AGENTS being pulled from subtree #18044
Description
What happened?
I was just working on a PR to home-manager. The agent's personality completely changed between sessions an hour apart. I asked why, and it cited this random file deep in the tree: tests/modules/programs/codex/AGENTS.md
I don't know what made it pick up that AGENTS file now and not in any other session. I thought it only considered AGENTS folders in pwd and above.
What did you expect to happen?
AGENTS files are consistently selected between sessions. Files in project root and higher are considered. AGENTS files in subfolders are only considered when operating on files within them.
Client information
- CLI Version: 0.26.0
- Git Commit: a380b42
- Session ID: a3fb9a22-b022-4ed9-89ca-2b657510624e
- Operating System: darwin v24.13.0
- Sandbox Environment: no sandbox
- Model Version: auto-gemini-2.5
- Memory Usage: 255.8 MB
- Terminal Name: ghostty 1.2.3
- Terminal Background: fix .env check #123
- Kitty Keyboard Protocol: Supported
Login information
No response
Anything else we need to know?
No response