Add chat flag, remove flag, and fork support

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

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

Author: ericdallo

eca-webview

@@ -170,6 +170,29 @@ export class EcaRemoteApi {
     return this.request(`/chats/${chatId}/clear`, { method: 'POST' });
   }
 
+  /** Add a flag to a chat at a specific content ID. */
+  async addFlag(chatId: string, contentId: string, text: string): Promise<void> {
+    return this.request(`/chats/${chatId}/flag`, {
+      method: 'POST',
+      body: { contentId, text },
+    });
+  }
+
+  /** Remove a flag from a chat. */
+  async removeFlag(chatId: string, contentId: string): Promise<void> {
+    return this.request(`/chats/${chatId}/flag/${contentId}`, {
+      method: 'DELETE',
+    });
+  }
+
+  /** Fork a chat from a specific flag. */
+  async forkChat(chatId: string, contentId: string): Promise<void> {
+    return this.request(`/chats/${chatId}/fork`, {
+      method: 'POST',
+      body: { contentId },
+    });
+  }
+
   /** Delete a chat entirely. */
   async deleteChat(chatId: string): Promise<void> {
     return this.request(`/chats/${chatId}`, { method: 'DELETE' });

src/bridge/api.ts

@@ -84,6 +84,22 @@ export async function handleOutbound(
         await api.clearChat(data.chatId);
         break;
 
+      case 'chat/addFlag': {
+        const text = window.prompt('Enter flag name');
+        if (text) {
+          await api.addFlag(data.chatId, data.contentId, text);
+        }
+        break;
+      }
+
+      case 'chat/removeFlag':
+        await api.removeFlag(data.chatId, data.contentId);
+        break;
+
+      case 'chat/fork':
+        await api.forkChat(data.chatId, data.contentId);
+        break;
+
       // --- Config changes (apply to current chat) ---
       case 'chat/selectedModelChanged':
         await withCurrentChat(ctx, (chatId) => api.changeModel(chatId, data.model));

src/bridge/outbound-handler.ts

@@ -243,6 +243,9 @@ export type OutboundMessage =
   | { type: 'chat/delete'; data: { chatId: string } }
   | { type: 'chat/rollback'; data: { chatId: string; contentId: string } }
   | { type: 'chat/clearChat'; data: { chatId: string } }
+  | { type: 'chat/addFlag'; data: { chatId: string; contentId: string } }
+  | { type: 'chat/removeFlag'; data: { chatId: string; contentId: string } }
+  | { type: 'chat/fork'; data: { chatId: string; contentId: string } }
   | { type: 'chat/selectedModelChanged'; data: { model: string } }
   | { type: 'chat/selectedAgentChanged'; data: { agent: string } }
   | { type: 'chat/selectedVariantChanged'; data: { variant: string } }