feat(companies): onboard co-operative unions and farms

They hold a TIN but no business licence, so there is no eTrade record to look
their registration up in. A checkbox on the first wizard step marks them, and
everything that assumed a trade licence bends around it:

- The company step replaces the eTrade lookup with typed registration details
  — name, region, zone, woreda, kebele, house number — required exactly because
  they are now on screen. applyEtradeSourcedFields skips the lookup rather than
  failing it, so what the customer sends is what is stored.
- No freight-forwarder role. Forwarding is licensed work, so the option is not
  offered, and the API refuses it at start-onboarding and at every later
  role-add rather than letting approval fail on a document they cannot produce.
- No per-role business-licence upload, client-side or in the completion gate.
- Their own document set (company_onboarding_documents_cooperative) merges on
  top of the nationality one, admin-managed like every other set. Nationality
  wins a fileKey collision so no slot renders twice, and the DARS paper is not
  injected into it — the set it merges onto already carries one.
- The owner is typed in full; with no eTrade manager on file the licence
  comparison reports "nothing to compare against", which backoffice now
  explains rather than leaving as a bare dash.

Stored as an attributes flag, not a column: everything it changes is
behavioural, and nothing queries or joins on it.

apps/edr-freight-api/src/modules/billing/documents/documents.module.ts

@@ -7,7 +7,9 @@ import { PdfRenderService } from "./pdf-render.service";
  * Standalone document infrastructure — generic HTML→PDF plus the shared
  * invoice/receipt renderer. Has no domain dependencies, so any module (billing,
  * warehouses, …) can import it to print invoices without coupling to the
- * billing payment graph.
+ * billing payment graph. StampSettingsService is @Global (see
+ * StampSettingsModule) so InvoiceDocumentService can inject it without this
+ * module declaring an explicit import.
  */
 @Module({
   providers: [PdfRenderService, InvoiceDocumentService],

apps/edr-freight-api/src/modules/billing/documents/invoice-document.service.ts

@@ -1,5 +1,6 @@
 import { Injectable } from "@nestjs/common";
 
+import { StampSettingsService } from "../../stamp-settings/stamp-settings.service";
 import { PdfRenderService } from "./pdf-render.service";
 import {
   PdfColor,
@@ -53,6 +54,13 @@ export interface InvoiceDocumentModel {
   totals: InvoiceDocumentTotal[];
   /** Override the round seal text; defaults from kind/status. */
   sealText?: string;
+  /**
+   * Company stamp image (data URL) to render instead of the plain text seal.
+   * Callers normally leave this unset — `InvoiceDocumentService.render()`
+   * fills it in from the single global stamp in StampSettingsService; set it
+   * explicitly only to override that default for one document.
+   */
+  stampImageUrl?: string | null;
 }
 
 /**
@@ -63,12 +71,21 @@ export interface InvoiceDocumentModel {
  */
 @Injectable()
 export class InvoiceDocumentService {
-  constructor(private readonly pdf: PdfRenderService) {}
+  constructor(
+    private readonly pdf: PdfRenderService,
+    private readonly stampSettings: StampSettingsService,
+  ) {}
 
   async render(
     model: InvoiceDocumentModel,
   ): Promise<{ filename: string; buffer: Buffer }> {
-    const html = this.buildHtml(model);
+    const stampImageUrl =
+      model.stampImageUrl !== undefined
+        ? model.stampImageUrl
+        : await this.stampSettings.getStampImageUrl();
+    const resolvedModel: InvoiceDocumentModel = { ...model, stampImageUrl };
+
+    const html = this.buildHtml(resolvedModel);
     const kindLabel = model.kind === "RECEIPT" ? "receipt" : "invoice";
     return {
       filename: `${this.safeFilename(model.documentNumber)}-${kindLabel}.pdf`,
@@ -77,7 +94,11 @@ export class InvoiceDocumentService {
         // Chromium-less fallback: draw a genuine styled invoice (header, seal,
         // summary grid, line-item table, totals) from the model — not a flat
         // plain-text dump — so it still reads as a proper invoice document.
-        fallback: () => this.buildFallbackPdf(model),
+        // ponytail: still draws the plain vector seal, not the uploaded stamp
+        // image — embedding a raster image needs a new PDF XObject primitive
+        // in styled-pdf.util.ts. Upgrade when the Chromium-less path needs to
+        // carry the real stamp too; today it's a rare degraded fallback.
+        fallback: () => this.buildFallbackPdf(resolvedModel),
       }),
     };
   }
@@ -218,6 +239,10 @@ export class InvoiceDocumentService {
     const showCategory = Boolean(model.categoryHeader);
     const sealText =
       model.sealText ?? (model.kind === "RECEIPT" || model.status === "PAID" ? "EDR PAID" : "EDR");
+    const sealMarkup = model.stampImageUrl
+      ? `<img src="${esc(model.stampImageUrl)}" alt="Company stamp" />`
+      : esc(sealText);
+    const sealClass = model.stampImageUrl ? "seal seal-image" : "seal";
 
     const summaryRows = model.summary
       .map((row) => `<div><span>${esc(row.label)}</span>${esc(row.value)}</div>`)
@@ -256,6 +281,8 @@ export class InvoiceDocumentService {
     .meta { text-align: right; font-size: 12px; color: #475569; }
     .meta strong { display: block; color: #0f172a; font-size: 17px; margin-top: 5px; }
     .seal { position: absolute; right: 28px; top: 118px; width: 116px; height: 116px; border: 4px double #0f766e; border-radius: 999px; color: #0f766e; display: flex; align-items: center; justify-content: center; text-align: center; font-weight: 800; font-size: 18px; transform: rotate(-14deg); opacity: .82; }
+    .seal.seal-image { border: none; border-radius: 0; opacity: 1; transform: none; }
+    .seal img { max-width: 100%; max-height: 100%; object-fit: contain; }
     .summary { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 28px; margin: 24px 150px 16px 0; font-size: 13px; }
     .summary div { border-bottom: 1px solid #e2e8f0; padding: 7px 0; }
     .summary span { color: #64748b; display: block; font-size: 11px; margin-bottom: 3px; }
@@ -283,7 +310,7 @@ export class InvoiceDocumentService {
         Issued: ${esc(date(model.issuedAt))}
       </div>
     </div>
-    <div class="seal">${esc(sealText)}</div>
+    <div class="${sealClass}">${sealMarkup}</div>
     <div class="summary">${summaryRows}</div>
     <table>
       <thead>