`POST /uploads/:fileId/complete` — confirm + verify

[codebestia]

After upload, client confirms. Server HEADs the object, verifies size matches, optionally verifies ciphertext sha256, and flips the file to ready. Unconfirmed pending files are garbage-collected. Only ready files may be referenced by a file message.

Acceptance criteria:

• Server verifies object presence + size before marking ready
• Size/hash mismatch → 400, file stays pending
• Only ready files referenceable in messages

[muhsar27]

@muhsar27 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi maintainer, I would like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @muhsar27 to this issue.

[drips-wave]

Congratulations, @muhsar27! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @muhsar27: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊