docs: add Cursor Cloud setup instructions to AGENTS.md

[riderx]

Summary (AI generated)

• Added a ## Cursor Cloud specific instructions section to AGENTS.md capturing non-obvious caveats for running the Capgo stack in the Cursor Cloud VM (manual Docker start, worktree-isolated Supabase ports, serve:worktree for the frontend, test env wrapping, seeded login accounts).
• No application code changed; this is environment-setup documentation only.

Motivation (AI generated)

The dev environment was set up from scratch on a fresh VM (Bun, Docker, Supabase local stack, backend edge functions, Vite frontend). Several non-obvious gotchas were discovered during setup that future agents need so they can start services without re-deriving them.

Business Impact (AI generated)

Faster, more reliable onboarding for cloud agents working on Capgo, reducing time lost to environment misconfiguration.

Test Plan (AI generated)

• bun install succeeds
• bun run supabase:start + bun run supabase:db:reset seed the DB
• bun run supabase:functions:serve serves edge functions (/functions/v1/ok → {"status":"ok"})
• bun run serve:worktree serves the console at http://localhost:5173
• bun run lint passes (0 errors)
• Representative backend tests pass (tests/api_version.test.ts, tests/app.test.ts → 20/20)
• Manual hello-world: login as test@capgo.app and toggle a channel setting

Generated with AI

  

[coderabbitai]

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[codspeed-hq]

Merging this PR will not alter performance

✅ 43 untouched benchmarks
⏩ 2 skipped benchmarks¹

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_{Comparing cursor/setup-dev-environment-9b74 (e24e88e) with main (921791a)}

Footnotes

1. 2 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud