Is this upload handler safe?

Secure coding × continuous pentesting.

Follow the manual handoffs, the Bravos orchestration loop, and the next code change.

1. 00 · The question. Maya’s upload handler in src/api/avatar.ts works, but nobody has shown whether it is safe.
2. 03 · The gap. Alex filed SEC-142 against commit 3240499; main has moved to 275c6f3 and nobody can say whether it still reproduces.
3. 04–07. Maya adds GuardLink annotations, a probe uploads a harmless .html file to a local copy of the app, and the result is confirmed: stored, then served as text/html.
4. Open-source foundation. GuardLink captures code context; CXG tests behavior. Use them independently and coordinate the workflow your way.
5. Enterprise orchestration (illustrative). Bravos builds on that foundation: annotation, sandbox and authentication setup, CXG templates and testing, outcome ledgers, and code updates form one coordinated round.
6. 08 · Together. Pull request #231 adds a file-signature check, and both review the same finding on the diff.
7. 09–10. The same request against the fix gets 415, the old file 404s, checks pass and the pull request is merged.
8. The next change (illustrative). Maya takes ownership with @owner. A mitigation introduces another exposure; verification finds it and a configured CI gate blocks merging. Revision and retesting continue before review.
9. Keep the loop running. Git carries the committed context to teammates when they sync. The next change starts another round.