fix: Add Cache-Control: no-cache to static files to prevent stale HTML/image caching

server.py

@@ -2417,4 +2417,10 @@ def list_all_service_entrances():
 app.mount("/uploads", StaticFiles(directory=str(UPLOADS_DIR)), name="uploads")
 
 if STATIC_DIR.exists():
-    app.mount("/", StaticFiles(directory=str(STATIC_DIR), html=True), name="static")
+    class NoCacheStaticFiles(StaticFiles):
+        async def get_response(self, path, scope):
+            resp = await super().get_response(path, scope)
+            # No-cache for all static assets (HTML, images, JS, CSS)
+            resp.headers["Cache-Control"] = "no-cache, no-store, must-revalidate"
+            return resp
+    app.mount("/", NoCacheStaticFiles(directory=str(STATIC_DIR), html=True), name="static")

static/index.html

@@ -3126,7 +3126,7 @@
     // ── Category config ───────────────────────────────────────────────────
     const CATEGORY_MAP = {
       'Bev':         { icon: '🥤', color: '#0a7ab5' },
-      'Snack':       { icon: '<img src="icons/chips.png" class="cat-icon-img" alt="">', color: '#c97d0e' },
+      'Snack':       { icon: '<img src="icons/chips.png?v=2" class="cat-icon-img" alt="">', color: '#c97d0e' },
       'Gf bev':      { icon: '🧃', color: '#0a9e5a' },
       'Gf food':     { icon: '🥪', color: '#8a5c2a' },
       'Other':       { icon: '📦', color: '#6b7280' },