feat: add packaging and validation coverage

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

tests/shared/workspace.test.ts

@@ -0,0 +1,34 @@
+import { describe, expect, test } from 'bun:test';
+
+import { createWorkspaceSeed } from '@shared/domain/workspace';
+
+describe('workspace seed', () => {
+  test('starts empty and seeds the built-in orchestration patterns with a shared timestamp', () => {
+    const workspace = createWorkspaceSeed();
+
+    expect(workspace.projects).toEqual([]);
+    expect(workspace.sessions).toEqual([]);
+    expect(workspace.selectedProjectId).toBeUndefined();
+    expect(workspace.selectedPatternId).toBeUndefined();
+    expect(workspace.selectedSessionId).toBeUndefined();
+
+    expect(workspace.patterns.map((pattern) => pattern.mode)).toEqual([
+      'single',
+      'sequential',
+      'concurrent',
+      'handoff',
+      'group-chat',
+      'magentic',
+    ]);
+
+    for (const pattern of workspace.patterns) {
+      expect(pattern.createdAt).toBe(workspace.lastUpdatedAt);
+      expect(pattern.updatedAt).toBe(workspace.lastUpdatedAt);
+    }
+
+    const magentic = workspace.patterns.find((pattern) => pattern.mode === 'magentic');
+
+    expect(magentic?.availability).toBe('unavailable');
+    expect(magentic?.unavailabilityReason).toContain('unsupported');
+  });
+});