The 50ms budget raced external-process spawn on cold CI runners: cancel
could fire before yes produced output, so the builtin tail flushed an
empty ring buffer (0 lines instead of 5, Linux x64 modern). 750ms keeps
the post-cancel drain scenario while outlasting spawn latency.
The context refresh captured the run-start model, so mid-run switches into or out of cursor-agent (retry fallback, prewalk, plan-yolo) sent the wrong tool set. Resolve supplemental tools against this.#state.model each call.
Fixes#5650
Forwarded the session xd registry into Cursor provider tool contexts.
Routed Cursor MCP execution through the mounted registry fallback and added regression coverage for built-in devices and external MCP tools.
Fixes#5650
Print-mode assistant-error/aborted exit, RPC pi.shutdown() and stdin-EOF
shutdowns, and the extension command-context shutdown() called
process.exit() before (or racing) session.dispose(), skipping the bounded
browser reaper (releaseTabsForOwner) installed in dispose(). An OMP-owned
Chromium could survive the parent and reparent to PID 1.
Route all four graceful paths through the idempotent, promise-memoized
session.dispose() and await it before the final exit. The RPC
performShutdown no longer emits session_shutdown directly (dispose() emits
it), avoiding a double emit.
Fixes#5643
A dropped stream that emitted toolcall_start/delta but never toolcall_end
leaves an incomplete toolCall block in content. The prior guard bailed on
any toolCall block, so the outer loop dispatched empty or partially
parsed arguments instead of retrying the transport failure.
Track streamed tool-call ids (toolcall_start/delta) alongside completed
ones (toolcall_end): a call streamed but never completed is incomplete.
reclassifyEmptyToolUseStop now reclassifies unless a usable (atomic or
completed) tool call remains, stripping incomplete blocks first. Atomic
deliveries (single done/end(result) message, e.g. Cursor) emit no
granular events and stay usable.
Fixes#5600
Streams finalized via end(result) with no terminal done/error event fall
through to the trailing-result branch, which returned response.result()
unchanged. An empty toolUse turn completing that way stayed a silent
success and never retried. Apply the same
retainCompletedToolCalls/recoverTransientErrorToolTurn/
reclassifyEmptyToolUseStop chain to the trailing branch.
Fixes#5600
A provider stream that closes after the thinking block but before the
tool call JSON is emitted finalizes with stopReason=toolUse and zero
toolCall content blocks. The loop treated this as a successful turn:
dispatched no tools, rendered an empty tool widget, and never retried.
reclassifyEmptyToolUseStop stamps such a turn as stopReason=error with
the Transient classifier bit set explicitly, so AgentSession's standard
retry-with-backoff path fires regardless of message-text matching.
Fixes#5600
- Added the `xd://` virtual device protocol (`internal-urls/xd-protocol.ts`, `tools/xdev.ts`): tools declaring `loadMode: "discoverable"` are unmounted from the request tools array and driven via `read xd://` (list/docs+schema) and `write xd://<tool>` (execute), gated by the `tools.xdev` setting (default on) and inlined into the system prompt.
- Merged the `irc`, `job`, and `launch` tools into a single `hub` tool (`tools/hub/`, `async/job-manager.ts`): messaging keeps `send`/`inbox`/`list`, job control maps to `wait`/`cancel`/`jobs`, process supervision keeps `start`/`logs`/`stop`/`restart`/`describe` with `ps`, and the unified `wait` races background jobs against peer messages; SDK `IrcTool`/`JobTool`/`LaunchTool` are replaced by `HubTool`.
- Removed the hidden `resolve` tool in favor of the `xd://resolve`/`xd://reject`/`xd://propose` resolution devices, auto-including `write` whenever a deferrable tool or plan mode is present.
- Removed the BM25 tool-discovery system: the `search_tool_bm25` tool, the `tool-discovery` module, the `tools.discoveryMode`/`mcp.discoveryMode`/`mcp.discoveryDefaultServers`/`tools.essentialOverride` settings, per-tool MCP selection, and the `mcp_tool_selection` message type.
- Unified tool presentation on `ToolLoadMode` (`essential`|`discoverable`), replacing the custom-tool `xdev?: boolean` opt-out; custom, extension, MCP, RPC host, image-generation, and TTS tools now default to `discoverable`, and added a `satisfies` predicate to `SoftToolRequirement`.
- Removed the standalone `ssh` command tool and `ssh/ssh-executor` (the `ssh://` read/write/search protocol stays), and made `--tools` address hidden built-ins.
- Updated collab-web to render `xd://` dispatches and `hub` op families, dropped the `search_tool_bm25`/`ssh`/`report-finding` renderers, refreshed tool docs and prompts, and migrated the affected tests and changelogs.
The interrupt-clobber branch in executeToolCalls replaced a tool's real
result with the "Skipped due to queued user message" placeholder whenever
an interrupt fired, the tool's own signal aborted, and the result was an
error. It ignored whether tool.execute() actually completed, so steering
while a tool was in flight could discard a genuine error result (e.g. a
command exiting non-zero) that the tool had already produced.
Gate the clobber on !completedToolExecution so a tool that ran to
completion keeps its real result; only tools cut off before returning are
reported as skipped. Align the aborted telemetry status the same way.
Fixes#4752
- Disabled the eval watchdog when timeout is explicitly zero.
- Classified session deadline aborts as TimeoutError while preserving their message.
- Documented and tested both timeout contracts.
Fixes#5250
- Normalized completed image_generation_call results into assistant image blocks.
- Persisted image bytes through the session blob store and rendered them in live, replay, ACP, proxy, telemetry, and HTML paths.
- Added response normalization, persistence, and TUI rendering regressions.
Fixes#4768
- Added `tui.scrollbackRebuild` configuration with interactive startup/controller wiring to apply `setScrollbackRebuild`.
- Exposed prewalk session state in `SegmentContext` and rendered a dedicated prewalk segment/icon in the status line.
- Added divergence-aware TUI full-paint logic that enables scrollback erase-and-replay rebuilds for non-multiplexer divergence cases.
- Updated rendering and streaming tests to verify rebuild behavior (`3J`) and eliminate stale marker expectations under drift scenarios.
- Added `warning` field to `CompactionEntry` and `CompactionSummaryMessage` to persist dead-end status in session history.
- Introduced a multi-tier rescue mechanism in `AgentSession` that automatically performs `elide` and `dropImages` passes when maintenance fails to recover sufficient headroom.
- Integrated visual indicators for dead-ends into the `CompactionSummaryMessageComponent`, surfacing warnings directly on the compaction divider and detail block.
- Updated `AgentSession` logic to re-evaluate progress after each rescue tier and emit recovery notices, ensuring transparent reporting of automated history rewrites.
- Introduced an `AgentPauseGate` mechanism to suspend and resume agent loops and tool executions safely.
- Added a `/pause` slash command to trigger a new fullscreen UI that manages agent suspension and lifecycle.
- Integrated pause checks into the core agent loop and tool execution pipeline to ensure responsive state handling.
- Provided a new pause screen component to facilitate user interaction and resume control during suspension.
Escaped Harmony control-token markers when compaction serializes transcripts into plain summary prompts so Copilot gpt-5.6 models do not reject analysis-channel text.
Added regression coverage for summary-bound Harmony serialization while keeping native transcript rendering unchanged.
Fixes#5184
can1357