[$6 BOUNTY] [Python] Enforce uppercase LEGACY comments

[cuentaprueba244w-dotcom]

Bounty: $6 (LT)

Area: tools/legacy_caps_audit.py - LEGACY uppercase enforcement audit

Current state: Files containing legacy references do not consistently include an uppercase LEGACY comment marker.

What's needed: Audit script that verifies every file containing legacy (case-insensitive) also contains LEGACY (uppercase) in a comment. Fix all violations.

Acceptance criteria:

• Create tools/legacy_caps_audit.py that verifies the rule across the repo
• All violations fixed with appropriate comment syntax per language
• Script returns zero exit code when all files pass

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
We can complete this task and deliver within 24h. Please assign to confirm.

[reckoning89]

PR: #62