feat: add task.spec.ts (task + issue comment flow), keep milestone data

- task.spec.ts: login → create project → create milestone → create task
  → create issue → add comment → verify → logout (no cleanup)
- milestone.spec.ts: remove cleanup step, keep project/milestone for inspection

tests/milestone.spec.ts

@@ -135,30 +135,7 @@ test.describe('Milestone Editor', () => {
     expect(hasMilestone).toBe(true);
     console.log('✅ Milestone verified in UI');
 
-    // Step 6: Cleanup — delete the project we created
-    console.log('🧹 Cleaning up — deleting project...');
-    await page.click('a:has-text("📁 Projects")');
-    await page.waitForLoadState('networkidle');
-    await page.waitForSelector(`.project-card:has-text("${projectName}")`, { timeout: 10000 });
-    await page.click(`.project-card:has-text("${projectName}")`);
-    await page.waitForLoadState('networkidle');
-    await page.waitForTimeout(1000);
-
-    const deleteBtn = page.locator('button:has-text("Delete")');
-    if (await deleteBtn.isVisible().catch(() => false)) {
-      page.on('dialog', async dialog => {
-        const match = dialog.message().match(/Type the project name "(.*)" to confirm/);
-        if (match) {
-          await dialog.accept(match[1]);
-        } else {
-          await dialog.accept();
-        }
-      });
-      await deleteBtn.click();
-      await page.waitForTimeout(2000);
-      console.log('✅ Project cleaned up');
-    }
-
+    // Note: intentionally NOT deleting the project/milestone — leave for inspection
     console.log('🎉 All milestone tests passed!');
   });
 });