docs: rewrite CHANGELOG.md with v2.0.0 release (65 skills, 9 domains) (#226)
* docs: rewrite CHANGELOG.md with v2.0.0 release (65 skills, 9 domains)
- Consolidate 191 commits since v1.0.2 into proper v2.0.0 entry
- Document 12 POWERFUL-tier skills, 37 refactored skills
- Add new domains: business-growth, finance
- Document Codex support and marketplace integration
- Update version history summary table
- Clean up [Unreleased] to only planned work
* docs: add 24 POWERFUL-tier skills to plugin, fix counts to 85 across all docs
- Add engineering-advanced-skills plugin (24 POWERFUL-tier skills) to marketplace.json
- Add 13 missing skills to CHANGELOG v2.0.0 (agent-workflow-designer, api-test-suite-builder,
changelog-generator, ci-cd-pipeline-builder, codebase-onboarding, database-schema-designer,
env-secrets-manager, git-worktree-manager, mcp-server-builder, monorepo-navigator,
performance-profiler, pr-review-expert, runbook-generator)
- Fix skill count: 86→85 (excl sample-skill) across README, CHANGELOG, marketplace.json
- Fix stale 53→85 references in README
- Add engineering-advanced-skills install command to README
- Update marketplace.json version to 2.0.0
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Co-authored-by: Leo <leo@openclaw.ai>
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