Fix: Tilføj 'posted' status til tmodule_orders check constraint

- Database constraint tillod kun: draft, exported, sent, cancelled
- Code satte status til 'posted' efter e-conomic export
- Tilføjet 'posted' til check_status constraint
- Fixes: new row violates check constraint error

migrations/034_add_posted_status.sql

@@ -0,0 +1,10 @@
+-- Migration 034: Add 'posted' status to tmodule_orders check constraint
+-- Date: 2025-12-23
+-- Issue: e-conomic export sets status='posted' but constraint doesn't allow it
+
+-- Drop the old constraint
+ALTER TABLE tmodule_orders DROP CONSTRAINT IF EXISTS check_status;
+
+-- Add new constraint with 'posted' status included
+ALTER TABLE tmodule_orders ADD CONSTRAINT check_status 
+    CHECK (status IN ('draft', 'exported', 'posted', 'sent', 'cancelled'));