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>

apps/console/src/routes/documentsRoutes.ts

@@ -40,6 +40,14 @@ const documentTabs = (prefix: string) => {
           import("#/pages/organizations/documents/controls/DocumentControlsPageLoader"),
       ),
     },
+    {
+      path: `${prefix}approvals`,
+      Fallback: LinkCardSkeleton,
+      Component: lazy(
+        () =>
+          import("#/pages/organizations/documents/approvals/DocumentApprovalsPageLoader"),
+      ),
+    },
     {
       path: `${prefix}signatures`,
       Fallback: LinkCardSkeleton,
@@ -61,6 +69,9 @@ export const documentsRoutes = [
     path: "documents/:documentId",
     Fallback: PageSkeleton,
     Component: lazy(() => import("#/pages/organizations/documents/DocumentLayoutLoader")),
-    children: [...documentTabs(""), ...documentTabs("versions/:versionId/")],
+    children: [
+      ...documentTabs(""),
+      ...documentTabs("versions/:versionId/"),
+    ],
   },
 ] satisfies AppRoute[];