fix(pty): retain backend cleanup failures

This commit is contained in:
Tianyi Cui
2026-07-23 00:59:16 +08:00
parent be20804684
commit 7f0f70ce3c
12 changed files with 100 additions and 25 deletions

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@@ -841,7 +841,7 @@ list(owner: Agent): PtySessionSnapshot[]
Types: [Agent](../core-data-structures/core.md) · [PtyBackend](../core-data-structures/pty.md) · [PtyReadRequest](../core-data-structures/pty.md) · [PtyReadResult](../core-data-structures/pty.md) · [PtySendOperation](../core-data-structures/pty.md) · [PtySendRequest](../core-data-structures/pty.md) · [PtySessionId](../core-data-structures/pty.md) · [PtySessionSnapshot](../core-data-structures/pty.md) · [PtySignal](../core-data-structures/pty.md) · [PtySignalResult](../core-data-structures/pty.md) · [PtySpawnRequest](../core-data-structures/pty.md) · [PtySpawnResult](../core-data-structures/pty.md)
Source: [`packages/pty/pty/src/index.ts:102`](../../packages/pty/pty/src/index.ts)
Source: [`packages/pty/pty/src/index.ts:104`](../../packages/pty/pty/src/index.ts)
## `ctx.sandbox` — `SandboxProvider` (abstract seam)

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@@ -22,14 +22,14 @@ type PtySessionStatus =
## Backend and live session
A backend owns how one registered type starts and detects readiness. `PtyService` publishes the returned session only after setup succeeds, then owns id authorization and cleanup. A backend session owns terminal state and captured-resource quiescence.
A backend owns how one registered type starts and detects readiness. `PtyService` publishes the returned session only after setup succeeds, then owns id authorization and cleanup. A backend that cannot clean partial startup resources rejects with `PtyBackendCleanupError`, allowing disposal to retain the cleanup failure without replacing the caller's cancellation reason. A backend session owns terminal state and captured-resource quiescence.
```ts type-equiv
/** Replaceable provider for one PTY session type. */
interface PtyBackend {
/** Stable type selected by {@link PtySpawnRequest.type}. */
readonly type: string
/** Create an unpublished session or reject after cleaning partial resources. */
/** Create an unpublished session or reject after cleaning partial resources; cleanup failure uses {@link PtyBackendCleanupError}. */
spawn(spec: PtyBackendSpawnSpec): Promise<PtyBackendSession>
}
```