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/middleware_verification_test.js

@@ -0,0 +1,28 @@
+// test/middleware_verification_test.js
+const fs = require('fs');
+const path = require('path');
+const assert = require('assert');
+
+const ROOT = path.join(__dirname, '..');
+
+console.log('=== Running TDD Middleware Verification Test ===');
+
+try {
+  // 1. Verify src/middleware.ts exists
+  const middlewarePath = path.join(ROOT, 'src', 'middleware.ts');
+  const exists = fs.existsSync(middlewarePath);
+  assert.ok(exists, 'src/middleware.ts must exist');
+  console.log('✓ src/middleware.ts exists');
+
+  // 2. Verify it exports 'middleware' function
+  const content = fs.readFileSync(middlewarePath, 'utf8');
+  assert.ok(content.includes('export function middleware'), 'src/middleware.ts must export function middleware');
+  assert.ok(!content.includes('export function proxy'), 'src/middleware.ts must NOT export function proxy');
+  console.log('✓ src/middleware.ts exports function middleware correctly');
+
+  console.log('=== ALL TESTS PASSED ===');
+  process.exit(0);
+} catch (err) {
+  console.error('✗ TEST FAILED:', err.message);
+  process.exit(1);
+}