When a PR modifies .mcp.json, the checked-out working directory contains a
version that may differ from the base branch. Blindly setting
enableAllProjectMcpServers=true in that context auto-approves those MCP
servers without the user having reviewed them.
Fix: before calling setupClaudeCodeSettings, check whether .mcp.json changed
in the triggering PR using the GitHub REST API (pulls.listFiles). If it did,
pass mcpJsonChanged=true to suppress the enableAllProjectMcpServers=true
override. When .mcp.json is unmodified (the common case), behaviour is
unchanged.
- Add mcpJsonChanged parameter to setupClaudeCodeSettings
- Add PR file-list check in src/entrypoints/run.ts
- Update tests: update existing override test, add two new mcpJsonChanged=true tests