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/helpers/server.ts

@@ -0,0 +1,30 @@
+import { WebServer } from '../../src/web/server.js';
+
+let servers: Map<number, WebServer> = new Map();
+
+export async function createTestServer(port: number): Promise<WebServer> {
+  if (servers.has(port)) {
+    return servers.get(port)!;
+  }
+  const server = new WebServer(port, false, true); // testMode = true
+  await server.start();
+  servers.set(port, server);
+  return server;
+}
+
+export async function stopTestServer(server: WebServer): Promise<void> {
+  await server.stop();
+  for (const [port, s] of servers) {
+    if (s === server) {
+      servers.delete(port);
+      break;
+    }
+  }
+}
+
+export async function stopAllTestServers(): Promise<void> {
+  for (const server of servers.values()) {
+    await server.stop();
+  }
+  servers.clear();
+}