fix: add env vars substitution support to mcp server config #2747
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Konippi
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Issue #, if available:
resolve #2746
Description of changes:
This PR adds environment variable substitution support to MCP server configurations in custom agents, allowing users to use
${env:VARIABLE_NAME}syntax in theenvsection of their MCP server configs.{ "mcpServers": { "database-server": { "command": "node", "args": ["server.js"], "env": { "DATABASE_URL": "${env:DB_URL}", "PORT": "${env:SERVER_PORT}", "API_KEY": "${env:SECRET_API_KEY}" } } } }By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.