dsh-bash grows the per-call policy carrier: BashExecRequest.sandboxMode
(request-optional, spec required-but-nullable — the owner pattern; resolve()
is the one explicit defaulting step) and the BashExecutor.sandboxMode
capability fact (undefined in the base class — composition truth the tool
layer can read). dsh-bash-local carries the field verbatim and confines
nothing.
dsh-bash-sandbox extends LocalBashExecutor and hands ctx.sandbox the exact
argv it is about to spawn. A denial is a RESULT FACT (the command RAN;
result.sandbox.denied is orthogonal to exitCode/signal), classified
conservatively against the wrap own dialect; a RUNNER failure outranks
denial — foreground re-throws the structured SANDBOX_UNAVAILABLE, a settled
background task stamps sandbox.runnerFailed — so a broken sandbox never
reads as a failing command and the command never runs unconfined.
dsh-tool-bash renders the markers and teaches the model not to retry around
a policy denial; escalation and per-session switching are staged follow-ups.
One shared ctx.tasks registry (branded <kind>-N ids, owner-fenced
read/kill/wait/list, attachSurface misconfiguration fence, reported-flag
notice dedup, atomic register) + dsh-tool-tasks (task_output/task_list/
task_kill, completion-notice injection, background prompt habit).
Producers opt in via their own enableRunInBackground config: bash
(stream kind; seam slimmed to resolve/run/start returning a BashProcess
handle, bash_output/bash_kill deleted) and subagent (final-output kind;
done settles after run.dispose()). Owner disposal drains tasks through
the new awaited ctx.agents.onCleanup seam in the loop's disposal chain.
Both RFCs moved to implemented/; docs, catalogs, snapshots re-pinned.
Reverses item 3 of the tighten-hook-protocol-contract RFC per review:
a persistence log is written for future readers, and hook wall-clock
runtime is audit signal (which hook made a turn slow). runHook keeps
its injected now clock and RunHookResult wrapper, the bridges pass the
measured duration through HookResultRecord, the snapshot normalizer
keeps its replay scrub, and the hook fixtures carry the field again.
The RFC records the reversal; the other three prunes stand.
Implement the tighten-hook-protocol-contract RFC (moved to implemented/):
- HookDialect narrows to 'claude' | 'codex': the 'native' variant had zero
producers (native plugins on the seams write no hook/* provenance), and the
dialect is defined as the bridge that ran the hook.
- HookOutput.suppressOutput is gone: the codec parsed it and every path
discarded it with no warn and no deferral — hook stdout never enters a
transcript, so there is nothing to suppress.
- hook/result.durationMs is gone: durable timing telemetry with no reader
that the snapshot normalizer had to scrub as replay noise. With no duration
to measure, runHook loses its injected now clock and the single-field
RunHookResult wrapper — it returns the HookOutput directly. The committed
hook fixtures had the field stripped mechanically (field-only diff); the
stdout goldens never carried it.
- The bridges' double-defaulted defaultTimeoutMs config knob is replaced by
one reference-default constant, DEFAULT_HOOK_TIMEOUT_MS, exported from the
lib's runner and applied inside runHook; per-hook timeoutSec stays the
override surface.
- The hook/result semantics move into the lib that declares the event:
HookResultRecord now carries the decoded HookOutput and appendHookResult
derives the decision string (decision ?? stop-on-continue:false ?? pass)
and the 500-char stderrSummary truncation; both bridges delete their
byte-identical private copies. The snapshot suite passes against the
existing goldens, proving the derived values are unchanged.
- Rider: BLOCKING_EXIT_CODE is codec-internal again (zero importers).
Amend the hook-protocol-lib and hook-snapshot-matrix RFCs to the new facts,
update the lib/bridge READMEs and the session.md event tables, and retarget
the affected unit tests (including new lib-level coverage of the derivation
rules).
The reference schemas key the `hookSpecificOutput` block by `hookEventName`, so
a block naming a DIFFERENT event than the one firing is malformed — a hook
emitting `hookSpecificOutput.hookEventName: "PreToolUse"` on a `Stop` event must
not deny the Stop. The codec surfaced `hookEventName` for a bridge to compare but
never enforced the discard, so both bridges pushed every parsed output into the
merge unconditionally.
parseHookOutput now takes an optional `expectedEventName`; when the block's
`hookEventName` names a different event, its event-scoped fields
(permissionDecision/permissionDecisionReason/additionalContext/updatedInput) are
discarded (the discriminator is still surfaced for the log, and the
event-agnostic top-level decision/continue/etc. are unaffected). runHook threads
it via RunHookOptions.expectedEventName; a caller that omits it opts out.
Codex review finding on the bridges PR (PR-F); fixed here on the codec that owns
the fold and knows field provenance, then flows down to both bridges.
Codex's PR-E review found three protocol-fidelity blockers + two doc gaps, all
verified against ~/repos/refs:
- (A) Top-level `decision` accepted allow/deny/ask, but both reference schemas
reserve those for hookSpecificOutput.permissionDecision — the legacy top-level
decision is approve/block ONLY. Split topLevelDecisionOf (approve/block) from
permissionDecisionOf (allow/deny/ask), so an out-of-band {"decision":"deny"} is
now invalid and ignored instead of becoming a real blocking decision.
- (A) hookSpecificOutput was parsed without its hookEventName discriminator.
HookOutput now surfaces hookEventName so a bridge can discard a block whose
claimed event doesn't match the firing one (the schemas key the block by event).
- (A) runHook discarded raw stdout. HookOutput now carries `stdout` (trimmed,
verbatim) so a bridge can reproduce CC's plain-stdout rendering / Codex's
plain-stdout-as-additionalContext behavior.
- (B) hook/* SessionEventMap variants were only named in prose; added a payload/role
table to core-data-structures/session.md (a maintained catalog surface).
- (B) Removed PR-stack-position references (PR-F / "future bridge packages") from a
test comment and the RFC, per the current-state-wording rule.
New codec tests: top-level allow/deny/ask invalid+ignored, hookEventName capture,
raw stdout preserved on plain + JSON + empty stdout. 51 tests, per-file 100%.
Tianyi Cui
Dudu-0223
Yichen Jiang
kingwl