Phase 3 Step 21: Port review-uat, review-proof

[aberson]

Build step 21 ? Phase 3 (umbrella #3)

Build doc: docs/skill-mesh-plan.md (aberson/coding-root)

What to build

Remaining review-family skills. Lower complexity than review-deep but need verification of GPT output format consistency.

Files to modify/create

.claude/skills-gpt/review-uat/, .claude/skills-gpt/review-proof/ (new)

Done when

Both have SKILL-gpt.md; test invocations via --model gpt produce correctly structured output; calibration passes.

Flags (recommended)

--reviewers code

Depends on

none (see plan ordering)

Produces

(none specified)

Parallel-safe with

#22 (Step 17), #23 (Step 18), #24 (Step 19), #25 (Step 20), #27 (Step 22)

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