v0.3.0

What's Changed

• Add GitHub Actions validation for plugin metadata, skill metadata, docs, and PowerShell syntax.
• Add a one-command install/update script for personal Codex plugin setup.
• Harden installer behavior with dirty-checkout protection, detached/no-upstream checks, marketplace JSON backup writes, malformed JSON errors, metadata preservation, and duplicate entry collapse.
• Expand repo-local validation with installer smoke coverage and capture safety-invariant checks.
• Add troubleshooting guidance for install, execution policy, query matching, browser-tab confirmation, foreground verification, and partial UI Automation text.

Validation

• Repo-local validator with hotkey validation passed.
• Plugin manifest validator passed.
• Skill validator passed.
• PowerShell scripts parse-check passed.
• Five-reviewer PASS/BLOCK gate passed.