[codex] Add feedback MCP tools

[datashaman]

Summary

Adds a separate database-backed feedback channel for developer and agent process feedback.

Changes

• Add an evolve_feedback table and EvolveFeedback model.
• Add send-feedback and triage-feedback MCP tools via SendFeedback and TriageFeedback.
• Persist feedback through EvolveFeedbackRepository instead of repo JSON state.
• Register the new tools on the Evolve MCP server.
• Remove the slow Growth sync GitHub Actions workflow.
• Add feature coverage for feedback dry-run, persistence, triage, and workflow removal.

Validation

• php artisan test tests/Feature/EvolveMcpServerTest.php
• composer lint:check
• php artisan test