docs: codify Vercel Preview retention policy - #628
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Reviewer's GuideThis documentation-focused PR codifies a dry-run-first, least-privilege Vercel Preview retention procedure gated on successful post-merge CI and CodeQL runs, while protecting production and active review state, clarifying redaction and verification requirements, and distinguishing GitHub Deployment record pruning from Vercel artifact cleanup. Flow diagram for post-merge Vercel Preview reconciliationflowchart TD
Merge[Merge to main] --> Gate[Wait for exact main SHA CI and CodeQL to succeed]
Gate --> Enumerate[Enumerate Vercel deployments]
Enumerate --> DryRun[Create redacted dry-run manifest]
DryRun --> Refresh[Refresh PRs branches aliases and deployment state]
Refresh --> Classify{Explicitly SAFE_TO_DELETE?}
Classify -->|No| Defer[Protect or defer deployment]
Classify -->|Yes| Delete[Delete explicit deployment ID with rate limiting]
Delete --> Verify[Re-enumerate and verify Production and active Previews]
Verify -->|Protected state changed| Stop[Hard stop]
Verify -->|Proof passes| Continue[Begin dependent repository mutation]
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Documentation changes correctly codify the Vercel Preview retention policy as described. The new policy document provides clear, comprehensive guidelines for manual Vercel Preview cleanup with appropriate safety guardrails. Cross-references in workflow comments, agent guides, and deployment docs properly distinguish GitHub Deployment records from Vercel deployment artifacts. No blocking issues found.
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📝 WalkthroughWalkthroughThe pull request adds a Vercel Preview retention policy, post-merge requirements, cleanup safeguards, verification steps, and documentation. It also clarifies that the existing workflow prunes GitHub Deployment records, not Vercel deployment artifacts. ChangesVercel Preview retention
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: 🟡 Moderate · up to The retention procedure may permit deletion of deployments still needed for production rollback. Add promotion-state and rollback-eligibility checks before merging the policy. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Actionable comments posted: 2
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Inline comments:
In `@docs/DEPLOYMENT.md`:
- Around line 50-51: Update the retention procedure wording to apply only after
a successful merge to main, replacing the broader “after each merged PR” scope.
State that the resulting-main SHA is available and that the required CI and
CodeQL runs must succeed before the authenticated Preview retention procedure
begins.
In `@docs/VERCEL-PREVIEW-RETENTION-POLICY.md`:
- Around line 60-61: Update the closed-or-merged PR rule in the preview
retention policy to permit deletion only for previews already satisfying
SAFE_TO_DELETE, while preserving the protected current-main commit and existing
alias checks.
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.github/workflows/prune-deployments.ymlAGENTS.mdCLAUDE.mddocs/DEPLOYMENT.mddocs/PR-CI-MERGE-WORKFLOW.mddocs/VERCEL-PREVIEW-RETENTION-POLICY.md
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Actionable comments posted: 1
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Inline comments:
In `@docs/VERCEL-PREVIEW-RETENTION-POLICY.md`:
- Around line 59-63: Update the protection-gate logic and manifest to include
provider-supported rollback-history and promotion-state evidence, then
revalidate rollback eligibility per deployment ID alongside the existing checks
near the per-ID validation flow. Treat deployments with promotion state such as
readySubstate=PROMOTED or other rollback-eligible status as protected, including
when target is null, and never classify them as SAFE_TO_DELETE while
rollback-eligible.
After applying the fix, consider running `coderabbit review --agent` for local
review. Visit https://docs.coderabbit.ai/cli.
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Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
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.github/workflows/prune-deployments.ymldocs/DEPLOYMENT.mddocs/VERCEL-PREVIEW-RETENTION-POLICY.md
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User description
Summary
Relates to #627. This PR does not add Vercel deletion automation or touch Production.
Validation
pnpm run ci:prepushpassed;git diff --checkpassed;.codegraph/.gitignoreintentionally excluded.Summary by Sourcery
Codify a safe, evidence-based process for retaining and cleaning up Vercel Preview deployments after merges without adding deletion automation or modifying Production.
Enhancements:
Documentation:
Summary by CodeRabbit
Documentation
Chores
CodeAnt-AI Description
Codify a guarded process for retaining and cleaning up Vercel Preview deployments
What Changed
Impact
✅ Safer Vercel Preview cleanup✅ Fewer accidental Production or active-review deletions✅ Clearer separation between GitHub record pruning and Vercel artifact retention💡 Usage Guide
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