fix: skip malformed pull request entries (#83)

src/main.py

@@ -119,6 +119,10 @@ async def context() -> JSONResponse:
         PullRequest(id=p["id"], number=p["number"], title=p["title"], state=p["state"], user=(p.get("user") or {}).get("login", ""), url=p["html_url"])
         for p in (prs_data or [])[:50]
         if isinstance(p, dict)
+        and all(
+            field in p
+            for field in ("id", "number", "title", "state", "html_url")
+        )
     ]
     ctx = compute(user_model, repo_models, issue_models, pr_models)
     return JSONResponse(ctx.model_dump())