feat: Samsung lock screen face widget, voice assistant services, PiP mode and gitignore installers

Add Samsung proprietary Face Widget (lock screen/AOD) with terminal status display.
Add voice interaction services (AgentVoiceInteractionService, RecognitionService) for
digital assistant registration. Add PiP mode with voice/expand actions. Add session-state
proxy, voice transcript routes, window controls component. Ignore installers/ directory.

server/routes/session-state-proxy.ts

@@ -0,0 +1,26 @@
+import { jsonResponse, errorResponse } from '../utils/cors'
+import { PORT_TERMINAL } from '../config'
+
+/**
+ * Proxy GET /api/session-state → terminal server.
+ * Returns session-state + terminal-registry combined,
+ * so external clients (Android widget) get everything in one call.
+ */
+export async function handleSessionStateProxy(url: URL): Promise<Response> {
+  try {
+    const [stateResp, registryResp] = await Promise.all([
+      fetch(`http://localhost:${PORT_TERMINAL}/session-state`),
+      fetch(`http://localhost:${PORT_TERMINAL}/terminal-registry`)
+    ])
+
+    const stateData = stateResp.ok ? await stateResp.json() : { agents: {} }
+    const registryData = registryResp.ok ? await registryResp.json() : { registry: [] }
+
+    return jsonResponse({
+      agents: stateData.agents ?? {},
+      registry: registryData.registry ?? []
+    })
+  } catch (e: any) {
+    return errorResponse(`Failed to reach terminal server: ${e.message}`, 502)
+  }
+}