[Feature Request] Add optional mode for suggesting tests and best practices

Bug Description
sometimes it would be great if Claude Code could suggest things like certain tests, common practice etc. Maybe a mode to switch on off

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.81
• Feedback ID: e8c24d1a-c46b-432f-9087-de4c1e3ca523

Errors

[{"error":"Error: Request was aborted.\n    at w0T (/$bunfs/root/src/entrypoints/cli.js:1907:8297)\n    at next (native:1:11)\n    at B29 (/$bunfs/root/src/entrypoints/cli.js:7276:7438)\n    at next (native:1:11)\n    at c29 (/$bunfs/root/src/entrypoints/cli.js:7281:10008)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-24T11:39:15.754Z"},{"error":"MaxFileReadTokenExceededError: File content (10586 tokens) exceeds maximum allowed tokens (10000). Use offset and limit parameters to read specific portions of the file, or search for specific content instead of reading the whole file.\n    at gT9 (/$bunfs/root/src/entrypoints/cli.js:4312:23670)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-24T11:40:47.984Z"},{"error":"Error: File does not exist. Note: your current working directory is /Users/raymon/Projects/involver-portal.\n    at call (/$bunfs/root/src/entrypoints/cli.js:4321:6398)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-24T11:41:00.819Z"},{"error":"Error: EISDIR: illegal operation on a directory, read '/Users/raymon/Projects/involver-portal/apps/frontend/src/app/api/data-approvals'\n    at B$_ (/$bunfs/root/src/entrypoints/cli.js:925:8336)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-24T11:41:15.821Z"},{"error":"MaxFileReadTokenExceededError: File content (10586 tokens) exceeds maximum allowed tokens (10000). Use offset and limit parameters to read specific portions of the file, or search for specific content instead of reading the whole file.\n    at gT9 (/$bunfs/root/src/entrypoints/cli.js:4312:23670)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-24T11:44:40.211Z"},{"error":"MaxFileReadTokenExceededError: File content (11579 tokens) exceeds maximum allowed tokens (10000). Use offset and limit parameters to read specific portions of the file, or search for specific content instead of reading the whole file.\n    at gT9 (/$bunfs/root/src/entrypoints/cli.js:4312:23670)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-24T12:45:24.754Z"}]