Support trust toggle via chat/update for immediate effect

Wire chat/update through the bridge so trust changes reach the ECA
server immediately and apply to the next tool call without a new prompt.

🤖 Generated with [eca](https://eca.dev)

Co-Authored-By: eca-agent <git@eca.dev>

Author: ericdallo

eca-webview

@@ -222,6 +222,14 @@ export class EcaRemoteApi {
     });
   }
 
+  /** Update chat metadata (title, trust). */
+  async updateChat(chatId: string, params: { title?: string; trust?: boolean }): Promise<void> {
+    return this.request(`/chats/${chatId}/update`, {
+      method: 'POST',
+      body: params,
+    });
+  }
+
   // ---------------------------------------------------------------------------
   // Trust
   // ---------------------------------------------------------------------------

src/bridge/api.ts

@@ -150,6 +150,15 @@ export async function handleOutbound(
         dispatch('chat/queryFiles', { chatId: data.chatId, files: [] });
         break;
 
+      // --- Chat update ---
+      case 'chat/update': {
+        const { chatId, ...params } = data as { chatId: string; title?: string; trust?: boolean };
+        if (chatId) {
+          await api.updateChat(chatId, params);
+        }
+        break;
+      }
+
       // --- Trust mode ---
       case 'server/setTrust':
         await api.setTrust(data);