feat(runtime): add talk mode and capture tools

src/config/schema.ts

@@ -472,9 +472,17 @@ const audioProviderSchema = z.object({
   model: z.string().optional(),
 });
 
+const talkModeSchema = z.object({
+  enabled: z.boolean().default(false),
+  wake_phrase: z.string().default('hey flynn'),
+  timeout_ms: z.number().min(1000).max(60 * 60 * 1000).default(120000),
+  allow_manual_toggle: z.boolean().default(true),
+}).default({});
+
 const audioSchema = z.object({
   enabled: z.boolean().default(false),
   provider: audioProviderSchema.optional(),
+  talk_mode: talkModeSchema,
 }).default({});
 
 // ── Tool policy schemas ──────────────────────────────────────────────