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

test/test-remote-db-connection.js

@@ -0,0 +1,38 @@
+const { Client } = require('ssh2');
+
+const SSH = {
+  host: '103.185.47.52',
+  port: 2222,
+  username: 'adminbackend',
+  password: 'htEo7x6LsBQiEHHH',
+  readyTimeout: 60000
+};
+
+const remoteJs = `
+const net = require('net');
+const s = net.createConnection(27017, 'mongodb.prod.proit.id', () => {
+  console.log('SUCCESS: Connected to mongodb.prod.proit.id from remote server!');
+  s.destroy();
+}).on('error', e => {
+  console.error('FAILED: ' + e.message);
+});
+`;
+
+const conn = new Client();
+conn.on('ready', () => {
+  const b64 = Buffer.from(remoteJs).toString('base64');
+  conn.exec(`echo "${b64}" | base64 -d | node`, (err, stream) => {
+    if (err) {
+      console.error(err);
+      conn.end();
+      return;
+    }
+    let out = '';
+    stream.on('data', d => out += d);
+    stream.on('close', () => {
+      console.log('Result from remote:');
+      console.log(out.trim());
+      conn.end();
+    });
+  });
+}).on('error', console.error).connect(SSH);