feat(channels): add signal-cli channel adapter

src/config/schema.test.ts

@@ -319,6 +319,37 @@ describe('configSchema — matrix', () => {
   });
 });
 
+describe('configSchema — signal', () => {
+  const minimalConfig = {
+    telegram: { bot_token: 'test', allowed_chat_ids: [1] },
+    models: { default: { provider: 'anthropic', model: 'claude-3' } },
+  };
+
+  it('accepts signal config and defaults polling fields', () => {
+    const result = configSchema.parse({
+      ...minimalConfig,
+      signal: {
+        account: '+15551234567',
+      },
+    });
+
+    expect(result.signal).toBeDefined();
+    if (!result.signal) {
+      throw new Error('Expected signal config');
+    }
+    expect(result.signal.account).toBe('+15551234567');
+    expect(result.signal.signal_cli_path).toBe('signal-cli');
+    expect(result.signal.poll_interval_ms).toBe(5000);
+    expect(result.signal.send_timeout_ms).toBe(15000);
+    expect(result.signal.require_mention).toBe(true);
+  });
+
+  it('signal config is optional', () => {
+    const result = configSchema.parse(minimalConfig);
+    expect(result.signal).toBeUndefined();
+  });
+});
+
 describe('configSchema — whatsapp', () => {
   const minimalConfig = {
     telegram: { bot_token: 'test', allowed_chat_ids: [1] },