperCase()
-                            : '?',
-                        style: GoogleFonts.inter(
-                          color: AppTheme.navyBlue,
-                          fontWeight: FontWeight.bold,
-                          fontSize: 16,
-                        ),
-                      ),
-              ),
-              const SizedBox(width: 12),
-              // Name and time
-              Expanded(
-                child: Column(
-                  crossAxisAlignment: CrossAxisAlignment.start,
-                  children: [
-                    Row(
-                      children: [
-                        Expanded(
-                          child: Text(
-                            displayName,
-                            style: GoogleFonts.literata(
-                              fontWeight: hasUnread ? FontWeight.w700 : FontWeight.w600,
-                              color: AppTheme.navyBlue,
-                              fontSize: 15,
-                            ),
-                            maxLines: 1,
-                            overflow: TextOverflow.ellipsis,
-                          ),
-                        ),
-                        Icon(
-                          Icons.lock,
-                          size: 12,
-                          color: AppTheme.brightNavy.withValues(alpha: 0.5),
-                        ),
-                      ],
-                    ),
-                    const SizedBox(height: 4),
-                    Row(
-                      children: [
-                        Expanded(
-                          child: Text(
-                            timeago.format(conversation.lastMessageAt),
-                            style: GoogleFonts.inter(
-                              color: AppTheme.textDisabled,
-                              fontSize: 12,
-                            ),
-                          ),
-                        ),
-                        if (hasUnread)
-                          Container(
-                            padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
-                            decoration: BoxDecoration(
-                              color: AppTheme.brightNavy,
-                              borderRadius: BorderRadius.circular(10),
-                            ),
-                            child: Text(
-                              '${conversation.unreadCount}',
-                              style: GoogleFonts.inter(
-                                color: Colors.white,
-                                fontSize: 11,
-                                fontWeight: FontWeight.bold,
-                              ),
-                            ),
-                          ),
-                      ],
-                    ),
-                  ],
-                ),
-              ),
-              const SizedBox(width: 8),
-              Icon(
-                Icons.chevron_right,
-                color: AppTheme.navyBlue.withValues(alpha: 0.3),
-                size: 20,
-              ),
-            ],
-          ),
-        ),
-      ),
-    );
-  }
-
-  void _showConversationMenu(SecureConversation conversation) {
-    final displayName = conversation.otherUserDisplayName ??
-        '@${conversation.otherUserHandle ?? 'Unknown'}';
-
-    showModalBottomSheet(
-      context: context,
-      backgroundColor: AppTheme.cardSurface,
-      shape: const RoundedRectangleBorder(
-        borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
-      ),
-      builder: (context) => SafeArea(
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            Container(
-              width: 40,
-              height: 4,
-              margin: const EdgeInsets.symmetric(vertical: 12),
-              decoration: BoxDecoration(
-                color: AppTheme.navyBlue.withValues(alpha: 0.2),
-                borderRadius: BorderRadius.circular(2),
-              ),
-            ),
-            Padding(
-              padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
-              child: Text(
-                'Chat with $displayName',
-                style: GoogleFonts.literata(
-                  fontSize: 16,
-                  fontWeight: FontWeight.bold,
-                  color: AppTheme.navyBlue,
-                ),
-              ),
-            ),
-            const Divider(),
-            ListTile(
-              leading: Icon(Icons.delete, color: AppTheme.error),
-              title: Text(
-                'Delete Conversation',
-                style: GoogleFonts.inter(color: AppTheme.error),
-              ),
-              subtitle: Text(
-                'Remove all messages permanently',
-                style: GoogleFonts.inter(
-                  color: AppTheme.textDisabled,
-                  fontSize: 12,
-                ),
-              ),
-              onTap: () {
-                Navigator.pop(context);
-                _deleteConversation(conversation);
-              },
-            ),
-            const SizedBox(height: 8),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Future<void> _deleteConversation(SecureConversation conversation) async {
-    final confirmed = await showDialog<bool>(
-      context: context,
-      builder: (context) => AlertDialog(
-        backgroundColor: AppTheme.cardSurface,
-        title: Text(
-          'Delete Conversation',
-          style: GoogleFonts.literata(
-            color: AppTheme.navyBlue,
-            fontWeight: FontWeight.w600,
-          ),
-        ),
-        content: Text(
-          'This will delete all messages in this conversation. This action cannot be undone.',
-          style: GoogleFonts.inter(color: AppTheme.navyText),
-        ),
-        actions: [
-          TextButton(
-            onPressed: () => Navigator.pop(context, false),
-            child: Text(
-              'Cancel',
-              style: GoogleFonts.inter(color: AppTheme.egyptianBlue),
-            ),
-          ),
-          TextButton(
-            onPressed: () => Navigator.pop(context, true),
-            child: Text(
-              'Delete',
-              style: GoogleFonts.inter(color: AppTheme.error),
-            ),
-          ),
-        ],
-      ),
-    );
-
-    if (confirmed == true) {
-      try {
-        final result = await _chatService.deleteConversation(
-          conversation.id,
-          fullDelete: true,
-        );
-
-        if (result.success) {
-          _loadConversations();
-          if (mounted) {
-            ScaffoldMessenger.of(context).showSnackBar(
-              SnackBar(
-                content: Text(
-                  'Conversation deleted',
-                  style: GoogleFonts.inter(),
-                ),
-                backgroundColor: AppTheme.brightNavy,
-              ),
-            );
-          }
-        } else {
-          if (mounted) {
-            ScaffoldMessenger.of(context).showSnackBar(
-              SnackBar(
-                content: Text(result.error ?? 'Failed to delete chat'),
-                backgroundColor: AppTheme.error,
-              ),
-            );
-          }
-        }
-      } catch (e) {
-        if (mounted) {
-          ScaffoldMessenger.of(context).showSnackBar(
-            SnackBar(
-              content: Text('Error: $e'),
-              backgroundColor: AppTheme.error,
-            ),
-          );
-        }
-      }
-    }
-  }
-}

sojorn_app/lib/screens/secure_chat/secure_chat_modal_sheet.dart

@@ -1,794 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:google_fonts/google_fonts.dart';
-import 'package:timeago/timeago.dart' as timeago;
-import '../../models/secure_chat.dart';
-import '../../services/secure_chat_service.dart';
-import '../../theme/app_theme.dart';
-import '../../widgets/media/signed_media_image.dart';
-import 'secure_chat_screen.dart';
-import 'new_conversation_sheet.dart';
-
-/// Modal sheet for secure chat list
-/// Displays conversations in a modal bottom sheet that stays within shell context
-class SecureChatModalSheet extends StatefulWidget {
-  const SecureChatModalSheet({super.key});
-
-  @override
-  State<SecureChatModalSheet> createState() => _SecureChatModalSheetState();
-}
-
-class _SecureChatModalSheetState extends State<SecureChatModalSheet> {
-  final SecureChatService _chatService = SecureChatService();
-
-  List<SecureConversation> _conversations = [];
-  bool _isLoading = true;
-  bool _isInitializing = false;
-  String? _error;
-
-  late Stream<List<SecureConversation>> _conversationStream;
-
-  @override
-  void initState() {
-    super.initState();
-    
-    // Create LIVE stream that automatically updates every 2 seconds
-    _conversationStream = Stream.periodic(const Duration(seconds: 2))
-        .asyncMap((_) => _chatService.getConversations())
-        .asBroadcastStream();
-    
-    // Also trigger immediate reload on conversation changes
-    _chatService.conversationListChanges.listen((_) {
-      if (mounted) {
-        print('[UI] Conversation list changed in modal - stream will update');
-        setState(() {}); // Force rebuild to get latest from stream
-      }
-    });
-    
-    _initialize();
-  }
-
-  Future<void> _initialize() async {
-    setState(() => _isInitializing = true);
-
-    try {
-      // Check if E2EE is ready
-      final isReady = await _chatService.isReady();
-      if (!isReady) {
-        await _chatService.initialize();
-      }
-      await _loadConversations();
-    } catch (e) {
-      if (mounted) {
-        setState(() {
-          _error = 'Failed to initialize secure messaging';
-          _isInitializing = false;
-        });
-      }
-    }
-  }
-
-  Future<void> _loadConversations() async {
-    setState(() {
-      _isLoading = true;
-      _error = null;
-    });
-
-    try {
-      final conversations = await _chatService.getConversations();
-      if (mounted) {
-        setState(() {
-          _conversations = conversations;
-          _isLoading = false;
-          _isInitializing = false;
-        });
-      }
-    } catch (e) {
-      if (mounted) {
-        setState(() {
-          _error = 'Failed to load conversations';
-          _isLoading = false;
-          _isInitializing = false;
-        });
-      }
-    }
-  }
-
-  void _startNewConversation() {
-    showModalBottomSheet(
-      context: context,
-      backgroundColor: Colors.transparent,
-      isScrollControlled: true,
-      builder: (context) => NewConversationSheet(
-        onConversationStarted: (conversation) {
-          Navigator.pop(context);
-          _openConversation(conversation);
-        },
-      ),
-    );
-  }
-
-  void _openConversation(SecureConversation conversation) {
-    // Close the chat list modal first
-    Navigator.of(context).pop();
-
-    // Open individual chat as a modal sheet
-    showModalBottomSheet(
-      context: context,
-      backgroundColor: Colors.transparent,
-      isScrollControlled: true,
-      builder: (context) => SecureChatModal(conversation: conversation),
-    );
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return DraggableScrollableSheet(
-      expand: false,
-      initialChildSize: 0.8,
-      minChildSize: 0.5,
-      maxChildSize: 0.95,
-      builder: (context, scrollController) => Container(
-        decoration: BoxDecoration(
-          color: AppTheme.scaffoldBg,
-          borderRadius: const BorderRadius.vertical(top: Radius.circular(20)),
-        ),
-        child: Column(
-          children: [
-            // Header
-            Container(
-              padding: const EdgeInsets.all(16),
-              decoration: BoxDecoration(
-                border: Border(
-                  bottom: BorderSide(
-                    color: AppTheme.navyBlue.withValues(alpha: 0.1),
-                    width: 1,
-                  ),
-                ),
-              ),
-              child: Row(
-                children: [
-                  Text(
-                    'Messages',
-                    style: GoogleFonts.literata(
-                      fontWeight: FontWeight.w600,
-                      color: AppTheme.navyBlue,
-                      fontSize: 18,
-                    ),
-                  ),
-                  const SizedBox(width: 8),
-                  Text(
-                    'End-to-end encrypted',
-                    style: GoogleFonts.inter(
-                      color: AppTheme.textDisabled,
-                      fontSize: 11,
-                    ),
-                  ),
-                  const Spacer(),
-                  IconButton(
-                    onPressed: _loadConversations,
-                    icon: Icon(Icons.refresh, color: AppTheme.navyBlue),
-                  ),
-                  IconButton(
-                    onPressed: () => Navigator.of(context).pop(),
-                    icon: Icon(Icons.close, color: AppTheme.navyBlue),
-                  ),
-                ],
-              ),
-            ),
-
-            // FAB positioned at bottom right
-            Expanded(
-              child: Stack(
-                children: [
-                  _buildBody(scrollController),
-                  Positioned(
-                    right: 16,
-                    bottom: 16,
-                    child: FloatingActionButton(
-                      onPressed: _startNewConversation,
-                      backgroundColor: AppTheme.brightNavy,
-                      child: const Icon(Icons.edit, color: Colors.white),
-                    ),
-                  ),
-                ],
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _buildBody(ScrollController scrollController) {
-    if (_isInitializing) {
-      return _buildInitializingState();
-    }
-
-    // LIVE StreamBuilder - constantly updating
-    return StreamBuilder<List<SecureConversation>>(
-      stream: _conversationStream,
-      builder: (context, snapshot) {
-        if (snapshot.hasError) {
-          return _buildErrorState();
-        }
-
-        final conversations = snapshot.data ?? [];
-        
-        if (snapshot.connectionState == ConnectionState.waiting && conversations.isEmpty) {
-          return Center(
-            child: CircularProgressIndicator(color: AppTheme.ksuPurple),
-          );
-        }
-
-        if (conversations.isEmpty) {
-          return _buildEmptyState();
-        }
-
-        return ListView.separated(
-          controller: scrollController,
-          padding: const EdgeInsets.symmetric(vertical: 8),
-          itemCount: conversations.length,
-          separatorBuilder: (_, __) => Divider(
-            height: 1,
-            indent: 72,
-            color: AppTheme.navyBlue.withValues(alpha: 0.1),
-          ),
-          itemBuilder: (context, index) =>
-              _buildConversationTile(conversations[index]),
-        );
-      },
-    );
-  }
-
-  Widget _buildInitializingState() {
-    return Center(
-      child: Padding(
-        padding: const EdgeInsets.all(32),
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            Container(
-              width: 80,
-              height: 80,
-              decoration: BoxDecoration(
-                color: AppTheme.queenPink.withValues(alpha: 0.3),
-                shape: BoxShape.circle,
-              ),
-              child: Icon(
-                Icons.key,
-                size: 40,
-                color: AppTheme.brightNavy,
-              ),
-            ),
-            const SizedBox(height: 24),
-            Text(
-              'Setting up encryption...',
-              style: GoogleFonts.literata(
-                fontWeight: FontWeight.w600,
-                color: AppTheme.navyBlue,
-                fontSize: 18,
-              ),
-            ),
-            const SizedBox(height: 8),
-            Text(
-              'Generating secure keys',
-              style: GoogleFonts.inter(
-                color: AppTheme.textDisabled,
-                fontSize: 14,
-              ),
-              textAlign: TextAlign.center,
-            ),
-            const SizedBox(height: 24),
-            CircularProgressIndicator(color: AppTheme.brightNavy),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _buildErrorState() {
-    return Center(
-      child: Padding(
-        padding: const EdgeInsets.all(32),
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            Icon(
-              Icons.error_outline,
-              size: 64,
-              color: AppTheme.error,
-            ),
-            const SizedBox(height: 16),
-            Text(
-              _error ?? 'An error occurred',
-              style: GoogleFonts.literata(
-                color: AppTheme.navyBlue,
-                fontSize: 16,
-              ),
-              textAlign: TextAlign.center,
-            ),
-            const SizedBox(height: 24),
-            ElevatedButton.icon(
-              onPressed: _initialize,
-              icon: const Icon(Icons.refresh),
-              label: Text('Retry', style: GoogleFonts.inter()),
-              style: ElevatedButton.styleFrom(
-                backgroundColor: AppTheme.brightNavy,
-                foregroundColor: Colors.white,
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _buildEmptyState() {
-    return Center(
-      child: Padding(
-        padding: const EdgeInsets.all(32),
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            Container(
-              width: 80,
-              height: 80,
-              decoration: BoxDecoration(
-                color: AppTheme.queenPink.withValues(alpha: 0.3),
-                shape: BoxShape.circle,
-              ),
-              child: Icon(
-                Icons.chat_bubble_outline,
-                size: 40,
-                color: AppTheme.brightNavy,
-              ),
-            ),
-            const SizedBox(height: 24),
-            Text(
-              'No messages yet',
-              style: GoogleFonts.literata(
-                fontWeight: FontWeight.w600,
-                color: AppTheme.navyBlue,
-                fontSize: 18,
-              ),
-            ),
-            const SizedBox(height: 8),
-            Text(
-              'Start a conversation with someone you mutually follow',
-              style: GoogleFonts.inter(
-                color: AppTheme.textDisabled,
-                fontSize: 14,
-              ),
-              textAlign: TextAlign.center,
-            ),
-            const SizedBox(height: 8),
-            Text(
-              'Long press on conversations to delete',
-              style: GoogleFonts.inter(
-                color: AppTheme.textDisabled,
-                fontSize: 12,
-                fontStyle: FontStyle.italic,
-              ),
-              textAlign: TextAlign.center,
-            ),
-            const SizedBox(height: 24),
-            ElevatedButton.icon(
-              onPressed: _startNewConversation,
-              icon: const Icon(Icons.edit),
-              label: Text('New Message', style: GoogleFonts.inter(fontWeight: FontWeight.w600)),
-              style: ElevatedButton.styleFrom(
-                backgroundColor: AppTheme.brightNavy,
-                foregroundColor: Colors.white,
-                padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 12),
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget _buildConversationTile(SecureConversation conversation) {
-    final hasUnread = (conversation.unreadCount ?? 0) > 0;
-    final displayName = conversation.otherUserDisplayName ??
-        '@${conversation.otherUserHandle ?? 'Unknown'}';
-
-    return GestureDetector(
-      onLongPress: () => _showConversationMenu(conversation),
-      child: InkWell(
-        onTap: () => _openConversation(conversation),
-        child: Container(
-          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
-          child: Row(
-            children: [
-              // Avatar
-              CircleAvatar(
-                radius: 24,
-                backgroundColor: AppTheme.queenPink.withValues(alpha: 0.3),
-                child: conversation.otherUserAvatarUrl != null
-                    ? ClipOval(
-                        child: SizedBox(
-                          width: 48,
-                          height: 48,
-                          child: SignedMediaImage(
-                            url: conversation.otherUserAvatarUrl!,
-                            width: 48,
-                            height: 48,
-                            fit: BoxFit.cover,
-                          ),
-                        ),
-                      )
-                    : Text(
-                        displayName.isNotEmpty
-                            ? displayName[0].toUpperCase()
-                            : '?',
-                        style: GoogleFonts.inter(
-                          color: AppTheme.navyBlue,
-                          fontWeight: FontWeight.bold,
-                          fontSize: 16,
-                        ),
-                      ),
-              ),
-              const SizedBox(width: 12),
-              // Name and time
-              Expanded(
-                child: Column(
-                  crossAxisAlignment: CrossAxisAlignment.start,
-                  children: [
-                    Row(
-                      children: [
-                        Expanded(
-                          child: Text(
-                            displayName,
-                            style: GoogleFonts.literata(
-                              fontWeight: hasUnread ? FontWeight.w700 : FontWeight.w600,
-                              color: AppTheme.navyBlue,
-                              fontSize: 15,
-                            ),
-                            maxLines: 1,
-                            overflow: TextOverflow.ellipsis,
-                          ),
-                        ),
-                        Icon(
-                          Icons.lock,
-                          size: 12,
-                          color: AppTheme.brightNavy.withValues(alpha: 0.5),
-                        ),
-                      ],
-                    ),
-                    const SizedBox(height: 4),
-                    Row(
-                      children: [
-                        Expanded(
-                          child: Text(
-                            timeago.format(conversation.lastMessageAt),
-                            style: GoogleFonts.inter(
-                              color: AppTheme.textDisabled,
-                              fontSize: 12,
-                            ),
-                          ),
-                        ),
-                        if (hasUnread)
-                          Container(
-                            padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
-                            decoration: BoxDecoration(
-                              color: AppTheme.brightNavy,
-                              borderRadius: BorderRadius.circular(10),
-                            ),
-                            child: Text(
-                              '${conversation.unreadCount}',
-                              style: GoogleFonts.inter(
-                                color: Colors.white,
-                                fontSize: 11,
-                                fontWeight: FontWeight.bold,
-                              ),
-                            ),
-                          ),
-                      ],
-                    ),
-                  ],
-                ),
-              ),
-              const SizedBox(width: 8),
-              Icon(
-                Icons.chevron_right,
-                color: AppTheme.navyBlue.withValues(alpha: 0.3),
-                size: 20,
-              ),
-            ],
-          ),
-        ),
-      ),
-    );
-  }
-
-  void _showConversationMenu(SecureConversation conversation) {
-    final displayName = conversation.otherUserDisplayName ??
-        '@${conversation.otherUserHandle ?? 'Unknown'}';
-
-    showModalBottomSheet(
-      context: context,
-      backgroundColor: AppTheme.cardSurface,
-      shape: const RoundedRectangleBorder(
-        borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
-      ),
-      builder: (context) => SafeArea(
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            Container(
-              width: 40,
-              height: 4,
-              margin: const EdgeInsets.symmetric(vertical: 12),
-              decoration: BoxDecoration(
-                color: AppTheme.navyBlue.withValues(alpha: 0.2),
-                borderRadius: BorderRadius.circular(2),
-              ),
-            ),
-            Padding(
-              padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
-              child: Text(
-                'Chat with $displayName',
-                style: GoogleFonts.literata(
-                  fontSize: 16,
-                  fontWeight: FontWeight.bold,
-                  color: AppTheme.navyBlue,
-                ),
-              ),
-            ),
-            const Divider(),
-            ListTile(
-              leading: Icon(Icons.delete, color: AppTheme.error),
-              title: Text(
-                'Delete Conversation',
-                style: GoogleFonts.inter(color: AppTheme.error),
-              ),
-              subtitle: Text(
-                'Remove all messages permanently',
-                style: GoogleFonts.inter(
-                  color: AppTheme.textDisabled,
-                  fontSize: 12,
-                ),
-              ),
-              onTap: () {
-                Navigator.pop(context);
-                _deleteConversation(conversation);
-              },
-            ),
-            const SizedBox(height: 8),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Future<void> _deleteConversation(SecureConversation conversation) async {
-    final confirmed = await showDialog<bool>(
-      context: context,
-      builder: (context) => AlertDialog(
-        backgroundColor: AppTheme.cardSurface,
-        title: Text(
-          'Delete Conversation',
-          style: GoogleFonts.literata(
-            color: AppTheme.navyBlue,
-            fontWeight: FontWeight.w600,
-          ),
-        ),
-        content: Text(
-          'This will delete all messages in this conversation. This action cannot be undone.',
-          style: GoogleFonts.inter(color: AppTheme.navyText),
-        ),
-        actions: [
-          TextButton(
-            onPressed: () => Navigator.pop(context, false),
-            child: Text(
-              'Cancel',
-              style: GoogleFonts.inter(color: AppTheme.egyptianBlue),
-            ),
-          ),
-          TextButton(
-            onPressed: () => Navigator.pop(context, true),
-            child: Text(
-              'Delete',
-              style: GoogleFonts.inter(color: AppTheme.error),
-            ),
-          ),
-        ],
-      ),
-    );
-
-    if (confirmed == true) {
-      try {
-        final result = await _chatService.deleteConversation(
-          conversation.id,
-          fullDelete: true,
-        );
-
-        if (result.success) {
-          _loadConversations();
-          if (mounted) {
-            ScaffoldMessenger.of(context).showSnackBar(
-              SnackBar(
-                content: Text(
-                  'Conversation deleted',
-                  style: GoogleFonts.inter(),
-                ),
-                backgroundColor: AppTheme.brightNavy,
-              ),
-            );
-          }
-        } else {
-          if (mounted) {
-            ScaffoldMessenger.of(context).showSnackBar(
-              SnackBar(
-                content: Text(result.error ?? 'Failed to delete chat'),
-                backgroundColor: AppTheme.error,
-              ),
-            );
-          }
-        }
-      } catch (e) {
-        if (mounted) {
-          ScaffoldMessenger.of(context).showSnackBar(
-            SnackBar(
-              content: Text('Error: $e'),
-              backgroundColor: AppTheme.error,
-            ),
-          );
-        }
-      }
-    }
-  }
-}
-
-/// Modal sheet for individual secure chat conversation
-class SecureChatModal extends StatefulWidget {
-  final SecureConversation conversation;
-
-  const SecureChatModal({super.key, required this.conversation});
-
-  @override
-  State<SecureChatModal> createState() => _SecureChatModalState();
-}
-
-class _SecureChatModalState extends State<SecureChatModal> {
-  @override
-  Widget build(BuildContext context) {
-    return DraggableScrollableSheet(
-      expand: false,
-      initialChildSize: 0.9,
-      minChildSize: 0.7,
-      maxChildSize: 0.95,
-      builder: (context, scrollController) => Container(
-        decoration: BoxDecoration(
-          color: AppTheme.scaffoldBg,
-          borderRadius: const BorderRadius.vertical(top: Radius.circular(20)),
-        ),
-        child: Column(
-          children: [
-            // Header with conversation info
-            Container(
-              padding: const EdgeInsets.all(16),
-              decoration: BoxDecoration(
-                border: Border(
-                  bottom: BorderSide(
-                    color: AppTheme.navyBlue.withValues(alpha: 0.1),
-                    width: 1,
-                  ),
-                ),
-              ),
-              child: Row(
-                children: [
-                  CircleAvatar(
-                    radius: 20,
-                    backgroundColor: AppTheme.queenPink.withValues(alpha: 0.3),
-                    child: widget.conversation.otherUserAvatarUrl != null
-                        ? ClipOval(
-                            child: SizedBox(
-                              width: 40,
-                              height: 40,
-                              child: SignedMediaImage(
-                                url: widget.conversation.otherUserAvatarUrl!,
-                                width: 40,
-                                height: 40,
-                                fit: BoxFit.cover,
-                              ),
-                            ),
-                          )
-                        : Text(
-                            (widget.conversation.otherUserDisplayName ??
-                                    '@${widget.conversation.otherUserHandle ?? 'Unknown'}')
-                                .isNotEmpty
-                                ? (widget.conversation.otherUserDisplayName ??
-                                        '@${widget.conversation.otherUserHandle ?? 'Unknown'}')[0]
-                                    .toUpperCase()
-                                : '?',
-                            style: GoogleFonts.inter(
-                              color: AppTheme.navyBlue,
-                              fontWeight: FontWeight.bold,
-                              fontSize: 14,
-                            ),
-                          ),
-                  ),
-                  const SizedBox(width: 12),
-                  Expanded(
-                    child: Column(
-                      crossAxisAlignment: CrossAxisAlignment.start,
-                      children: [
-                        Text(
-                          widget.conversation.otherUserDisplayName ??
-                              '@${widget.conversation.otherUserHandle ?? 'Unknown'}',
-                          style: GoogleFonts.literata(
-                            fontWeight: FontWeight.w600,
-                            color: AppTheme.navyBlue,
-                            fontSize: 16,
-                          ),
-                        ),
-                        Row(
-                          children: [
-                            Icon(
-                              Icons.lock,
-                              size: 12,
-                              color: AppTheme.brightNavy.withValues(alpha: 0.5),
-                            ),
-                            const SizedBox(width: 4),
-                            Text(
-                              'End-to-end encrypted',
-                              style: GoogleFonts.inter(
-                                color: AppTheme.textDisabled,
-                                fontSize: 11,
-                              ),
-                            ),
-                          ],
-                        ),
-                      ],
-                    ),
-                  ),
-                  Row(
-                    mainAxisSize: MainAxisSize.min,
-                    children: [
-                      Container(
-                        padding: const EdgeInsets.symmetric(horizontal: 6),
-                        decoration: BoxDecoration(
-                          color: Colors.blue.withOpacity(0.1),
-                          borderRadius: BorderRadius.circular(4),
-                        ),
-                        child: TextButton(
-                          onPressed: () {
-                            final chatService = SecureChatService();
-                            chatService.uploadKeysManually();
-                          },
-                          child: Text(
-                            '🔑',
-                            style: GoogleFonts.inter(
-                              color: Colors.blue,
-                              fontSize: 12,
-                              fontWeight: FontWeight.bold,
-                            ),
-                          ),
-                        ),
-                      ),
-                      IconButton(
-                        onPressed: () => Navigator.of(context).pop(),
-                        icon: Icon(Icons.close, color: AppTheme.navyBlue),
-                      ),
-                    ],
-                  ),
-                ],
-              ),
-            ),
-
-            // Chat content
-            Expanded(
-              child: SecureChatScreen(
-                conversation: widget.conversation,
-                isModal: true,
-                scrollController: scrollController,
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-}

sojorn_app/lib/screens/secure_chat/secure_chat_screen.dart

@@ -303,6 +303,7 @@ class _SecureChatScreenState extends State<SecureChatScreen>
         }
 
         WidgetsBinding.instance.addPostFrameCallback((_) {
+          if (!mounted) return;
           _markAsRead();
           _refreshActiveHeader(items);
           _updateStickyDateLabel();
@@ -549,6 +550,7 @@ class _SecureChatScreenState extends State<SecureChatScreen>
 
   void _updateStickyDateLabel() {
     WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!mounted) return;
       final listContext = _listViewportKey.currentContext;
       if (listContext == null) return;
       final listBox = listContext.findRenderObject() as RenderBox?;

sojorn_app/lib/services/api_service.dart

@@ -460,6 +460,16 @@ class ApiService {
     return posts.map((p) => Post.fromJson(p)).toList();
   }
 
+  /// Get Focus-Context data for the new interactive block system
+  /// Returns: Target Post, Direct Parent (if any), and Direct Children (1st layer only)
+  Future<FocusContext> getPostFocusContext(String postId) async {
+    final data = await _callGoApi(
+      '/posts/$postId/focus-context',
+      method: 'GET',
+    );
+    return FocusContext.fromJson(data);
+  }
+
   // =========================================================================
   // Publishing - Unified Post/Beacon Flow
   // =========================================================================
@@ -837,6 +847,18 @@ class ApiService {
     return '${ApiConfig.baseUrl}/media/signed?path=$path'; // Placeholder
   }
 
+  Future<Map<String, dynamic>> toggleReaction(String postId, String emoji) async {
+    final data = await callGoApi(
+      '/posts/$postId/reactions/toggle',
+      method: 'POST',
+      body: {'emoji': emoji},
+    );
+    if (data is Map<String, dynamic>) {
+      return data;
+    }
+    return {};
+  }
+
   Future<SearchResults> search(String query) async {
     try {
       final data = await callGoApi(

sojorn_app/lib/services/feed_navigation_service.dart

@@ -6,7 +6,7 @@ import '../screens/post/threaded_conversation_screen.dart';
 class FeedNavigationService {
   static void openQuipsFeed(BuildContext context, Post post) {
     // Navigate to Quips feed with the specific video
-    Navigator.of(context).push(
+    Navigator.of(context, rootNavigator: true).push(
       MaterialPageRoute(
         builder: (context) => QuipsFeedScreen(
           initialPostId: post.id,
@@ -18,7 +18,7 @@ class FeedNavigationService {
 
   static void openThreadedConversation(BuildContext context, String postId) {
     // Navigate to threaded conversation for regular posts
-    Navigator.of(context).push(
+    Navigator.of(context, rootNavigator: true).push(
       MaterialPageRoute(
         builder: (context) => ThreadedConversationScreen(
           rootPostId: postId,

sojorn_app/lib/services/image_upload_service.dart

@@ -146,19 +146,29 @@ class ImageUploadService {
     }
 
     File sanitizedFile;
+    bool useRawUpload = false;
     try {
       sanitizedFile = await MediaSanitizer.sanitizeImage(imageFile);
     } catch (e) {
+      final message = e.toString();
+      if (message.contains('Unsupported operation') || message.contains('_Namespace')) {
+        // Fallback: upload original bytes without processing for unsupported formats.
+        useRawUpload = true;
+        sanitizedFile = imageFile;
+      } else {
         throw UploadException('Image sanitization failed: $e');
       }
+    }
 
     final fileName = sanitizedFile.path.split('/').last;
-    const contentType = 'image/jpeg';
+    final contentType = useRawUpload ? _contentTypeForFileName(fileName) : 'image/jpeg';
 
     // 2. Process image with filter if provided
     Uint8List fileBytes;
 
-    if (filter != null && filter.id != 'none') {
+    if (useRawUpload) {
+      fileBytes = await sanitizedFile.readAsBytes();
+    } else if (filter != null && filter.id != 'none') {
       onProgress?.call(0.1);
       final processed = await _processImage(sanitizedFile, filter, maxWidth, maxHeight, quality);
       fileBytes = processed.bytes;
@@ -506,6 +516,28 @@ class ImageUploadService {
 
     return url;
   }
+
+  String _contentTypeForFileName(String fileName) {
+    final extension = fileName.split('.').last.toLowerCase();
+    switch (extension) {
+      case 'jpg':
+      case 'jpeg':
+        return 'image/jpeg';
+      case 'png':
+        return 'image/png';
+      case 'gif':
+        return 'image/gif';
+      case 'webp':
+        return 'image/webp';
+      case 'svg':
+        return 'image/svg+xml';
+      case 'heic':
+      case 'heif':
+        return 'image/heic';
+      default:
+        return 'application/octet-stream';
+    }
+  }
 }
 
 class ImageValidationResult {

sojorn_app/lib/services/simple_e2ee_service.dart

@@ -217,6 +217,12 @@ class SimpleE2EEService {
         if (await _testKeyCompatibility()) {
           // Check if keys exist on backend, upload if not
           if (await _checkKeysExistOnBackend()) {
+            final backendValid = await _validateBackendKeyBundle(userId);
+            if (!backendValid) {
+              print('[E2EE] Backend key bundle failed signature verification - reuploading');
+              await _uploadExistingKeys();
+              return;
+            }
             print('[E2EE] Keys exist on backend - ready');
             return;
           } else {
@@ -296,6 +302,50 @@ class SimpleE2EEService {
     return false;
   }
 
+  Future<bool> _validateBackendKeyBundle(String userId) async {
+    try {
+      final bundle = await _api.getKeyBundle(userId);
+
+      String? ikField = bundle['identity_key_public'];
+      if (ikField == null && bundle['identity_key'] is Map) {
+        ikField = bundle['identity_key']['public_key'];
+      } else if (ikField == null) {
+        ikField = bundle['identity_key'];
+      }
+
+      String? spkField = bundle['signed_prekey_public'];
+      String? spkSignature = bundle['signed_prekey_signature'];
+      if (spkField == null && bundle['signed_prekey'] is Map) {
+        spkField = bundle['signed_prekey']['public_key'];
+        spkSignature = bundle['signed_prekey']['signature'];
+      } else if (spkField == null) {
+        spkField = bundle['signed_prekey'];
+      }
+
+      if (ikField == null || ikField.isEmpty) return false;
+      if (spkField == null || spkField.isEmpty) return false;
+      if (spkSignature == null || spkSignature.isEmpty) return false;
+
+      final ikParts = ikField.split(':');
+      if (ikParts.length != 2) return false;
+
+      final skBytes = base64Decode(ikParts[0]);
+      final spkBytes = base64Decode(spkField);
+      final sigBytes = base64Decode(spkSignature);
+
+      final theirSk = SimplePublicKey(skBytes, type: KeyPairType.ed25519);
+      final verified = await _signingAlgo.verify(
+        spkBytes,
+        signature: Signature(sigBytes, publicKey: theirSk),
+      );
+
+      return verified;
+    } catch (e) {
+      print('[E2EE] Backend key bundle validation failed: $e');
+      return false;
+    }
+  }
+
   // Smart key recovery that preserves messages when possible
   Future<void> initiateKeyRecovery(String userId) async {
     print('[E2EE] Starting smart key recovery...');
@@ -655,6 +705,11 @@ class SimpleE2EEService {
       await _api.callGoApi('/keys/otk/$keyId', method: 'DELETE');
       print('[E2EE] Deleted used OTK #$keyId from server');
     } catch (e) {
+      final message = e.toString();
+      if (message.contains('route not found') || message.contains('404')) {
+        print('[E2EE] OTK delete endpoint missing on backend; skipping cleanup for #$keyId');
+        return;
+      }
       print('[E2EE] Error deleting OTK #$keyId: $e');
     }
   }

sojorn_app/lib/theme/app_theme.dart

@@ -2,183 +2,91 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:google_fonts/google_fonts.dart';
 
+import 'theme_extensions.dart';
+import 'tokens.dart';
+
 enum AppThemeType {
   basic,
   pop,
 }
 
 class AppTheme {
-  // ============================================================================
-  // BASIC THEME PALETTE (Current/Original Theme)
-  // ============================================================================
-  
-  // ANCHORS (The 60%)
-  static const Color basicNavyBlue = Color(0xFF000383);
-  static const Color basicNavyText = Color(0xFF000383);
-  
-  // FLOW & STRUCTURE (The 30%)
-  static const Color basicEgyptianBlue = Color(0xFF0E38AE);
-  static const Color basicBrightNavy = Color(0xFF1974D1);
-  
-  // ACCENTS (The 10%)
-  static const Color basicRoyalPurple = Color(0xFF7751A8);
-  static const Color basicKsuPurple = Color(0xFF512889);
-  
-  // NEUTRALS & BACKGROUNDS
-  static const Color basicQueenPink = Color(0xFFE5C0DD);
-  static const Color basicQueenPinkLight = Color(0xFFF9F2F7);
-  static const Color basicWhite = Color(0xFFFFFFFF);
-
-  // ============================================================================
-  // POP THEME PALETTE - "Awakening" - High Contrast & Energy
-  // ============================================================================
-
-  // 60% - The Anchors (Deep & Grounded)
-  static const Color popNavyBlue = Color(0xFF000383);
-  static const Color popNavyText = Color(0xFF0D1050);
-
-  // 30% - Structure & Flow (Bright & Defined)
-  static const Color popEgyptianBlue = Color(0xFF0E38AE);
-  static const Color popBrightNavy = Color(0xFF1974D1);
-
-  // 10% - The Pop (Vibrant Accents)
-  static const Color popRoyalPurple = Color(0xFF7751A8);
-  static const Color popKsuPurple = Color(0xFF512889);
-
-  // Backgrounds - The "Clean" Space
-  static const Color popScaffoldBg = Color(0xFFF9F6F9);
-  static const Color popCardSurface = Colors.white;
-  
-  // Interaction
-  static const Color popHighlight = Color(0xFFE5C0DD);
-
-  // ============================================================================
-  // CURRENT THEME COLORS (Dynamic based on selected theme)
-  // ============================================================================
-
   static AppThemeType _currentThemeType = AppThemeType.basic;
 
   static void setThemeType(AppThemeType type) {
     _currentThemeType = type;
   }
 
-  static bool get isPop => _currentThemeType == AppThemeType.pop;
+  static const Map<AppThemeType, SojornExt> _extensions = {
+    AppThemeType.basic: SojornExt.basic,
+    AppThemeType.pop: SojornExt.pop,
+  };
 
-  // Dynamic color getters
-  static Color get navyBlue => isPop ? popNavyBlue : basicNavyBlue;
-  static Color get navyText => isPop ? popNavyText : basicNavyText;
-  static Color get egyptianBlue => isPop ? popEgyptianBlue : basicEgyptianBlue;
-  static Color get brightNavy => isPop ? popBrightNavy : basicBrightNavy;
-  static Color get royalPurple => isPop ? popRoyalPurple : basicRoyalPurple;
-  static Color get ksuPurple => isPop ? popKsuPurple : basicKsuPurple;
-  static Color get queenPink => isPop ? popHighlight : basicQueenPink;
-  static Color get queenPinkLight => scaffoldBg; // Alias for backward compatibility
-  static Color get scaffoldBg => isPop ? popScaffoldBg : basicQueenPinkLight;
-  static Color get cardSurface => isPop ? popCardSurface : basicWhite;
-  static const Color white = basicWhite;
+  static SojornExt get ext => _extensions[_currentThemeType]!;
+  static SojornBrandColors get _brand => ext.brandColors;
+  static SojornFlowLines get _lines => ext.flowLines;
 
-  // SEMANTIC
-  static const Color error = Color(0xFFD32F2F);
-  static const Color success = basicKsuPurple;
-  static const Color warning = Color(0xFFFBC02D);
-  static const Color info = Color(0xFF2196F3);
+  // Backward compatible color getters.
+  static Color get navyBlue => _brand.navyBlue;
+  static Color get navyText => _brand.navyText;
+  static Color get egyptianBlue => _brand.egyptianBlue;
+  static Color get brightNavy => _brand.brightNavy;
+  static Color get royalPurple => _brand.royalPurple;
+  static Color get ksuPurple => _brand.ksuPurple;
+  static Color get queenPink => _brand.queenPink;
+  static Color get queenPinkLight => _brand.queenPinkLight;
+  static Color get scaffoldBg => _brand.scaffoldBg;
+  static Color get cardSurface => _brand.cardSurface;
+  static const Color white = SojornColors.basicWhite;
+
+  // Semantic
+  static const Color error = SojornColors.error;
+  static Color get success => ksuPurple;
+  static const Color warning = SojornColors.warning;
+  static const Color info = SojornColors.info;
 
   // Trust Tiers
-  static Color get tierEstablished => egyptianBlue;
-  static Color get tierTrusted => royalPurple;
-  static const Color tierNew = Colors.grey;
+  static Color get tierEstablished => ext.trustTierColors.established;
+  static Color get tierTrusted => ext.trustTierColors.trusted;
+  static Color get tierNew => ext.trustTierColors.fresh;
 
-  // ============================================================================
-  // DIMENSIONS
-  // ============================================================================
+  // Dimensions
+  static const double spacingSm = SojornSpacing.sm;
+  static const double spacingMd = SojornSpacing.md;
+  static const double spacingLg = SojornSpacing.lg;
+  static const double spacingXs = SojornSpacing.xs;
+  static const double spacing2xs = SojornSpacing.xxs;
 
-  static const double spacingSm = 12.0;
-  static const double spacingMd = 16.0;
-  static const double spacingLg = 24.0;
-  static const double spacingXs = 4.0;
-  static const double spacing2xs = 2.0;
+  static const double radiusSm = SojornRadii.sm;
+  static const double radiusXs = SojornRadii.xs;
+  static const double radiusMd = SojornRadii.md;
+  static const double radiusMdValue = SojornRadii.md;
+  static const double radiusFull = SojornRadii.full;
 
-  // Radii
-  static const double radiusSm = 4.0;
-  static const double radiusXs = 2.0;
-  static const double radiusMd = 8.0;
-  static const double radiusMdValue = 8.0;
-  static const double radiusFull = 36.0;
-
-  // Text Colors - COLOR HIERARCHY: Content neutral, UI branded
-  static Color get textPrimary => navyText;      // Names, handles, UI
-  static Color get textSecondary => navyText;    // Names, handles, UI
-  static Color get textTertiary => navyText;     // Names, handles, UI
-  static const Color textDisabled = Colors.grey;
-  static const Color textOnAccent = white;
+  // Text Colors - COLOR HIERARCHY: Content neutral, UI branded.
+  static Color get textPrimary => navyText;
+  static Color get textSecondary => navyText;
+  static Color get textTertiary => navyText;
+  static const Color textDisabled = SojornColors.textDisabled;
+  static const Color textOnAccent = SojornColors.textOnAccent;
   static Color get border => egyptianBlue;
 
-  // Post Content - Neutral for contrast with purple UI
-  static const Color postContent = Color(0xFF1A1A1A);
-  static const Color postContentLight = Color(0xFF4A4A4A);
+  // Post Content - Neutral for contrast with purple UI.
+  static const Color postContent = SojornColors.postContent;
+  static const Color postContentLight = SojornColors.postContentLight;
 
-  // STRICT SEPARATION
-  static const double borderWidth = 1.5;
-  static const double dividerThickness = 2.0;
-  static const double flowLineWidth = 3.0;
+  // Lines
+  static const double borderWidth = SojornLines.border;
+  static const double dividerThickness = SojornLines.dividerStrong;
+  static const double flowLineWidth = SojornLines.flow;
 
   // Post Specific Spacing
-  static const double spacingPostShort = 16.0;
-  static const double spacingPostMedium = 24.0;
-  static const double spacingPostLong = 32.0;
+  static const double spacingPostShort = SojornSpacing.postShort;
+  static const double spacingPostMedium = SojornSpacing.postMedium;
+  static const double spacingPostLong = SojornSpacing.postLong;
 
-  // ============================================================================
-  // TYPOGRAPHY (Literata + Navy Blue) - STRICT FLAT DESIGN
-  // ============================================================================
-
-  static TextTheme get textTheme => GoogleFonts.literataTextTheme().copyWith(
-    // Hero Body Text - Main post content (NEUTRAL for contrast with purple UI)
-    bodyLarge: GoogleFonts.literata(
-      fontSize: 17,
-      height: 1.5,
-      fontWeight: FontWeight.w400,
-      color: postContent,
-    ),
-    // Standard Body - Secondary content (NEUTRAL)
-    bodyMedium: GoogleFonts.literata(
-      fontSize: 16,
-      height: 1.5,
-      fontWeight: FontWeight.w400,
-      color: postContentLight,
-    ),
-    // Metadata / UI Elements (Sans-serif)
-    labelSmall: GoogleFonts.inter(
-      fontSize: 13,
-      fontWeight: FontWeight.w600,
-      color: egyptianBlue,
-      letterSpacing: 0.2,
-    ),
-    labelMedium: GoogleFonts.inter(
-      fontSize: 14,
-      fontWeight: FontWeight.w600,
-      color: brightNavy,
-      letterSpacing: 0,
-    ),
-    // Author Name - Visual anchor, ExtraBold Navy Blue
-    labelLarge: GoogleFonts.inter(
-      fontSize: 15,
-      fontWeight: FontWeight.w800,
-      color: navyBlue,
-    ),
-    // Headlines
-    headlineSmall: GoogleFonts.literata(
-      fontSize: 22,
-      fontWeight: FontWeight.w700,
-      color: navyBlue,
-      letterSpacing: -0.5,
-    ),
-    headlineMedium: GoogleFonts.literata(
-      fontSize: 26,
-      fontWeight: FontWeight.w700,
-      color: navyBlue,
-      letterSpacing: 0,
-    ),
-  );
+  // Typography
+  static TextTheme get textTheme => _buildTextTheme(_brand);
 
   // Backward Compat Getters
   static TextStyle get postBody => textTheme.bodyLarge!;
@@ -186,7 +94,7 @@ class AppTheme {
   static TextStyle get postBodyLong => textTheme.bodyLarge!.copyWith(fontSize: 18);
   static TextStyle get postBodyReflective => textTheme.bodyLarge!.copyWith(
         fontStyle: FontStyle.italic,
-    color: ksuPurple
+        color: ksuPurple,
       );
 
   // Text Style Getters
@@ -197,118 +105,211 @@ class AppTheme {
   static TextStyle get labelMedium => textTheme.labelMedium!;
   static TextStyle get labelSmall => textTheme.labelSmall!;
 
-  // ============================================================================
-  // THEME DATA
-  // ============================================================================
+  // Theme Data
+  static ThemeData get lightTheme => themeFor(_currentThemeType);
+
+  static ThemeData themeFor(AppThemeType type) {
+    final ext = _extensions[type]!;
+    return _buildTheme(ext);
+  }
+
+  static ThemeData _buildTheme(SojornExt ext) {
+    final brand = ext.brandColors;
+    final lines = ext.flowLines;
+    final textTheme = _buildTextTheme(brand);
 
-  static ThemeData get lightTheme {
     return ThemeData(
       useMaterial3: true,
       brightness: Brightness.light,
-      scaffoldBackgroundColor: scaffoldBg,
-      primaryColor: navyBlue,
-      
-      // Color Scheme
-      colorScheme: ColorScheme.light(
-        primary: navyBlue,
-        secondary: brightNavy,
-        tertiary: royalPurple,
-        surface: cardSurface,
-        onSurface: navyText,
-        error: error,
-      ),
-
-      // Text Theme
+      scaffoldBackgroundColor: brand.scaffoldBg,
+      primaryColor: brand.navyBlue,
+      colorScheme: _buildColorScheme(brand),
       textTheme: textTheme,
       fontFamily: GoogleFonts.literata().fontFamily,
+      appBarTheme: _buildAppBarTheme(brand, textTheme, lines),
+      cardTheme: _buildCardTheme(brand, lines),
+      elevatedButtonTheme: _buildElevatedButtonTheme(brand),
+      textButtonTheme: _buildTextButtonTheme(brand),
+      bottomNavigationBarTheme: _buildBottomNavTheme(brand, ext.options),
+      floatingActionButtonTheme: _buildFabTheme(brand, ext.options),
+      dividerTheme: _buildDividerTheme(brand, lines),
+      inputDecorationTheme: _buildInputTheme(brand, lines),
+      extensions: <ThemeExtension<dynamic>>[ext],
+    );
+  }
 
-      // AppBar (High Contrast)
-      appBarTheme: AppBarTheme(
-        backgroundColor: cardSurface,
+  static TextTheme _buildTextTheme(SojornBrandColors brand) {
+    return GoogleFonts.literataTextTheme().copyWith(
+      bodyLarge: GoogleFonts.literata(
+        fontSize: 17,
+        height: 1.5,
+        fontWeight: FontWeight.w400,
+        color: SojornColors.postContent,
+      ),
+      bodyMedium: GoogleFonts.literata(
+        fontSize: 16,
+        height: 1.5,
+        fontWeight: FontWeight.w400,
+        color: SojornColors.postContentLight,
+      ),
+      labelSmall: GoogleFonts.inter(
+        fontSize: 13,
+        fontWeight: FontWeight.w600,
+        color: brand.egyptianBlue,
+        letterSpacing: 0.2,
+      ),
+      labelMedium: GoogleFonts.inter(
+        fontSize: 14,
+        fontWeight: FontWeight.w600,
+        color: brand.brightNavy,
+        letterSpacing: 0,
+      ),
+      labelLarge: GoogleFonts.inter(
+        fontSize: 15,
+        fontWeight: FontWeight.w800,
+        color: brand.navyBlue,
+      ),
+      headlineSmall: GoogleFonts.literata(
+        fontSize: 22,
+        fontWeight: FontWeight.w700,
+        color: brand.navyBlue,
+        letterSpacing: -0.5,
+      ),
+      headlineMedium: GoogleFonts.literata(
+        fontSize: 26,
+        fontWeight: FontWeight.w700,
+        color: brand.navyBlue,
+        letterSpacing: 0,
+      ),
+    );
+  }
+
+  static ColorScheme _buildColorScheme(SojornBrandColors brand) {
+    return ColorScheme.light(
+      primary: brand.navyBlue,
+      secondary: brand.brightNavy,
+      tertiary: brand.royalPurple,
+      surface: brand.cardSurface,
+      onSurface: brand.navyText,
+      error: SojornColors.error,
+    );
+  }
+
+  static AppBarTheme _buildAppBarTheme(
+    SojornBrandColors brand,
+    TextTheme textTheme,
+    SojornFlowLines lines,
+  ) {
+    return AppBarTheme(
+      backgroundColor: brand.cardSurface,
       surfaceTintColor: Colors.transparent,
       elevation: 0,
       centerTitle: false,
-        iconTheme: IconThemeData(color: navyBlue),
+      iconTheme: IconThemeData(color: brand.navyBlue),
       titleTextStyle: textTheme.headlineSmall,
       systemOverlayStyle: SystemUiOverlayStyle.dark,
       shape: Border(
-          bottom: BorderSide(color: egyptianBlue, width: isPop ? 2 : borderWidth),
-        ),
+        bottom: BorderSide(color: brand.egyptianBlue, width: lines.appBarBorder),
       ),
+    );
+  }
 
-      // Card Theme (Defined Edges)
-      cardTheme: CardThemeData(
-        color: cardSurface,
+  static CardThemeData _buildCardTheme(SojornBrandColors brand, SojornFlowLines lines) {
+    return CardThemeData(
+      color: brand.cardSurface,
       elevation: 0,
       margin: EdgeInsets.zero,
       shape: RoundedRectangleBorder(
-          borderRadius: BorderRadius.circular(12),
-          side: BorderSide(color: egyptianBlue, width: 1),
-        ),
+        borderRadius: BorderRadius.circular(SojornRadii.lg),
+        side: BorderSide(color: brand.egyptianBlue, width: lines.cardBorder),
       ),
+    );
+  }
 
-      // Buttons
-      elevatedButtonTheme: ElevatedButtonThemeData(
+  static ElevatedButtonThemeData _buildElevatedButtonTheme(SojornBrandColors brand) {
+    return ElevatedButtonThemeData(
       style: ElevatedButton.styleFrom(
-          backgroundColor: brightNavy,
-          foregroundColor: white,
+        backgroundColor: brand.brightNavy,
+        foregroundColor: SojornColors.textOnAccent,
         elevation: 0,
-          padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 16),
-          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
+        padding: const EdgeInsets.symmetric(
+          horizontal: SojornSpacing.lg,
+          vertical: SojornSpacing.md,
+        ),
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(SojornRadii.md),
+        ),
         textStyle: GoogleFonts.inter(fontWeight: FontWeight.bold),
       ),
-      ),
+    );
+  }
 
-      textButtonTheme: TextButtonThemeData(
+  static TextButtonThemeData _buildTextButtonTheme(SojornBrandColors brand) {
+    return TextButtonThemeData(
       style: TextButton.styleFrom(
-          foregroundColor: egyptianBlue,
+        foregroundColor: brand.egyptianBlue,
         textStyle: GoogleFonts.inter(fontWeight: FontWeight.w600),
       ),
-      ),
+    );
+  }
 
-      // Bottom Nav
-      bottomNavigationBarTheme: BottomNavigationBarThemeData(
-        backgroundColor: cardSurface,
-        selectedItemColor: royalPurple,
-        unselectedItemColor: const Color(0xFF9EA3B0),
+  static BottomNavigationBarThemeData _buildBottomNavTheme(
+    SojornBrandColors brand,
+    SojornThemeOptions options,
+  ) {
+    return BottomNavigationBarThemeData(
+      backgroundColor: brand.cardSurface,
+      selectedItemColor: brand.royalPurple,
+      unselectedItemColor: SojornColors.bottomNavUnselected,
       type: BottomNavigationBarType.fixed,
-        showSelectedLabels: !isPop,
-        showUnselectedLabels: !isPop,
-        elevation: isPop ? 10 : 0,
-      ),
+      showSelectedLabels: options.showBottomNavLabels,
+      showUnselectedLabels: options.showBottomNavLabels,
+      elevation: options.bottomNavElevation,
+    );
+  }
 
-      // Floating Action Button
-      floatingActionButtonTheme: FloatingActionButtonThemeData(
-        backgroundColor: brightNavy,
-        foregroundColor: Colors.white,
-        elevation: isPop ? 4 : 6,
-        shape: isPop ? const CircleBorder() : null,
-      ),
+  static FloatingActionButtonThemeData _buildFabTheme(
+    SojornBrandColors brand,
+    SojornThemeOptions options,
+  ) {
+    return FloatingActionButtonThemeData(
+      backgroundColor: brand.brightNavy,
+      foregroundColor: SojornColors.textOnAccent,
+      elevation: options.fabElevation,
+      shape: options.fabShape,
+    );
+  }
 
-      // Divider (Hard & Visible)
-      dividerTheme: DividerThemeData(
-        color: queenPink,
-        thickness: 1,
-        space: 24, 
-      ),
+  static DividerThemeData _buildDividerTheme(
+    SojornBrandColors brand,
+    SojornFlowLines lines,
+  ) {
+    return DividerThemeData(
+      color: brand.queenPink,
+      thickness: lines.divider,
+      space: SojornSpacing.lg,
+    );
+  }
 
-      // Input Fields
-      inputDecorationTheme: InputDecorationTheme(
+  static InputDecorationTheme _buildInputTheme(
+    SojornBrandColors brand,
+    SojornFlowLines lines,
+  ) {
+    return InputDecorationTheme(
       filled: true,
-        fillColor: cardSurface,
-        contentPadding: const EdgeInsets.all(16),
+      fillColor: brand.cardSurface,
+      contentPadding: const EdgeInsets.all(SojornSpacing.md),
       border: OutlineInputBorder(
-          borderRadius: BorderRadius.circular(8),
-          borderSide: BorderSide(color: egyptianBlue, width: 1),
+        borderRadius: BorderRadius.circular(SojornRadii.md),
+        borderSide: BorderSide(color: brand.egyptianBlue, width: lines.inputBorder),
       ),
       enabledBorder: OutlineInputBorder(
-          borderRadius: BorderRadius.circular(8),
-          borderSide: BorderSide(color: egyptianBlue, width: 1),
+        borderRadius: BorderRadius.circular(SojornRadii.md),
+        borderSide: BorderSide(color: brand.egyptianBlue, width: lines.inputBorder),
       ),
       focusedBorder: OutlineInputBorder(
-          borderRadius: BorderRadius.circular(8),
-          borderSide: BorderSide(color: royalPurple, width: 2),
-        ),
+        borderRadius: BorderRadius.circular(SojornRadii.md),
+        borderSide: BorderSide(color: brand.royalPurple, width: lines.inputFocusBorder),
       ),
     );
   }

sojorn_app/lib/theme/sojorn_feed_palette.dart

@@ -1,5 +1,8 @@
 import 'package:flutter/material.dart';
 
+import 'theme_extensions.dart';
+
+@Deprecated('Use Theme.of(context).extension<SojornExt>()!.feedPalettes instead.')
 class sojornFeedPalette {
   final Color backgroundTop;
   final Color backgroundBottom;
@@ -17,51 +20,30 @@ class sojornFeedPalette {
     required this.accentColor,
   });
 
-  static const List<sojornFeedPalette> presets = [
-    sojornFeedPalette(
-      backgroundTop: Color(0xFF0B1023),
-      backgroundBottom: Color(0xFF1B2340),
-      panelColor: Color(0xFF0E1328),
-      textColor: Color(0xFFF8FAFF),
-      subTextColor: Color(0xFFB9C3E6),
-      accentColor: Color(0xFF70A7FF),
+  static const SojornFeedPalettes _palettes = SojornFeedPalettes.defaultPresets;
+
+  static final List<sojornFeedPalette> presets = List<sojornFeedPalette>.unmodifiable(
+    _palettes.presets.map(
+      (palette) => sojornFeedPalette(
+        backgroundTop: palette.backgroundTop,
+        backgroundBottom: palette.backgroundBottom,
+        panelColor: palette.panelColor,
+        textColor: palette.textColor,
+        subTextColor: palette.subTextColor,
+        accentColor: palette.accentColor,
       ),
-    sojornFeedPalette(
-      backgroundTop: Color(0xFF0E1A16),
-      backgroundBottom: Color(0xFF1E3A2D),
-      panelColor: Color(0xFF12261F),
-      textColor: Color(0xFFF5FFF8),
-      subTextColor: Color(0xFFB7D7C6),
-      accentColor: Color(0xFF5FD7A1),
     ),
-    sojornFeedPalette(
-      backgroundTop: Color(0xFF1B0E16),
-      backgroundBottom: Color(0xFF3A1B2B),
-      panelColor: Color(0xFF24101A),
-      textColor: Color(0xFFFFF6F9),
-      subTextColor: Color(0xFFE0B9C6),
-      accentColor: Color(0xFFF28FB3),
-    ),
-    sojornFeedPalette(
-      backgroundTop: Color(0xFF0B1720),
-      backgroundBottom: Color(0xFF193547),
-      panelColor: Color(0xFF10212D),
-      textColor: Color(0xFFEFF7FF),
-      subTextColor: Color(0xFFAFC6D9),
-      accentColor: Color(0xFF6FD3FF),
-    ),
-    sojornFeedPalette(
-      backgroundTop: Color(0xFF201A12),
-      backgroundBottom: Color(0xFF3A2C1B),
-      panelColor: Color(0xFF221B13),
-      textColor: Color(0xFFFFF7ED),
-      subTextColor: Color(0xFFD9C8AE),
-      accentColor: Color(0xFFFFC074),
-    ),
-  ];
+  );
 
   static sojornFeedPalette forId(String id) {
-    final index = id.hashCode.abs() % presets.length;
-    return presets[index];
+    final palette = _palettes.forId(id);
+    return sojornFeedPalette(
+      backgroundTop: palette.backgroundTop,
+      backgroundBottom: palette.backgroundBottom,
+      panelColor: palette.panelColor,
+      textColor: palette.textColor,
+      subTextColor: palette.subTextColor,
+      accentColor: palette.accentColor,
+    );
   }
 }

sojorn_app/lib/theme/theme_extensions.dart

@@ -0,0 +1,341 @@
+import 'dart:ui' show lerpDouble;
+
+import 'package:flutter/material.dart';
+
+import 'tokens.dart';
+
+@immutable
+class SojornBrandColors {
+  final Color navyBlue;
+  final Color navyText;
+  final Color egyptianBlue;
+  final Color brightNavy;
+  final Color royalPurple;
+  final Color ksuPurple;
+  final Color queenPink;
+  final Color queenPinkLight;
+  final Color scaffoldBg;
+  final Color cardSurface;
+
+  const SojornBrandColors({
+    required this.navyBlue,
+    required this.navyText,
+    required this.egyptianBlue,
+    required this.brightNavy,
+    required this.royalPurple,
+    required this.ksuPurple,
+    required this.queenPink,
+    required this.queenPinkLight,
+    required this.scaffoldBg,
+    required this.cardSurface,
+  });
+
+  SojornBrandColors lerp(SojornBrandColors other, double t) {
+    return SojornBrandColors(
+      navyBlue: Color.lerp(navyBlue, other.navyBlue, t)!,
+      navyText: Color.lerp(navyText, other.navyText, t)!,
+      egyptianBlue: Color.lerp(egyptianBlue, other.egyptianBlue, t)!,
+      brightNavy: Color.lerp(brightNavy, other.brightNavy, t)!,
+      royalPurple: Color.lerp(royalPurple, other.royalPurple, t)!,
+      ksuPurple: Color.lerp(ksuPurple, other.ksuPurple, t)!,
+      queenPink: Color.lerp(queenPink, other.queenPink, t)!,
+      queenPinkLight: Color.lerp(queenPinkLight, other.queenPinkLight, t)!,
+      scaffoldBg: Color.lerp(scaffoldBg, other.scaffoldBg, t)!,
+      cardSurface: Color.lerp(cardSurface, other.cardSurface, t)!,
+    );
+  }
+}
+
+@immutable
+class SojornTrustTierColors {
+  final Color established;
+  final Color trusted;
+  final Color fresh;
+
+  const SojornTrustTierColors({
+    required this.established,
+    required this.trusted,
+    required this.fresh,
+  });
+
+  SojornTrustTierColors lerp(SojornTrustTierColors other, double t) {
+    return SojornTrustTierColors(
+      established: Color.lerp(established, other.established, t)!,
+      trusted: Color.lerp(trusted, other.trusted, t)!,
+      fresh: Color.lerp(fresh, other.fresh, t)!,
+    );
+  }
+}
+
+@immutable
+class SojornFlowLines {
+  final double appBarBorder;
+  final double cardBorder;
+  final double inputBorder;
+  final double inputFocusBorder;
+  final double divider;
+  final double flow;
+
+  const SojornFlowLines({
+    required this.appBarBorder,
+    required this.cardBorder,
+    required this.inputBorder,
+    required this.inputFocusBorder,
+    required this.divider,
+    required this.flow,
+  });
+
+  SojornFlowLines lerp(SojornFlowLines other, double t) {
+    return SojornFlowLines(
+      appBarBorder: lerpDouble(appBarBorder, other.appBarBorder, t)!,
+      cardBorder: lerpDouble(cardBorder, other.cardBorder, t)!,
+      inputBorder: lerpDouble(inputBorder, other.inputBorder, t)!,
+      inputFocusBorder: lerpDouble(inputFocusBorder, other.inputFocusBorder, t)!,
+      divider: lerpDouble(divider, other.divider, t)!,
+      flow: lerpDouble(flow, other.flow, t)!,
+    );
+  }
+}
+
+@immutable
+class SojornThemeOptions {
+  final bool showBottomNavLabels;
+  final double bottomNavElevation;
+  final double fabElevation;
+  final ShapeBorder? fabShape;
+
+  const SojornThemeOptions({
+    required this.showBottomNavLabels,
+    required this.bottomNavElevation,
+    required this.fabElevation,
+    required this.fabShape,
+  });
+
+  SojornThemeOptions lerp(SojornThemeOptions other, double t) {
+    return SojornThemeOptions(
+      showBottomNavLabels: t < 0.5 ? showBottomNavLabels : other.showBottomNavLabels,
+      bottomNavElevation: lerpDouble(bottomNavElevation, other.bottomNavElevation, t)!,
+      fabElevation: lerpDouble(fabElevation, other.fabElevation, t)!,
+      fabShape: ShapeBorder.lerp(fabShape, other.fabShape, t),
+    );
+  }
+}
+
+@immutable
+class SojornFeedPalette {
+  final Color backgroundTop;
+  final Color backgroundBottom;
+  final Color panelColor;
+  final Color textColor;
+  final Color subTextColor;
+  final Color accentColor;
+
+  const SojornFeedPalette({
+    required this.backgroundTop,
+    required this.backgroundBottom,
+    required this.panelColor,
+    required this.textColor,
+    required this.subTextColor,
+    required this.accentColor,
+  });
+
+  SojornFeedPalette lerp(SojornFeedPalette other, double t) {
+    return SojornFeedPalette(
+      backgroundTop: Color.lerp(backgroundTop, other.backgroundTop, t)!,
+      backgroundBottom: Color.lerp(backgroundBottom, other.backgroundBottom, t)!,
+      panelColor: Color.lerp(panelColor, other.panelColor, t)!,
+      textColor: Color.lerp(textColor, other.textColor, t)!,
+      subTextColor: Color.lerp(subTextColor, other.subTextColor, t)!,
+      accentColor: Color.lerp(accentColor, other.accentColor, t)!,
+    );
+  }
+}
+
+@immutable
+class SojornFeedPalettes {
+  final List<SojornFeedPalette> presets;
+
+  const SojornFeedPalettes({required this.presets});
+
+  static const SojornFeedPalettes defaultPresets = SojornFeedPalettes(
+    presets: [
+      SojornFeedPalette(
+        backgroundTop: SojornColors.feedNavyTop,
+        backgroundBottom: SojornColors.feedNavyBottom,
+        panelColor: SojornColors.feedNavyPanel,
+        textColor: SojornColors.feedNavyText,
+        subTextColor: SojornColors.feedNavySubText,
+        accentColor: SojornColors.feedNavyAccent,
+      ),
+      SojornFeedPalette(
+        backgroundTop: SojornColors.feedForestTop,
+        backgroundBottom: SojornColors.feedForestBottom,
+        panelColor: SojornColors.feedForestPanel,
+        textColor: SojornColors.feedForestText,
+        subTextColor: SojornColors.feedForestSubText,
+        accentColor: SojornColors.feedForestAccent,
+      ),
+      SojornFeedPalette(
+        backgroundTop: SojornColors.feedRoseTop,
+        backgroundBottom: SojornColors.feedRoseBottom,
+        panelColor: SojornColors.feedRosePanel,
+        textColor: SojornColors.feedRoseText,
+        subTextColor: SojornColors.feedRoseSubText,
+        accentColor: SojornColors.feedRoseAccent,
+      ),
+      SojornFeedPalette(
+        backgroundTop: SojornColors.feedSkyTop,
+        backgroundBottom: SojornColors.feedSkyBottom,
+        panelColor: SojornColors.feedSkyPanel,
+        textColor: SojornColors.feedSkyText,
+        subTextColor: SojornColors.feedSkySubText,
+        accentColor: SojornColors.feedSkyAccent,
+      ),
+      SojornFeedPalette(
+        backgroundTop: SojornColors.feedAmberTop,
+        backgroundBottom: SojornColors.feedAmberBottom,
+        panelColor: SojornColors.feedAmberPanel,
+        textColor: SojornColors.feedAmberText,
+        subTextColor: SojornColors.feedAmberSubText,
+        accentColor: SojornColors.feedAmberAccent,
+      ),
+    ],
+  );
+
+  SojornFeedPalette forId(String id) {
+    final index = id.hashCode.abs() % presets.length;
+    return presets[index];
+  }
+
+  SojornFeedPalettes lerp(SojornFeedPalettes other, double t) {
+    if (presets.length != other.presets.length) {
+      return t < 0.5 ? this : other;
+    }
+
+    return SojornFeedPalettes(
+      presets: List<SojornFeedPalette>.generate(
+        presets.length,
+        (index) => presets[index].lerp(other.presets[index], t),
+      ),
+    );
+  }
+}
+
+@immutable
+class SojornExt extends ThemeExtension<SojornExt> {
+  final SojornBrandColors brandColors;
+  final SojornTrustTierColors trustTierColors;
+  final SojornFlowLines flowLines;
+  final SojornFeedPalettes feedPalettes;
+  final SojornThemeOptions options;
+
+  const SojornExt({
+    required this.brandColors,
+    required this.trustTierColors,
+    required this.flowLines,
+    required this.feedPalettes,
+    required this.options,
+  });
+
+  static const SojornExt basic = SojornExt(
+    brandColors: SojornBrandColors(
+      navyBlue: SojornColors.basicNavyBlue,
+      navyText: SojornColors.basicNavyText,
+      egyptianBlue: SojornColors.basicEgyptianBlue,
+      brightNavy: SojornColors.basicBrightNavy,
+      royalPurple: SojornColors.basicRoyalPurple,
+      ksuPurple: SojornColors.basicKsuPurple,
+      queenPink: SojornColors.basicQueenPink,
+      queenPinkLight: SojornColors.basicQueenPinkLight,
+      scaffoldBg: SojornColors.basicQueenPinkLight,
+      cardSurface: SojornColors.basicWhite,
+    ),
+    trustTierColors: SojornTrustTierColors(
+      established: SojornColors.basicEgyptianBlue,
+      trusted: SojornColors.basicRoyalPurple,
+      fresh: SojornColors.tierNew,
+    ),
+    flowLines: SojornFlowLines(
+      appBarBorder: SojornLines.border,
+      cardBorder: SojornLines.borderThin,
+      inputBorder: SojornLines.borderThin,
+      inputFocusBorder: SojornLines.borderStrong,
+      divider: SojornLines.divider,
+      flow: SojornLines.flow,
+    ),
+    feedPalettes: SojornFeedPalettes.defaultPresets,
+    options: SojornThemeOptions(
+      showBottomNavLabels: true,
+      bottomNavElevation: 0,
+      fabElevation: 6,
+      fabShape: null,
+    ),
+  );
+
+  static const SojornExt pop = SojornExt(
+    brandColors: SojornBrandColors(
+      navyBlue: SojornColors.popNavyBlue,
+      navyText: SojornColors.popNavyText,
+      egyptianBlue: SojornColors.popEgyptianBlue,
+      brightNavy: SojornColors.popBrightNavy,
+      royalPurple: SojornColors.popRoyalPurple,
+      ksuPurple: SojornColors.popKsuPurple,
+      queenPink: SojornColors.popHighlight,
+      queenPinkLight: SojornColors.popScaffoldBg,
+      scaffoldBg: SojornColors.popScaffoldBg,
+      cardSurface: SojornColors.popCardSurface,
+    ),
+    trustTierColors: SojornTrustTierColors(
+      established: SojornColors.popEgyptianBlue,
+      trusted: SojornColors.popRoyalPurple,
+      fresh: SojornColors.tierNew,
+    ),
+    flowLines: SojornFlowLines(
+      appBarBorder: SojornLines.borderStrong,
+      cardBorder: SojornLines.borderThin,
+      inputBorder: SojornLines.borderThin,
+      inputFocusBorder: SojornLines.borderStrong,
+      divider: SojornLines.divider,
+      flow: SojornLines.flow,
+    ),
+    feedPalettes: SojornFeedPalettes.defaultPresets,
+    options: SojornThemeOptions(
+      showBottomNavLabels: false,
+      bottomNavElevation: 10,
+      fabElevation: 4,
+      fabShape: const CircleBorder(),
+    ),
+  );
+
+  @override
+  SojornExt copyWith({
+    SojornBrandColors? brandColors,
+    SojornTrustTierColors? trustTierColors,
+    SojornFlowLines? flowLines,
+    SojornFeedPalettes? feedPalettes,
+    SojornThemeOptions? options,
+  }) {
+    return SojornExt(
+      brandColors: brandColors ?? this.brandColors,
+      trustTierColors: trustTierColors ?? this.trustTierColors,
+      flowLines: flowLines ?? this.flowLines,
+      feedPalettes: feedPalettes ?? this.feedPalettes,
+      options: options ?? this.options,
+    );
+  }
+
+  @override
+  SojornExt lerp(ThemeExtension<SojornExt>? other, double t) {
+    if (other is! SojornExt) {
+      return this;
+    }
+
+    return SojornExt(
+      brandColors: brandColors.lerp(other.brandColors, t),
+      trustTierColors: trustTierColors.lerp(other.trustTierColors, t),
+      flowLines: flowLines.lerp(other.flowLines, t),
+      feedPalettes: feedPalettes.lerp(other.feedPalettes, t),
+      options: options.lerp(other.options, t),
+    );
+  }
+}

sojorn_app/lib/theme/tokens.dart

@@ -0,0 +1,111 @@
+import 'package:flutter/material.dart';
+
+class SojornColors {
+  const SojornColors._();
+
+  // Basic theme palette.
+  static const Color basicNavyBlue = Color(0xFF000383);
+  static const Color basicNavyText = Color(0xFF000383);
+  static const Color basicEgyptianBlue = Color(0xFF0E38AE);
+  static const Color basicBrightNavy = Color(0xFF1974D1);
+  static const Color basicRoyalPurple = Color(0xFF7751A8);
+  static const Color basicKsuPurple = Color(0xFF512889);
+  static const Color basicQueenPink = Color(0xFFE5C0DD);
+  static const Color basicQueenPinkLight = Color(0xFFF9F2F7);
+  static const Color basicWhite = Color(0xFFFFFFFF);
+
+  // Pop theme palette.
+  static const Color popNavyBlue = Color(0xFF000383);
+  static const Color popNavyText = Color(0xFF0D1050);
+  static const Color popEgyptianBlue = Color(0xFF0E38AE);
+  static const Color popBrightNavy = Color(0xFF1974D1);
+  static const Color popRoyalPurple = Color(0xFF7751A8);
+  static const Color popKsuPurple = Color(0xFF512889);
+  static const Color popScaffoldBg = Color(0xFFF9F6F9);
+  static const Color popCardSurface = Color(0xFFFFFFFF);
+  static const Color popHighlight = Color(0xFFE5C0DD);
+
+  // Semantic colors.
+  static const Color error = Color(0xFFD32F2F);
+  static const Color warning = Color(0xFFFBC02D);
+  static const Color info = Color(0xFF2196F3);
+  static const Color textDisabled = Color(0xFF9E9E9E);
+  static const Color textOnAccent = Color(0xFFFFFFFF);
+
+  static const Color postContent = Color(0xFF1A1A1A);
+  static const Color postContentLight = Color(0xFF4A4A4A);
+  static const Color bottomNavUnselected = Color(0xFF9EA3B0);
+  static const Color tierNew = Color(0xFF9E9E9E);
+
+  // Feed palettes.
+  static const Color feedNavyTop = Color(0xFF0B1023);
+  static const Color feedNavyBottom = Color(0xFF1B2340);
+  static const Color feedNavyPanel = Color(0xFF0E1328);
+  static const Color feedNavyText = Color(0xFFF8FAFF);
+  static const Color feedNavySubText = Color(0xFFB9C3E6);
+  static const Color feedNavyAccent = Color(0xFF70A7FF);
+
+  static const Color feedForestTop = Color(0xFF0E1A16);
+  static const Color feedForestBottom = Color(0xFF1E3A2D);
+  static const Color feedForestPanel = Color(0xFF12261F);
+  static const Color feedForestText = Color(0xFFF5FFF8);
+  static const Color feedForestSubText = Color(0xFFB7D7C6);
+  static const Color feedForestAccent = Color(0xFF5FD7A1);
+
+  static const Color feedRoseTop = Color(0xFF1B0E16);
+  static const Color feedRoseBottom = Color(0xFF3A1B2B);
+  static const Color feedRosePanel = Color(0xFF24101A);
+  static const Color feedRoseText = Color(0xFFFFF6F9);
+  static const Color feedRoseSubText = Color(0xFFE0B9C6);
+  static const Color feedRoseAccent = Color(0xFFF28FB3);
+
+  static const Color feedSkyTop = Color(0xFF0B1720);
+  static const Color feedSkyBottom = Color(0xFF193547);
+  static const Color feedSkyPanel = Color(0xFF10212D);
+  static const Color feedSkyText = Color(0xFFEFF7FF);
+  static const Color feedSkySubText = Color(0xFFAFC6D9);
+  static const Color feedSkyAccent = Color(0xFF6FD3FF);
+
+  static const Color feedAmberTop = Color(0xFF201A12);
+  static const Color feedAmberBottom = Color(0xFF3A2C1B);
+  static const Color feedAmberPanel = Color(0xFF221B13);
+  static const Color feedAmberText = Color(0xFFFFF7ED);
+  static const Color feedAmberSubText = Color(0xFFD9C8AE);
+  static const Color feedAmberAccent = Color(0xFFFFC074);
+}
+
+class SojornSpacing {
+  const SojornSpacing._();
+
+  static const double xxs = 2.0;
+  static const double xs = 4.0;
+  static const double sm = 12.0;
+  static const double md = 16.0;
+  static const double lg = 24.0;
+  static const double xl = 32.0;
+
+  static const double postShort = 16.0;
+  static const double postMedium = 24.0;
+  static const double postLong = 32.0;
+}
+
+class SojornRadii {
+  const SojornRadii._();
+
+  static const double xs = 2.0;
+  static const double sm = 4.0;
+  static const double md = 8.0;
+  static const double lg = 12.0;
+  static const double full = 36.0;
+}
+
+class SojornLines {
+  const SojornLines._();
+
+  static const double borderThin = 1.0;
+  static const double border = 1.5;
+  static const double borderStrong = 2.0;
+  static const double divider = 1.0;
+  static const double dividerStrong = 2.0;
+  static const double flow = 3.0;
+}

sojorn_app/lib/widgets/compose_and_chat_fab.dart

@@ -26,7 +26,7 @@ class ComposeAndChatFab extends StatelessWidget {
             heroTag: chatHeroTag,
             tooltip: 'Messages',
             onPressed: () {
-              Navigator.of(context).push(
+              Navigator.of(context, rootNavigator: true).push(
                 MaterialPageRoute(
                   builder: (_) => const SecureChatFullScreen(),
                   fullscreenDialog: true,

sojorn_app/lib/widgets/media/signed_media_image.dart

@@ -52,6 +52,7 @@ class _SignedMediaImageState extends ConsumerState<SignedMediaImage> {
 
     if (_shouldSign) {
       WidgetsBinding.instance.addPostFrameCallback((_) {
+        if (!mounted) return;
         _refreshSignedUrl();
       });
     }
@@ -91,13 +92,16 @@ class _SignedMediaImageState extends ConsumerState<SignedMediaImage> {
   }
 
   Future<void> _refreshSignedUrl() async {
+    if (!mounted) return;
     if (_refreshing || _hasRefreshed) return;
     setState(() {
       _refreshing = true;
     });
 
     try {
-      final apiService = ref.read(apiServiceProvider);
+      final apiService =
+          ProviderScope.containerOf(context, listen: false)
+              .read(apiServiceProvider);
       final signedUrl = await apiService.getSignedMediaUrl(widget.url);
       if (!mounted) return;
       if (signedUrl != null && signedUrl.isNotEmpty) {
@@ -147,6 +151,7 @@ class _SignedMediaImageState extends ConsumerState<SignedMediaImage> {
       errorBuilder: (context, error, stackTrace) {
         if (_shouldSign && !_refreshing && !_hasRefreshed) {
           WidgetsBinding.instance.addPostFrameCallback((_) {
+            if (!mounted) return;
             _refreshSignedUrl();
           });
           return _buildLoading(context);

sojorn_app/lib/widgets/post/interactive_reply_block.dart

@@ -0,0 +1,560 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_animate/flutter_animate.dart';
+import 'package:google_fonts/google_fonts.dart';
+import '../../models/post.dart';
+import '../../theme/app_theme.dart';
+import '../media/signed_media_image.dart';
+
+enum BlockState {
+  idle, // Preview mode - minimal display
+  active, // Inspector mode - expanded with full details
+}
+
+/// InteractiveReplyBlock - A 2-stage interactive widget for reply posts
+/// Stage 1 (Idle/Preview): Minimalist block with avatar + truncated preview
+/// Stage 2 (Active/Inspector): Expanded block with full content and actions
+class InteractiveReplyBlock extends StatefulWidget {
+  final Post post;
+  final VoidCallback? onTap;
+  final BlockState initialState;
+  final bool isSelected;
+  final bool compactPreview;
+  final Widget? reactionStrip;
+  final bool? isLikedOverride;
+  final VoidCallback? onToggleLike;
+
+  const InteractiveReplyBlock({
+    super.key,
+    required this.post,
+    this.onTap,
+    this.initialState = BlockState.idle,
+    this.isSelected = false,
+    this.compactPreview = false,
+    this.reactionStrip,
+    this.isLikedOverride,
+    this.onToggleLike,
+  });
+
+  @override
+  State<InteractiveReplyBlock> createState() => _InteractiveReplyBlockState();
+}
+
+class _InteractiveReplyBlockState extends State<InteractiveReplyBlock>
+    with TickerProviderStateMixin {
+  late BlockState _currentState;
+  late AnimationController _expandController;
+  late AnimationController _bounceController;
+  late Animation<double> _expandAnimation;
+  late Animation<double> _bounceAnimation;
+
+  static const Duration _expandDuration = Duration(milliseconds: 400);
+  static const Duration _bounceDuration = Duration(milliseconds: 600);
+
+  @override
+  void initState() {
+    super.initState();
+    _currentState = widget.initialState;
+    _initializeAnimations();
+  }
+
+  void _initializeAnimations() {
+    _expandController = AnimationController(
+      duration: _expandDuration,
+      vsync: this,
+    );
+
+    _bounceController = AnimationController(
+      duration: _bounceDuration,
+      vsync: this,
+    );
+
+    _expandAnimation = CurvedAnimation(
+      parent: _expandController,
+      curve: Curves.easeOutBack,
+      reverseCurve: Curves.easeInCubic,
+    );
+
+    _bounceAnimation = Tween<double>(
+      begin: 0.95,
+      end: 1.0,
+    ).animate(CurvedAnimation(
+      parent: _bounceController,
+      curve: Curves.elasticOut,
+    ));
+
+    if (_currentState == BlockState.active) {
+      _expandController.value = 1.0;
+    }
+  }
+
+  @override
+  void dispose() {
+    _expandController.dispose();
+    _bounceController.dispose();
+    super.dispose();
+  }
+
+  void _handleTap() {
+    if (widget.compactPreview) {
+      widget.onTap?.call();
+      return;
+    }
+    if (_currentState == BlockState.idle) {
+      _transitionToActive();
+    } else {
+      widget.onTap?.call();
+    }
+  }
+
+  void _transitionToActive() {
+    setState(() => _currentState = BlockState.active);
+    _expandController.forward();
+    _bounceController.forward(from: 0.0);
+    
+    // Haptic feedback for tactile response
+    // HapticFeedback.mediumImpact(); // Uncomment if haptic feedback is desired
+  }
+
+  void _transitionToIdle() {
+    setState(() => _currentState = BlockState.idle);
+    _expandController.reverse();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final isActive = _currentState == BlockState.active;
+    if (widget.compactPreview && !isActive) {
+      return SizedBox(
+        width: 160,
+        child: Material(
+          color: Colors.transparent,
+          child: InkWell(
+            onTap: _handleTap,
+            borderRadius: BorderRadius.circular(16),
+          child: AnimatedContainer(
+            duration: _expandDuration,
+            curve: Curves.easeOutBack,
+            padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 12),
+            decoration: BoxDecoration(
+                color: AppTheme.cardSurface,
+                borderRadius: BorderRadius.circular(16),
+                border: Border.all(
+                  color: AppTheme.brightNavy,
+                  width: 1.6,
+                ),
+                boxShadow: [
+                  BoxShadow(
+                    color: AppTheme.brightNavy.withValues(alpha: 0.14),
+                    blurRadius: 12,
+                    offset: const Offset(0, 6),
+                  ),
+                ],
+              ),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Row(
+                    children: [
+                      _buildCompactAvatar(),
+                      const SizedBox(width: 8),
+                      Expanded(
+                        child: Text(
+                          widget.post.author?.displayName ?? 'Anonymous',
+                          maxLines: 1,
+                          overflow: TextOverflow.ellipsis,
+                          style: GoogleFonts.inter(
+                            color: AppTheme.textPrimary,
+                            fontSize: 12,
+                            fontWeight: FontWeight.w700,
+                          ),
+                        ),
+                      ),
+                    ],
+                  ),
+                  const SizedBox(height: 8),
+                  Text(
+                    _compactLabel(),
+                    maxLines: 2,
+                    overflow: TextOverflow.ellipsis,
+                    style: GoogleFonts.inter(
+                      color: AppTheme.navyText.withValues(alpha: 0.75),
+                      fontSize: 12,
+                      height: 1.35,
+                      fontWeight: FontWeight.w500,
+                    ),
+                  ),
+                  if (widget.reactionStrip != null) ...[
+                    const SizedBox(height: 10),
+                    widget.reactionStrip!,
+                  ],
+                ],
+              ),
+            ),
+          ),
+        ),
+      );
+    }
+
+    return AnimatedBuilder(
+      animation: Listenable.merge([_expandAnimation, _bounceAnimation]),
+      builder: (context, child) {
+        final scale = _bounceAnimation.value;
+        
+        return Transform.scale(
+          scale: scale,
+          child: AnimatedContainer(
+            duration: _expandDuration,
+            curve: Curves.easeOutBack,
+            margin: EdgeInsets.symmetric(
+              vertical: isActive ? 8.0 : 4.0,
+              horizontal: 16.0,
+            ),
+            padding: EdgeInsets.all(
+              isActive ? 20.0 : 16.0,
+            ),
+            decoration: BoxDecoration(
+              color: widget.isSelected 
+                  ? AppTheme.brightNavy.withValues(alpha: 0.08)
+                  : AppTheme.cardSurface,
+              borderRadius: BorderRadius.circular(
+                isActive ? 24.0 : 18.0,
+              ),
+              border: Border.all(
+                color: widget.isSelected
+                    ? AppTheme.brightNavy
+                    : isActive
+                        ? AppTheme.brightNavy.withValues(alpha: 0.4)
+                        : AppTheme.navyBlue.withValues(alpha: 0.12),
+                width: widget.isSelected ? 2.0 : (isActive ? 1.6 : 1.2),
+              ),
+              boxShadow: [
+                BoxShadow(
+                  color: widget.isSelected
+                      ? AppTheme.brightNavy.withValues(alpha: 0.25)
+                      : AppTheme.navyBlue.withValues(alpha: isActive ? 0.14 : 0.06),
+                  blurRadius: isActive ? 24.0 : 14.0,
+                  offset: const Offset(0, 8),
+                ),
+                if (isActive)
+                  BoxShadow(
+                    color: AppTheme.brightNavy.withValues(alpha: 0.1),
+                    blurRadius: 40,
+                    offset: const Offset(0, 12),
+                  ),
+              ],
+            ),
+            child: Material(
+              color: Colors.transparent,
+              child: InkWell(
+                onTap: _handleTap,
+                borderRadius: BorderRadius.circular(
+                  isActive ? 24.0 : 18.0,
+                ),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    _buildHeader(isActive),
+                    if (isActive) ...[
+                      const SizedBox(height: 12),
+                    _buildFullContent(),
+                    const SizedBox(height: 16),
+                    _buildEngagementStats(),
+                    if (widget.reactionStrip != null) ...[
+                      const SizedBox(height: 12),
+                      widget.reactionStrip!,
+                    ],
+                    const SizedBox(height: 12),
+                    _buildActionButtons(),
+                  ] else ...[
+                    const SizedBox(height: 8),
+                    _buildPreviewContent(),
+                    if (widget.reactionStrip != null) ...[
+                      const SizedBox(height: 10),
+                      widget.reactionStrip!,
+                    ],
+                  ],
+                  ],
+                ),
+              ),
+            ),
+          ),
+        );
+      },
+    ).animate(target: _currentState == BlockState.active ? 1 : 0).fadeIn(
+      duration: 300.ms,
+      curve: Curves.easeOutCubic,
+    );
+  }
+
+  Widget _buildHeader(bool isActive) {
+    return Row(
+      children: [
+        _buildAvatar(isActive),
+        const SizedBox(width: 12),
+        Expanded(
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Text(
+                widget.post.author?.displayName ?? 'Anonymous',
+                style: GoogleFonts.inter(
+                  color: AppTheme.textPrimary,
+                  fontSize: isActive ? 16 : 14,
+                  fontWeight: FontWeight.w700,
+                ),
+              ),
+              if (isActive) ...[
+                const SizedBox(height: 2),
+                Text(
+                  '@${widget.post.author?.handle ?? 'anonymous'}',
+                  style: GoogleFonts.inter(
+                    color: AppTheme.textSecondary,
+                    fontSize: 12,
+                    fontWeight: FontWeight.w500,
+                  ),
+                ),
+              ],
+            ],
+          ),
+        ),
+        if (isActive)
+          Container(
+            padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+            decoration: BoxDecoration(
+              color: AppTheme.egyptianBlue.withValues(alpha: 0.1),
+              borderRadius: BorderRadius.circular(12),
+            ),
+            child: Icon(
+              Icons.expand_more,
+              size: 16,
+              color: AppTheme.egyptianBlue,
+            ),
+          ),
+      ],
+    );
+  }
+
+  Widget _buildAvatar(bool isActive) {
+    final avatarUrl = widget.post.author?.avatarUrl;
+    final hasAvatar = avatarUrl != null && avatarUrl.trim().isNotEmpty;
+    final size = isActive ? 40.0 : 32.0;
+    
+    return Container(
+      width: size,
+      height: size,
+      decoration: BoxDecoration(
+        color: AppTheme.brightNavy.withValues(alpha: 0.1),
+        borderRadius: BorderRadius.circular(isActive ? 14 : 10),
+      ),
+      child: !hasAvatar
+          ? Center(
+              child: Text(
+                _initialForName(widget.post.author?.displayName),
+                style: GoogleFonts.inter(
+                  color: AppTheme.brightNavy,
+                  fontSize: isActive ? 14 : 12,
+                  fontWeight: FontWeight.w700,
+                ),
+              ),
+            )
+          : ClipRRect(
+              borderRadius: BorderRadius.circular(isActive ? 14 : 10),
+              child: SignedMediaImage(
+                url: avatarUrl!,
+                width: size,
+                height: size,
+                fit: BoxFit.cover,
+              ),
+            ),
+    );
+  }
+
+  Widget _buildPreviewContent() {
+    final previewText = _getPreviewText(widget.post.body);
+    
+    return Text(
+      previewText,
+      style: GoogleFonts.inter(
+        color: AppTheme.navyText.withValues(alpha: 0.8),
+        fontSize: 14,
+        height: 1.4,
+        fontWeight: FontWeight.w500,
+      ),
+      maxLines: 2,
+      overflow: TextOverflow.ellipsis,
+    );
+  }
+
+  Widget _buildFullContent() {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Text(
+          widget.post.body,
+          style: GoogleFonts.inter(
+            color: AppTheme.navyText,
+            fontSize: 16,
+            height: 1.6,
+            fontWeight: FontWeight.w500,
+          ),
+        ),
+        if (widget.post.imageUrl != null) ...[
+          const SizedBox(height: 12),
+          ClipRRect(
+            borderRadius: BorderRadius.circular(16),
+            child: SignedMediaImage(
+              url: widget.post.imageUrl!,
+              width: double.infinity,
+              height: 180,
+              fit: BoxFit.cover,
+            ),
+          ),
+        ],
+      ],
+    );
+  }
+
+  Widget _buildEngagementStats() {
+    return Row(
+      children: [
+        _buildStatItem(
+          icon: Icons.favorite_border,
+          count: widget.post.likeCount ?? 0,
+          color: Colors.red,
+        ),
+        const SizedBox(width: 16),
+        _buildStatItem(
+          icon: Icons.chat_bubble_outline,
+          count: widget.post.commentCount ?? 0,
+          color: AppTheme.egyptianBlue,
+        ),
+      ],
+    );
+  }
+
+  Widget _buildStatItem({
+    required IconData icon,
+    required int count,
+    required Color color,
+  }) {
+    return Row(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        Icon(
+          icon,
+          size: 16,
+          color: color.withValues(alpha: 0.7),
+        ),
+        if (count > 0) ...[
+          const SizedBox(width: 4),
+          Text(
+            count.toString(),
+            style: GoogleFonts.inter(
+              color: AppTheme.textSecondary,
+              fontSize: 12,
+              fontWeight: FontWeight.w600,
+            ),
+          ),
+        ],
+      ],
+    );
+  }
+
+  Widget _buildActionButtons() {
+    final isLiked = widget.isLikedOverride ?? (widget.post.isLiked ?? false);
+    return Row(
+      children: [
+        Expanded(
+          child: ElevatedButton.icon(
+            onPressed: () {
+              // Handle reply action
+              widget.onTap?.call();
+            },
+            icon: const Icon(Icons.reply, size: 16),
+            label: const Text('Reply'),
+            style: ElevatedButton.styleFrom(
+              backgroundColor: AppTheme.brightNavy,
+              foregroundColor: Colors.white,
+              padding: const EdgeInsets.symmetric(vertical: 10),
+              shape: RoundedRectangleBorder(
+                borderRadius: BorderRadius.circular(12),
+              ),
+            ),
+          ),
+        ),
+        const SizedBox(width: 8),
+        IconButton(
+          onPressed: widget.onToggleLike,
+          icon: Icon(
+            isLiked ? Icons.favorite : Icons.favorite_border,
+            color: isLiked ? Colors.red : AppTheme.textSecondary,
+          ),
+          style: IconButton.styleFrom(
+            backgroundColor: AppTheme.navyBlue.withValues(alpha: 0.08),
+            shape: RoundedRectangleBorder(
+              borderRadius: BorderRadius.circular(12),
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+
+  String _getPreviewText(String fullText) {
+    // Simple preview - take first 80 characters
+    if (fullText.length <= 80) return fullText;
+    
+    final preview = fullText.substring(0, 80);
+    final lastSpace = preview.lastIndexOf(' ');
+    
+    if (lastSpace > 40) {
+      return '${preview.substring(0, lastSpace)}...';
+    }
+    
+    return '$preview...';
+  }
+
+  String _compactLabel() {
+    final trimmed = widget.post.body.trim();
+    if (trimmed.isEmpty) return 'reply..';
+    return _getPreviewText(trimmed);
+  }
+
+  Widget _buildCompactAvatar() {
+    final avatarUrl = widget.post.author?.avatarUrl;
+    return Container(
+      width: 28,
+      height: 28,
+      decoration: BoxDecoration(
+        color: AppTheme.brightNavy.withValues(alpha: 0.12),
+        borderRadius: BorderRadius.circular(10),
+      ),
+      child: avatarUrl == null
+          ? Center(
+              child: Text(
+                _initialForName(widget.post.author?.displayName),
+                style: GoogleFonts.inter(
+                  color: AppTheme.brightNavy,
+                  fontSize: 11,
+                  fontWeight: FontWeight.w700,
+                ),
+              ),
+            )
+          : ClipRRect(
+              borderRadius: BorderRadius.circular(10),
+              child: SignedMediaImage(
+                url: avatarUrl,
+                width: 28,
+                height: 28,
+                fit: BoxFit.cover,
+              ),
+            ),
+    );
+  }
+
+  String _initialForName(String? name) {
+    final trimmed = name?.trim() ?? '';
+    if (trimmed.isEmpty) return 'S';
+    return trimmed.characters.first.toUpperCase();
+  }
+}

sojorn_app/lib/widgets/post/post_media.dart

@@ -42,14 +42,15 @@ class PostMedia extends StatelessWidget {
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
-            SizedBox(
-              height: _imageHeight,
-              width: double.infinity,
+            ConstrainedBox(
+              constraints: BoxConstraints(maxHeight: _imageHeight),
               child: ClipRRect(
                 borderRadius: BorderRadius.circular(AppTheme.radiusMd),
+                child: SizedBox(
+                  width: double.infinity,
                   child: SignedMediaImage(
                     url: post!.imageUrl!,
-                  fit: mode == PostViewMode.feed ? BoxFit.cover : BoxFit.contain,
+                    fit: BoxFit.contain,
                     loadingBuilder: (context) => Container(
                       color: AppTheme.queenPink.withValues(alpha: 0.3),
                       child: const Center(child: CircularProgressIndicator()),
@@ -73,6 +74,7 @@ class PostMedia extends StatelessWidget {
                   ),
                 ),
               ),
+            ),
           ],
         ),
       );

sojorn_app/lib/widgets/post/sojorn_swipeable_post.dart

@@ -4,7 +4,7 @@ import '../../services/auth_service.dart';
 import '../../models/post.dart';
 import '../../providers/api_provider.dart';
 import '../../theme/app_theme.dart';
-import '../../theme/sojorn_feed_palette.dart';
+import '../../theme/theme_extensions.dart';
 import '../media/signed_media_image.dart';
 import 'package:timeago/timeago.dart' as timeago;
 import '../sojorn_snackbar.dart';
@@ -163,7 +163,9 @@ class _sojornSwipeablePostState extends ConsumerState<sojornSwipeablePost> {
     final screenHeight = MediaQuery.of(context).size.height;
     final hasImage =
         widget.post.imageUrl != null && widget.post.imageUrl!.isNotEmpty;
-    final palette = sojornFeedPalette.forId(widget.post.id);
+    final palette = Theme.of(context).extension<SojornExt>()!.feedPalettes.forId(
+          widget.post.id,
+        );
 
     return GestureDetector(
       onTap: () {
@@ -284,7 +286,7 @@ class _sojornSwipeablePostState extends ConsumerState<sojornSwipeablePost> {
     );
   }
 
-  Widget _buildAuthorInfo(sojornFeedPalette palette) {
+  Widget _buildAuthorInfo(SojornFeedPalette palette) {
     return GestureDetector(
       onTap: widget.onAuthorTap,
       child: Row(
@@ -347,7 +349,7 @@ class _sojornSwipeablePostState extends ConsumerState<sojornSwipeablePost> {
     );
   }
 
-  Widget _buildBackground(sojornFeedPalette palette) {
+  Widget _buildBackground(SojornFeedPalette palette) {
     if (widget.post.imageUrl != null && widget.post.imageUrl!.isNotEmpty) {
       return SignedMediaImage(
         url: widget.post.imageUrl!,
@@ -364,7 +366,7 @@ class _sojornSwipeablePostState extends ConsumerState<sojornSwipeablePost> {
     return _buildGradientBackground(palette);
   }
 
-  Widget _buildGradientBackground(sojornFeedPalette palette) {
+  Widget _buildGradientBackground(SojornFeedPalette palette) {
     return Container(
       decoration: BoxDecoration(
         gradient: LinearGradient(
@@ -383,7 +385,7 @@ class _sojornSwipeablePostState extends ConsumerState<sojornSwipeablePost> {
     return AppTheme.tierNew;
   }
 
-  Widget _buildTextContent(sojornFeedPalette palette,
+  Widget _buildTextContent(SojornFeedPalette palette,
       {required bool isTextOnly}) {
     final text = widget.post.body;
     final maxLines = _textExpanded ? null : (isTextOnly ? 8 : 3);

sojorn_app/lib/widgets/reactions/reaction_strip.dart

@@ -0,0 +1,365 @@
+import 'dart:convert';
+import 'dart:ui';
+
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_animate/flutter_animate.dart';
+import '../../theme/app_theme.dart';
+
+class ReactionStrip extends StatelessWidget {
+  final Map<String, int> reactions;
+  final Set<String> myReactions;
+  final Map<String, List<String>>? reactionUsers;
+  final ValueChanged<String> onToggle;
+  final VoidCallback onAdd;
+  final bool dense;
+
+  const ReactionStrip({
+    super.key,
+    required this.reactions,
+    required this.myReactions,
+    required this.onToggle,
+    required this.onAdd,
+    this.reactionUsers,
+    this.dense = true,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final keys = reactions.keys.toList()..sort();
+
+    return Wrap(
+      spacing: dense ? 6 : 8,
+      runSpacing: dense ? 6 : 8,
+      children: [
+        for (final reaction in keys)
+          _ReactionChip(
+            reactionId: reaction,
+            count: reactions[reaction] ?? 0,
+            isSelected: myReactions.contains(reaction),
+            tooltipNames: reactionUsers?[reaction],
+            onTap: () => onToggle(reaction),
+          ),
+        _ReactionAddButton(onTap: onAdd),
+      ],
+    );
+  }
+}
+
+class _ReactionChip extends StatefulWidget {
+  final String reactionId;
+  final int count;
+  final bool isSelected;
+  final List<String>? tooltipNames;
+  final VoidCallback onTap;
+
+  const _ReactionChip({
+    required this.reactionId,
+    required this.count,
+    required this.isSelected,
+    required this.onTap,
+    this.tooltipNames,
+  });
+
+  @override
+  State<_ReactionChip> createState() => _ReactionChipState();
+}
+
+class _ReactionChipState extends State<_ReactionChip> {
+  int _tapCount = 0;
+
+  void _handleTap() {
+    HapticFeedback.selectionClick();
+    setState(() => _tapCount += 1);
+    widget.onTap();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final background = widget.isSelected
+        ? AppTheme.brightNavy.withValues(alpha: 0.14)
+        : AppTheme.navyBlue.withValues(alpha: 0.08);
+    final borderColor = widget.isSelected
+        ? AppTheme.brightNavy
+        : AppTheme.navyBlue.withValues(alpha: 0.2);
+
+    final chip = InkWell(
+      onTap: _handleTap,
+      borderRadius: BorderRadius.circular(14),
+      child: AnimatedContainer(
+        duration: const Duration(milliseconds: 140),
+        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
+        decoration: BoxDecoration(
+          color: background,
+          borderRadius: BorderRadius.circular(14),
+          border: Border.all(color: borderColor, width: 1.2),
+          boxShadow: widget.isSelected
+              ? [
+                  BoxShadow(
+                    color: AppTheme.brightNavy.withValues(alpha: 0.22),
+                    blurRadius: 10,
+                    offset: const Offset(0, 2),
+                  ),
+                ]
+              : null,
+        ),
+        child: Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            _ReactionIcon(reactionId: widget.reactionId),
+            const SizedBox(width: 6),
+            Text(
+              widget.count.toString(),
+              style: TextStyle(
+                color: AppTheme.navyBlue,
+                fontSize: 12,
+                fontWeight: FontWeight.w700,
+              ),
+            ),
+          ],
+        ),
+      ),
+    )
+        .animate(key: ValueKey(_tapCount))
+        .scale(
+          begin: const Offset(1, 1),
+          end: const Offset(1.08, 1.08),
+          duration: 120.ms,
+          curve: Curves.easeOut,
+        )
+        .then()
+        .scale(
+          begin: const Offset(1.08, 1.08),
+          end: const Offset(1, 1),
+          duration: 180.ms,
+          curve: Curves.easeOutBack,
+        );
+
+    final names = widget.tooltipNames;
+    if (names == null || names.isEmpty) {
+      return chip;
+    }
+
+    return Tooltip(
+      message: names.take(3).join(', '),
+      child: chip,
+    );
+  }
+}
+
+class _ReactionAddButton extends StatelessWidget {
+  final VoidCallback onTap;
+
+  const _ReactionAddButton({required this.onTap});
+
+  @override
+  Widget build(BuildContext context) {
+    return InkWell(
+      onTap: onTap,
+      borderRadius: BorderRadius.circular(14),
+      child: Container(
+        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
+        decoration: BoxDecoration(
+          color: AppTheme.navyBlue.withValues(alpha: 0.06),
+          borderRadius: BorderRadius.circular(14),
+          border: Border.all(
+            color: AppTheme.navyBlue.withValues(alpha: 0.2),
+            width: 1.2,
+          ),
+        ),
+        child: Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            Icon(Icons.add, size: 16, color: AppTheme.navyBlue),
+            const SizedBox(width: 6),
+            Text(
+              'Add',
+              style: TextStyle(
+                color: AppTheme.navyBlue,
+                fontSize: 12,
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class _ReactionIcon extends StatelessWidget {
+  final String reactionId;
+
+  const _ReactionIcon({required this.reactionId});
+
+  @override
+  Widget build(BuildContext context) {
+    if (reactionId.startsWith('asset:')) {
+      final assetPath = reactionId.replaceFirst('asset:', '');
+      return Image.asset(
+        assetPath,
+        width: 18,
+        height: 18,
+        fit: BoxFit.contain,
+      );
+    }
+    return Text(reactionId, style: const TextStyle(fontSize: 16));
+  }
+}
+
+Future<String?> showReactionPicker(
+  BuildContext context, {
+  required List<ReactionItem> baseItems,
+}) {
+  return showModalBottomSheet<String>(
+    context: context,
+    isScrollControlled: true,
+    backgroundColor: Colors.transparent,
+    builder: (context) => _ReactionPickerSheet(baseItems: baseItems),
+  );
+}
+
+class _ReactionPickerSheet extends StatefulWidget {
+  final List<ReactionItem> baseItems;
+
+  const _ReactionPickerSheet({required this.baseItems});
+
+  @override
+  State<_ReactionPickerSheet> createState() => _ReactionPickerSheetState();
+}
+
+class _ReactionPickerSheetState extends State<_ReactionPickerSheet> {
+  final TextEditingController _controller = TextEditingController();
+  List<ReactionItem> _assetItems = [];
+
+  @override
+  void initState() {
+    super.initState();
+    _loadAssetReactions();
+  }
+
+  Future<void> _loadAssetReactions() async {
+    try {
+      final manifest = await DefaultAssetBundle.of(context)
+          .loadString('AssetManifest.json');
+      final map = jsonDecode(manifest) as Map<String, dynamic>;
+      final keys = map.keys
+          .where((key) => key.startsWith('assets/reactions/'))
+          .toList()
+        ..sort();
+      final items = keys
+          .map((path) => ReactionItem(
+                id: 'asset:$path',
+                label: _labelForAsset(path),
+              ))
+          .toList();
+      if (mounted) {
+        setState(() => _assetItems = items);
+      }
+    } catch (_) {
+      // Ignore manifest parsing errors; picker will show base items only.
+    }
+  }
+
+  String _labelForAsset(String path) {
+    final fileName = path.split('/').last;
+    final name = fileName.split('.').first;
+    return name.replaceAll('_', ' ');
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final query = _controller.text.trim().toLowerCase();
+    final items = [...widget.baseItems, ..._assetItems];
+    final filtered = query.isEmpty
+        ? items
+        : items
+            .where((item) =>
+                item.label.toLowerCase().contains(query) ||
+                item.id.toLowerCase().contains(query))
+            .toList();
+
+    return Container(
+      height: MediaQuery.of(context).size.height * 0.55,
+      padding: const EdgeInsets.all(16),
+      decoration: BoxDecoration(
+        color: AppTheme.cardSurface.withValues(alpha: 0.75),
+        borderRadius: const BorderRadius.vertical(top: Radius.circular(24)),
+      ),
+      child: ClipRRect(
+        borderRadius: BorderRadius.circular(20),
+        child: BackdropFilter(
+          filter: ImageFilter.blur(sigmaX: 16, sigmaY: 16),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Text(
+                'Pick a reaction',
+                style: TextStyle(
+                  color: AppTheme.navyBlue,
+                  fontSize: 16,
+                  fontWeight: FontWeight.w700,
+                ),
+              ),
+              const SizedBox(height: 12),
+              TextField(
+                controller: _controller,
+                decoration: InputDecoration(
+                  hintText: 'Search reactions',
+                  prefixIcon: Icon(Icons.search, color: AppTheme.navyBlue),
+                  filled: true,
+                  fillColor: Colors.white.withValues(alpha: 0.2),
+                  border: OutlineInputBorder(
+                    borderRadius: BorderRadius.circular(14),
+                    borderSide: BorderSide.none,
+                  ),
+                ),
+                onChanged: (_) => setState(() {}),
+              ),
+              const SizedBox(height: 12),
+              Expanded(
+                child: GridView.builder(
+                  itemCount: filtered.length,
+                  gridDelegate:
+                      const SliverGridDelegateWithFixedCrossAxisCount(
+                    crossAxisCount: 6,
+                    mainAxisSpacing: 8,
+                    crossAxisSpacing: 8,
+                  ),
+                  itemBuilder: (context, index) {
+                    final item = filtered[index];
+                    return InkWell(
+                      onTap: () => Navigator.of(context).pop(item.id),
+                      borderRadius: BorderRadius.circular(12),
+                      child: Container(
+                        decoration: BoxDecoration(
+                          color: Colors.white.withValues(alpha: 0.2),
+                          borderRadius: BorderRadius.circular(12),
+                          border: Border.all(
+                            color: AppTheme.navyBlue.withValues(alpha: 0.15),
+                          ),
+                        ),
+                        alignment: Alignment.center,
+                        child: _ReactionIcon(reactionId: item.id),
+                      ),
+                    );
+                  },
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class ReactionItem {
+  final String id;
+  final String label;
+
+  const ReactionItem({
+    required this.id,
+    required this.label,
+  });
+}

sojorn_app/pubspec.yaml

@@ -89,6 +89,8 @@ flutter:
   uses-material-design: true
   assets:
     - assets/images/
+    - assets/images/applogo.png
+    - assets/reactions/
     - assets/rive/
     - assets/audio/