Initial commit: PastPaper Master full stack

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/app/main.py

@@ -0,0 +1,59 @@
+import asyncio
+import threading
+from contextlib import asynccontextmanager
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from app.routers import analytics, papers, attempts, questions
+
+
+def _resume_stale_papers():
+    """启动时检查卡在 processing 的 paper，自动续传 AI trio"""
+    try:
+        from app.services.supabase_client import get_supabase
+        from app.services.paper_processor import process_paper
+
+        sb = get_supabase()
+        stale = sb.table("papers").select("id").eq("status", "processing").execute().data
+        if not stale:
+            return
+
+        for p in stale:
+            paper_id = p["id"]
+            print(f"[STARTUP] Resuming processing for paper {paper_id[:8]}...")
+
+            def run(pid=paper_id):
+                asyncio.run(process_paper(pid, b"", None))
+
+            threading.Thread(target=run, daemon=True).start()
+    except Exception as e:
+        print(f"[STARTUP] Resume skipped: {e}")
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    # Startup
+    _resume_stale_papers()
+    yield
+    # Shutdown (nothing to do)
+
+
+app = FastAPI(title="PastPaper Master API", version="0.1.0", lifespan=lifespan)
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],  # 开发阶段先放开，上线收紧
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+app.include_router(papers.router, prefix="/api/papers", tags=["papers"])
+app.include_router(attempts.router, prefix="/api/attempts", tags=["attempts"])
+app.include_router(questions.router, prefix="/api/questions", tags=["questions"])
+app.include_router(analytics.router, prefix="/api/analytics", tags=["analytics"])
+
+
+@app.get("/health")
+def health():
+    return {"status": "ok"}