feat: complete Epic 1 — team management & permission system

- Story 1.1: Permission enum, config, AuthorizesPermissions & HasWorkspaceScope traits, member→worker migration
- Story 1.2: Team page with member list, invitation system with queued email
- Story 1.3: Role assignment (Manager/Worker) and member removal with activity logging
- Story 1.4: Owner-only permission toggle matrix for Managers (manage team, view logs, configure portal)
- Story 1.5: Role-based access enforcement — Workers see only assigned declarations/clients, sidebar scoping
- Story 1.6: Workspace switcher dropdown for multi-workspace users with session-based switching
- 83 new/modified files, 182 tests passing with zero regressions

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/Feature/Declaration/MediaDownloadTest.php

@@ -80,7 +80,7 @@ test('re-downloading updates timestamp without creating duplicates', function ()
 test('download status is per-user in show endpoint', function () {
     [$user, $workspace, $declaration, $media] = setupDeclarationWithMedia();
     $otherUser = User::factory()->create();
-    $workspace->users()->attach($otherUser, ['role' => 'member']);
+    $workspace->users()->attach($otherUser, ['role' => 'manager']);
     session(['current_workspace_id' => $workspace->id]);
 
     MediaDownload::query()->create([