fix(prospecting): fix scan-jobs batch endpoints and add job tracking

- Reorder routes: batch endpoints before /{prospect_id} to fix FastAPI
  route matching (was parsing "batch" as prospect_id → 422)
- Add scan job tracking via stats_service.create_job/complete_job so
  the scan-jobs table gets populated after each batch run
- Add contact scrape batch endpoint (POST /contacts/batch) with
  get_pending_contact_scrape query
- Fix scan-jobs.js: explicit route map instead of naive replace
- Normalize domain_name on create/update (strip protocol, www, slash)
- Add domain_name to ProspectUpdate schema
- Add proposal for contact scraper enum + regex fixes

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/modules/prospecting/templates/prospecting/admin/scan-jobs.html

@@ -29,6 +29,11 @@
             <span x-html="$icon('chart-bar', 'w-4 h-4 mr-2')"></span>
             Performance Scan
         </button>
+        <button type="button" @click="startBatchJob('contact_scrape')"
+                class="inline-flex items-center px-4 py-2 text-sm font-medium leading-5 text-white transition-colors duration-150 bg-purple-600 border border-transparent rounded-lg hover:bg-purple-700 focus:outline-none">
+            <span x-html="$icon('mail', 'w-4 h-4 mr-2')"></span>
+            Contact Scrape
+        </button>
         <button type="button" @click="startBatchJob('score_compute')"
                 class="inline-flex items-center px-4 py-2 text-sm font-medium leading-5 text-white transition-colors duration-150 bg-red-600 border border-transparent rounded-lg hover:bg-red-700 focus:outline-none">
             <span x-html="$icon('cursor-click', 'w-4 h-4 mr-2')"></span>