feat(certifications): member-facing /me view + docs

/me shows the signed-in member their own certifications (status badges
from the shared logic) and a read-only view of their effective
permissions. Sidebar gets a "My access" link. ARCHITECTURE documents the
module; HANDOFF pass-21 records the UX fixes (deployed) and the
code-complete-but-local certifications module.

components/app-sidebar.tsx

@@ -14,7 +14,7 @@ import {
   Menu, X, LayoutDashboard, ListChecks, FolderKanban, Settings2, Wrench,
   MessageSquare, Users, CreditCard, BookUser, Download, LogOut,
   Vote, ShieldAlert, ScrollText, LineChart, UserCircle, UserSearch,
-  MessagesSquare, SlidersHorizontal, ClipboardList, FileText, Award,
+  MessagesSquare, SlidersHorizontal, ClipboardList, FileText, Award, BadgeCheck,
 } from 'lucide-react'
 
 interface NavLinkProps {
@@ -135,6 +135,7 @@ export function AppSidebar({ member, roleName, taskBadge = 0, commsBadge = 0, pa
         <NavLink href="/contacts" label="Contacts" icon={BookUser} active={isActive('/contacts')} onClick={onNav} />
         <NavLink href="/my-forms" label="Forms" icon={FileText} active={isActive('/my-forms')} onClick={onNav} />
         <NavLink href="/profile" label="My profile" icon={UserCircle} active={isActive('/profile')} onClick={onNav} />
+        <NavLink href="/me" label="My access" icon={BadgeCheck} active={isActive('/me')} onClick={onNav} />
         {isAdmin && (
           <NavLink href="/recruitment" label="Recruitment" icon={UserSearch} active={isActive('/recruitment')} onClick={onNav} />
         )}