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>

test/mobile/vitest.config.ts

@@ -0,0 +1,17 @@
+import { resolve } from 'node:path';
+import { defineConfig } from 'vitest/config';
+
+const root = resolve(import.meta.dirname, '../..');
+
+export default defineConfig({
+  test: {
+    root,
+    globals: true,
+    environment: 'node',
+    include: ['test/mobile/**/*.test.ts'],
+    setupFiles: ['./test/setup.ts'],
+    fileParallelism: false,
+    testTimeout: 60_000,
+    teardownTimeout: 60_000,
+  },
+});