feat: phase 5 refactor

TODO.md

@@ -217,8 +217,8 @@ Pure tab-policy helpers that decide:
 - [x] Keep special cases explicit (e.g., tab ID transforms such as git-diff commit/file parsing).
 
 ## Phase 5 — Menu/Event Harmonization
-- Route menu-driven view/tab actions through the same behavior layer where applicable.
+- [x] Route menu-driven view/tab actions through the same behavior layer where applicable.
-- Reduce drift between keyboard/menu/toolbar interactions.
+- [x] Reduce drift between keyboard/menu/toolbar interactions.
 
 ## Phase 6 — Cleanup + Exception Review
 - Reassess every exception in this file and decide keep/remove.
@@ -259,4 +259,6 @@ Pure tab-policy helpers that decide:
 - [x] Phase 3 completion slice: centralized `chat` and `import` tab-open specs and migrated sidebar call sites.
 - [x] Phase 3 completion slice: centralized `git-diff` file/commit ID/spec/open helpers and reused shared parsing in `TabBar`.
 - [x] Phase 4 complete: introduced `editorRouting` registry/resolver and migrated `Editor` to declarative route->view rendering.
-- [ ] Next implementation slice: Phase 5 (menu/event harmonization).
+- [x] Phase 5 complete: introduced shared activity action executor and reused it in `ActivityBar` and menu view handlers.
+- [x] Phase 5 complete: `menu:viewPosts` and `menu:viewMedia` now follow the same action pipeline as activity-bar clicks.
+- [ ] Next implementation slice: Phase 6 (cleanup + exception review).

src/renderer/App.tsx

@@ -4,6 +4,7 @@ import { useAppStore, PostData, MediaData, TaskProgress } from './store';
 import { loadTabsForProject, saveTabsForProject } from './utils';
 import { openSingletonToolTab } from './navigation/tabPolicy';
 import { persistSiteValidationReport } from './navigation/siteValidationPersistence';
+import { executeActivityClick } from './navigation/activityExecution';
 import { ensureRendererPicoThemeStylesheet, getRendererPicoTheme } from './utils/picoTheme';
 import { useI18n } from './i18n';
 import './App.css';
@@ -216,13 +217,39 @@ const App: React.FC = () => {
 
     unsubscribers.push(
       window.electronAPI?.on('menu:viewPosts', () => {
-        setActiveView('posts');
+        const state = useAppStore.getState();
+        executeActivityClick(
+          {
+            activeView: state.activeView,
+            sidebarVisible: state.sidebarVisible,
+            tabs: state.tabs,
+            activeTabId: state.activeTabId,
+          },
+          'posts',
+          {
+            setActiveView: state.setActiveView,
+            toggleSidebar: state.toggleSidebar,
+          },
+        );
       }) || (() => {})
     );
 
     unsubscribers.push(
       window.electronAPI?.on('menu:viewMedia', () => {
-        setActiveView('media');
+        const state = useAppStore.getState();
+        executeActivityClick(
+          {
+            activeView: state.activeView,
+            sidebarVisible: state.sidebarVisible,
+            tabs: state.tabs,
+            activeTabId: state.activeTabId,
+          },
+          'media',
+          {
+            setActiveView: state.setActiveView,
+            toggleSidebar: state.toggleSidebar,
+          },
+        );
       }) || (() => {})
     );
 

src/renderer/components/ActivityBar/ActivityBar.tsx

@@ -2,12 +2,12 @@ import React from 'react';
 import { useAppStore } from '../../store';
 import { useI18n } from '../../i18n';
 import {
-  getActivityClickActions,
   getActivityConfig,
   isActivityActive,
   type ActivityId,
   type ActivitySnapshot,
 } from '../../navigation/activityBehavior';
+import { executeActivityClick as runActivityClick } from '../../navigation/activityExecution';
 import './ActivityBar.css';
 
 // Simple SVG icons
@@ -74,15 +74,10 @@ export const ActivityBar: React.FC = () => {
   };
 
   const executeActivityClick = (activityId: ActivityId) => {
-    const actions = getActivityClickActions(snapshot, activityId);
+    runActivityClick(snapshot, activityId, {
-
+      toggleSidebar,
-    for (const action of actions) {
+      setActiveView,
-      if (action.type === 'toggleSidebar') {
+    });
-        toggleSidebar();
-      } else if (action.type === 'setActiveView') {
-        setActiveView(action.view);
-      }
-    }
   };
 
   const getTitle = (activityId: ActivityId) => `${t(getActivityConfig(activityId).labelKey)} ${t('activity.toggleHint')}`;

src/renderer/navigation/activityExecution.ts

@@ -0,0 +1,34 @@
+import {
+  getActivityClickActions,
+  type ActivityAction,
+  type ActivityId,
+  type ActivitySnapshot,
+} from './activityBehavior';
+import type { SidebarView } from './sidebarViewRegistry';
+
+export interface ActivityExecutionHandlers {
+  setActiveView: (view: SidebarView) => void;
+  toggleSidebar: () => void;
+}
+
+export function executeActivityClickActions(
+  actions: ActivityAction[],
+  handlers: ActivityExecutionHandlers,
+): void {
+  for (const action of actions) {
+    if (action.type === 'toggleSidebar') {
+      handlers.toggleSidebar();
+      continue;
+    }
+
+    handlers.setActiveView(action.view);
+  }
+}
+
+export function executeActivityClick(
+  snapshot: ActivitySnapshot,
+  activityId: ActivityId,
+  handlers: ActivityExecutionHandlers,
+): void {
+  executeActivityClickActions(getActivityClickActions(snapshot, activityId), handlers);
+}

tests/renderer/navigation/activityExecution.test.ts

@@ -0,0 +1,41 @@
+import { describe, expect, it, vi } from 'vitest';
+import {
+  executeActivityClick,
+  executeActivityClickActions,
+} from '../../../src/renderer/navigation/activityExecution';
+import type { ActivityAction, ActivitySnapshot } from '../../../src/renderer/navigation/activityBehavior';
+
+const snapshot: ActivitySnapshot = {
+  activeView: 'media',
+  sidebarVisible: false,
+  tabs: [],
+  activeTabId: null,
+};
+
+describe('activityExecution', () => {
+  it('applies action descriptors in order', () => {
+    const actions: ActivityAction[] = [
+      { type: 'setActiveView', view: 'posts' },
+      { type: 'toggleSidebar' },
+    ];
+
+    const setActiveView = vi.fn();
+    const toggleSidebar = vi.fn();
+
+    executeActivityClickActions(actions, { setActiveView, toggleSidebar });
+
+    expect(setActiveView).toHaveBeenCalledWith('posts');
+    expect(toggleSidebar).toHaveBeenCalledTimes(1);
+    expect(setActiveView.mock.invocationCallOrder[0]).toBeLessThan(toggleSidebar.mock.invocationCallOrder[0]);
+  });
+
+  it('executes canonical click behavior from activity snapshot', () => {
+    const setActiveView = vi.fn();
+    const toggleSidebar = vi.fn();
+
+    executeActivityClick(snapshot, 'posts', { setActiveView, toggleSidebar });
+
+    expect(setActiveView).toHaveBeenCalledWith('posts');
+    expect(toggleSidebar).toHaveBeenCalledTimes(1);
+  });
+});