diff --git a/src/main.py b/src/main.py
index 31e14aa..5c0cb61 100644
--- a/src/main.py
+++ b/src/main.py
@@ -1,3 +1,4 @@
+import hashlib
 import logging
 import logging.handlers
 import os
@@ -56,6 +57,15 @@ from routers.admins import router as admins_router
 from routers.stats import router as stats_router
 from routers.telegram import router as telegram_router
 
+# ── Cache-bust hash (SHA-1 of all static file contents) ──────────────────────
+def _static_hash(static_dir: str) -> str:
+    h = hashlib.sha1()
+    for root, _, files in sorted(os.walk(static_dir)):
+        for name in sorted(files):
+            with open(os.path.join(root, name), "rb") as f:
+                h.update(f.read())
+    return h.hexdigest()[:8]
+
 # ── App ───────────────────────────────────────────────────────────────────────
 @asynccontextmanager
 async def lifespan(app: FastAPI):
@@ -132,10 +142,10 @@ async def _serve_admin() -> FileResponse:
 
 
 @app.get("/sw.js", include_in_schema=False)
-async def _serve_sw() -> FileResponse:
-    return FileResponse(
-        os.path.join(_STATIC_DIR, "sw.js"), media_type="application/javascript"
-    )
+async def _serve_sw() -> Response:
+    sw_path = os.path.join(_STATIC_DIR, "sw.js")
+    content = open(sw_path, encoding="utf-8").read().replace("__STATIC_HASH__", _static_hash(os.path.join(os.path.dirname(os.path.abspath(__file__)), "static")))
+    return Response(content=content, media_type="application/javascript")
 
 
 @app.get("/manifest.json", include_in_schema=False)
diff --git a/src/routers/__init__.py b/src/routers/__init__.py
index 9c8ddfa..e69de29 100644
--- a/src/routers/__init__.py
+++ b/src/routers/__init__.py
@@ -1 +0,0 @@
-# routers package
diff --git a/src/services/__init__.py b/src/services/__init__.py
index 9924c7a..e69de29 100644
--- a/src/services/__init__.py
+++ b/src/services/__init__.py
@@ -1,7 +0,0 @@
-from .avconnect import AVConnectAPI
-from .gates import call_open_gate
-
-__all__ = [
-    "AVConnectAPI",
-    "call_open_gate",
-]
\ No newline at end of file
diff --git a/src/static/admin.html b/src/static/admin.html
index b657c30..08e5f5f 100644
--- a/src/static/admin.html
+++ b/src/static/admin.html
@@ -136,9 +136,9 @@
     <nav class="tabs">
       <button class="tab-btn active" data-tab="keypasses">Keypasses</button>
       <button class="tab-btn" data-tab="gates">Gates</button>
-      <button class="tab-btn admin-only" data-tab="credentials">API Credentials</button>
       <button class="tab-btn" data-tab="stats">Statistics</button>
       <button class="tab-btn admin-only" data-tab="admins">Admins</button>
+      <button class="tab-btn admin-only" data-tab="credentials">API Credentials</button>
       <button class="tab-btn admin-only" data-tab="telegram">Notifications</button>
     </nav>
 
diff --git a/src/static/sw.js b/src/static/sw.js
index 12ffc8b..43b85f5 100644
--- a/src/static/sw.js
+++ b/src/static/sw.js
@@ -1,5 +1,5 @@
 /* Service worker - Lagomare Gates */
-const CACHE = "lagomare-gates-v1";
+const CACHE = "lagomare-gates-__STATIC_HASH__";
 const PRECACHE = ["/static/style.css", "/static/app.js", "/static/images/logo.svg", "/static/images/mobile_icon.png", "/manifest.json"];
 
 self.addEventListener("install", event => {