Add explicit docs configuration and debug endpoints

- Explicitly configure docs_url and redoc_url in FastAPI app
- Add /debug endpoint to verify FastAPI is running correctly
- Enhance root endpoint with more helpful information
- Helps troubleshoot reverse proxy configuration issues

🤖 Generated with BackendIM

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

main.py

@@ -12,7 +12,9 @@ app = FastAPI(
     title=settings.APP_NAME,
     version=settings.APP_VERSION,
     description="AI-Powered Resume & Job Match Hub - Helping job seekers find the perfect match",
-    openapi_url="/openapi.json"
+    openapi_url="/openapi.json",
+    docs_url="/docs",
+    redoc_url="/redoc"
 )
 
 # Configure CORS
@@ -35,8 +37,15 @@ async def root():
         "service": settings.APP_NAME,
         "version": settings.APP_VERSION,
         "description": "AI-Powered Resume & Job Match Hub",
+        "message": "FastAPI application is running successfully",
+        "endpoints": {
             "documentation": "/docs",
-        "health_check": "/health"
+            "alternative_docs": "/redoc", 
+            "openapi_schema": "/openapi.json",
+            "health_check": "/health",
+            "debug_info": "/debug",
+            "api_base": "/api/v1"
+        }
     }
 
 
@@ -48,3 +57,24 @@ async def health_check():
         "service": settings.APP_NAME,
         "version": settings.APP_VERSION
     }
+
+
+@app.get("/debug")
+async def debug_info():
+    """Debug endpoint to verify FastAPI is running"""
+    import os
+    return {
+        "message": "FastAPI application is running",
+        "service": settings.APP_NAME,
+        "version": settings.APP_VERSION,
+        "python_version": os.sys.version,
+        "available_endpoints": [
+            "/",
+            "/health", 
+            "/debug",
+            "/docs",
+            "/redoc", 
+            "/openapi.json",
+            "/api/v1/*"
+        ]
+    }