fix: use official MCP schema URL and add VS Code settings for schema validation

.vscode/settings.json

@@ -0,0 +1,8 @@
+{
+  "json.schemas": [
+    {
+      "fileMatch": ["server.json"],
+      "url": "https://raw.githubusercontent.com/modelcontextprotocol/specification/main/schema/2024-11-05/schema.json"
+    }
+  ]
+}

server.json

@@ -1,8 +1,8 @@
 {
-  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
+  "$schema": "https://raw.githubusercontent.com/modelcontextprotocol/specification/main/schema/2024-11-05/schema.json",
   "name": "io.github.masdevid/mt5-quant",
   "title": "MT5-Quant",
-  "description": "MCP server for MetaTrader 5 strategy development on macOS/Linux. 43 tools to compile MQL5 Expert Advisors, run backtests, analyze deals, and optimize parameters — no Windows required.",
+  "description": "MCP server for MT5 strategy development. Compile, backtest, analyze MQL5 EAs on macOS/Linux.",
   "repository": {
     "url": "https://github.com/masdevid/mt5-quant",
     "source": "github"
@@ -11,7 +11,7 @@
   "packages": [
     {
       "registryType": "mcpb",
-      "identifier": "https://github.com/masdevid/mt5-quant/releases/download/v1.0.0/mt5-quant-macos-arm64.tar.gz",
+      "identifier": "https://github.com/masdevid/mt5-quant/releases/download/v1.0.0/mcp-mt5-quant-macos-arm64.tar.gz",
       "fileSha256": "5d647e44efa32ab9a1b8e16139a3a0e4a58408ce5993cc0bf14d551184124fbb",
       "transport": {
         "type": "stdio"