feat: Report Deleted Code Session Files

[danny-avila]

Summary

• report persisted input paths removed during sandbox execution through an optional deleted_files response field
• propagate deletion metadata through blocking, stateful, and selected-workspace native programmatic responses
• reconcile against complete bounded filesystem scans, including capped subtrees and reserved runtime filenames
• preserve read-only infrastructure inputs and clear stale stateful priming only for proven writable deletions

Compatibility

The field is additive and omitted for unchanged sessions and incomplete scans. Existing clients continue to receive the current response shape.

Paired consumer: LibreChat-AI/agents#545. Either PR is rolling-deploy safe first; merging this producer first makes the feature active as soon as the consumer ships.

Tests

• bun test api/src/walker.test.ts (67 passed)
• focused stateful workspace tests
• selected-workspace native programmatic tests (14 passed)
• focused blocking-poll propagation tests
• API and @librechat/code builds
• GitHub Actions validation matrix

[danny-avila]

@codex review

Please review the current PR head 97d6331. Confirm that this exact commit is the reviewed commit and ignore findings that apply only to earlier heads.

[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-14T19:43:17.720869Z	b31c942	Manual request

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 97d633171a

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[danny-avila]

@codex review

Please review the current PR head 0ea6cfb. Confirm that this exact commit is the reviewed commit and ignore findings that apply only to earlier heads.

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 0ea6cfb86e

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[danny-avila]

@codex review

Please review the current PR head 1d078904c31128f310e58bd9d652f91b3357491a. Confirm that this exact commit is the reviewed commit and ignore findings that apply only to earlier heads.

[danny-avila]

@codex review

Correction to the immediately preceding request: please review the current PR head 1d07890. Confirm that this exact commit is the reviewed commit and ignore findings that apply only to earlier heads.

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 1d078900e7

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[danny-avila]

@codex review

Please review the current PR head b31c942. Confirm that this exact commit is the reviewed commit and ignore findings that apply only to earlier heads.

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. 🚀

Reviewed commit: b31c942a37

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