docs(tests): collapse compounded footer blocks

[eleshar]

linked issues

N/A - residue cleanup from automation path proving (PR #3440) plus pre-existing compounding.

context

• Severity/Impact: Low (docs cosmetics, 72 junk lines)
• Affected versions/environments: tests/README.md

reproduction

• Steps: N/A (cleanup, not a defect). Background: the file carried 25 stacked footer blocks from the pre-fix era (bot runs appending instead of replacing once emphasis markers drifted from ... to ... — root cause fixed in fix: match asterisk-wrapped footers in dedup regex #3443).

root cause

• Legacy compounding predating fix: match asterisk-wrapped footers in dedup regex #3443, plus my path-proving edit (docs(tests): add remediation cross-reference #3440) which stripped the canonical footer. The fixed dedup regex stops further appends but normalizes only the tail block per run, so the backlog needs one manual collapse.

fix summary

• Replaced the 25-block tail with the single canonical footer (the exact form meta.agent.js writes for this file).

verification

• Ran meta.agent.js against the cleaned file: changed:false (idempotent, no further normalization)
• Line count 428 to 356, single footer block remaining

risk & rollback

• Risk level: Low
• Rollback plan: revert this commit

changelog

Fixed

• Compounded footers cleanup: collapsed 25 duplicated footer blocks in tests/README.md to the single canonical footer.

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Checklist (Global DoD / PR)

• All AC met and demonstrated
• Tests added/updated (unit/E2E as appropriate)
• Accessibility checklist completed (where relevant): N/A - footer dedup, no UI
• Docs/readme/changelog updated (if user-facing)
• Security checklist completed (where relevant): N/A - docs only, no input or secrets
• Code/design reviews approved
• CI green; linked issues closed; release notes prepared (if shipping)

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📥 Commits

Reviewing files that changed from the base of the PR and between 642cced and 3f33247.

📒 Files selected for processing (2)

• CHANGELOG.md
• tests/README.md

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[github-actions]

📋 Changelog Quality Validation

Summary

Metric	Count
✅ Passing	77
⚠️ Warnings	0
❌ Failing	8
🆕 New failures in this PR	1
📦 Pre-existing failures	7

Status

❌ Validation FAILED - This PR introduces 1 new changelog failure(s). Please fix them before merging.
Pre-existing failures (7) are reported for visibility and do not block this PR.

How to Fix

Reproduce the exact PR check locally (from the repository root):

cd .github/validation/changelog
node bin/validate.js --changelog-path ../../../CHANGELOG.md --trigger pr_submission --pr-number 3447 --branch fix/tests-readme-footer-restore --output text

Only new failures introduced by this PR block merging; pre-existing Unreleased failures do not block. See Changelog Quality Audit for the rule reference.

[github-actions]

PR Template Routing

Branch Type: fix
Scope: tests-readme-footer-restore
Template: pr_bug.md
Labels Applied: type:bug,area:integration,area:documentation,area:testing

This PR was automatically routed based on the branch naming strategy.

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