feat: implement scroll position restoration for mobile tabs and add double-tap home navigation to refresh feed views.

internal/api/handlers.go

@@ -134,6 +134,50 @@ func (h *Handler) UpdatePassword(w http.ResponseWriter, r *http.Request) {
 	h.writeJSON(w, http.StatusOK, map[string]string{"message": "password updated successfully"})
 }
 
+// User Preferences Handlers
+func (h *Handler) GetUserPreferences(w http.ResponseWriter, r *http.Request) {
+	claims, ok := r.Context().Value(auth.UserContextKey).(*auth.Claims)
+	if !ok {
+		h.writeError(w, http.StatusUnauthorized, "unauthorized")
+		return
+	}
+	user, err := h.db.GetUserByUsername(claims.Username)
+	if err != nil {
+		h.writeError(w, http.StatusNotFound, "user not found")
+		return
+	}
+	h.writeJSON(w, http.StatusOK, user.Preferences)
+}
+
+func (h *Handler) UpdateUserPreferences(w http.ResponseWriter, r *http.Request) {
+	claims, ok := r.Context().Value(auth.UserContextKey).(*auth.Claims)
+	if !ok {
+		h.writeError(w, http.StatusUnauthorized, "unauthorized")
+		return
+	}
+	user, err := h.db.GetUserByUsername(claims.Username)
+	if err != nil {
+		h.writeError(w, http.StatusNotFound, "user not found")
+		return
+	}
+	var newPrefs map[string]interface{}
+	if err := json.NewDecoder(r.Body).Decode(&newPrefs); err != nil {
+		h.writeError(w, http.StatusBadRequest, "invalid request payload")
+		return
+	}
+	if user.Preferences == nil {
+		user.Preferences = make(map[string]interface{})
+	}
+	for k, v := range newPrefs {
+		user.Preferences[k] = v
+	}
+	if err := h.db.UpdateUserPreferences(user.ID, user.Preferences); err != nil {
+		h.writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	h.writeJSON(w, http.StatusOK, user.Preferences)
+}
+
 // Stats Handler
 func (h *Handler) GetStats(w http.ResponseWriter, r *http.Request) {
 	stats, err := h.db.GetStats()

internal/api/server.go

@@ -45,6 +45,8 @@ func NewRouter(h *Handler, authService *auth.AuthService, staticDir string) http
 
 			r.Get("/auth/me", h.GetMe)
 			r.Put("/auth/password", h.UpdatePassword)
+			r.Get("/user/preferences", h.GetUserPreferences)
+			r.Put("/user/preferences", h.UpdateUserPreferences)
 			r.Get("/stats", h.GetStats)
 
 			// Categories