internal: Migrate as many agent rules to standard SKILLS or AGENTS

[ntucker]

Motivation

• Standardizing agent usage allows people using things other than cursor
• Library users can download skills to use in their projects

Solution

Open questions

---

Note

Low Risk
Low risk documentation-only changes that affect developer tooling guidance, not runtime behavior.

Overview
Shifts .cursor guidance away from file-path rule references to named skills (adds frontmatter name/metadata to multiple SKILL.md files and updates cross-references like rdc-rest, rdc-schema, rdc-manager, and packages-documentation).

Updates contributor onboarding and release-note instructions to prefer /initialize and /changeset commands, and applies small markdown formatting cleanups (e.g., commit link formatting, newline fixes).

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[changeset-bot]

⚠️ No Changeset found

Latest commit: de7ab44

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[github-actions]

Size Change: 0 B

Total Size: 79.8 kB

ℹ️ View Unchanged

Filename	Size
examples/test-bundlesize/dist/App.js	3.42 kB
examples/test-bundlesize/dist/polyfill.js	308 B
examples/test-bundlesize/dist/rdcClient.js	10.2 kB
examples/test-bundlesize/dist/rdcEndpoint.js	5.84 kB
examples/test-bundlesize/dist/react.js	59.4 kB
examples/test-bundlesize/dist/webpack-runtime.js	726 B

_{compressed-size-action}

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.13%. Comparing base (3fe656e) to head (de7ab44).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3722   +/-   ##
=======================================
  Coverage   98.13%   98.13%           
=======================================
  Files         150      150           
  Lines        2736     2736           
  Branches      537      537           
=======================================
  Hits         2685     2685           
  Misses         11       11           
  Partials       40       40           

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