release: rename package @a2a/mcp → @a2amcp/mcp, bump to 0.1.1

The @a2a scope on npm is owned by a different account, so PUT against
the registry 404'd. Move to @a2amcp/mcp (scope we control) and bump the
version so the publish workflow has a fresh tag to push.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

README.md

@@ -1,4 +1,4 @@
-# @a2a/mcp
+# @a2amcp/mcp
 
 MCP gateway for a2acloud agents. It runs locally as a stdio MCP server and
 exposes deployed A2A agents as tools to Claude Code, Cursor, and other MCP
@@ -7,9 +7,9 @@ clients.
 ## Quickstart
 
 ```bash
-npx -y @a2a/mcp login
-npx -y @a2a/mcp add <agent-name>
-npx -y @a2a/mcp doctor
+npx -y @a2amcp/mcp login
+npx -y @a2amcp/mcp add <agent-name>
+npx -y @a2amcp/mcp doctor
 ```
 
 Add it to your MCP client config:
@@ -19,7 +19,7 @@ Add it to your MCP client config:
   "mcpServers": {
     "a2a": {
       "command": "npx",
-      "args": ["-y", "@a2a/mcp"]
+      "args": ["-y", "@a2amcp/mcp"]
     }
   }
 }