chore: initial commit — existing single-user document scanner codebase

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

backend/main.py

@@ -0,0 +1,33 @@
+from contextlib import asynccontextmanager
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from config import ensure_data_dirs
+from api.documents import router as documents_router
+from api.topics import router as topics_router
+from api.settings import router as settings_router
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    ensure_data_dirs()
+    yield
+
+
+app = FastAPI(title="Document Scanner API", version="1.0.0", lifespan=lifespan)
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
+@app.get("/health")
+async def health():
+    return {"status": "ok"}
+
+
+app.include_router(documents_router)
+app.include_router(topics_router)
+app.include_router(settings_router)