docs: replace stale repo-map references with repo-intel

[avifenesh]

Summary

• Replace 4 stale repo-map references in README with repo-intel (plugin was renamed).
• Replace 2 references in skills/sync-docs/SKILL.md (including the repo-map.json cache file name, now repo-intel.json).
• Add npm test and npm run validate scripts so the pre-push hook and shared ci-node workflow have a smoke test to run (matches drift-detect and repo-intel).

Why

Detected during a workspace-wide repo-intel doc-drift scan.

Test plan

• CI passes
• Verify docs match code

Docs-only change (plus the small tooling fix needed to unblock the pre-push hook).

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Note

Low Risk
Low risk: primarily documentation wording updates plus adding simple npm test/validate scripts that only require('./lib') and shouldn’t affect runtime behavior.

Overview
Updates docs to replace stale repo-map references with repo-intel (including CLI flag/help text, optional ast-grep integration notes, and related plugin links).

Adds npm test and validate scripts that run a lightweight Node require check (require('./lib')) to give CI/pre-push hooks a basic smoke test.

^{Reviewed by Cursor Bugbot for commit 2bdd09e. Configure here.}

[gemini-code-assist]

Code Review

This pull request renames references from repo-map to repo-intel across the documentation and adds basic test and validation scripts to package.json. A review comment points out a potential inconsistency in the documentation update for SKILL.md, noting that the underlying implementation may still be using repo-map.json as its primary cache file.