ci: remove fork-added workflows not in ralph/test/publish

[diberry]

Remove 6 workflows added to the fork that don't fall into the core categories (ralph, test, publish), plus their orphaned scripts, tests, and doc references.

Workflows removed (6)

• squad-docs-links.yml — weekly broken link checker
• squad-impact.yml — PR impact analysis
• squad-repo-health.yml — multi-check repo health
• squad-scope-check.yml — scope boundary enforcement
• squad-pr-nudge.yml — stale PR nudges
• squad-pr-readiness.yml — PR readiness checks

Orphaned scripts removed (7 files)

• scripts/pr-readiness.mjs, repo-health-comment.mjs, analyze-impact.mjs
• scripts/impact-utils/ (parse-diff.mjs, report-generator.mjs, risk-scorer.mjs)

Orphaned tests removed (3 files)

• test/pr-readiness.test.ts
• test/scripts/parse-diff.test.ts, risk-scorer.test.ts

Docs updated (2 files)

• .github/copilot-instructions.md — removed PR Nudge section
• .copilot/skills/pr-lifecycle/SKILL.md — removed workflow references

Total: 3,193 lines deleted across 17 files

[diberry]

Remaining CI workflows (14)

🔄 Ralph (5)

File	Trigger	Fires on PR?
squad-heartbeat.yml	issues (closed/labeled), pull_request, workflow_dispatch	✅ Yes
squad-issue-assign.yml	issues (labeled with squad:*)	❌ Issues only
squad-label-enforce.yml	issues (labeled)	❌ Issues only
squad-triage.yml	issues (labeled with squad)	❌ Issues only
sync-squad-labels.yml	push, workflow_dispatch	✅ Yes (push after merge)

🧪 Test (2)

File	Trigger	Fires on PR?
squad-ci.yml	pull_request, push	✅ Yes
ci-rerun.yml	workflow_dispatch	❌ Manual only

🚢 Publish (4)

File	Trigger	Fires on PR?
squad-insider-publish.yml	push (insider branch)	❌ Branch-specific
squad-insider-release.yml	push (insider branch)	❌ Branch-specific
squad-npm-publish.yml	workflow_dispatch	❌ Manual only
squad-release.yml	push (main/tags)	❌ Main/tags only

📦 Other (upstream, kept) (3)

File	Trigger	Fires on PR?
squad-docs.yml	push, workflow_dispatch	❌ Push only
squad-preview.yml	push (preview branch)	❌ Branch-specific
squad-promote.yml	workflow_dispatch	❌ Manual only

[Copilot]

Pull request overview

Removes a set of fork-added GitHub Actions workflows (and their supporting scripts/tests) so the repo only retains the core workflow set, with minor doc cleanups to drop references to removed automation.

Changes:

• Deleted 6 GitHub Actions workflows (PR readiness, repo health, impact analysis, scope check, PR nudge, docs link check).
• Removed associated Node scripts and impact utilities plus their Vitest coverage.
• Updated Copilot instructions/skills docs to reduce references to removed workflows (needs follow-up for completeness).

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
test/scripts/risk-scorer.test.ts	Deletes tests for removed impact risk scoring utility.
test/scripts/parse-diff.test.ts	Deletes tests for removed diff parsing utility.
test/pr-readiness.test.ts	Deletes tests for removed PR readiness script.
scripts/repo-health-comment.mjs	Deletes comment upsert utility used by removed repo-health workflow.
scripts/pr-readiness.mjs	Deletes PR readiness checker/orchestrator script.
scripts/impact-utils/risk-scorer.mjs	Deletes impact risk scoring utility.
scripts/impact-utils/report-generator.mjs	Deletes impact report markdown generator.
scripts/impact-utils/parse-diff.mjs	Deletes impact diff parsing utility.
scripts/analyze-impact.mjs	Deletes CLI-based PR impact analysis script.
.github/workflows/squad-scope-check.yml	Deletes repo-health scope boundary enforcement workflow.
.github/workflows/squad-repo-health.yml	Deletes repo-health workflow and its comment-posting steps.
.github/workflows/squad-pr-readiness.yml	Deletes PR readiness workflow that posted checklist comments.
.github/workflows/squad-pr-nudge.yml	Deletes scheduled stale-PR nudge workflow.
.github/workflows/squad-impact.yml	Deletes PR impact analysis workflow.
.github/workflows/squad-docs-links.yml	Deletes docs link-check workflow.
.github/copilot-instructions.md	Removes PR Nudge section from Copilot instructions.
.copilot/skills/pr-lifecycle/SKILL.md	Adjusts “source” metadata and references, but still contains now-stale readiness-bot content (see comment).

Comments suppressed due to low confidence (1)

.copilot/skills/pr-lifecycle/SKILL.md:428

• This skill doc still describes an automated PR readiness bot and repeatedly references pr-readiness.mjs / readiness checks as “implemented”, but this PR deletes scripts/pr-readiness.mjs and .github/workflows/squad-pr-readiness.yml. Please revise this section (and any other parts of this doc that assume those checks exist) so guidance matches the repo after these workflow/script removals. Also consider updating other docs that currently claim “the PR readiness bot will validate these automatically” (e.g. PR template / CONTRIBUTING) as part of the same cleanup.

## Readiness Check Gaps & Recommendations

After analyzing `.github/workflows/squad-ci.yml`, three gaps were identified. Gaps 1 and 3 are now implemented (checks 10 and 11). Gap 2 is deferred.

### Gap 1: Issue Linkage Check (Check 10) — IMPLEMENTED

**Problem:** Nothing verifies that the PR body or commit message references an issue (`Closes #N` or `Part of #N`). Orphan PRs are hard to trace.

**Recommendation:** Add `checkIssueLinkage(prBody, commitMessages)` to `pr-readiness.mjs`.

[bradygaster]

thank you for reducing this!