🤖 fix: Wire up init events to frontend WorkspaceStore

Init events were being buffered until "caught-up" but init hooks run during
workspace creation, before the workspace has any history or caught-up status.

Changes:
- Added isInitStart, isInitOutput, isInitEnd imports to WorkspaceStore
- Updated isStreamEvent() to include init events (process immediately)
- Added explicit init event handling in processStreamEvent()
- Init events now bypass caught-up check and process immediately

This ensures the init banner appears in the UI when workspaces are created.

Author: ammar-agent

src/stores/WorkspaceStore.ts

@@ -21,6 +21,9 @@ import {
   isToolCallEnd,
   isReasoningDelta,
   isReasoningEnd,
+  isInitStart,
+  isInitOutput,
+  isInitEnd,
 } from "@/types/ipc";
 import { MapStore } from "./MapStore";
 import { createDisplayUsage } from "@/utils/tokens/tokenStatsCalculator";
@@ -762,7 +765,10 @@ export class WorkspaceStore {
       isToolCallDelta(data) ||
       isToolCallEnd(data) ||
       isReasoningDelta(data) ||
-      isReasoningEnd(data)
+      isReasoningEnd(data) ||
+      isInitStart(data) ||
+      isInitOutput(data) ||
+      isInitEnd(data)
     );
   }
 
@@ -935,6 +941,13 @@ export class WorkspaceStore {
       return;
     }
 
+    // Handle init events (always process immediately, even if not caught up)
+    if (isInitStart(data) || isInitOutput(data) || isInitEnd(data)) {
+      aggregator.handleMessage(data);
+      this.states.bump(workspaceId);
+      return;
+    }
+
     // Regular messages (CmuxMessage without type field)
     const isCaughtUp = this.caughtUp.get(workspaceId) ?? false;
     if (!isCaughtUp) {