Fail build app stream on generation or push errors

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Bug and impact

The Build This App API could report success even when Claude failed to generate a file or GitHub/GitLab rejected a file write. In those cases users saw a completed build while the created repository was missing files or contained generated error stubs.

Root cause

Per-file generation errors were converted into placeholder file contents, and repository push helpers only logged non-2xx API responses instead of failing the SSE stream.

Fix

• Throw on failed GitHub/GitLab file writes.
• Emit an SSE error and stop the stream on generation or push failures.
• Avoid double-closing the stream on early exits by relying on the existing finally close.

Validation

• pnpm exec tsc --noEmit
• pnpm exec eslint app/api/build-app/route.ts
• Temporary mocked route harness verified success emits done, while AI generation failure and GitHub push rejection emit error and never emit done.

  

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Project	Deployment	Actions	Updated (UTC)
repo-app-architect	Ready	Preview, Comment	Jun 10, 2026 11:07am
repofuse	Ready	Preview, Comment, Open in v0	Jun 10, 2026 11:07am
v0-repo-app-architect	Ready	Preview, Comment, Open in v0	Jun 10, 2026 11:07am