Add dynamic version from Docker/VERSION file

- Create version.py utility to read version from Docker/VERSION
- Replace hardcoded version '1.0.1' with APP_VERSION from version.py
- Add version logging on FastAPI startup
- Use APP_VERSION in health endpoints and template context

src/server/fastapi_app.py

@@ -214,6 +214,7 @@ async def lifespan(_application: FastAPI):
     """
     # Setup logging first with INFO level
     logger = setup_logging(log_level="INFO")
+    logger.info("Starting FastAPI application v%s", APP_VERSION)
     
     # Track successful initialization steps
     initialized = {
@@ -410,9 +411,7 @@ async def lifespan(_application: FastAPI):
             # anime_directory may be configured there even if the env var is empty.
             try:
                 logger.info("Initializing scheduler service...")
-                from src.server.services.scheduler_service import (
-                    get_scheduler_service,
-                )
+                from src.server.services.scheduler_service import get_scheduler_service
                 scheduler_service = get_scheduler_service()
                 logger.info("Scheduler service instance obtained, starting...")
                 await scheduler_service.start()
@@ -542,8 +541,8 @@ async def lifespan(_application: FastAPI):
     
     # 4. Shutdown download service and persist active downloads
     try:
-        from src.server.services.download_service import (  # noqa: E501
-            _download_service_instance,
+        from src.server.services.download_service import (
+            _download_service_instance,  # noqa: E501
         )
         if _download_service_instance is not None:
             logger.info("Stopping download service...")
@@ -600,11 +599,13 @@ async def lifespan(_application: FastAPI):
         raise startup_error
 
 
+from src.server.utils.version import APP_VERSION
+
 # Initialize FastAPI app with lifespan
 app = FastAPI(
     title="Aniworld Download Manager",
     description="Modern web interface for Aniworld anime download management",
-    version="1.0.1",
+    version=APP_VERSION,
     docs_url="/api/docs",
     redoc_url="/api/redoc",
     lifespan=lifespan