Add external import sources, work history, screening fields and Phase 1 docs

- New ExternalImportSource and ExternalWorkHistoryEntry models, controller and migrations
- Screening fields on external profile imports
- Admin and provider profile views, routes and workflow tests updated
- Phase 1 validation, route inventory, gap report template and roadmap docs
- Add the Google Sheets work-order parser tool (tools/google-sheets-wo-parser)

app/Http/Controllers/AdminController.php

@@ -5,6 +5,7 @@ namespace App\Http\Controllers;
 use App\Models\Attachment;
 use App\Models\AuditLog;
 use App\Models\Dispute;
+use App\Models\ExternalImportSource;
 use App\Models\ExternalProfileImport;
 use App\Models\JobPost;
 use App\Models\ModerationReport;
@@ -42,6 +43,11 @@ class AdminController extends Controller
                 ->latest()
                 ->limit(10)
                 ->get(),
+            'importSources' => ExternalImportSource::with('providerProfile.user', 'externalProfileImport', 'uploadedBy')
+                ->whereIn('review_status', ['needs_review', 'provider_reviewed'])
+                ->latest()
+                ->limit(10)
+                ->get(),
             'moderationReports' => ModerationReport::with('reporter', 'reportable')
                 ->whereIn('status', ['open', 'reviewing'])
                 ->latest()