> Add TypeScript types to this function and handle null input

> Refactor this to use Array.reduce instead of the for loop

> Install zod and create a form validation schema for user registration:
  - Email: required, valid format
  - Password: 8+ characters, 1 uppercase, 1 number
  - Confirm password: must match password field
  Use the same project structure as src/lib/validators.ts

@workspace /explain the authentication flow from login to session management
@workspace /fix the memory leak in #file:src/services/worker.ts
@workspace Create a new API route following the pattern in #file:app/api/users/route.ts
@workspace Find all places where we use dangerouslySetInnerHTML

@vscode How do I create a tree view that shows database tables?
@vscode Write a command that opens a terminal and runs npm run dev

@terminal Why did the build fail?
@terminal Summarize the test failures

> Add rate limiting to the API in src/middleware/rate-limit.ts
  1. Read the existing middleware to understand the pattern
  2. Create a rate limiter using the existing Redis client in src/lib/redis.ts
  3. Apply it to the teams API endpoint at src/app/api/teams/
  4. Add a test in src/__tests__/middleware/rate-limit.test.ts
  5. Run `npm test -- rate-limit` to verify

> Create a new API endpoint following the same pattern as src/app/api/users/route.ts.
  Same auth middleware, same error format, same response structure.
  Name the endpoint src/app/api/teams/route.ts.

> Add a search bar to the Dashboard:
  1. Read src/app/dashboard/page.tsx to see current structure
  2. Create src/components/SearchBar.tsx using shadcn Input component
  3. Add debounced search (300ms) using useDebouncedCallback from use-debounce
  4. Wire it to the existing search API at src/lib/api/search.ts
  5. Add loading state and empty state
  6. Run `npm run typecheck`

> Production is logging "Cannot read property 'id' of null" in the
  user profile page.

  1. Read src/app/profile/page.tsx
  2. Find every place where `.id` is accessed
  3. Identify which could be null/undefined
  4. Add null checks or optional chaining
  5. Add an error boundary for graceful failures

> @workspace /tests Generate tests for the function at
  src/lib/payment/calculate-total.ts

  Include tests for:
  - Normal case with 3 items
  - Empty cart (0 items)
  - Single item
  - Negative quantity (should throw)
  - Discount code application
  - Tax calculation for different regions

> Review this PR description and check if the code in
  src/pull/123/ matches the described changes.
  Flag any discrepancies between the PR description and actual code.

> This GitHub issue describes a bug: #456
  Read the issue, find the relevant code, propose a fix,
  and draft a PR description.

> @workspace Make it better   ← Bad

> @workspace Apply consistent error handling to all API routes.
  Use the format from src/lib/api/error-handler.ts   ← Good

> How does auth work?   ← Copilot guesses

> @workspace How does auth work?   ← Copilot reads your code