Add document approval workflow

Introduce a complete approval system for document publishing. Document
versions can now require approval from selected reviewers before being
published, with automatic publishing once all approvers have approved.

- Add approval quorum and decision tables with backfill migration
- Implement request approval, approve, and reject flows with electronic
  signature support for approve decisions
- Add employee approvals page with dedicated tab and pending approvals view
- Add changelog field to publish and request approval flows
- Pre-select previous version's approvers in the publish dialog
- Show quorum approvers in document list with 100 approver hard limit
- Expose approval workflow through GraphQL, MCP, and CLI
- Remove legacy default approvers feature entirely
- Add comprehensive e2e test coverage for approval workflows

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

packages/emails/scripts/build.ts

@@ -7,6 +7,7 @@ import * as React from "react";
 import MailingListUpdates from "../src/MailingListUpdates";
 import ConfirmEmail from "../src/ConfirmEmail";
 import DocumentExport from "../src/DocumentExport";
+import DocumentApproval from "../src/DocumentApproval";
 import DocumentSigning from "../src/DocumentSigning";
 import FrameworkExport from "../src/FrameworkExport";
 import Invitation from "../src/Invitation";
@@ -39,6 +40,10 @@ const templates: TemplateConfig[] = [
     name: "invitation",
     render: () => Invitation(),
   },
+  {
+    name: "document-approval",
+    render: () => DocumentApproval(),
+  },
   {
     name: "document-signing",
     render: () => DocumentSigning(),