[Feature Request] Add Plan File Export Hook for Tracking Accepted Code Generation Plans

Bug Description
allow hook for writing plans out to a 'plan file' into project, acts as a history of accepted plans in claude

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.0.11
• Feedback ID: 17dfe1b9-e31d-4bd3-849b-930c9da9447c

Errors

[{"error":"Error: {\"error\":{\"name\":\"Error\",\"message\":\"Failed to run sql query: ERROR:  42703: column \\\"has_completed_onboarding\\\" does not exist\\nLINE 1: SELECT email, has_completed_onboarding, created_at FROM profiles LIMIT 20;\\n                      ^\\n\"}}\n    at Ck2 (file:///Users/benritchie/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1095:18530)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Object.call (file:///Users/benritchie/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1095:13289)\n    at async xY5 (file:///Users/benritchie/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2605:27140)\n    at async OfB (file:///Users/benritchie/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2605:23266)\n    at async _Y5 (file:///Users/benritchie/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2605:22127)\n    at async SY5 (file:///Users/benritchie/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2605:21664)\n    at async BR (file:///Users/benritchie/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2605:18662)\n    at async BR (file:///Users/benritchie/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2605:19592)\n    at async BR (file:///Users/benritchie/.nvm/versions/node/v22.14.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2605:19592)","timestamp":"2025-10-09T12:27:20.308Z"}]