Merge Luma launcher fork into monorepo

Move trampoline files (boot-hook, watcher, overlay) into trampoline/
subdirectory. Add upstream Luma v2.3.1 source at repo root with our
additions:

- Page::Ha (4th nav tab) with placeholder empty state
- HA tab config schema and default entity mapping (ha-home/)
- Nav keys renamed: "home" → "start", new "ha" tab between Apps and Settings
- All state.rs/view.rs/main.rs/tests.rs updated for 4-tab navigation

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tools/deploy.mjs

@@ -0,0 +1,26 @@
+import fs from 'node:fs/promises';
+import path from 'node:path';
+import { spawnSync } from 'node:child_process';
+
+const root = path.resolve(import.meta.dirname, '..');
+const deviceIndex = process.argv.indexOf('--device');
+const device = deviceIndex >= 0 ? process.argv[deviceIndex + 1] : 'tv';
+if (!device || !/^[a-zA-Z0-9_-]+$/.test(device))
+  throw new Error('Pass an ares device profile: pnpm run deploy --device tv');
+const manifest = JSON.parse(await fs.readFile(path.join(root, 'appinfo.json'), 'utf8'));
+for (const [tool, args] of [
+  [
+    'ares-install',
+    ['--device', device, path.join(root, 'dist', `${manifest.id}_${manifest.version}_arm.ipk`)],
+  ],
+  ['ares-launch', ['--device', device, manifest.id]],
+]) {
+  const cli = path.join(root, 'node_modules/@webos-tools/cli/bin', `${tool}.js`);
+  const result = spawnSync(process.execPath, [cli, ...args], {
+    cwd: root,
+    stdio: 'inherit',
+    timeout: 120000,
+  });
+  if (result.error) throw result.error;
+  if (result.status !== 0) process.exit(result.status ?? 1);
+}