Add LINE channel adapter with webhook ingress and gating

src/config/schema.test.ts

@@ -581,6 +581,33 @@ describe('configSchema — bluebubbles', () => {
   });
 });
 
+describe('configSchema — line', () => {
+  const minimalConfig = {
+    telegram: { bot_token: 'test', allowed_chat_ids: [1] },
+    models: { default: { provider: 'anthropic', model: 'claude-3' } },
+  };
+
+  it('accepts line config and defaults optional fields', () => {
+    const result = configSchema.parse({
+      ...minimalConfig,
+      line: {
+        channel_access_token: 'line-token',
+        channel_secret: 'line-secret',
+      },
+    });
+
+    expect(result.line).toBeDefined();
+    if (!result.line) {
+      throw new Error('Expected line config');
+    }
+    expect(result.line.channel_access_token).toBe('line-token');
+    expect(result.line.channel_secret).toBe('line-secret');
+    expect(result.line.allowed_source_ids).toEqual([]);
+    expect(result.line.require_mention).toBe(true);
+    expect(result.line.mention_name).toBe('flynn');
+  });
+});
+
 describe('configSchema — whatsapp', () => {
   const minimalConfig = {
     telegram: { bot_token: 'test', allowed_chat_ids: [1] },