Tianyi Cui
6520f71f94
Merge remote-tracking branch 'origin/codex/invariant-service-seam' into codex/invariant-package-registration-gate
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# Conflicts:
# .agents/notes/implemented/architecture/2026-07-19-package-owned-invariant-service.i18n.yaml
# docs/core-data-structures/session.md
# docs/module-graph.md
# package.json
# packages/sdk/scripts/tsconfig.json
2026-07-20 00:35:06 +08:00
Tianyi Cui
b46dfe08a2
Merge remote-tracking branch 'origin/master' into codex/invariant-service-seam
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# Conflicts:
# .agents/notes/implemented/architecture/2026-07-19-package-owned-invariant-service.i18n.yaml
# .agents/notes/implemented/architecture/2026-07-19-package-owned-invariant-service.md
# .agents/notes/implemented/architecture/2026-07-19-package-owned-invariant-service.zh.md
# .agents/notes/implemented/feature/2026-06-18-compaction-capability-seam.md
# .agents/notes/implemented/feature/2026-07-07-session-prefix.md
# .agents/notes/implemented/process/2026-07-14-typescript-program-backed-semantic-gates.i18n.yaml
# docs/architecture.md
# docs/config-catalog.md
# docs/core-data-structures/session.md
# docs/rfc/INDEX.md
# packages/examples/agent-spine-demo/README.md
# packages/examples/agent-spine-demo/src/index.ts
# packages/examples/agent-spine-demo/tests/agent-core.spec.ts
# packages/support/invariants/README.md
# packages/support/invariants/src/index.ts
# packages/support/invariants/tests/invariants.spec.ts
2026-07-20 00:25:31 +08:00
Tianyi Cui
e8eddc7ef8
Rename RFCs to Agent Notes
2026-07-19 22:52:03 +08:00
Tianyi Cui
433670a754
feat(invariants): require package-owned companions
2026-07-19 22:13:50 +08:00
Tianyi Cui
9d310ecc27
feat(invariants): add package-owned service seam
2026-07-19 19:19:57 +08:00
Tianyi Cui
fd54b5c848
Merge latest master into post-step recovery
...
Combine agent initiator scoping and exact Cordis JSDoc inspection with post-step compaction and bounded request recovery.
Regenerate the Cordis and website API catalogs, and classify the recovery and compaction types required by the current catalog link-coverage gate.
2026-07-19 16:46:01 +08:00
Tianyi Cui
ee6b9d081a
fix(llm): scope adapter failures to model calls
...
Replace the process-wide adapter-failure WeakSet with a per-call scope bound to the exact AsyncIterable returned by LlmService.stream(). Give every call a unique wrapper so waterfall middleware can reuse an iterable without sharing provenance.
Move agent-loop recovery classification to the model-stream boundary. Only the final adapter behind that exact call can become an agent/request-error; nested llm/stream calls remain ordinary outer middleware failures while preserving the original Error.
Cover nested calls, reused middleware iterables, and end-to-end agent-loop recovery. Update the package and RFC contracts, bilingual pairing record, and generated API and catalog references.
2026-07-19 16:14:58 +08:00
Tianyi Cui
e1a4a2963d
docs(core): document initiator API scenarios
2026-07-19 15:34:08 +08:00
Tianyi Cui
2397059fe3
Merge PR #340 into codex/website-api-jsdoc
2026-07-19 15:29:42 +08:00
Tianyi Cui
ee1a44793a
fix(core): make initiator teardown reentrant-safe
2026-07-19 15:12:18 +08:00
Tianyi Cui
9163f61299
docs: include JSDoc in website API markers
2026-07-19 14:14:02 +08:00
Tianyi Cui
44d9fbcd6d
Merge remote-tracking branch 'origin/master' into codex/pr332-merge-master-20260719
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# Conflicts:
# docs/cookbook/extension-cookbook.i18n.yaml
2026-07-19 13:36:08 +08:00
Tianyi Cui
9828892742
Merge latest origin/master into worktree/agent-execution-context-rfc
2026-07-19 13:34:48 +08:00
Tianyi Cui
c23214be56
refactor(core): fold initiator scope into agents
2026-07-19 13:30:45 +08:00
Tianyi Cui
2faeabb05a
refactor(examples): rename coding-agent leaf to repl-agent
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Name the runnable leaf for the line-oriented front door it owns, matching the existing tui-agent and acp-agent organization. Move the complete config, Code Mode overlay, tests, metadata, and generated composition graph together, then update every loader path and repository reference.
Keep the shared model identity independent of its terminal front door by phrasing the persona as a coding-agent role rather than retaining the retired leaf name. Regenerate graph and tool catalogs and re-record each affected bilingual pair so derived documentation cannot point at the removed path.
2026-07-19 13:13:14 +08:00
Tianyi Cui
536cb6f985
Merge latest origin/master into worktree/agent-execution-context-rfc
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# Conflicts:
# docs/event-producer-consumer.md
# docs/module-graph.md
# packages/examples/README.md
2026-07-19 13:04:29 +08:00
Tianyi Cui
7538cef967
docs(agent): describe cancelled post-step checkpoint
2026-07-19 12:35:43 +08:00
Tianyi Cui
78d03cd21f
Merge latest origin/master into compact-post-step-overflow-recovery
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# Conflicts:
# docs/event-producer-consumer.md
2026-07-19 12:16:34 +08:00
Tianyi Cui
7be78c7d4c
Merge latest origin/master into compact-post-step-overflow-recovery
...
# Conflicts:
# docs/agent-lifecycle.md
# docs/architecture.md
# docs/cookbook/extension-cookbook.i18n.yaml
# docs/cordis-catalog/events.md
# docs/cordis-catalog/services.md
# docs/event-producer-consumer.md
# docs/rfc/INDEX.md
# docs/rfc/implemented/architecture/2026-07-05-reconstructable-requests.md
# docs/rfc/implemented/architecture/2026-07-15-replay-token-meter-service.i18n.yaml
# docs/rfc/implemented/architecture/2026-07-15-replay-token-meter-service.md
# docs/rfc/implemented/architecture/2026-07-15-replay-token-meter-service.zh.md
# docs/rfc/implemented/feature/2026-06-18-compaction-capability-seam.md
# docs/rfc/implemented/feature/2026-07-07-session-prefix.md
# packages/compact/compact-basic/README.md
# packages/compact/compact-basic/src/config.ts
# packages/compact/compact-basic/src/index.ts
# packages/compact/compact-basic/src/summarizer.ts
# packages/compact/compact-basic/tests/compact-basic.spec.ts
# packages/compact/compact-basic/tests/compact-loop-repro.spec.ts
# packages/compact/compact/README.md
# packages/cordis/tool-cordis/src/api-catalog.ts
# packages/core/agent-loop/src/loop.ts
# packages/core/agent-loop/tests/cancel.spec.ts
# packages/llm/llm-deepseek/src/adapter.ts
# packages/llm/llm-pi-ai/README.md
# packages/llm/llm-pi-ai/src/stream.ts
# packages/llm/llm-pi-ai/tests/convert.spec.ts
# packages/llm/llm/README.md
# packages/llm/llm/src/index.ts
# packages/llm/llm/tests/service.spec.ts
# scripts/gen-doc-graphs.ts
2026-07-19 12:06:23 +08:00
Tianyi Cui
cfe9b9617d
Merge remote-tracking branch 'origin/master' into worktree/agent-execution-context-rfc
...
# Conflicts:
# docs/architecture.md
# docs/config-catalog.md
# docs/cordis-catalog/services.md
# docs/module-graph.md
# examples/coding-agent/tests/code-mode.e2e.ts
# packages/context/workspace-context/tests/workspace-context.spec.ts
# packages/core/README.md
# packages/core/agent-loop/README.md
# packages/core/agent-loop/tests/agent.spec.ts
# packages/core/agent-loop/tests/cancel.spec.ts
# packages/core/agent-loop/tests/config-session-id.spec.ts
# packages/core/agent-loop/tests/contract-regressions.spec.ts
# packages/core/agent-loop/tests/coverage-edges.spec.ts
# packages/core/agent-loop/tests/interception.spec.ts
# packages/core/agent-loop/tests/loop.spec.ts
# packages/core/agent-loop/tests/properties.spec.ts
# packages/core/agent-loop/tests/request-cache.e2e.ts
# packages/core/agent-loop/tests/request-reconstruction.spec.ts
# packages/core/agent-loop/tests/resume.spec.ts
# packages/core/agent-loop/tests/scope-lifecycle.spec.ts
# packages/core/agent-loop/tests/tool-calls.spec.ts
# packages/core/agent-loop/tests/tool-order.spec.ts
# packages/core/agent-loop/tests/turn-stop.spec.ts
# packages/workflow/workflow-workerthread/tests/workflow-workerthread.e2e.ts
# website/zh-CN/api/harness/agent-loop.md
2026-07-19 11:44:50 +08:00
Tianyi Cui
765dfb2174
refactor(session): use one surface manager
2026-07-19 11:36:07 +08:00
Tianyi Cui
7e0bf44f09
Merge branch 'codex/simp-ui-identity-residue' into codex/simp-hide-concrete-agent-loop
2026-07-19 02:39:09 +08:00
Tianyi Cui
a656ab4120
Merge branch 'codex/simp-unify-agent-session-id' into codex/simp-ui-identity-residue
2026-07-19 02:39:09 +08:00
Tianyi Cui
0c84c2a842
Merge branch 'codex/simp-agent-entry-state' into codex/simp-unify-agent-session-id
2026-07-19 02:39:09 +08:00
Tianyi Cui
8209532bb4
Merge branch 'codex/simp-compaction-surface' into codex/simp-agent-entry-state
2026-07-19 02:39:09 +08:00
Tianyi Cui
255dacd301
Merge branch 'codex/simp-trim-hook-snapshot-noise' into codex/simp-compaction-surface
2026-07-19 02:39:08 +08:00
Tianyi Cui
7b076a1e01
Merge remote-tracking branch 'origin/master' into codex/simp-prune-llm-contract
2026-07-19 02:10:25 +08:00
Tianyi Cui
18653a9ff7
Merge branch 'codex/simp-ui-identity-residue' into codex/simp-hide-concrete-agent-loop
...
# Conflicts:
# docs/config-catalog.md
# docs/cordis-catalog/events.md
# docs/cordis-catalog/services.md
# docs/event-producer-consumer.md
# packages/core/agent-loop/tests/agent.spec.ts
# packages/core/agent-loop/tests/contract-regressions.spec.ts
# website/zh-CN/api/harness/agent-loop.md
# website/zh-CN/api/harness/events.md
2026-07-19 01:57:18 +08:00
Tianyi Cui
b61e68ae8c
Merge branch 'codex/simp-unify-agent-session-id' into codex/simp-ui-identity-residue
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# Conflicts:
# docs/event-producer-consumer.md
2026-07-19 01:55:29 +08:00
Tianyi Cui
f65f4b82d7
Merge branch 'codex/simp-agent-entry-state' into codex/simp-unify-agent-session-id
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# Conflicts:
# docs/config-catalog.md
# docs/cordis-catalog/services.md
# packages/core/agent-loop/README.md
# packages/core/agent-loop/src/agent.ts
# packages/core/agent-loop/src/index.ts
# packages/core/agent-loop/tests/agent.spec.ts
# packages/core/agent-loop/tests/contract-regressions.spec.ts
# website/zh-CN/api/harness/agent-loop.md
2026-07-19 01:54:03 +08:00
Tianyi Cui
a45f0d73f3
Merge branch 'codex/simp-compaction-surface' into codex/simp-agent-entry-state
2026-07-19 01:47:42 +08:00
Tianyi Cui
3c03ca8a3c
Merge branch 'codex/simp-trim-hook-snapshot-noise' into codex/simp-compaction-surface
2026-07-19 01:47:42 +08:00
Yichen Jiang
0e4785cdb7
Merge origin/master into worktree/agent-execution-context-rfc
2026-07-18 21:20:30 +08:00
Tianyi Cui
50f0291b93
Merge latest origin/master into parallel-tool-call
...
# Conflicts:
# docs/architecture.md
# examples/acp-agent/tests/snapshots/bash-spill/session.jsonl
# examples/acp-agent/tests/snapshots/escalation-approved/session.jsonl
# examples/acp-agent/tests/snapshots/escalation-rejected/session.jsonl
# examples/acp-agent/tests/snapshots/hook-cc-pretool-ask/session.jsonl
# packages/core/agent-loop/src/loop.ts
2026-07-18 15:09:39 +08:00
Tianyi Cui
21ec178841
docs: tighten parallel tool-call prose
2026-07-18 14:59:26 +08:00
Tianyi Cui
90cbe2573b
Merge remote-tracking branch 'origin/master' into codex/simp-prune-llm-contract
2026-07-18 14:52:54 +08:00
Tianyi Cui
2db38ecf05
Merge branch 'codex/simp-ui-identity-residue' into codex/simp-hide-concrete-agent-loop
...
# Conflicts:
# docs/event-producer-consumer.md
# packages/core/agent-loop/README.md
# packages/core/agent-loop/tests/contract-regressions.spec.ts
2026-07-18 14:52:34 +08:00
Tianyi Cui
7d34e33b9e
Merge branch 'codex/simp-unify-agent-session-id' into codex/simp-ui-identity-residue
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# Conflicts:
# docs/event-producer-consumer.md
2026-07-18 14:51:21 +08:00
Tianyi Cui
d2426fed5d
Merge branch 'codex/simp-agent-entry-state' into codex/simp-unify-agent-session-id
...
# Conflicts:
# docs/cordis-catalog/events.md
# docs/event-producer-consumer.md
# packages/core/agent-loop/src/agent.ts
# packages/core/agent-loop/tests/contract-regressions.spec.ts
# packages/core/agent-loop/tests/loop.spec.ts
# website/zh-CN/api/harness/events.md
2026-07-18 14:50:55 +08:00
Tianyi Cui
68544463df
Merge branch 'codex/simp-compaction-surface' into codex/simp-agent-entry-state
2026-07-18 14:48:27 +08:00
Tianyi Cui
30a3a6db58
Merge branch 'codex/simp-trim-hook-snapshot-noise' into codex/simp-compaction-surface
2026-07-18 14:48:20 +08:00
Tianyi Cui
546143048c
docs(api): refresh llm reference
2026-07-18 14:29:29 +08:00
Tianyi Cui
a42c77f883
Merge branch 'codex/simp-ui-identity-residue' into codex/simp-hide-concrete-agent-loop
2026-07-18 14:27:53 +08:00
Tianyi Cui
0f85ae0a9d
fix(subagent): identify lifecycle runs explicitly
2026-07-18 14:26:14 +08:00
Tianyi Cui
9d00664403
docs(api): refresh agent reference
2026-07-18 13:54:48 +08:00
Tianyi Cui
1815095579
docs(api): refresh compact reference
2026-07-18 13:54:24 +08:00
Tianyi Cui
aacedf2700
Merge current master into debug-pangwenjie
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# Conflicts:
# docs/cordis-catalog/events.md
# docs/core-data-structures/core.md
# docs/core-data-structures/tools.md
# docs/event-producer-consumer.md
# docs/rfc/implemented/feature/2026-06-30-interception-seams.md
# docs/tool-execution-pipeline.md
# packages/core/agent-loop/src/agent.ts
# packages/core/agent-loop/src/loop.ts
# packages/core/agent-loop/tests/loop.spec.ts
# packages/core/agent/README.md
# packages/core/tools/src/index.ts
# scripts/gen-doc-graphs.ts
2026-07-18 13:39:12 +08:00
Tianyi Cui
6f01d4d099
Merge branch 'codex/simp-ui-identity-residue' into codex/simp-hide-concrete-agent-loop
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# Conflicts:
# docs/event-producer-consumer.md
# examples/coding-agent/tests/code-mode.e2e.ts
# examples/coding-agent/tests/harness.ts
# examples/coding-agent/tests/resume.e2e.ts
# examples/cordis-agent/tests/harness.ts
# packages/bash/tool-bash/tests/integration.spec.ts
# packages/compact/compact-basic/tests/compact-loop-repro.spec.ts
# packages/cordis/tool-cordis/tests/integration.spec.ts
# packages/core/agent-loop/tests/contract-regressions.spec.ts
# packages/guard/repeat-tool-guard/tests/repeat-tool-guard.spec.ts
# packages/hooks/hooks-claude/tests/bridge.spec.ts
# packages/hooks/hooks-claude/tests/coverage.spec.ts
# packages/hooks/hooks-codex/tests/bridge.spec.ts
# packages/hooks/hooks-codex/tests/coverage.spec.ts
# packages/todo/tool-todo/tests/integration.spec.ts
2026-07-18 12:33:49 +08:00
Tianyi Cui
35473c2701
Merge branch 'codex/simp-unify-agent-session-id' into codex/simp-ui-identity-residue
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# Conflicts:
# AGENTS.md
# docs/config-catalog.md
# docs/event-producer-consumer.md
# examples/acp-agent/tests/snapshots/advanced-toolchain/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/both-mode-turn/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/cancel/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/code-mode-turn/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/config-options/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/error-finish/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/escalation-approved/session.jsonl
# examples/acp-agent/tests/snapshots/escalation-approved/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/escalation-rejected/session.jsonl
# examples/acp-agent/tests/snapshots/escalation-rejected/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/fs-edit/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/fs-policy-reject/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/fs-read-window/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/fs-read/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/fs-terminal-card/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/fs-write-overwrite/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/fs-write/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/handshake/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-cc-posttool-block/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-cc-posttool-context/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-cc-pretool-ask/session.jsonl
# examples/acp-agent/tests/snapshots/hook-cc-pretool-ask/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-cc-pretool-deny/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-cc-promptsubmit-block/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-cc-promptsubmit-context/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-cc-stop-continue/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-codex-posttool-block/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-codex-posttool-context/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-codex-pretool-block/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-codex-promptsubmit-block/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-codex-promptsubmit-context/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/hook-codex-stop-continue/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/multi-turn/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/permission-switching/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/repeat-tool-guard/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/skill-load/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/subagent-fork/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/subagent-mixed/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/subagent-multi/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/subagent-spawn/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/text-turn/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/todo-plan/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/tool-call-turn/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/workflow-run/stdout.golden.jsonl
# examples/acp-agent/tests/snapshots/workspace-edit/stdout.golden.jsonl
# packages/ui/acp/README.md
# packages/ui/acp/src/index.ts
# packages/ui/jsonrpc/README.md
# packages/ui/jsonrpc/src/server.ts
2026-07-18 12:25:33 +08:00
Tianyi Cui
59dc310bb5
Merge branch 'codex/simp-agent-entry-state' into codex/simp-unify-agent-session-id
...
# Conflicts:
# docs/architecture.md
# docs/config-catalog.md
# docs/cordis-catalog/events.md
# docs/cordis-catalog/services.md
# docs/core-data-structures/core.md
# docs/event-producer-consumer.md
# docs/module-graph.md
# examples/coding-agent/tests/code-mode.e2e.ts
# examples/coding-agent/tests/coding-task.e2e.ts
# examples/coding-agent/tests/compaction.e2e.ts
# examples/coding-agent/tests/full-loop.e2e.ts
# examples/coding-agent/tests/todo-write.e2e.ts
# examples/cordis-agent/tests/cordis-tools.e2e.ts
# packages/bash/tool-bash/tests/integration.spec.ts
# packages/bash/tool-bash/tests/tools.spec.ts
# packages/compact/compact-basic/tests/compact-loop-repro.spec.ts
# packages/context/time-context/tests/time-context.spec.ts
# packages/cordis/tool-cordis/src/api-catalog.ts
# packages/cordis/tool-cordis/tests/integration.spec.ts
# packages/core/agent-loop/README.md
# packages/core/agent-loop/src/agent.ts
# packages/core/agent-loop/src/index.ts
# packages/core/agent-loop/tests/agent.spec.ts
# packages/core/agent-loop/tests/cancel.spec.ts
# packages/core/agent-loop/tests/config-session-id.spec.ts
# packages/core/agent-loop/tests/contract-regressions.spec.ts
# packages/core/agent-loop/tests/coverage-edges.spec.ts
# packages/core/agent-loop/tests/interception.spec.ts
# packages/core/agent-loop/tests/loop.spec.ts
# packages/core/agent-loop/tests/properties.spec.ts
# packages/core/agent-loop/tests/request-cache.e2e.ts
# packages/core/agent-loop/tests/request-reconstruction.spec.ts
# packages/core/agent-loop/tests/resume.spec.ts
# packages/core/agent-loop/tests/scope-lifecycle.spec.ts
# packages/core/agent-loop/tests/tool-order.spec.ts
# packages/core/agent-loop/tests/turn-stop.spec.ts
# packages/core/agent/src/types.ts
# packages/examples/agent-spine-demo/README.md
# packages/examples/agent-spine-demo/tests/agent-core.spec.ts
# packages/examples/stdio-demo/README.md
# packages/examples/stdio-demo/src/index.ts
# packages/examples/stdio-demo/tests/stdio-agent.spec.ts
# packages/fs/tool-fs/tests/fs-tools.e2e.ts
# packages/guard/repeat-tool-guard/tests/repeat-tool-guard.spec.ts
# packages/hooks/hooks-claude/tests/bridge.spec.ts
# packages/hooks/hooks-claude/tests/coverage.spec.ts
# packages/hooks/hooks-codex/tests/bridge.spec.ts
# packages/hooks/hooks-codex/tests/coverage.spec.ts
# packages/subagent/subagent-fork/tests/multi-subagent.spec.ts
# packages/subagent/subagent-fork/tests/subagent-fork.spec.ts
# packages/subagent/subagent-inprocess/tests/structured.spec.ts
# packages/subagent/subagent-inprocess/tests/subagent-inprocess.spec.ts
# packages/subagent/subagent-spawn/tests/spawn.e2e.ts
# packages/subagent/subagent-spawn/tests/subagent-spawn.spec.ts
# packages/todo/tool-todo/tests/integration.spec.ts
# packages/ui/acp/tests/dispose.spec.ts
# packages/ui/acp/tests/edges.spec.ts
# packages/workflow/workflow-workerthread/tests/integration.spec.ts
2026-07-18 12:21:15 +08:00
Tianyi Cui
Yichen Jiang