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docs(tasks): condense background task prose

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The background-task change repeated its lifecycle design across implemented RFCs, package READMEs, JSDoc, test commentary, and model-visible schemas. That repetition obscured the contracts that maintainers must preserve and added avoidable prompt tokens.

Rewrite the implemented RFCs around the current design, keep authorization, exact-owner cleanup, wait/abort ordering, producer quiescence, and teardown-failure guarantees at their owning surfaces, and remove peer surveys, review history, control-flow narration, and emphatic restatement.

Shorten the task and subagent schema wording, synchronize the bilingual tool cookbook, and regenerate the config, service, RFC, tool, and replay snapshot derivatives. Runtime behavior is unchanged; test edits update prose-only assertions and descriptions.
This commit is contained in:
Tianyi Cui
2026-07-15 21:08:58 +08:00
parent 306b79fa2c
commit 8bb8ac8b3c
38 changed files with 548 additions and 1156 deletions
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16
packages/bash/tool-bash/src/render.ts
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@@ -15,7 +15,7 @@ function streamText(output: CollectedOutput): string {
/**
* Shape one finished run into the text the model sees: stdout, then a marked
* stderr section, then exit-status markers. Non-zero exits are REPORTED, not
* stderr section, then exit-status markers. Non-zero exits are reported, not
* errored — the model decides how to react; only infrastructure failures
* (spawn errors, aborts) surface as isError results.
* @param result - the completed foreground run from the executor.
@@ -40,23 +40,15 @@ export function renderResult(
if (body.length === 0) body = '(no output)'
const markers: string[] = []
// The sandbox marker precedes the exit-status markers so `[exit code: N]`
// stays the LAST line (exitStatus() anchors its parse there). Denial is a
// reported fact like timeout: the model decides how to react.
// Keep the exit marker last because parseExitStatus anchors there.
if (result.sandbox?.denied) {
markers.push(`[sandbox: file access denied under ${result.sandbox.mode} mode]`)
// The same-turn nudge lives at the decision point: only when this
// composition advertises the fields (a lever is never hinted that the
// schema does not offer), and inside the sandbox marker family so the
// exit-code marker stays the last line.
// Hint only when the composition exposes escalation, before the final exit marker.
if (escalationModes.length > 0) {
markers.push('[sandbox: escalation available — retry this exact command once with sandbox_permissions (the narrowest wider mode that suffices) + justification; the approval prompt asks the user]')
}
}
// Timeout is reported independently of how the process actually ended: a
// command can trap SIGTERM and exit 0 after our timer fired (e.g.
// `trap "exit 0" TERM; sleep 60`), giving timedOut:true / exitCode:0 /
// signal:null — the model must still see that the command was cut short.
// A command may trap SIGTERM and exit 0 after timeout; still report interruption.
if (result.timedOut) markers.push(`[timed out after ${result.timeoutMs}ms]`)
if (result.signal !== null) {
markers.push(`[killed by signal: ${result.signal}]`)