- Port session memory compaction, microcompact, hooks system, and
prompt-too-long retry from the Claude Code CLI source
- Add spawn_parallel_tasks tool with serial queue drain fan-out pattern
- Add worktree isolation: new_task/spawn_parallel_tasks accept a worktree
param; ClineProvider creates/cleans up git worktrees per child task
- Add completionPayload: attempt_completion result parsed as JSON and
aggregated across parallel tasks for structured fan-in
- Fix workspacePath priority so explicit override always wins over parent
- Emit TaskSpawned event from delegateParentAndOpenChild
- Scope MCP hub to per-task workspacePath for worktree-aware mcp.json
- Fix microCompact bugs: touched flag, off-by-one threshold, keepRecent:0
- Fix lazy OutputChannel init in hooks executor to avoid test failures
- Fix pre-existing lint warnings across src, packages/cloud, webview-ui
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Revert to pre-AI-SDK state (commit 67e568f6b)
This commit reverts the codebase to the state before AI SDK migration work began.
Target commit: 67e568f6b - refactor: replace fetch_instructions with skill tool and built-in skills (#10913)
Date: January 29, 2026
This removes approximately 152 commits of AI SDK migration work.
A follow-up PR will add back bug fixes and features that are unrelated to AI SDK.
Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>
* fix: race conditions in subtask delegation system
Comprehensive fix for race conditions and error handling gaps in the subtask
delegation system. Addresses multiple failure modes that could leave parent
tasks permanently stuck in 'delegated' status, causing nested subtasks to hang.
Key fixes:
- Remove initialStatus from taskMetadata rebuild (eliminates status overwrites)
- Persist delegation metadata to per-task files (resolves globalState eviction)
- Add delegationInProgress mutex guard (prevents concurrent delegation ops)
- TOCTOU race fixes with fresh re-reads before writes
- Abort-aware pWaitFor predicate (prevents false 60s timeout on user input)
- Remove silent .catch(() => {}) — all errors now logged unless task is aborting
- Single-attempt delegation with parent repair on failure (no retry band-aids)
- Cancel debouncedEmitTokenUsage in dispose() (prevents zombie callbacks)
- new_task isolation truncation for parallel tool calls
* fix: write all 6 delegation fields in every saveDelegationMeta call site
* fix: align delegation tests with single-attempt implementation (no retry)
The pendingNewTaskToolCallId was being set AFTER startSubtask() returned.
However, startSubtask() contains a 500ms delay during which the subtask
could complete. If the subtask completed during this window, completeSubtask()
would be called before pendingNewTaskToolCallId was set, causing it to
fall through to the XML protocol path and add a text message instead of
a proper tool_result block, breaking the API conversation structure.
This fix moves the pendingNewTaskToolCallId assignment to happen BEFORE
calling startSubtask(), ensuring the ID is set before the subtask starts.
If the subtask creation fails, the pending ID is cleared.
