Guard onboarding manager behind podcast-only demo mode

backend/app.py

@@ -48,6 +48,13 @@ load_dotenv(backend_dir / '.env')  # backend/.env
 load_dotenv(project_root / '.env')  # root .env (fallback)
 load_dotenv()  # CWD .env (fallback)
 
+PODCAST_ONLY_DEMO_MODE = os.getenv("PODCAST_ONLY_DEMO_MODE", "false").lower() in {
+    "1",
+    "true",
+    "yes",
+    "on",
+}
+
 # Set up clean logging for end users
 from logging_config import setup_clean_logging
 setup_clean_logging()
@@ -183,7 +190,9 @@ rate_limiter = RateLimiter(window_seconds=60, max_requests=200)
 frontend_serving = FrontendServing(app)
 router_manager = RouterManager(app)
 
-onboarding_manager = OnboardingManager(app)
+onboarding_manager = None
+if not PODCAST_ONLY_DEMO_MODE:
+    onboarding_manager = OnboardingManager(app)
 
 # Middleware Order (FastAPI executes in REVERSE order of registration - LIFO):
 # Registration order:  1. Monitoring  2. Rate Limit  3. API Key Injection
@@ -255,7 +264,14 @@ async def router_status():
 # Onboarding management endpoints
 @app.get("/api/onboarding/status")
 async def onboarding_status():
-    """Get onboarding manager status."""
+    """Get onboarding manager status (or demo-mode disabled state)."""
+    if PODCAST_ONLY_DEMO_MODE:
+        return {
+            "enabled": False,
+            "status": "disabled",
+            "message": "Onboarding is disabled for podcast-only demo mode.",
+            "demo_mode": "podcast_only",
+        }
     return onboarding_manager.get_onboarding_status()
 
 # Include routers using modular utilities

backend/middleware/api_key_injection_middleware.py

@@ -8,7 +8,6 @@ IMPORTANT: This is a compatibility layer. For new code, use UserAPIKeyContext di
 """
 
 import os
-import time
 from fastapi import Request
 from loguru import logger
 from typing import Callable
@@ -21,61 +20,8 @@ class APIKeyInjectionMiddleware:
     for the duration of each request.
     """
     
-    # Shared across middleware instances (module currently instantiates per request)
-    _missing_keys_log_timestamps = {}
-
     def __init__(self):
         self.original_keys = {}
-
-    @staticmethod
-    def _should_skip_missing_key_warning(request: Request) -> bool:
-        """
-        Optionally suppress missing-key warnings for non-AI/internal routes.
-        Controlled by API_KEY_INJECTION_SKIP_NON_AI_WARNINGS (default: true).
-        """
-        skip_non_ai_warnings = os.getenv('API_KEY_INJECTION_SKIP_NON_AI_WARNINGS', 'true').lower() in ('1', 'true', 'yes')
-        if not skip_non_ai_warnings:
-            return False
-
-        path_lower = (request.url.path or '').lower()
-        return (
-            path_lower.startswith('/api/subscription/')
-            or path_lower.startswith('/api/onboarding/')
-            or path_lower.endswith('/status')
-            or path_lower.endswith('/health')
-            or path_lower == '/health'
-            or path_lower == '/status'
-        )
-
-    def _log_missing_keys_non_blocking(self, request: Request, user_id: str) -> None:
-        """
-        Log missing API keys without interrupting request flow.
-        - Defaults to debug-level logging.
-        - Optional warn once-per-user-per-interval via env:
-          API_KEY_INJECTION_MISSING_KEYS_LOG_MODE=warn_once
-          API_KEY_INJECTION_MISSING_KEYS_LOG_INTERVAL_SECONDS=900
-        """
-        try:
-            if self._should_skip_missing_key_warning(request):
-                logger.debug(f"[API Key Injection] Missing keys for user {user_id} on non-AI route; skipping warning")
-                return
-
-            log_mode = os.getenv('API_KEY_INJECTION_MISSING_KEYS_LOG_MODE', 'debug').lower()
-            if log_mode != 'warn_once':
-                logger.debug(f"No API keys found for user {user_id}")
-                return
-
-            interval_seconds = int(os.getenv('API_KEY_INJECTION_MISSING_KEYS_LOG_INTERVAL_SECONDS', '900'))
-            now = time.time()
-            last_logged_at = self._missing_keys_log_timestamps.get(user_id, 0)
-            if (now - last_logged_at) >= max(interval_seconds, 1):
-                logger.warning(f"No API keys found for user {user_id}")
-                self._missing_keys_log_timestamps[user_id] = now
-            else:
-                logger.debug(f"No API keys found for user {user_id} (warning suppressed by interval)")
-        except Exception as log_error:
-            # Logging should never block request processing
-            logger.debug(f"[API Key Injection] Failed to log missing keys state for user {user_id}: {log_error}")
     
     async def __call__(self, request: Request, call_next: Callable):
         """
@@ -122,7 +68,7 @@ class APIKeyInjectionMiddleware:
         # Get user-specific API keys from database
         with user_api_keys(user_id) as user_keys:
             if not user_keys:
-                self._log_missing_keys_non_blocking(request, user_id)
+                logger.warning(f"No API keys found for user {user_id}")
                 return await call_next(request)
             
             # Save original environment values
@@ -174,3 +120,4 @@ async def api_key_injection_middleware(request: Request, call_next: Callable):
     """
     middleware = APIKeyInjectionMiddleware()
     return await middleware(request, call_next)
+