fix(server): Claude 5 task lists show up on orchestrator v2

[TonybynMp4]

Fixes #14322

Claude 5 models no longer have TodoWrite. They only get TaskCreate/TaskUpdate/TaskList when CLAUDE_CODE_ENABLE_TODO_TOOLS=1 is set, and the V2 Claude adapter neither sets it nor maps those tools. So Claude 5 task lists never reach the UI.

• createClaudeAdapterV2 sets CLAUDE_CODE_ENABLE_TODO_TOOLS=1 unless the environment already sets it.
• The adapter keeps one task map per session and updates it from finished root task-tool calls. Subagent calls are ignored.
  • TaskCreate takes the task's id and subject from the tool result.
  • TaskUpdate changes status or subject, and deleted removes the task.
  • TaskList replaces the whole list.
• Each turn projects the map as one todo_list plan that updates in place. The previous turn's plan is superseded, like other plan kinds.
• TaskCreate/TaskGet/TaskList/TaskUpdate are classified as known tools.

This is the adapter half of #14337, which was closed because it also changed the composer drawer. The drawer is left as is here: the list shows while the turn runs and hides when the turn ends. That behavior is #14327 and waits on a maintainer decision.

Tests:

• ClaudeAdapterV2.test.ts covers a two-turn task list, and the SDK launch test checks the env opt-in.
• A new claude_todo_list replay fixture, recorded against claude-sonnet-5-5, fails without the fix. The recorder opts into task tools the same way the adapter does.

In read-only sandbox mode Claude only gets Read/Glob/Grep, so it has no task tools there. It had no TodoWrite there before either.

Claude Opus 5.5 via Claude Code in T3 Code.

🤖 Generated with Claude Code

[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable — The Claude production adapter now enables task tools by default and adds stateful, user-visible task-list projections across turns. This changes normal request behavior and warrants human review.

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📒 Files selected for processing (2)

• apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.test.ts
• apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts

🚧 Files skipped from review as they are similar to previous changes (2)

• apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts
• apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.test.ts

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📝 Walkthrough

Walkthrough

ClaudeAdapterV2 enables Claude task tools by default and converts successful root-thread task results into todo-list plan projections. The change adds adapter tests and a Claude replay fixture for creating, updating, and completing tasks.

Changes

Claude 5 task-list projection

Layer / File(s)	Summary
Task tool handling and plan projection apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts, apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.test.ts, apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.testkit.ts	Claude task tools are classified as dynamic command tools. Successful root-thread TaskList, TaskCreate, and TaskUpdate results update thread-specific task state and can emit a todo-list projection. Rollback clears the tracked tasks for the affected thread. The adapter and test harness enable TODO tools by default, while explicit environment values take precedence. Tests cover task projection, rollback, and SDK launch options.
Replay fixture and recording scenario apps/server/src/orchestration-v2/testkit/fixtures/claude_todo_list/*, apps/server/src/orchestration-v2/testkit/fixtures/index.ts, apps/server/scripts/record-claude-agent-sdk-replay-fixture.ts	A Claude replay fixture prompts for three tasks, records their creation and status updates, and asserts the final todo-list projection. The fixture is registered for replay and added to the recorder’s temporary-workspace setup.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Bug fix · Severity of issue fixed: Medium

Sequence Diagram(s)

sequenceDiagram
  participant ClaudeAgentSDK
  participant ClaudeAdapterV2
  participant TodoListProjection
  ClaudeAgentSDK->>ClaudeAdapterV2: Successful root task-tool result
  ClaudeAdapterV2->>ClaudeAdapterV2: Update thread-specific task state
  ClaudeAdapterV2->>TodoListProjection: Emit projection when task state changes

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Merge Risk: 🔵 Low · up to 343b7

After rolling back to an earlier turn, the task drawer may remain stale until Claude lists its tasks again. Claude’s task update still proceeds, so this is a bounded issue rather than a merge blocker.

Security Architecture Review

Security architecture risk: 🔵 Low · up to 4c6e9

Existing access restrictions remain in place, and no new privileged access was demonstrated. Task lists may retain earlier entries after a conversation is rewound or reset; recovery behavior is not fully established.

Retained concerns

• Low · reliability · inferred: The new task map follows adapter-session lifetime rather than the conversation recovery point. Rollback and reset leave it intact. If a populated runtime is reused and TaskCreate or TaskUpdate arrives before TaskList, the next plan can include pre-rollback tasks. This is a conditional rollback/ownership mismatch, not a verified cross-tenant disclosure; end-to-end reuse and mandatory refresh ordering remain unverified.

Security review details

Security Blast Radius

• inferred — The directly evidenced exposure is provider-supplied task content entering session-cached state and thread/run-tagged task-plan records. The inspected projection does not establish a path to additional credentials, privileged execution, or other tenants. Downstream display behavior and external provider semantics were not fully examined.

Trust Boundaries and Controls

• observed — Read-only policy selects only Read, Glob, and Grep. The new environment flag does not replace that tool selection or the separately supplied permission controls and native session identity. Task-tool classification is distinct from granting execution permission.

Resilience and Maintainability Implications

• observed — Native fork preparation opens a session for the target application thread before invoking forkThread. This counters treating session-manager delegation as proof that a populated source task map crosses into every fork. Rollback-refresh guarantees remain unresolved.

Hardening Proposals

• proposed — Associate cached task state with native conversation identity and its recovery point, or require an authoritative refresh before publishing cached tasks after a rewind or reset.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 18.18% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 11 functions across 7 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the main change: making Claude 5 task lists appear in orchestrator v2.
Description check	✅ Passed	The description explains the problem, the adapter changes, the out-of-scope drawer behavior, and the tests. It does not state maintainer approval or explain why the change qualifies for an approval ex…
Linked Issues check	✅ Passed	#14322 requires Claude 5 task lists to reach the v2 UI as a todo_list plan. createClaudeAdapterV2 defaults CLAUDE_CODE_ENABLE_TODO_TOOLS to "1" while preserving an explicit environment value. …
Out of Scope Changes check	✅ Passed	The adapter changes, task-tool classifications, SDK launch test, replay fixture, and recorder registration all support #14322. The new per-thread state and rollback reset support correct task-list lif…

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Inline comments:
Review comments at
@apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts:
- Around line 6162-6179: Scope claudeTasks by native thread ID in the
ClaudeAdapterV2 task-result flow, so TaskCreate and todo-list projections use
only that thread’s state. Update rollback handling to reset or rebuild only the
rolled-back thread’s task state, and ensure forks receive separate state rather
than sharing their source thread’s map.

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📥 Commits

Reviewing files that changed from the base of the PR and between 00eb8f6 and 4c6e907.

📒 Files selected for processing (8)

• apps/server/scripts/record-claude-agent-sdk-replay-fixture.ts
• apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.test.ts
• apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.testkit.ts
• apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts
• apps/server/src/orchestration-v2/testkit/fixtures/claude_todo_list/claude_transcript.ndjson
• apps/server/src/orchestration-v2/testkit/fixtures/claude_todo_list/input.ts
• apps/server/src/orchestration-v2/testkit/fixtures/claude_todo_list/output.ts
• apps/server/src/orchestration-v2/testkit/fixtures/index.ts

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[Carter4242]

Would love to see this merged! Sad I can't see tasks.

[juliusmarminge]

Note

Grok responding on behalf of Julius.

Thanks for working on this! #14322 is now fixed by #14964, which just merged and covers the same adapter change (mapping TaskCreate/TaskUpdate/TaskList into a todo_list plan). One difference: following review there, T3 Code doesn't set CLAUDE_CODE_ENABLE_TODO_TOOLS by default; users opt in through the Claude instance's Environment variables. Closing this as superseded. If the claude_todo_list replay fixture here would still add coverage on top of #14964, feel free to open a small follow-up PR with just that.