diff --git a/src/main/main.ts b/src/main/main.ts
index acea793..45f1a29 100644
--- a/src/main/main.ts
+++ b/src/main/main.ts
@@ -19,6 +19,8 @@ let activePreviewPostId: string | null = null;
 let appInitialized = false;
 let blogmarkQueue: string[] = [];
 let blogmarkQueueProcessing = false;
+let pendingBlogmarkCreatedEvents: unknown[] = [];
+let rendererReady = false;
 const PREVIEW_SERVER_PORT = 4123;
 const BLOG_PREVIEW_POST_MENU_ID = APP_MENU_ITEM_IDS.previewPost;
 const BLOGMARK_PROTOCOL = 'bds';
@@ -201,6 +203,7 @@ protocol.registerSchemesAsPrivileged([
 ]);
 
 function createWindow(): void {
+  rendererReady = false;
   const isMac = process.platform === 'darwin';
   const initialWindowState = resolveInitialWindowState();
   mainWindow = new BrowserWindow({
@@ -376,8 +379,22 @@ async function processBlogmarkDeepLink(rawDeepLink: string): Promise<void> {
     categories: preferredCategory ? [preferredCategory] : [],
   });
 
-  if (mainWindow && !mainWindow.isDestroyed()) {
+  if (mainWindow && !mainWindow.isDestroyed() && rendererReady) {
     mainWindow.webContents.send('blogmark:created', createdPost);
+  } else {
+    pendingBlogmarkCreatedEvents.push(createdPost);
+  }
+}
+
+function flushPendingBlogmarkCreatedEvents(): void {
+  if (!rendererReady || !mainWindow || mainWindow.isDestroyed() || pendingBlogmarkCreatedEvents.length === 0) {
+    return;
+  }
+
+  const queuedEvents = pendingBlogmarkCreatedEvents;
+  pendingBlogmarkCreatedEvents = [];
+  for (const payload of queuedEvents) {
+    mainWindow.webContents.send('blogmark:created', payload);
   }
 }
 
@@ -708,6 +725,12 @@ async function initialize(): Promise<void> {
     activePreviewPostId = typeof postId === 'string' && postId.length > 0 ? postId : null;
     setPreviewPostMenuEnabled(Boolean(activePreviewPostId));
   });
+
+  ipcMain.handle('app:rendererReady', async () => {
+    rendererReady = true;
+    flushPendingBlogmarkCreatedEvents();
+    return true;
+  });
   
   // Initialize and register chat handlers
   initializeChatHandlers(() => mainWindow);
diff --git a/src/main/preload.ts b/src/main/preload.ts
index a25652f..cdc1ca0 100644
--- a/src/main/preload.ts
+++ b/src/main/preload.ts
@@ -147,6 +147,7 @@ export const electronAPI: ElectronAPI = {
     readProjectMetadata: (folderPath: string) => ipcRenderer.invoke('app:readProjectMetadata', folderPath),
     getBlogmarkBookmarklet: () => ipcRenderer.invoke('app:getBlogmarkBookmarklet'),
     copyToClipboard: (text: string) => ipcRenderer.invoke('app:copyToClipboard', text),
+    notifyRendererReady: () => ipcRenderer.invoke('app:rendererReady'),
     setPreviewPostTarget: (postId: string | null) => ipcRenderer.invoke('app:setPreviewPostTarget', postId),
     triggerMenuAction: (action: string) => ipcRenderer.invoke('app:triggerMenuAction', action),
   },
diff --git a/src/main/shared/electronApi.ts b/src/main/shared/electronApi.ts
index ddba335..d00652f 100644
--- a/src/main/shared/electronApi.ts
+++ b/src/main/shared/electronApi.ts
@@ -567,6 +567,7 @@ export interface ElectronAPI {
     readProjectMetadata: (folderPath: string) => Promise<{ name?: string; description?: string; publicUrl?: string; mainLanguage?: string } | null>;
     getBlogmarkBookmarklet: () => Promise<string>;
     copyToClipboard: (text: string) => Promise<boolean>;
+    notifyRendererReady: () => Promise<boolean>;
     setPreviewPostTarget: (postId: string | null) => Promise<void>;
     triggerMenuAction: (action: string) => Promise<void>;
   };
diff --git a/src/renderer/App.tsx b/src/renderer/App.tsx
index fb3ef5a..ca526d8 100644
--- a/src/renderer/App.tsx
+++ b/src/renderer/App.tsx
@@ -1,10 +1,12 @@
-import React, { useEffect } from 'react';
+import React, { useEffect, useRef } from 'react';
 import { ActivityBar, Sidebar, Editor, StatusBar, Panel, TabBar, ToastContainer, showToast, ResizablePanel, WindowTitleBar } from './components';
 import { useAppStore, PostData, MediaData, TaskProgress } from './store';
 import { loadTabsForProject, saveTabsForProject } from './utils';
-import { openEntityTab, openSingletonToolTab } from './navigation/tabPolicy';
+import { openSingletonToolTab } from './navigation/tabPolicy';
 import { persistSiteValidationReport } from './navigation/siteValidationPersistence';
 import { executeActivityClick } from './navigation/activityExecution';
+import { handleBlogmarkCreatedEvent } from './navigation/blogmarkHandling';
+import { createDeferredEventGate } from './navigation/deferredEventGate';
 import { createAndFocusPost } from './navigation/postCreation';
 import { ensureRendererPicoThemeStylesheet, getRendererPicoTheme } from './utils/picoTheme';
 import { useI18n } from './i18n';
@@ -33,6 +35,25 @@ const App: React.FC = () => {
     openTab,
     restoreTabState,
   } = useAppStore();
+  const blogmarkEventGateRef = useRef(createDeferredEventGate<PostData>());
+
+  const processBlogmarkCreated = (created: PostData) => {
+    addPost(created);
+    const state = useAppStore.getState();
+    handleBlogmarkCreatedEvent(
+      {
+        activeView: state.activeView,
+        sidebarVisible: state.sidebarVisible,
+      },
+      created,
+      {
+        setActiveView: state.setActiveView,
+        toggleSidebar: state.toggleSidebar,
+        setSelectedPost: state.setSelectedPost,
+        openTab: state.openTab,
+      },
+    );
+  };
 
   // Load initial data
   useEffect(() => {
@@ -80,6 +101,9 @@ const App: React.FC = () => {
         console.error('Failed to load initial data:', error);
       } finally {
         setLoading(false);
+        setTimeout(() => {
+          blogmarkEventGateRef.current.markReady(processBlogmarkCreated);
+        }, 0);
       }
     };
 
@@ -216,28 +240,12 @@ const App: React.FC = () => {
 
     unsubscribers.push(
       window.electronAPI?.on('blogmark:created', (post: unknown) => {
-        const created = post as { id?: string } | null;
+        const created = post as PostData;
         if (!created?.id) {
           return;
         }
 
-        const state = useAppStore.getState();
-        executeActivityClick(
-          {
-            activeView: state.activeView,
-            sidebarVisible: state.sidebarVisible,
-            tabs: state.tabs,
-            activeTabId: state.activeTabId,
-          },
-          'posts',
-          {
-            setActiveView: state.setActiveView,
-            toggleSidebar: state.toggleSidebar,
-          },
-        );
-
-        state.setSelectedPost(created.id);
-        openEntityTab(state.openTab, 'post', created.id, 'preview');
+        blogmarkEventGateRef.current.push(created, processBlogmarkCreated);
       }) || (() => {})
     );
 
@@ -475,6 +483,10 @@ const App: React.FC = () => {
       }) || (() => {})
     );
 
+    void window.electronAPI?.app.notifyRendererReady?.().catch((error) => {
+      console.error('Failed to notify renderer readiness:', error);
+    });
+
     return () => {
       unsubscribers.forEach(unsub => unsub());
     };
diff --git a/src/renderer/navigation/blogmarkHandling.ts b/src/renderer/navigation/blogmarkHandling.ts
new file mode 100644
index 0000000..83faa3d
--- /dev/null
+++ b/src/renderer/navigation/blogmarkHandling.ts
@@ -0,0 +1,40 @@
+import { openEntityTab } from './tabPolicy';
+import type { SidebarView } from './sidebarViewRegistry';
+
+interface BlogmarkStateSnapshot {
+  activeView: SidebarView;
+  sidebarVisible: boolean;
+}
+
+interface BlogmarkCreatedPayload {
+  id?: string;
+}
+
+interface BlogmarkHandlers {
+  setActiveView: (view: SidebarView) => void;
+  toggleSidebar: () => void;
+  setSelectedPost: (id: string) => void;
+  openTab: (tab: { type: 'post'; id: string; isTransient: boolean }) => void;
+}
+
+export function handleBlogmarkCreatedEvent(
+  snapshot: BlogmarkStateSnapshot,
+  payload: BlogmarkCreatedPayload | null | undefined,
+  handlers: BlogmarkHandlers,
+): void {
+  const postId = typeof payload?.id === 'string' ? payload.id : '';
+  if (!postId) {
+    return;
+  }
+
+  if (snapshot.activeView !== 'posts') {
+    handlers.setActiveView('posts');
+  }
+
+  if (!snapshot.sidebarVisible) {
+    handlers.toggleSidebar();
+  }
+
+  handlers.setSelectedPost(postId);
+  openEntityTab(handlers.openTab, 'post', postId, 'preview');
+}
diff --git a/src/renderer/navigation/deferredEventGate.ts b/src/renderer/navigation/deferredEventGate.ts
new file mode 100644
index 0000000..205a93b
--- /dev/null
+++ b/src/renderer/navigation/deferredEventGate.ts
@@ -0,0 +1,35 @@
+export interface DeferredEventGate<T> {
+  push: (event: T, consume: (event: T) => void) => void;
+  markReady: (consume: (event: T) => void) => void;
+  isReady: () => boolean;
+}
+
+export function createDeferredEventGate<T>(): DeferredEventGate<T> {
+  let ready = false;
+  let queue: T[] = [];
+
+  return {
+    push: (event, consume) => {
+      if (ready) {
+        consume(event);
+        return;
+      }
+
+      queue.push(event);
+    },
+    markReady: (consume) => {
+      if (ready) {
+        return;
+      }
+
+      ready = true;
+      const queuedEvents = queue;
+      queue = [];
+
+      for (const event of queuedEvents) {
+        consume(event);
+      }
+    },
+    isReady: () => ready,
+  };
+}
diff --git a/tests/engine/mainStartup.test.ts b/tests/engine/mainStartup.test.ts
index d73fd29..e494e65 100644
--- a/tests/engine/mainStartup.test.ts
+++ b/tests/engine/mainStartup.test.ts
@@ -650,6 +650,7 @@ describe('main bootstrap preview behavior', () => {
 
   it('handles bds deep-link by creating a blogmark post with preferred category', async () => {
     const listeners = new Map<string, (...args: any[]) => void>();
+    const ipcHandlers = new Map<string, (...args: any[]) => any>();
     const mockApp = {
       name: 'bDS',
       whenReady: vi.fn(() => Promise.resolve()),
@@ -691,7 +692,9 @@ describe('main bootstrap preview behavior', () => {
       },
       ipcMain: {
         on: vi.fn(),
-        handle: vi.fn(),
+        handle: vi.fn((channel: string, handler: (...args: any[]) => any) => {
+          ipcHandlers.set(channel, handler);
+        }),
         removeHandler: vi.fn(),
       },
       protocol: {
@@ -794,9 +797,181 @@ describe('main bootstrap preview behavior', () => {
       }),
     );
 
+    const rendererReadyHandler = ipcHandlers.get('app:rendererReady');
+    await rendererReadyHandler?.();
+
     expect(windows[0]?.webContents.send).toHaveBeenCalledWith(
       'blogmark:created',
       expect.objectContaining({ id: 'new-post-id' }),
     );
   });
+
+  it('queues blogmark created event until renderer has finished loading', async () => {
+    const listeners = new Map<string, (...args: any[]) => void>();
+    const webContentsListeners = new Map<string, (...args: any[]) => void>();
+    const ipcHandlers = new Map<string, (...args: any[]) => any>();
+    const mockApp = {
+      name: 'bDS',
+      whenReady: vi.fn(() => Promise.resolve()),
+      on: vi.fn((event: string, callback: (...args: any[]) => void) => {
+        listeners.set(event, callback);
+      }),
+      quit: vi.fn(),
+      requestSingleInstanceLock: vi.fn(() => true),
+      setAsDefaultProtocolClient: vi.fn(() => true),
+    };
+
+    const windows: Array<{ webContents: { send: ReturnType<typeof vi.fn> } }> = [];
+    let rendererLoading = true;
+
+    class MockBrowserWindow {
+      static getAllWindows = vi.fn(() => windows as any);
+
+      loadURL = vi.fn();
+      loadFile = vi.fn();
+      on = vi.fn();
+      isDestroyed = vi.fn(() => false);
+      webContents = {
+        on: vi.fn((event: string, callback: (...args: any[]) => void) => {
+          webContentsListeners.set(event, callback);
+        }),
+        isLoadingMainFrame: vi.fn(() => rendererLoading),
+        send: vi.fn(),
+        openDevTools: vi.fn(),
+        toggleDevTools: vi.fn(),
+      };
+
+      constructor() {
+        windows.push(this as any);
+      }
+    }
+
+    vi.doMock('electron', () => ({
+      app: mockApp,
+      BrowserWindow: MockBrowserWindow,
+      Menu: {
+        buildFromTemplate: vi.fn(() => ({})),
+        setApplicationMenu: vi.fn(),
+      },
+      ipcMain: {
+        on: vi.fn(),
+        handle: vi.fn((channel: string, handler: (...args: any[]) => any) => {
+          ipcHandlers.set(channel, handler);
+        }),
+        removeHandler: vi.fn(),
+      },
+      protocol: {
+        registerSchemesAsPrivileged: vi.fn(),
+        handle: vi.fn(),
+      },
+      net: {
+        fetch: vi.fn(),
+      },
+      shell: {
+        openExternal: vi.fn(),
+        openPath: vi.fn(),
+      },
+    }));
+
+    class MockPreviewServer {
+      start = vi.fn().mockResolvedValue(4123);
+      stop = vi.fn().mockResolvedValue(undefined);
+      getBaseUrl = vi.fn(() => 'http://127.0.0.1:4123');
+    }
+
+    const createPost = vi.fn().mockResolvedValue({
+      id: 'queued-post-id',
+      title: 'Queued title',
+      content: '[Queued title](<https://example.com/>)',
+      categories: ['article'],
+    });
+
+    vi.doMock('../../src/main/engine/PreviewServer', () => ({
+      PreviewServer: MockPreviewServer,
+    }));
+
+    vi.doMock('../../src/main/engine/PostEngine', () => ({
+      getPostEngine: vi.fn(() => ({
+        getPost: vi.fn().mockResolvedValue(null),
+        createPost,
+      })),
+    }));
+
+    vi.doMock('../../src/main/engine/MetaEngine', () => ({
+      getMetaEngine: vi.fn(() => ({
+        getProjectMetadata: vi.fn().mockResolvedValue({ blogmarkCategory: 'article' }),
+      })),
+    }));
+
+    vi.doMock('../../src/main/database', () => ({
+      getDatabase: vi.fn(() => ({
+        initializeLocal: vi.fn().mockResolvedValue(undefined),
+        close: vi.fn().mockResolvedValue(undefined),
+        getLocal: vi.fn(() => ({
+          select: vi.fn(() => ({
+            from: vi.fn(() => ({
+              where: vi.fn(() => ({
+                get: vi.fn().mockResolvedValue(null),
+              })),
+            })),
+          })),
+        })),
+        getDataPaths: vi.fn(() => ({ database: '/tmp/mock.db' })),
+      })),
+    }));
+
+    vi.doMock('../../src/main/ipc', () => ({
+      registerIpcHandlers: vi.fn(),
+      registerChatHandlers: vi.fn(),
+      initializeChatHandlers: vi.fn(),
+      cleanupChatHandlers: vi.fn().mockResolvedValue(undefined),
+    }));
+
+    vi.doMock('../../src/main/database/schema', () => ({
+      media: {},
+    }));
+
+    vi.doMock('drizzle-orm', () => ({
+      eq: vi.fn(),
+    }));
+
+    vi.doMock('../../src/main/engine/MediaEngine', () => ({
+      getMediaEngine: vi.fn(() => ({
+        getThumbnailPaths: vi.fn().mockResolvedValue({ small: null }),
+      })),
+    }));
+
+    await import('../../src/main/main');
+    await new Promise((resolve) => setTimeout(resolve, 0));
+
+    const openUrl = listeners.get('open-url');
+    expect(openUrl).toBeTruthy();
+
+    const preventDefault = vi.fn();
+    openUrl?.({ preventDefault } as any, 'bds://new-post?title=Queued%20title&url=https%3A%2F%2Fexample.com%2F');
+    await new Promise((resolve) => setTimeout(resolve, 0));
+
+    expect(createPost).toHaveBeenCalledTimes(1);
+    expect(windows[0]?.webContents.send).not.toHaveBeenCalledWith(
+      'blogmark:created',
+      expect.anything(),
+    );
+
+    rendererLoading = false;
+    const didFinishLoad = webContentsListeners.get('did-finish-load');
+    didFinishLoad?.();
+
+    expect(windows[0]?.webContents.send).not.toHaveBeenCalledWith(
+      'blogmark:created',
+      expect.anything(),
+    );
+
+    const rendererReadyHandler = ipcHandlers.get('app:rendererReady');
+    await rendererReadyHandler?.();
+
+    expect(windows[0]?.webContents.send).toHaveBeenCalledWith(
+      'blogmark:created',
+      expect.objectContaining({ id: 'queued-post-id' }),
+    );
+  });
 });
diff --git a/tests/renderer/navigation/blogmarkHandling.test.ts b/tests/renderer/navigation/blogmarkHandling.test.ts
new file mode 100644
index 0000000..3131779
--- /dev/null
+++ b/tests/renderer/navigation/blogmarkHandling.test.ts
@@ -0,0 +1,60 @@
+import { describe, expect, it, vi } from 'vitest';
+import { handleBlogmarkCreatedEvent } from '../../../src/renderer/navigation/blogmarkHandling';
+
+describe('handleBlogmarkCreatedEvent', () => {
+  it('does not collapse sidebar when already in posts view', () => {
+    const setActiveView = vi.fn();
+    const toggleSidebar = vi.fn();
+    const setSelectedPost = vi.fn();
+    const openTab = vi.fn();
+
+    handleBlogmarkCreatedEvent(
+      {
+        activeView: 'posts',
+        sidebarVisible: true,
+      },
+      {
+        id: 'post-1',
+      },
+      {
+        setActiveView,
+        toggleSidebar,
+        setSelectedPost,
+        openTab,
+      },
+    );
+
+    expect(setActiveView).not.toHaveBeenCalled();
+    expect(toggleSidebar).not.toHaveBeenCalled();
+    expect(setSelectedPost).toHaveBeenCalledWith('post-1');
+    expect(openTab).toHaveBeenCalledTimes(1);
+  });
+
+  it('switches to posts view and opens sidebar when needed', () => {
+    const setActiveView = vi.fn();
+    const toggleSidebar = vi.fn();
+    const setSelectedPost = vi.fn();
+    const openTab = vi.fn();
+
+    handleBlogmarkCreatedEvent(
+      {
+        activeView: 'media',
+        sidebarVisible: false,
+      },
+      {
+        id: 'post-2',
+      },
+      {
+        setActiveView,
+        toggleSidebar,
+        setSelectedPost,
+        openTab,
+      },
+    );
+
+    expect(setActiveView).toHaveBeenCalledWith('posts');
+    expect(toggleSidebar).toHaveBeenCalledTimes(1);
+    expect(setSelectedPost).toHaveBeenCalledWith('post-2');
+    expect(openTab).toHaveBeenCalledTimes(1);
+  });
+});
diff --git a/tests/renderer/navigation/deferredEventGate.test.ts b/tests/renderer/navigation/deferredEventGate.test.ts
new file mode 100644
index 0000000..01f9def
--- /dev/null
+++ b/tests/renderer/navigation/deferredEventGate.test.ts
@@ -0,0 +1,31 @@
+import { describe, expect, it, vi } from 'vitest';
+import { createDeferredEventGate } from '../../../src/renderer/navigation/deferredEventGate';
+
+describe('createDeferredEventGate', () => {
+  it('queues events until marked ready', () => {
+    const gate = createDeferredEventGate<string>();
+    const consume = vi.fn();
+
+    gate.push('first', consume);
+    gate.push('second', consume);
+
+    expect(consume).not.toHaveBeenCalled();
+
+    gate.markReady(consume);
+
+    expect(consume).toHaveBeenCalledTimes(2);
+    expect(consume).toHaveBeenNthCalledWith(1, 'first');
+    expect(consume).toHaveBeenNthCalledWith(2, 'second');
+  });
+
+  it('consumes immediately after ready', () => {
+    const gate = createDeferredEventGate<string>();
+    const consume = vi.fn();
+
+    gate.markReady(consume);
+    gate.push('now', consume);
+
+    expect(consume).toHaveBeenCalledTimes(1);
+    expect(consume).toHaveBeenCalledWith('now');
+  });
+});
diff --git a/tests/setup.ts b/tests/setup.ts
index 78ac7a5..88b5601 100644
--- a/tests/setup.ts
+++ b/tests/setup.ts
@@ -130,6 +130,7 @@ Object.defineProperty(globalThis, 'window', {
         triggerMenuAction: vi.fn(),
         getBlogmarkBookmarklet: vi.fn(),
         copyToClipboard: vi.fn(),
+        notifyRendererReady: vi.fn(),
       },
       import: {
         selectAndAnalyze: vi.fn(),