wip: first run of implementation

tests/engine/agentic/capabilities/registry.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect, it } from 'vitest';
+import { CapabilityRegistryService } from '../../../../src/main/agentic/capabilities/registry';
+
+describe('CapabilityRegistryService', () => {
+  it('returns per-surface capability differences', () => {
+    const registry = new CapabilityRegistryService();
+
+    const tabCapabilities = registry.getSnapshot({ surface: 'tab' });
+    const sidebarCapabilities = registry.getSnapshot({ surface: 'sidebar' });
+
+    expect(tabCapabilities.widgets).toContain('tabs');
+    expect(sidebarCapabilities.widgets).toContain('tabs');
+    expect(tabCapabilities.actions).toContain('toggleSidebar');
+    expect(sidebarCapabilities.actions).toContain('toggleAssistantSidebar');
+    expect(tabCapabilities.actions).not.toContain('toggleAssistantSidebar');
+  });
+
+  it('omits disabled capabilities from active lists', () => {
+    const registry = new CapabilityRegistryService({
+      disabledActions: ['openSettings'],
+      disabledWidgets: ['chart'],
+      disabledTools: ['view_image'],
+    });
+
+    const snapshot = registry.getSnapshot({ surface: 'tab' });
+
+    expect(snapshot.actions).not.toContain('openSettings');
+    expect(snapshot.widgets).not.toContain('chart');
+    expect(snapshot.tools).not.toContain('view_image');
+    expect(snapshot.disabled).toEqual(expect.arrayContaining(['action:openSettings', 'widget:chart', 'tool:view_image']));
+  });
+});