feat(mcp): подготовить сервер и доступ к приёмке

backend/scripts/test-database-source-binding.mjs

@@ -0,0 +1,17 @@
+// Synthetic signatures/files only. Deliberately discard configured DB URLs,
+// environment preload hooks and application secrets, including during SQL suites.
+import { spawn } from 'node:child_process'
+import { createRequire } from 'node:module'
+import { fileURLToPath, pathToFileURL } from 'node:url'
+
+if (process.argv.length !== 2) throw Error('Source-binding synthetic runner takes no arguments')
+const require = createRequire(import.meta.url)
+const env = Object.fromEntries(['SystemRoot', 'WINDIR', 'TEMP', 'TMP', 'LANG', 'LC_ALL']
+  .filter(key => typeof process.env[key] === 'string').map(key => [key, process.env[key]]))
+const child = spawn(process.execPath, ['--import', pathToFileURL(require.resolve('tsx')).href, '--test',
+  fileURLToPath(new URL('../src/db/database-source-binding.test.ts', import.meta.url))], {
+  cwd: new URL('../', import.meta.url), env: { ...env, MMAPP_OWN_SOURCE_BINDING_SYNTHETIC: 'true' },
+  windowsHide: true, stdio: 'inherit',
+})
+child.once('error', () => { console.error('Source-binding synthetic child could not start'); process.exitCode = 1 })
+child.once('exit', code => { process.exitCode = code ?? 1 })