fix; tab bars didn't update on post creation without restart of app

src/renderer/components/TabBar/TabBar.tsx

@@ -179,6 +179,7 @@ export const TabBar: React.FC = () => {
   const { 
     tabs, 
     activeTabId, 
+    posts,
     media,
     activeProject,
     dirtyPosts,
@@ -199,6 +200,34 @@ export const TabBar: React.FC = () => {
   // Fetch post titles from database for post tabs
   useEffect(() => {
     const postTabs = tabs.filter(t => t.type === 'post');
+    const postTabIds = new Set(postTabs.map(t => t.id));
+
+    setPostTitles((previous) => {
+      const next = new Map(previous);
+      let changed = false;
+
+      for (const id of Array.from(next.keys())) {
+        if (!postTabIds.has(id)) {
+          next.delete(id);
+          changed = true;
+        }
+      }
+
+      for (const post of posts) {
+        if (!postTabIds.has(post.id)) {
+          continue;
+        }
+
+        const title = post.title || 'Untitled';
+        if (next.get(post.id) !== title) {
+          next.set(post.id, title);
+          changed = true;
+        }
+      }
+
+      return changed ? next : previous;
+    });
+
     if (postTabs.length === 0) return;
 
     const fetchTitles = async () => {
@@ -206,7 +235,9 @@ export const TabBar: React.FC = () => {
       let changed = false;
 
       for (const tab of postTabs) {
-        if (!postTitles.has(tab.id)) {
+        const postInStore = posts.find((post) => post.id === tab.id);
+
+        if (!postInStore) {
           try {
             const post = await window.electronAPI?.posts.get(tab.id);
             if (post) {
@@ -225,7 +256,7 @@ export const TabBar: React.FC = () => {
     };
 
     fetchTitles();
-  }, [tabs]); // Note: intentionally not including postTitles to avoid infinite loops
+  }, [tabs, posts]); // Note: intentionally not including postTitles to avoid infinite loops
 
   // Listen for post updates to refresh titles
   useEffect(() => {

tests/renderer/components/TabBar.test.tsx

@@ -1,6 +1,6 @@
 import React from 'react';
 import { describe, it, expect, beforeEach, vi } from 'vitest';
-import { render, screen } from '@testing-library/react';
+import { act, render, screen } from '@testing-library/react';
 import { TabBar } from '../../../src/renderer/components/TabBar/TabBar';
 import { useAppStore } from '../../../src/renderer/store';
 
@@ -97,4 +97,43 @@ describe('TabBar', () => {
 
     expect(await screen.findByText('Style')).toBeInTheDocument();
   });
+
+  it('updates post tab title when post title changes in store', async () => {
+    useAppStore.setState({
+      tabs: [{ type: 'post', id: 'post-1', isTransient: false }],
+      activeTabId: 'post-1',
+      posts: [{
+        id: 'post-1',
+        title: '',
+        slug: 'post-1',
+        content: '',
+        excerpt: null,
+        author: null,
+        status: 'draft',
+        publishedAt: null,
+        scheduledAt: null,
+        tags: [],
+        categories: [],
+        metadata: {},
+        projectId: 'project-1',
+        createdAt: new Date().toISOString(),
+        updatedAt: new Date().toISOString(),
+      }],
+    });
+
+    (window as any).electronAPI.posts.get = vi.fn().mockResolvedValue({
+      id: 'post-1',
+      title: '',
+    });
+
+    render(<TabBar />);
+
+    expect(await screen.findByText('Untitled')).toBeInTheDocument();
+
+    act(() => {
+      useAppStore.getState().updatePost('post-1', { title: 'Updated Title' });
+    });
+
+    expect(await screen.findByText('Updated Title')).toBeInTheDocument();
+  });
 });