feat: V1.0.1 - Setup page, Docker, README

Add password-protected setup page (/api/setup) for DB initialization,
admin creation, and demo data seeding. Dockerize the full stack with
server, client, nginx reverse proxy, and MySQL services. Add project
README with architecture overview, quick start, and VPS deployment guide.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/main.py

@@ -19,6 +19,7 @@ from routers.files import router as files_router
 from routers.settings import router as settings_router
 from routers.reports import router as reports_router
 from routers.statistics import router as statistics_router
+from routers.setup import router as setup_router
 
 
 @asynccontextmanager
@@ -69,6 +70,7 @@ app.include_router(files_router)
 app.include_router(settings_router)
 app.include_router(statistics_router)
 app.include_router(reports_router)
+app.include_router(setup_router)
 
 
 @app.get("/api/health")