feat(uat-batch): Groups F + G + H — DocsHub/signing + admin consolidation + email

F27–F29, G30, G31, H32, H33 from the 2026-05-21 plan.

Shipped now:
  F28  Past-milestones expandable history. The Past strip on the
       Interest overview becomes an <Accordion> — each row collapses
       to the same one-line summary as before, expands to render the
       full <MilestoneSection> (steps list, sub-status, inline doc
       actions). Reuses the existing MilestoneSection so no new
       per-milestone rendering needs to be maintained.
  F29  Watchers configurable at document creation time. The unified
       create-document wizard gets a Watchers section with a
       multi-select checkbox list backed by /api/v1/admin/users/picker.
       Selected user ids are sent in the `watchers` array on the POST
       (replacing the prior hardcoded `[]`). UI matches the
       post-creation WatchersCard so reps see the same identity rows
       regardless of entry point.
  G30  /admin/invitations merged into /admin/users. The Users page
       now wraps the existing UserList + InvitationsManager in a
       Tabs control (Active users / Invitations). The standalone
       /admin/invitations route returns a redirect to the merged page
       for bookmark back-compat. Removed nav catalog entry +
       admin-sections-browser tile; extended the Users catalog
       keywords with "invitations / pending invites / onboarding"
       so command-K search still lands on the right surface.
  G31  /admin/ai picks up the berth-PDF-parser section + a "planned
       AI surfaces" placeholder. Berth PDF parser remains
       env-configured today; the page now documents it so admins
       don't hunt for the controls. Closes the "where do I configure
       AI?" loop.
  H32  Email settings explainer panel above the SMTP cards. Spells
       out why noreply + sales have separate credentials and which
       workflows ship from each mailbox. Existing field titles
       gained the "(noreply)" suffix so the model maps cleanly.
  H33  Supplemental-info-request email rebuilt to use the shared
       branded shell (logo + blurred overhead background + max-
       width 600 table layout) instead of the prior plain-HTML
       page. Per-port branding (logo / primary color / background /
       header / footer) flows from getPortBrandingConfig. CTA
       button picks up the port's primary color.

Already shipped (verified pre-shipped):
  F27  DocumentsHub root view already hides the breadcrumb via
       `selectedFolderId !== undefined` conditional.

Verified: tsc clean, vitest 1454/1454.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/lib/services/search-nav-catalog.ts

@@ -167,7 +167,17 @@ export const NAV_CATALOG: NavCatalogEntry[] = [
     href: '/:portSlug/admin/users',
     label: 'Users & roles',
     category: 'admin',
-    keywords: ['accounts', 'permissions', 'invites', 'team', 'staff', 'roles'],
+    keywords: [
+      'accounts',
+      'permissions',
+      'invites',
+      'invitations',
+      'pending invites',
+      'onboarding',
+      'team',
+      'staff',
+      'roles',
+    ],
     requires: 'admin.manage_users',
   },
   {
@@ -395,13 +405,10 @@ export const NAV_CATALOG: NavCatalogEntry[] = [
     keywords: ['roles', 'permissions', 'access control', 'rbac'],
     requires: 'admin.manage_users',
   },
-  {
-    href: '/:portSlug/admin/invitations',
-    label: 'Invitations',
-    category: 'admin',
-    keywords: ['invite', 'pending invites', 'onboarding'],
-    requires: 'admin.manage_users',
-  },
+  // /admin/invitations was merged into /admin/users on 2026-05-21 — the
+  // standalone catalog entry would route to the redirect stub. Reps
+  // searching for "invite" still land on the right surface via the
+  // /admin/users keyword list (extended below).
 ];
 
 /** Substitute `:portSlug` placeholder for the current port. */