[$10 BOUNTY] [Python] Verify build diagnostics are created

[cuentaprueba244w-dotcom]

Bounty: $10 (LT)

Area: diagnostic/ - build diagnostics verification

Current state: Build diagnostics may not be properly generated.

What's needed: Verify build.py generates complete diagnostic artifacts (.logd and .json) even when builds fail.

Acceptance criteria:

• build.py always generates diagnostic files
• Diagnostics include module status, elapsed times, pass/fail counts

Required validation:

• Run python3 build.py
• Include the generated diagnostic .logd artifact from diagnostic/build-XXX.logd in the PR; also include diagnostic/build-XXX.json if present
• Use .github/pull_request_template.md for your submission

[Luzijano]

I’m taking this one now and will submit a scoped PR with the required diagnostics.

[Nexussyn]

Bounty Submission — Runtime Open Federation

Payment address (USDC on Base): 0xb438d36b425b504724a1c72aa0941c80cb940995
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