api(auth): add auth endpoints (setup, login, logout, status), tests, and dependency token decoding; update docs

src/server/fastapi_app.py

@@ -17,6 +17,7 @@ from src.config.settings import settings
 
 # Import core functionality
 from src.core.SeriesApp import SeriesApp
+from src.server.api.auth import router as auth_router
 from src.server.controllers.error_controller import (
     not_found_handler,
     server_error_handler,
@@ -51,6 +52,7 @@ app.mount("/static", StaticFiles(directory=str(STATIC_DIR)), name="static")
 # Include routers
 app.include_router(health_router)
 app.include_router(page_router)
+app.include_router(auth_router)
 
 # Global variables for application state
 series_app: Optional[SeriesApp] = None