refactor: restructure repo for cleaner GitHub landing page

Reduce visible top-level items from 21 to 14:
- Untrack test-results/, tmp/, public symlink (added to .gitignore)
- Move agent-teams/ → docs/agent-teams/
- Move mobile-test/ → test/mobile/
- Move tools/remotion/ → scripts/remotion/
- Move eslint.config.js, vitest.config.ts → config/

All path references updated across CLAUDE.md, package.json,
.prettierignore, vitest configs, and capture scripts.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.prettierignore

@@ -6,4 +6,4 @@ src/web/public/app.js
 src/web/public/styles.css
 src/web/public/mobile.css
 src/web/public/index.html
-tools/
+scripts/remotion/