adding a queue system to the agent runner

apps/ui/src/lib/http-api-client.ts

@@ -829,6 +829,47 @@ export class HttpApiClient implements ElectronAPI {
     onStream: (callback: (data: unknown) => void): (() => void) => {
       return this.subscribeToEvent('agent:stream', callback as EventCallback);
     },
+
+    // Queue management
+    queueAdd: (
+      sessionId: string,
+      message: string,
+      imagePaths?: string[],
+      model?: string
+    ): Promise<{
+      success: boolean;
+      queuedPrompt?: {
+        id: string;
+        message: string;
+        imagePaths?: string[];
+        model?: string;
+        addedAt: string;
+      };
+      error?: string;
+    }> => this.post('/api/agent/queue/add', { sessionId, message, imagePaths, model }),
+
+    queueList: (
+      sessionId: string
+    ): Promise<{
+      success: boolean;
+      queue?: Array<{
+        id: string;
+        message: string;
+        imagePaths?: string[];
+        model?: string;
+        addedAt: string;
+      }>;
+      error?: string;
+    }> => this.post('/api/agent/queue/list', { sessionId }),
+
+    queueRemove: (
+      sessionId: string,
+      promptId: string
+    ): Promise<{ success: boolean; error?: string }> =>
+      this.post('/api/agent/queue/remove', { sessionId, promptId }),
+
+    queueClear: (sessionId: string): Promise<{ success: boolean; error?: string }> =>
+      this.post('/api/agent/queue/clear', { sessionId }),
   };
 
   // Templates API
@@ -1045,6 +1086,45 @@ export class HttpApiClient implements ElectronAPI {
       error?: string;
     }> => this.post('/api/context/describe-file', { filePath }),
   };
+
+  // Backlog Plan API
+  backlogPlan = {
+    generate: (
+      projectPath: string,
+      prompt: string,
+      model?: string
+    ): Promise<{ success: boolean; error?: string }> =>
+      this.post('/api/backlog-plan/generate', { projectPath, prompt, model }),
+
+    stop: (): Promise<{ success: boolean; error?: string }> =>
+      this.post('/api/backlog-plan/stop', {}),
+
+    status: (): Promise<{ success: boolean; isRunning?: boolean; error?: string }> =>
+      this.get('/api/backlog-plan/status'),
+
+    apply: (
+      projectPath: string,
+      plan: {
+        changes: Array<{
+          type: 'add' | 'update' | 'delete';
+          featureId?: string;
+          feature?: Record<string, unknown>;
+          reason: string;
+        }>;
+        summary: string;
+        dependencyUpdates: Array<{
+          featureId: string;
+          removedDependencies: string[];
+          addedDependencies: string[];
+        }>;
+      }
+    ): Promise<{ success: boolean; appliedChanges?: string[]; error?: string }> =>
+      this.post('/api/backlog-plan/apply', { projectPath, plan }),
+
+    onEvent: (callback: (data: unknown) => void): (() => void) => {
+      return this.subscribeToEvent('backlog-plan:event', callback as EventCallback);
+    },
+  };
 }
 
 // Singleton instance