Permission prompt appears when reading ~/.config/opencode/AGENTS.md

[scarf005]

Problem

When the agent tries to read ~/.config/opencode/AGENTS.md, OpenCode asks for external_directory permission (Access external directory ~/.config/opencode).

This path is OpenCode's own config directory and is already used as a first-class instruction source, so the extra external-directory prompt is unexpected and interrupts normal flows.

Reproduction

1. Put an AGENTS.md in ~/.config/opencode/.
2. Start a session in any project.
3. Trigger a workflow where the model reads instruction files (for example asking it to investigate and read AGENTS files).
4. Observe permission request: Access external directory ~/.config/opencode.

Expected

Reading instruction files from OpenCode-owned config paths should not trigger external_directory prompts.

Actual

A permission prompt appears for ~/.config/opencode.

[github-actions]

This issue may be related to or context for the following discussions:

• [FEATURE]: Support .opencode/AGENTS.md for environment-specific instructions #11454: Support .opencode/AGENTS.md for environment-specific instructions
• Main agent often asking to access external_directory which is the one we are in (worktrees) #13346: Main agent often asking to access external_directory which is the one we are in (worktrees)