feat: add Semaphore Sync job

Fetches Semaphore project inventory via Bearer auth, parses the
Ansible INI format to extract hostnames, and sets semaphore=1/0
on matching instances.

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

server/db.js

@@ -125,6 +125,10 @@ function seedJobs() {
   upsert.run('patchmon_sync', 'Patchmon Sync',
     'Syncs Patchmon host registration status to instances by matching hostnames.',
     0, 60, JSON.stringify({ api_url: 'http://patchmon:3000/api/v1/api/hosts', api_token: '' }));
+
+  upsert.run('semaphore_sync', 'Semaphore Sync',
+    'Syncs Semaphore inventory membership to instances by matching hostnames.',
+    0, 60, JSON.stringify({ api_url: 'http://semaphore:3000/api/project/1/inventory/1', api_token: '' }));
 }
 
 // ── Queries ───────────────────────────────────────────────────────────────────