Phase 2 of the quote-to-close funnel slice. Six /employees routes in
apps/hq/src/api.ts (GET requireAuth for the picker; POST/PATCH/deactivate/
reactivate/password owner-only, acting as the signed-in user); Employees
page (table + add/edit/reset-password forms, email immutable on edit,
count shown, no truncation); owner-only nav item beside Document Template;
typed client fns in hq-web api.ts. 6 new route tests (192 total).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>