docs: remove stale e2e command references from CLAUDE.md

Removed lines 28-29 which listed ghost E2E commands (npm run e2e, npm run e2e:headed). The repo has no E2E files, no playwright.config.ts, no e2e/ directory, and no e2e script in package.json.

Resolves: PRI-1147

Co-authored-by: Chris Farhood <chris@farhood.org>
Co-authored-by: Paperclip <noreply@paperclip.ing>

CLAUDE.md

@@ -25,8 +25,6 @@ npm run format:check # Prettier check
 npm test           # vitest run
 npm run test:watch # vitest watch mode
 npx vitest run src/api/polaris.test.ts  # run a single test file
-npm run e2e        # Playwright E2E tests
-npm run e2e:headed # Playwright headed mode
 ```
 
 All tests and `tsc` must pass before committing.