Deploy API returns “Entrypoint path does not exist” despite valid zip (flat index.ts)

**Bug report** - [x] I confirm this is a bug with Supabase, not with my own application. - [x] I confirm I have searched the Docs, GitHub Discussions, and Discord. ## Describe the bug Deploying an Edge Function via the new `POST /v1/projects/{ref}/functions/deploy` API returns `400 {"message":"Entrypoint path does not exist - /tmp/.../source/index.ts"}` even though the uploaded zip contains `index.ts` at the root and `metadata.entrypoint_path` is `index.ts`. The archive is flat (no parent folder) and verified right before the request. Tried both `file` and `file[]`, JSON metadata, with/without `bundleOnly=true`, and explicit MIME types—always the same error. ## To Reproduce 1) Create a flat zip: ``` mkdir -p /home/user/tmp/functions zip -j /home/user/tmp/functions/post-suggestions.zip /home/user/supabase/functions/post-suggestions/* unzip -l /home/user/tmp/functions/post-suggestions.zip # shows: # index.ts # deno.json ``` 2) Call the deploy API (same result with `file` or `file[]`): ``` curl -v "https://api.supabase.com/v1/projects/<PROJECT_REF>/functions/deploy?slug=post-suggestions" \ -H "Authorization: Bearer <TOKEN>" \ -F 'file=@/home/user/tmp/functions/post-suggestions.zip;type=application/zip' \ -F 'metadata={"name":"post-suggestions","entrypoint_path":"index.ts","verify_jwt":true};type=application/json' ``` 3) Response: ``` HTTP/2 400 {"message":"Entrypoint path does not exist - /tmp/user_fn_<ref>_<guid>_1/source/index.ts"} ``` ## Expected behavior Function deploy should succeed when the archive has `index.ts` at the root and `entrypoint_path` is `index.ts`. ## Screenshots N/A (see curl -v output above). ## System information - OS: Linux (e2b sandbox) - Browser: N/A (curl) - supabase-js: N/A (using deploy API directly) - Node.js: N/A for this call ## Additional context Tried: - `file` and `file[]` - `metadata` as JSON part vs dotted fields - With and without `bundleOnly=true` - Explicit `;type=application/zip` and `;type=application/json` The zip …