feat(web): add public commission request entrypoint

docs/product-engineering/request-lifecycle-flows.md

@@ -59,3 +59,15 @@ Key files:
 Key files:
 - `apps/admin/src/app/commissions/page.tsx`
 - `packages/db/src/commissions.ts`
+
+## 6. Public Commission Request Submission
+
+1. Visitor opens `/{locale}/commissions` and submits request form.
+2. Server action validates input through shared schema.
+3. Existing customer is reused by email (and marked recurring) or a new customer is created.
+4. A new commission is created in `new` status and linked to the resolved customer.
+
+Key files:
+- `apps/web/src/app/[locale]/commissions/page.tsx`
+- `packages/content/src/commissions.ts`
+- `packages/db/src/commissions.ts`