feat: add n8n serve node and harden remote access

- Add the n8n community node package with credentials, command mapping, direct serve TCP client, and browser-cli protocol crypto helpers.

- Cover Ed25519 signing, canonical JSON, PQ transport encryption, request mapping, and security behavior with unit tests.

- Harden serve-http with per-address rate limiting, an 8 MB request body cap, and clear warnings when binding plain HTTP beyond loopback.

- Stop one-shot --key overrides from being persisted automatically; document explicit remote trust and keep key-management behind the keys policy tier.

- Make HTML-to-Markdown conversion safer by bounding tree depth and dropping unsafe link/image URL schemes.

- Bump package and extension release metadata to 0.16.3.

n8n-nodes-browser-cli/tsconfig.json

@@ -0,0 +1,19 @@
+{
+  "compilerOptions": {
+    "target": "ES2021",
+    "module": "CommonJS",
+    "moduleResolution": "Node",
+    "lib": ["ES2021"],
+    "outDir": "dist",
+    "rootDir": ".",
+    "strict": true,
+    "esModuleInterop": true,
+    "declaration": true,
+    "sourceMap": true,
+    "skipLibCheck": true,
+    "noUnusedLocals": true,
+    "forceConsistentCasingInFileNames": true
+  },
+  "include": ["credentials/**/*.ts", "nodes/**/*.ts"],
+  "exclude": ["node_modules", "dist", "test"]
+}