Fix API endpoint routing for tasks

- Directly import tasks endpoints in main.py for more explicit routing
- Create API v1 router in main.py instead of using a separate module
- Simplify routing structure to ensure endpoints are accessible

main.py

@@ -1,9 +1,9 @@
 """Task Manager API main application file."""
 import uvicorn
-from fastapi import FastAPI
+from fastapi import APIRouter, FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 
-from app.api.v1.api import api_router
+from app.api.v1.endpoints import tasks
 from app.core.config import settings
 
 app = FastAPI(
@@ -24,8 +24,14 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
-# Include API router
-app.include_router(api_router)
+# Create API router for v1
+api_v1_router = APIRouter(prefix="/api/v1")
+
+# Add tasks endpoints directly to v1 router
+api_v1_router.include_router(tasks.router, prefix="/tasks", tags=["tasks"])
+
+# Include API v1 router in main app
+app.include_router(api_v1_router)
 
 
 @app.get("/", tags=["Root"])