[WIP] Update tip with non-empty file diffs

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

SUCCESSOR after closed empty #6 (plan-only / zero file diffs >8 min).

Repo: neural-llm-io/power-claude tip — owned first-party.

ULTRA-TIGHT ONE-FIX — first coding commit MUST have real non-empty file diffs:
Pick ONE tip-evident: coding-standards OR release-ready OR one focused test-coverage deepen. No theater.

RULES: Inspect tip first. Real diffs required. If nothing tip-evident, say so and stop. One PR vs tip. Fail-closed.