Fix #312: structure non-TS tail assertions

[flyingrobots]

Summary

• replace raw package/jsr/tsconfig/vitest source-text assertions with structured imports and config-module inspection
• keep the tracked non-TypeScript tail inventory as the repository file proof
• preserve the sha1sync export and stale .js glob guardrails without scanning config text

Closes #312

Validation

• npm exec vitest run test/unit/scripts/non-ts-tail-shape.test.ts
• npm run typecheck:test
• pre-push IRONCLAD gates 0-7 passed with WARP_QUICK_PUSH=1

[coderabbitai]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 3c7a0b4f-c282-4b10-8091-cb2594a554fe

📥 Commits

Reviewing files that changed from the base of the PR and between a21fb8b and 1b3ce66.

📒 Files selected for processing (1)

• test/unit/scripts/non-ts-tail-shape.test.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix-312-non-ts-tail-structured

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[github-actions]

Release Preflight

• package version: 18.0.0
• prerelease: false
• npm dist-tag on release: latest
• npm pack dry-run: passed
• jsr publish dry-run: passed

If you tag this commit as v18.0.0, release workflow will publish.

[flyingrobots]

Code Lawyer Findings

@codex please confirm this review posture.

Severity	File	Lines	Type	Issue	Recommended mitigation prompt
P3 Medium	test/unit/scripts/non-ts-tail-shape.test.ts	L61-L72	Test coverage regression	The rewrite removed the previous assertion that vitest.config.ts remains wired to scripts/coverage-ratchet.ts. The new structured assertions cover the include globs but not the coverage-ratchet hook that the old text assertion protected.	Add a structured assertion that vitestConfig.test.coverage.thresholds.autoUpdate matches shouldAutoUpdateCoverageRatchet(), and prove the ratchet helper returns true only for the explicit update env flag.

[flyingrobots]

Code Lawyer Activity Summary

@codex please confirm this closure.

Source	Severity	File	Lines	Issue	Commit	Outcome
Self	P3 Medium	test/unit/scripts/non-ts-tail-shape.test.ts	L61-L72	Structured assertion rewrite dropped the previous coverage-ratchet hook witness.	1b3ce66f	Added a structured assertion that the Vitest threshold autoUpdate value matches shouldAutoUpdateCoverageRatchet(), plus direct helper truth-table checks.

Validation:

• npm exec vitest run test/unit/scripts/non-ts-tail-shape.test.ts
• npm run typecheck:test
• npm run lint -- test/unit/scripts/non-ts-tail-shape.test.ts
• git diff --check
• WARP_QUICK_PUSH=1 git push static pre-push gates 0-7 passed; unit gate intentionally skipped by quick mode.

[github-actions]

Release Preflight

• package version: 18.0.0
• prerelease: false
• npm dist-tag on release: latest
• npm pack dry-run: passed
• jsr publish dry-run: passed

If you tag this commit as v18.0.0, release workflow will publish.