Add MCP server for AI agents

Expose webshare_search, webshare_get_link, and webshare_login_check over
stdio via the Model Context Protocol SDK. Document client configuration.

package.json

@@ -1,20 +1,26 @@
 {
   "name": "webshare-api",
   "version": "1.0.0",
-  "description": "Webshare.cz HTTP API: Torznab indexer + fake qBittorrent client + stream redirect for Sonarr/Radarr",
+  "description": "Webshare.cz HTTP API: Torznab indexer, fake qBittorrent client, and MCP server for AI agents",
   "main": "src/index.js",
+  "bin": {
+    "webshare-mcp": "src/mcp.js"
+  },
   "scripts": {
     "start": "node src/index.js",
+    "mcp": "node src/mcp.js",
     "test": "jest --coverage --runInBand"
   },
   "engines": {
     "node": ">=18"
   },
   "dependencies": {
+    "@modelcontextprotocol/sdk": "^1.30.0",
     "axios": "^1.7.0",
     "express": "^4.19.0",
     "multer": "^1.4.5-lts.1",
-    "xml2js": "^0.6.0"
+    "xml2js": "^0.6.0",
+    "zod": "^4.4.3"
   },
   "devDependencies": {
     "jest": "^30.4.2",