azure-sdk-java-mcp, prepare environment only when there are error message on missing dev env (#45959)

* prepare environment only when there are error messages complaning missing dev env

* update codeowner

* Update eng/tools/mcp/azure-sdk-java-mcp/src/index.ts

Co-authored-by: Copilot <[email protected]>

---------

Co-authored-by: Copilot <[email protected]>

Author: haolingdong-msft

.github/CODEOWNERS

@@ -934,6 +934,7 @@
 /.github/CODEOWNERS                                           @joshfree @srnagar @anuchandy @conniey @lmolkova @jonathangiles @alzimmermsft @Azure/azure-sdk-eng @Azure/azure-java-sdk
 /.github/workflows/                                           @Azure/azure-sdk-eng
 /.config/1espt/                                               @benbp @weshaggard
+/eng/tools/mcp/                                               @weidongxu-microsoft @haolingdong-msft @XiaofeiCao @samvaity
 
 # Removing owners for this file to not require codeowner approval for changes to them given they are shared with project
 /eng/versioning/version_client.txt

.github/copilot-instructions.md

@@ -26,7 +26,6 @@ The Azure SDK for Java repository contains client libraries for Azure services,
 
 ACTION: Use azure-sdk-java-mcp sdk tools to generate the SDK.
 ACTION: Use azure-sdk-java-mcp sdk tools to build the SDK.
-ACTION: Don't prepare environment before synchronize TypeSpec source or generate SDK as if the synchronization or generation fail complaining missing environment, the tool will ask for preparing environment.
 
 ## Behavior
 

eng/tools/mcp/azure-sdk-java-mcp/src/index.ts

@@ -224,7 +224,7 @@ server.registerTool(
     "prepare_java_sdk_environment",
     {
         description:
-            "Prepare the development environment required for Java SDK generation. This includes setting up Node.js/npm, Java/Maven, and TypeSpec tools.",
+            "Prepare the development environment required for Java SDK generation when there are errors about missing development environments. The tool returns a cookbook with step-by-step instructions to install necessary environments including Node.js/npm, Java/Maven, and TypeSpec tools.",
         inputSchema: {
             cwd: z
                 .string()