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/components/admin/admin-sections-browser.tsx

@@ -18,7 +18,6 @@ import {
   Inbox,
   ListChecks,
   Mail,
-  MailPlus,
   Paintbrush,
   ScrollText,
   Search,
@@ -87,12 +86,10 @@ const GROUPS: AdminGroup[] = [
           'residential access',
         ],
       },
-      {
-        href: 'invitations',
-        label: 'Invitations',
-        description: 'Send invitations, track pending invites, and resend or revoke them.',
-        icon: MailPlus,
-      },
+      // /admin/invitations merged into /admin/users (Active users +
+      // Invitations tabs) on 2026-05-21. The standalone tile was
+      // removed; reps still find the invitation flow via the Users
+      // tile's "Invitations" tab.
       {
         href: 'roles',
         label: 'Roles & Permissions',