viyatb-oai
6862b9c745
## Summary
- adds first-class filesystem policy entries for deny-read glob patterns
- parses config such as :project_roots { "**/*.env" = "none" } into
pattern entries
- enforces deny-read patterns in direct read/list helpers
- fails closed for sandbox execution until platform backends enforce
glob patterns in #18096
- preserves split filesystem policy in turn context only when it cannot
be reconstructed from legacy sandbox policy
## Stack
1. This PR - glob deny-read policy/config/direct-tool support
2. #18096 - macOS and Linux sandbox enforcement
3. #17740 - managed deny-read requirements
## Verification
- just fmt
- cargo check -p codex-core -p codex-sandboxing --tests
---------
Co-authored-by: Codex <noreply@openai.com>
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