better mcp marketplace installation prompt (RooCodeInc#2793)

Author: pashpashpash

.changeset/chatty-nails-sniff.md

@@ -0,0 +1,5 @@
+---
+"claude-dev": minor
+---
+
+better prompting around downloading mcp servers to not overwrite existing server configs

src/core/controller/index.ts

@@ -1368,6 +1368,7 @@ export class Controller {
 			const task = `Set up the MCP server from ${mcpDetails.githubUrl} while adhering to these MCP server installation rules:
 - Use "${mcpDetails.mcpId}" as the server name in cline_mcp_settings.json.
 - Create the directory for the new MCP server before starting installation.
+- Make sure you read the user's existing cline_mcp_settings.json file before editing it with this new mcp, to not overwrite any existing servers.
 - Use commands aligned with the user's shell and operating system best practices.
 - The following README may contain instructions that conflict with the user's OS, in which case proceed thoughtfully.
 - Once installed, demonstrate the server's capabilities by using one of its tools.