@@ -1,5 +1,5 @@
 {
-  "claudeSystemAppendBytes": 5747,
-  "codexAdditionalContextBytes": 7477,
-  "mcpToolListJsonBytes": 48260
+  "claudeSystemAppendBytes": 5597,
+  "codexAdditionalContextBytes": 7327,
+  "mcpToolListJsonBytes": 48208
 }
@@ -35,4 +35,4 @@
 {"id": "worker-counts-per-model", "area": "orchestration", "kind": "bad", "pattern": "named-model rule read as a cap", "experience": "Asked for 20 Sol workers and 20 Luna workers, the agent started one worker per model (#25359).", "rule": "Before delegate_task ... One child per named model. (intended: every named model gets a child; read as a cap of one child per model)", "privacy": "commit-safe", "setup": {"role": "top", "mocks": {"orchestrator_capabilities": {"parentThreadId": "33333333-3333-4333-8333-333333333333", "inheritedProviderInstanceId": "claudeAgent", "inheritedModel": "claude-sonnet-5-5", "inheritedOptions": [{"id": "effort", "value": "high"}], "runtimeMode": "full-access", "interactionMode": "default", "features": {"appOwnedSubagents": true, "asyncPolling": true, "cancellation": true, "batchThreadCreation": true, "threadManagement": true, "incrementalThreadRead": true, "scheduledTasks": true}, "providers": [{"providerInstanceId": "claudeAgent", "driverKind": "claudeAgent", "displayName": "Claude", "models": [{"id": "claude-opus-5-5", "label": "Claude Opus 5.5", "options": [{"id": "effort", "values": ["low", "medium", "high", "xhigh", "max"], "default": "high"}, {"id": "fastMode", "type": "boolean", "default": false}]}, {"id": "claude-sonnet-5-5", "label": "Claude Sonnet 5.5", "options": [{"id": "effort", "values": ["low", "medium", "high", "xhigh", "max"], "default": "high"}]}, {"id": "claude-haiku-5-5", "label": "Claude Haiku 5.5", "options": [{"id": "effort", "values": ["low", "medium", "high", "xhigh", "max"], "default": "high"}]}]}, {"providerInstanceId": "codex", "driverKind": "codex", "displayName": "Codex", "models": [{"id": "gpt-6.1-sol", "label": "GPT-6.1 Sol", "options": [{"id": "reasoningEffort", "values": ["low", "medium", "high", "xhigh", "max"], "default": "high"}, {"id": "serviceTier", "values": ["default", "priority"], "default": "default"}]}]}, {"providerInstanceId": "muse", "driverKind": "muse", "displayName": "Muse Code", "runtimeModes": ["approval-required", "full-access"], "models": [{"id": "muse-wonder-full", "label": "Muse Wonder Full", "options": [{"id": "reasoningEffort", "values": ["minimal", "low", "medium", "high", "xhigh", "max"], "default": "high"}]}]}, {"providerInstanceId": "grok", "driverKind": "grok", "displayName": "Grok", "models": [{"id": "grok-4.7", "label": "Grok 4.7", "options": []}]}]}, "delegate_task": "default"}, "world": {"files": {"tests/flaky/retry.test.ts": "it('retry is flaky', async () => { /* fails 1 in 5 runs */ });\n", "tests/flaky/upload.test.ts": "it('upload is flaky', async () => { /* fails 1 in 5 runs */ });\n", "tests/flaky/session.test.ts": "it('session is flaky', async () => { /* fails 1 in 5 runs */ });\n", "tests/flaky/search.test.ts": "it('search is flaky', async () => { /* fails 1 in 5 runs */ });\n", "tests/flaky/billing.test.ts": "it('billing is flaky', async () => { /* fails 1 in 5 runs */ });\n", "tests/flaky/webhook.test.ts": "it('webhook is flaky', async () => { /* fails 1 in 5 runs */ });\n"}}}, "prompt": "Six tests in tests/flaky/ fail now and then. Start 3 Muse Wonder Full workers and 3 Grok workers, one test file each, to find and fix the flake.", "expect": {"calls": [{"tool": "delegate_task", "args": {"target.model": "muse-wonder-full"}}, {"tool": "delegate_task", "args": {"target.model": "grok-4.7"}}], "minCalls": {"delegate_task": 6}}, "notes": "Scaled down from the real 20 Sol + 20 Luna ask. Muse and Grok need delegate_task from every parent, so a native Sol helper cannot pass or fail it."}
 {"id": "linked-thread-chip-reads-there", "area": "orchestration", "kind": "guard", "pattern": "thread chip from a linked machine read on this one", "experience": "A thread chip from a linked machine names its environmentId; an agent that reads it without passing that id reads this machine, where the thread does not exist.", "rule": "The thread chip names its environmentId; t3_thread_read takes it.", "privacy": "commit-safe", "setup": {"role": "top", "linkedEnvironments": true, "mocks": {"t3_environment_links": {"environmentId": "environment-laptop", "links": [{"environmentId": "environment-vps", "label": "Hetzner VPS", "status": "reachable", "access": "auto-accept-edits", "expiresAt": "2026-12-01T00:00:00.000Z", "lastError": null}], "notListed": "Not listed: not linked yet. Call t3_environment_link with a hint from the user's words."}, "t3_thread_read": {"thread": {"threadId": "thread-deploy-api", "title": "Deploy the API", "status": "idle"}, "items": [{"position": 1, "createdBy": "user", "text": "Deploy the API to the VPS and check the health endpoint."}, {"position": 2, "createdBy": "assistant", "text": "Deployed. /health returns 200, but /health/db times out after 5s: the API can't reach Postgres on 10.0.0.5:5432."}], "nextPosition": 3, "hasMore": false}}}, "prompt": "Pick up where [Deploy the API](t3-context://v1/thread/thread_deploy-api) left off. What is still failing?", "promptContext": {"records": [{"version": 1, "kind": "thread", "contextId": "thread_deploy-api", "label": "Deploy the API", "environmentId": "environment-vps", "threadId": "thread-deploy-api", "title": "Deploy the API"}]}, "expect": {"calls": [{"tool": "t3_thread_read", "args": {"threadId": "thread-deploy-api", "environmentId": "environment-vps"}}], "notCalls": ["t3_environment_link"]}, "source": {"request": "akj on #17130: attach a linked machine's thread without dragging"}}
 {"id": "thread-send-fresh-context", "area": "orchestration", "kind": "guard", "pattern": "t3_thread_send that should start a fresh provider session", "experience": "The user wanted a confused long-running thread to start over in the same thread without its old context; a plain send would keep feeding it the history.", "rule": "`freshContext: true` on t3_thread_send starts a new provider session in the same thread, like /clear.", "privacy": "commit-safe", "setup": {"role": "top", "priorTurns": [{"role": "user", "text": "The thread working on the CSV importer keeps reverting to the old column mapping from early in its history."}, {"role": "assistant", "text": "That thread has a long history with three different mappings in it, so the model keeps picking up the stale one."}], "mocks": {"t3_thread_send": {"threadId": "11111111-1111-4111-8111-111111111111", "link": "<t3-thread://v2/eeeeeeee-eeee-4eee-8eee-eeeeeeeeeeee/11111111-1111-4111-8111-111111111111>", "messageId": "msg-1", "runId": "run-1", "status": "starting", "delivery": "started"}}}, "prompt": "Send it the final mapping below and have it start over with a clean context in that same thread, so the old history stops leaking in: thread 11111111-1111-4111-8111-111111111111.\n\nFinal mapping: id -> customer_id, amt -> amount_cents, ts -> created_at.", "expect": {"calls": [{"tool": "t3_thread_send", "args": {"threadId": "11111111-1111-4111-8111-111111111111", "freshContext": true}}], "notCalls": ["delegate_task", "t3_thread_launch", "create_threads"]}, "source": {"request": "juliusmarminge (maintainer) request, 2026-11-03: fresh provider sessions in one T3 thread"}, "notes": "Pairs with thread-send-to-named-top-level-thread, where an ordinary send must not set freshContext."}
-{"id": "parallel-delegates-launch-async", "area": "orchestration", "kind": "bad", "pattern": "parallel delegates launched with batched waits", "experience": "Asked for two delegates in parallel, the agent batched two delegate_task mode:'wait' calls. The provider's MCP client ran them one at a time, so the second child started only after the first wait returned, while the agent told the user both were running.", "rule": "Parallel delegates: launch all with mode:\"async\" first; batched waits may run one at a time. A delegate runs only once its launch result says so.", "privacy": "commit-safe", "setup": {"role": "top", "context": "Repository: /home/user/app (acme/app). This is the local machine.", "world": {"repo": "acme/app", "branch": "main", "status": "", "files": {"src/thread-pool.ts": "export const workerCount = 4;\n", "src/task-queue.ts": "export const queueLimit = 10;\n"}}}, "prompt": "Have two GPT-6.1 Sol delegates in Codex review in parallel: one reviews src/thread-pool.ts, the other src/task-queue.ts. I need both reviews before you answer.", "expect": {"calls": [{"tool": "delegate_task", "args": {"task": "~thread-pool"}}, {"tool": "delegate_task", "args": {"task": "~task-queue"}}], "notCalls": ["t3_thread_launch", "create_threads"], "callsMustNot": [{"tool": "delegate_task", "args": {"mode": "wait"}}]}, "source": {"issue": "pingdotgg/t3code#23191"}, "notes": "Synthetic Acme scenario; no field transcript copied. The simulated MCP client does not serialize calls, so the case checks the launch mode, not dispatch timing."}
+{"id": "parallel-delegates-launch-async", "area": "orchestration", "kind": "bad", "pattern": "parallel delegates launched with batched waits", "experience": "Asked for two delegates in parallel, the agent batched two delegate_task mode:'wait' calls. The provider's MCP client ran them one at a time, so the second child started only after the first wait returned, while the agent told the user both were running.", "rule": "delegate_task mode: Default 'async'. Parallel children: all 'async'. 'wait' only if this turn needs the result.", "privacy": "commit-safe", "setup": {"role": "top", "context": "Repository: /home/user/app (acme/app). This is the local machine.", "world": {"repo": "acme/app", "branch": "main", "status": "", "files": {"src/thread-pool.ts": "export const workerCount = 4;\n", "src/task-queue.ts": "export const queueLimit = 10;\n"}}}, "prompt": "Have two GPT-6.1 Sol delegates in Codex review in parallel: one reviews src/thread-pool.ts, the other src/task-queue.ts. I need both reviews before you answer.", "expect": {"calls": [{"tool": "delegate_task", "args": {"task": "~thread-pool"}}, {"tool": "delegate_task", "args": {"task": "~task-queue"}}], "notCalls": ["t3_thread_launch", "create_threads"], "callsMustNot": [{"tool": "delegate_task", "args": {"mode": "wait"}}]}, "source": {"issue": "pingdotgg/t3code#23191"}, "notes": "Synthetic Acme scenario; no field transcript copied. The simulated MCP client does not serialize calls, so the case checks the launch mode, not dispatch timing."}
@@ -174,13 +174,13 @@ export const OrchestratorMcpDelegateTaskInput = Schema.Struct({
   isolation: Schema.optional(
     Schema.Literals(["shared", "worktree"]).annotate({
       description:
-        "'shared' (default): parent checkout. 'worktree': new prepared checkout from the parent commit, for a separate checkout or PR per child. Uncommitted edits stay out.",
+        "'shared' (default): parent checkout. 'worktree': new prepared checkout from the parent commit. Uncommitted edits stay out.",
     }),
   ),
   mode: Schema.optional(
     Schema.Literals(["async", "wait"]).annotate({
       description:
-        "Default 'async'. 'wait' only if this turn needs the result. A question or approval ends the wait. Parallel children: launch all async first.",
+        "Default 'async'. Parallel children: all 'async'. 'wait' only if this turn needs the result. A question or approval ends the wait.",
     }),
   ),
   timeoutMs: Schema.optional(Schema.Finite).annotate({
 
@@ -9,7 +9,6 @@ Ordinary coding tasks need no T3 tools.
 - Subagents: use your native tool when the child uses your provider, a model it offers, and no settings beyond yours (Claude \`Agent\`, \`run_in_background:false\`; Codex \`spawn_agent\`, then wait). Use \`delegate_task\` for another provider's model, user-asked settings, a separate checkout (\`isolation:"worktree"\`), or \`delegate_task\` by name. A native type on another provider's model counts too. Background agent: \`delegate_task\`, never a background \`Agent\`. Workflow only when asked.
 - Call \`orchestrator_capabilities\` once per thread, before the first \`delegate_task\`. Again only after an error or a user-named provider change. Settings go in \`target.options\`. Provider or model unavailable: say so. Never switch unasked, or fall back to native tools, Workflow, or CLIs. Never make a child's checkout in the shell or in \`task\`.
 - Every new delegate review or re-check is a new \`delegate_task\` (brief, findings, objections), never a \`t3_thread_send\`. Fix small review findings yourself; start no delegate for them. When told to proceed without a delegate, or to run fewer, \`task_cancel\` the extras. Start no replacement.
-- Parallel delegates: launch all with \`mode:"async"\` first; batched waits may run one at a time. A delegate runs only once its launch result says so.
 - Follow a running delegate's \`next\`. Do not poll it (\`task_status\`, \`sleep\`, watchers, Monitor, ScheduleWakeup). Stop a delegate run you replace or no longer need with \`task_cancel\`, never \`t3_thread_interrupt\` on a \`childThreadId\`.
 - If you are a subagent or child, do the work yourself. Start no subagents unless your task says to.`,
   `- \`t3_thread_launch\` and \`create_threads\` make new top-level threads, only when the user asks for a new thread. "Subagent", "delegate", and "parallel" never mean one. Worktree thread: set \`workspaceStrategy\`. Honor a requested base. Otherwise, independent work uses the default branch as \`remote/branch\` with \`startFromOrigin:true\`; with no remote, use the local default. Required unpublished commits and dependent work use their local base. Shell worktrees do not bind it, and no checkout setup in its prompt. No \`workspaceStrategy\`: project root, not your worktree.
Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,5 @@`
`1`	`1`	`{`
`2`		`- "claudeSystemAppendBytes": 5747,`
`3`		`- "codexAdditionalContextBytes": 7477,`
`4`		`- "mcpToolListJsonBytes": 48260`
	`2`	`+ "claudeSystemAppendBytes": 5597,`
	`3`	`+ "codexAdditionalContextBytes": 7327,`
	`4`	`+ "mcpToolListJsonBytes": 48208`
`5`	`5`	`}`