- Add createOrder(plate, template, letterText) to frontend api/orders.ts
- Create data/templates.ts with 6 Swedish letter templates (Komplimang,
Jag vill köpa din bil, Tips / servicebehov, Synpunkter på körbeteende,
Tuta / frustration, Fritt meddelande) with pre-filled body text
- Rewrite ComposePage.vue with full compose flow:
- Template selector dropdown (Fritt meddelande selected by default)
- Textarea with 1000-char limit and live character counter
- Inline A4 letter preview with plate, body, and GDPR Art. 14 footer
- 'Skicka brev (49 kr)' submit button, disabled when empty
- On success: redirects to /orders; on error: shows error message
- Shows error with back link if no plate in route query
- Add 12 Vitest tests for ComposePage (template fill, char counter, submit
validation, createOrder call, navigation, null template for Fritt meddelande)
- Add 8 Playwright E2E tests (auth guard, no-plate error, template selection,
textarea edit, submit button state, order creation, preview content)
