[codex] Reset fingerprint implementation vocabulary

[nahiyankhan]

🤖 Draft stack PR opened by my AI agent.

Summary

• Tightens the implementation vocabulary used across fingerprint schema, checks, scan status, and emitted review/context text.
• Updates docs, skill references, and the root fingerprint package to use the reset terminology consistently.
• Adjusts tests and fixtures so the vocabulary contract is enforced in code.

Impact

The top of the stack makes the new fingerprint YAML surface read consistently across product docs, agent recipes, CLI output, and TypeScript APIs before the stack lands.

Stack

• Branch stack position: 11 of 11
• PR stack position: 10 of 10
• Base: codex/fingerprint-legacy-cleanup
• Head: codex/fingerprint-implementation-vocabulary-reset
• Previous PR: [codex] Clean up legacy fingerprint surfaces #96

Validation

• /opt/homebrew/bin/pnpm build
• PATH=/opt/homebrew/bin:$PATH /opt/homebrew/bin/pnpm check
• PATH=/opt/homebrew/bin:$PATH /opt/homebrew/bin/pnpm test (493 tests passed)