Fix auth login URL and migrate users/me endpoint

- Fix SNAKKIMO_URL.replace('/api','') bug that stripped both /api occurrences
  producing wrong auth URL → use endswith/slice to remove only trailing /api
- Replace directus_users_me with JWT decode (snakkimo has no /users/me endpoint)
  Returns Directus-compatible shape with role.admin_access for UI admin checks

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app.py

@@ -87,8 +87,10 @@ def directus_auth_login():
     body = request.get_json(force=True, silent=True) or {}
     # Directus-Format: {"email": ..., "password": ...} → snakkimo gleich
     req_body = {"email": body.get("email", ""), "password": body.get("password", "")}
+    # Strip trailing /api to get base URL: https://host/api/snakkimo
+    snakkimo_base = SNAKKIMO_URL[:-4] if SNAKKIMO_URL.endswith('/api') else SNAKKIMO_URL
     req = urllib.request.Request(
-        f"{SNAKKIMO_URL.replace('/api', '')}/auth/login",
+        f"{snakkimo_base}/auth/login",
         data=json.dumps(req_body).encode(),
         headers={"Content-Type": "application/json"},
         method="POST",
@@ -105,11 +107,29 @@ def directus_auth_login():
 
 @app.route("/api/directus/users/me", methods=["GET"])
 def directus_users_me():
-    """Proxy: aktueller User inkl. Rolle (für Begrüßung + Admin-Check)."""
-    token = request.headers.get("Authorization", "")
-    fields = "id,first_name,last_name,email,role.id,role.name,role.admin_access"
-    data, status = _directus("GET", f"/users/me?fields={fields}", token)
-    return jsonify(data), status
+    """Returns current user info decoded from JWT in Directus-compatible shape."""
+    auth = request.headers.get("Authorization", "")
+    raw_token = auth.removeprefix("Bearer ").strip()
+    if not raw_token:
+        return jsonify({"error": "Unauthorized"}), 401
+    try:
+        # Decode JWT payload without verification (signature checked by snakkimo)
+        import base64
+        payload_b64 = raw_token.split(".")[1]
+        # Add padding if needed
+        payload_b64 += "=" * (-len(payload_b64) % 4)
+        payload = json.loads(base64.urlsafe_b64decode(payload_b64).decode("utf-8"))
+        role = payload.get("role", "end-user")
+        is_admin = role == "admin"
+        return jsonify({"data": {
+            "id": payload.get("userId", ""),
+            "email": payload.get("email", ""),
+            "first_name": "",
+            "last_name": "",
+            "role": {"id": role, "name": role, "admin_access": is_admin},
+        }}), 200
+    except Exception as e:
+        return jsonify({"error": f"Token decode failed: {e}"}), 401
 
 
 @app.route("/api/directus/pictures", methods=["GET"])