v1.1.0 — Hardened Checkup + CI

What's New

🔧 Checkup Improvements

• 7-day error window — checkup now only flags errors from the last 7 days, eliminating false-positive alerts from old resolved issues
• Copilot CLI version check — reports installed CLI version instead of attempting REPL-only update command
• .zshrc syntax check — validates shell config integrity on every checkup
• 13-point diagnostic — up from 11 checks in v1.0.0

🛡️ Code Quality

• Fixed 2 ShellCheck warnings (SC2155, SC2034)
• All scripts pass shellcheck -S warning

🤖 CI & Automation

• Added .github/workflows/ci.yml — ShellCheck lint + macOS smoke tests on every push/PR
• Added .github/dependabot.yml — automated GitHub Actions dependency updates
• Added .github/copilot-setup-steps.yml — cloud agent environment support

�� Docs

• Updated README and AGENTS.md to reflect 13-point checkup
• Corrected checkup item descriptions

Full Changelog: v1.0.0...v1.1.0