feat(notes): add manifest validation CLI tool

Create mcp-manifest-validate package with CLI and programmatic API:
- Validate manifests against JSON Schema v0.1
- Test autodiscovery from domains (well-known URL + HTML link tags)
- Check command availability on PATH
- Semantic validation (config keys, template variables, transport)
- Colorized terminal output with detailed error reporting
- JSON output mode for CI/CD integration
- Programmatic API for library use

Includes schema/v0.1.json, CLI in bin/cli.js, and core logic in src/index.js

package.json

@@ -0,0 +1,39 @@
+{
+  "name": "mcp-manifest-validate",
+  "version": "0.1.0",
+  "description": "Validate mcp-manifest.json files and test autodiscovery from domains",
+  "type": "module",
+  "bin": {
+    "mcp-manifest-validate": "./bin/cli.js"
+  },
+  "main": "./src/index.js",
+  "exports": {
+    ".": "./src/index.js"
+  },
+  "files": [
+    "bin/",
+    "src/",
+    "schema/"
+  ],
+  "scripts": {
+    "test": "node --test src/*.test.js"
+  },
+  "keywords": [
+    "mcp",
+    "manifest",
+    "validate",
+    "model-context-protocol",
+    "autodiscovery"
+  ],
+  "author": "mcp-manifest",
+  "license": "CC0-1.0",
+  "homepage": "https://mcp-manifest.dev",
+  "repository": {
+    "type": "git",
+    "url": "https://git.marketally.com/mcp-manifest/validate"
+  },
+  "dependencies": {
+    "ajv": "^8.17.0",
+    "ajv-formats": "^3.0.0"
+  }
+}