feat(source2): push all latest files - device labeling, help system, proxy docs, database isolation fix

- Added DOKUMENTASI-FILTER-PER-SITE.md (site isolation docs)
- Fixed start-with-env.js to force-load .env.production
- Fixed MONGODB_URI hostname from mongodb-netify to mongodb.prod.proit.id
- Updated .gitignore to exclude sensitive scripts and credential files
- Minor UI and labeling improvements

backend/check_threats.js

@@ -0,0 +1,15 @@
+const mongoose = require('mongoose');
+require('dotenv').config({path: '../.env.local'});
+mongoose.connect(process.env.MONGODB_URI).then(async () => {
+  const db = mongoose.connection;
+  const threats = await db.collection('threats').countDocuments();
+  const events = await db.collection('events').countDocuments();
+  const highEvents = await db.collection('events').countDocuments({
+    $or: [
+      {severity: {$in: ['Critical', 'High']}}, 
+      {category_label: 'Cybersecurity'}
+    ]
+  });
+  console.log({threats, events, highEvents});
+  process.exit(0);
+}).catch(e => console.error(e));