Merge remote-tracking branch 'origin/codex/package-readme-limitations-audit-20260712' into codex/model-experience-readmes-20260712
# Conflicts: # docs/cookbook/adding-a-package.md # docs/rfc/INDEX.md # package.json # packages/AGENTS.md # packages/bash/bash-sandbox/README.md # packages/sandbox/sandbox-local/README.md # packages/sandbox/sandbox/README.md # packages/session-persistence/session-persistence-sqlite/README.md # packages/support/acp-snapshot/README.md # packages/ui/app-boot/README.md # packages/ui/user-approval/README.md # packages/workflow/tool-workflow/README.md
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@@ -22,3 +22,11 @@ Consumers: [`@deepseek-ai/dsh-bash-sandbox`](../../bash/bash-sandbox/); see [`ex
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| Context surface | What the model sees | Token effect |
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|---|---|---|
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| Sandbox result facts, indirectly | This provider adds no prompt or tool. It supplies the selected enforcement and denial dialect to `dsh-bash-sandbox`, which can become a denial marker or sandbox-unavailable error in the bash result. Runner selection and profiles are not shown. | Zero direct tokens; only a conditional small fact or error reaches context through the bash consumer. |
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## Known Limitations and Deferred Work
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- **Windows has no runner** — `win32` fails closed with `SANDBOX_UNAVAILABLE`; an AppContainer-family backend is deferred.
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- **Landlock may be partial** — older supported kernel ABIs confine only the access classes they expose, reported as `enforcement: 'partial'` rather than overstated as full.
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- **Seatbelt depends on deprecated `sandbox-exec`** — macOS still ships it, but this provider cannot replace or probe that private policy engine if Apple removes it.
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- **Runner selection is cached for the provider lifetime** — installing, removing, or repairing a runner requires reloading the plugin before selection changes.
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- **`runnerCommand` is an operator assertion** — a configured custom runner skips functional probes and is assumed to implement the bwrap-shaped profile honestly.
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@@ -15,3 +15,10 @@ Implementations: [`@deepseek-ai/dsh-sandbox-local`](../sandbox-local/) (Linux: `
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| Context surface | What the model sees | Token effect |
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|---|---|---|
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| None directly | This seam registers no prompt, schema, or message. A consumer may expose configured mode, enforcement, denial, or `SANDBOX_UNAVAILABLE` facts in its own guidance or result. | Zero direct tokens. Confinement changes model-visible text only through the consuming capability. |
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## Known Limitations and Deferred Work
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- **File effects are the whole policy vocabulary** — the seam expresses no network, process, syscall, device, or credential restrictions.
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- **Same-world confinement only** — containers, microVMs, and remote execution require replacing capability implementations rather than adding a provider here.
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- **Denial reporting is a stderr dialect** — the seam returns backend signatures instead of a typed runtime denial channel, so consumers that need classification must infer it from the child process's output.
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- **One provider per context** — composing different sandbox mechanisms simultaneously requires a provider-level ladder or separate Cordis contexts; callers choose policy per call, not backend identity.
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