diff --git a/AgentCompany-New/src/main/app/ipc-handlers.ts b/AgentCompany-New/src/main/app/ipc-handlers.ts
index b7e82abe..3a0e5328 100644
--- a/AgentCompany-New/src/main/app/ipc-handlers.ts
+++ b/AgentCompany-New/src/main/app/ipc-handlers.ts
@@ -42,7 +42,12 @@ export function registerIpcHandlers(deps: IpcDeps): void {
   const providers = new ProviderService(deps.connection.db);
   const providerOAuth = new ProviderOAuthService();
   const skills = new SkillService(deps.connection.db, deps.artifactRoot);
-  const taskExecution = new TaskExecutionService(deps.connection.db, providers, skills);
+  const notifyDataChanged = () => {
+    if (!deps.mainWindow.isDestroyed()) {
+      deps.mainWindow.webContents.send(IPC_CHANNELS.rendererEvent, { type: "snapshot-changed" });
+    }
+  };
+  const taskExecution = new TaskExecutionService(deps.connection.db, providers, skills, notifyDataChanged);
   const social = new SocialService(deps.connection.db);
   const files = new FileService(deps.connection.db, deps.artifactRoot);
   const migrations = new MigrationService(deps.connection.db);
diff --git a/AgentCompany-New/src/main/app/task-queue-worker.ts b/AgentCompany-New/src/main/app/task-queue-worker.ts
index 2821cf18..f15d0a6c 100644
--- a/AgentCompany-New/src/main/app/task-queue-worker.ts
+++ b/AgentCompany-New/src/main/app/task-queue-worker.ts
@@ -40,7 +40,12 @@ export function claimNextQueuedRun(connection: DatabaseConnection): QueuedRun |
  * verified by row changes) so a run is never executed twice.
  */
 export function startTaskQueueWorker(input: TaskQueueWorkerInput): () => void {
-  const taskExecution = new TaskExecutionService(input.connection.db);
+  const notifyDataChanged = () => {
+    if (!input.mainWindow.isDestroyed()) {
+      input.mainWindow.webContents.send(IPC_CHANNELS.rendererEvent, { type: "snapshot-changed" });
+    }
+  };
+  const taskExecution = new TaskExecutionService(input.connection.db, undefined, undefined, notifyDataChanged);
   const intervalMs = input.intervalMs ?? DEFAULT_INTERVAL_MS;
   let running = false;
 
@@ -51,19 +56,16 @@ export function startTaskQueueWorker(input: TaskQueueWorkerInput): () => void {
       const enqueued = input.connection.transaction(() => taskExecution.enqueueHeartbeatRuns());
       const claimed = claimNextQueuedRun(input.connection);
       if (!claimed) {
-        if (enqueued.length > 0 && !input.mainWindow.isDestroyed()) {
-          input.mainWindow.webContents.send(IPC_CHANNELS.rendererEvent, { type: "snapshot-changed" });
-        }
+        if (enqueued.length > 0) notifyDataChanged();
         return;
       }
+      notifyDataChanged();
       try {
         await taskExecution.executeRun(claimed.org_id, claimed.id);
       } catch {
         // executeRun records the failure on the run row; the UI reflects it below.
       }
-      if (!input.mainWindow.isDestroyed()) {
-        input.mainWindow.webContents.send(IPC_CHANNELS.rendererEvent, { type: "snapshot-changed" });
-      }
+      notifyDataChanged();
     } finally {
       running = false;
     }
diff --git a/AgentCompany-New/src/main/services/agent-run-loop.ts b/AgentCompany-New/src/main/services/agent-run-loop.ts
index acb95b1f..953ec254 100644
--- a/AgentCompany-New/src/main/services/agent-run-loop.ts
+++ b/AgentCompany-New/src/main/services/agent-run-loop.ts
@@ -23,6 +23,8 @@ export interface AgentRunLoopResult {
 export interface AgentRunLoopDeps {
   providers: Pick<ProviderService, "runToolTurn">;
   tools: AgentToolDeps;
+  /** Called after each iteration's tool calls have written their effects. */
+  onToolResults?: () => void;
 }
 
 /**
@@ -63,6 +65,7 @@ export async function runAgentLoop(deps: AgentRunLoopDeps, input: AgentRunLoopIn
       return { toolCallId: call.id, toolName: call.name, output: dispatchAgentTool(deps.tools, input.toolContext, call) };
     });
     messages.push({ role: "tool", results });
+    deps.onToolResults?.();
   }
 
   throw new Error(`Agent run did not converge within ${MAX_ITERATIONS} iterations.`);
diff --git a/AgentCompany-New/src/main/services/task-execution-service.ts b/AgentCompany-New/src/main/services/task-execution-service.ts
index 02e3d5de..e6317d2b 100644
--- a/AgentCompany-New/src/main/services/task-execution-service.ts
+++ b/AgentCompany-New/src/main/services/task-execution-service.ts
@@ -54,6 +54,8 @@ export class TaskExecutionService {
     private readonly db: DatabaseSync,
     private readonly providers: ProviderService = new ProviderService(db),
     private readonly skills: SkillService = new SkillService(db, ""),
+    /** Invoked whenever a run writes data mid-flight, so the UI can refresh while agents work. */
+    private readonly notifyDataChanged: () => void = () => undefined,
   ) {
     this.audit = new AuditService(db);
     this.organization = new OrganizationService(db);
@@ -118,7 +120,11 @@ export class TaskExecutionService {
       };
       const chatContext = this.loadChatContext(orgId, isolation);
       const result = await runAgentLoop(
-        { providers: this.providers, tools: { db: this.db, organization: this.organization, chat: this.chat } },
+        {
+          providers: this.providers,
+          tools: { db: this.db, organization: this.organization, chat: this.chat },
+          onToolResults: this.notifyDataChanged,
+        },
         {
           orgId,
           providerId: provider.id,
diff --git a/AgentCompany-New/tests/unit/agent-run-loop.test.ts b/AgentCompany-New/tests/unit/agent-run-loop.test.ts
index 83318d30..44bcb361 100644
--- a/AgentCompany-New/tests/unit/agent-run-loop.test.ts
+++ b/AgentCompany-New/tests/unit/agent-run-loop.test.ts
@@ -80,14 +80,21 @@ describe("agent run loop (real tool dispatch)", () => {
       { text: "Team staffed, work delegated, plan written.", toolCalls: [] },
     ];
 
+    let toolResultNotifications = 0;
     const result = await runAgentLoop(
-      { providers: fakeProvider(script), tools: { db: connection.db, organization, chat: new ChatService(connection.db) } },
+      {
+        providers: fakeProvider(script),
+        tools: { db: connection.db, organization, chat: new ChatService(connection.db) },
+        onToolResults: () => { toolResultNotifications += 1; },
+      },
       { orgId, providerId, workspaceId, instructions: "You are the CEO.", initialUserTurn: "Start the company.", toolContext },
     );
 
     expect(result.iterations).toBe(4);
     expect(result.toolCallCount).toBe(5);
     expect(result.finalText).toContain("Team staffed");
+    // The UI is told about new data after every tool-bearing iteration, not only at the end.
+    expect(toolResultNotifications).toBe(3);
 
     const agentNames = (connection.db.prepare("select name from agents where org_id = ? order by name").all(orgId) as Array<{ name: string }>).map((r) => r.name);
     expect(agentNames).toEqual(["Alex Rivera", "CEO", "Sam Lee"]);