chore: add Claude Code skills for GitHub operations

Add github-ops skill for automated issue and PR management.

.claude/skills/release/SKILL.md

@@ -0,0 +1,57 @@
+---
+name: release
+description: Use this skill when preparing, validating, and publishing a Mole release.
+---
+
+# Release Skill
+
+Use this skill when preparing or executing a Mole release.
+
+## Release Checklist
+
+### Pre-Release
+1. [ ] All tests pass: `./scripts/test.sh`
+2. [ ] Format check: `./scripts/check.sh --format`
+3. [ ] No uncommitted changes: `git status`
+
+### Version Bump
+
+Update version in:
+- `bin/mole` (VERSION variable)
+- `install.sh` (if version referenced)
+
+### Build Verification
+
+```bash
+# Build
+make build
+
+# Test dry run
+MOLE_DRY_RUN=1 ./mole clean
+```
+
+## Release Process
+
+### 1. Create Git Tag
+
+```bash
+# Create annotated tag
+git tag -a v0.x.x -m "Release v0.x.x"
+
+# Push tag
+git push origin v0.x.x
+```
+
+### 2. GitHub Release
+
+Create release via GitHub UI or:
+```bash
+gh release create v0.x.x --generate-notes
+```
+
+## Safety Rules
+
+1. **NEVER** auto-commit release changes
+2. **ALWAYS** test build before tagging
+3. **ALWAYS** verify tests pass
+4. **NEVER** include local paths in release notes