feat(cli): add manifest generator from existing MCP configs

Add mcp-manifest-generate CLI tool to reverse-engineer manifests from Claude Code settings.json. Infers install methods from command patterns (npx→npm, uvx→pip, .exe→dotnet-tool). Converts --flag args to typed config entries (--api-key→secret). Supports --probe flag to run MCP handshake for real server name/version. Add interactive --init wizard mode. Update schema with additional validation rules. Add comprehensive CLI help and examples to README

package.json

@@ -4,11 +4,13 @@
   "description": "Validate mcp-manifest.json files and test autodiscovery from domains",
   "type": "module",
   "bin": {
-    "mcp-manifest-validate": "./bin/cli.js"
+    "mcp-manifest-validate": "./bin/cli.js",
+    "mcp-manifest-generate": "./bin/generate.js"
   },
   "main": "./src/index.js",
   "exports": {
-    ".": "./src/index.js"
+    ".": "./src/index.js",
+    "./generate": "./src/generate.js"
   },
   "files": [
     "bin/",