• Merge pull request #683 from kaitranntt/kai/fix/copilot-daemon-liveness-dx
• fix(copilot): refine ownership checks and command error handling
• fix(copilot): harden daemon lifecycle and validate config updates
• refactor(daemon): share process ownership guard for safe shutdown
• fix(copilot): sync alias UX and harden daemon stop safety
• fix(copilot): improve daemon liveness and flag aliases