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/ProviderProfileController.php

@@ -12,7 +12,7 @@ class ProviderProfileController extends Controller
 {
     public function index(Request $request): View
     {
-        $profiles = ProviderProfile::with('user', 'externalImports', 'taxonomyTerms', 'attachments', 'ratings.user')
+        $profiles = ProviderProfile::with('user', 'externalImports.workHistoryEntries', 'taxonomyTerms', 'attachments', 'ratings.user')
             ->withAvg(['ratings as average_stars' => fn ($query) => $query->whereNotNull('stars')], 'stars')
             ->withCount('ratings');
 
@@ -73,7 +73,13 @@ class ProviderProfileController extends Controller
         abort_unless($request->user()->hasRole('provider'), 403);
 
         return view('providers.edit', [
-            'profile' => $request->user()->providerProfile?->load('attachments', 'externalImports.attachments', 'taxonomyTerms'),
+            'profile' => $request->user()->providerProfile?->load(
+                'attachments',
+                'externalImports.attachments',
+                'externalImports.workHistoryEntries',
+                'externalImportSources.externalProfileImport',
+                'taxonomyTerms',
+            ),
             'technicianLevels' => config('technician-levels'),
             'taxonomyTerms' => TaxonomyTerm::whereIn('type', ['work_category', 'work_specialty', 'skill', 'tool', 'certification'])
                 ->where('is_active', true)
@@ -142,6 +148,7 @@ class ProviderProfileController extends Controller
             'profile' => $provider->load(
                 'user',
                 'externalImports.attachments',
+                'externalImports.workHistoryEntries',
                 'taxonomyTerms',
                 'attachments',
                 'ratings.user',