diff --git a/snapshots/session/cua-ptc/consent-fixture.mjs b/snapshots/session/cua-ptc/consent-fixture.mjs
index bc66ccaa28..3e6dd4064c 100644
--- a/snapshots/session/cua-ptc/consent-fixture.mjs
+++ b/snapshots/session/cua-ptc/consent-fixture.mjs
@@ -1,14 +1,20 @@
-/** Copy the shared native substitute into this replay's private execution directory. */
-import { chmod, copyFile } from 'node:fs/promises'
+/** Own a private native substitute for the PTC result replay. */
+import { chmod, copyFile, unlink } from 'node:fs/promises'
 import { join } from 'node:path'
-import { apply as consent } from '../cua-native/consent-fixture.mjs'
+import { startFixtureHost } from '../cua-native/fixture-host.mjs'
 export const name = 'cua-ptc-fixture'
 export const inject = ['userQuestions']
 
-/** Prepare the owned helper before answering native application consent. */
+/** Prepare the helper and retire its service before removing the private executable. */
 export async function apply(ctx) {
   const helper = join(process.cwd(), 'native-helper.mjs')
   await copyFile(new URL('../cua-native/workspace/native-helper.mjs', import.meta.url), helper)
   await chmod(helper, 0o700)
-  await consent(ctx)
+  const close = await startFixtureHost(helper)
+  ctx.effect(() => async () => {
+    try { await close() } finally { await unlink(helper) }
+  })
+  ctx.on('user-questions/request', async request => ({ answers: request.questions.map(question => ({
+    id: question.id, selected: ['Allow for this task'],
+  })) }))
 }
diff --git a/snapshots/session/cua-ptc/session.v4.jsonl b/snapshots/session/cua-ptc/session.v4.jsonl
index 847ed4ad7b..9d53c759a2 100644
--- a/snapshots/session/cua-ptc/session.v4.jsonl
+++ b/snapshots/session/cua-ptc/session.v4.jsonl
@@ -8,220 +8,24 @@
 {"type":"step/start","data":{"turn":1,"step":1}}
 {"type":"system/message","data":{"turn":1,"step":1,"message":{"role":"system","content":[{"type":"text","text":"{{system}}"}],"source":{"kind":"system-prompt"},"id":"{{message:2}}"}},"surfaceOp":"append"}
 {"type":"user/message","data":{"content":[{"type":"text","text":"Use tools.cua from Node PTC to select Fixture, read its AX state and capture window 7. Verify the direct native result fields and PNG bytes without printing the encoded image."}],"source":{"kind":"user"},"role":"user","id":"{{message:1}}"},"surfaceOp":"append"}
-{"type":"user/message","data":{"content":[{"type":"text","text":"Use tools.cua from Node PTC to select Fixture, read its AX state and capture window 7. Verify the direct native result fields and PNG bytes without printing the encoded image."}],"source":{"kind":"runtime-context","form":"snapshot","sections":[{"name":"working-directory:current","text":"Current working directory: \"{{cwd}}\"."},{"name":"sandbox:policy","text":"Current DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations."},{"name":"approval:policy","text":"Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}]},"role":"user","id":"{{message:3}}"},"surfaceOp":"append"}
+{"type":"user/message","data":{"content":[{"type":"text","text":"Current runtime context. This snapshot supersedes earlier runtime-context snapshots.\n\nCurrent working directory: \"{{cwd}}\".\n\nCurrent DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations.\n\nApproval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}],"source":{"kind":"runtime-context","form":"snapshot","sections":[{"name":"working-directory:current","text":"Current working directory: \"{{cwd}}\"."},{"name":"sandbox:policy","text":"Current DSH file policy: danger-full-access. The DSH file sandbox does not restrict file modifications by available operations."},{"name":"approval:policy","text":"Approval prompts are disabled in this session: actions that require approval are rejected automatically — do not request sandbox escalation (do not set `sandbox_permissions`)."}]},"role":"user","id":"{{message:3}}"},"surfaceOp":"append"}
 {"type":"request/header","data":{"header":{"config":{"provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"tools":"{{tools}}"},"reason":"initial"}}
 {"type":"request/context","data":{"provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"}}
-{"type":"session/title","data":{"title":"Inspect CUA capabilities, select the","messageSeqs":[8],"source":{"kind":"fallback"}}}
-{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"cua-native-1","name":"cua","arguments":"{\"method\":\"getCapabilities\",\"params\":{}}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:4}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1791860524557,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"chunk","time":1791860524557,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"cua-native-1","name":"cua","arguments":"{\"method\":\"getCapabilities\",\"params\":{}}"}}},{"type":"chunk","time":1791860524557,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1791860524557,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
-{"type":"tool/call","data":{"turn":1,"step":1,"callId":"cua-native-1","name":"cua","arguments":"{\"method\":\"getCapabilities\",\"params\":{}}"}}
-{"type":"tool/result","data":{"turn":1,"step":1,"message":{"role":"tool","source":{"kind":"tool","callId":"cua-native-1"},"toolCallId":"cua-native-1","content":[{"type":"text","text":"{\"platform\":\"macos\",\"sessionLocked\":false,\"permissions\":{\"accessibility\":true,\"screenRecording\":true},\"methods\":[\"getCapabilities\",\"listApps\",\"getApp\",\"activate\",\"show\",\"listWindows\",\"getState\",\"hover\",\"click\",\"setValue\",\"typeText\",\"pressKey\",\"scroll\",\"drag\",\"screenshot\"],\"coordinateSpace\":\"window-points\",\"browser\":false}"}],"isError":false,"id":"{{message:5}}"}},"sourceEventSeqs":[14],"surfaceOp":"append"}
+{"type":"session/title","data":{"title":"Use tools.cua from Node PTC","messageSeqs":[8],"source":{"kind":"fallback"}}}
+{"type":"assistant/message","data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"cua-ptc-native-result","name":"run_code","arguments":"{\"code\":\"const { Buffer } = await import('node:buffer');\\nconst app = await tools.cua({ method: 'getApp', params: { selector: 'test.fixture' } });\\nconst state = await tools.cua({ method: 'getState', params: { appHandle: app.appHandle, windowId: 7 } });\\nconst shot = await tools.cua({ method: 'screenshot', params: { appHandle: app.appHandle, windowId: 7 } });\\nconst bytes = Buffer.from(shot.data, 'base64');\\nreturn { appHandle: app.appHandle, hasIncrement: state.tree.includes('Increment'), pngBytes: bytes.length, signature: bytes.subarray(0, 8).toString('hex'), imageWidth: shot.attachment.width, imageHeight: shot.attachment.height };\",\"description\":\"Read native CUA values and receive one screenshot\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:4}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1791864698727,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"chunk","time":1791864698727,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"cua-ptc-native-result","name":"run_code","arguments":"{\"code\":\"const { Buffer } = await import('node:buffer');\\nconst app = await tools.cua({ method: 'getApp', params: { selector: 'test.fixture' } });\\nconst state = await tools.cua({ method: 'getState', params: { appHandle: app.appHandle, windowId: 7 } });\\nconst shot = await tools.cua({ method: 'screenshot', params: { appHandle: app.appHandle, windowId: 7 } });\\nconst bytes = Buffer.from(shot.data, 'base64');\\nreturn { appHandle: app.appHandle, hasIncrement: state.tree.includes('Increment'), pngBytes: bytes.length, signature: bytes.subarray(0, 8).toString('hex'), imageWidth: shot.attachment.width, imageHeight: shot.attachment.height };\",\"description\":\"Read native CUA values and receive one screenshot\"}"}}},{"type":"chunk","time":1791864698727,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1791864698727,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
+{"type":"tool/call","data":{"turn":1,"step":1,"callId":"cua-ptc-native-result","name":"run_code","arguments":"{\"code\":\"const { Buffer } = await import('node:buffer');\\nconst app = await tools.cua({ method: 'getApp', params: { selector: 'test.fixture' } });\\nconst state = await tools.cua({ method: 'getState', params: { appHandle: app.appHandle, windowId: 7 } });\\nconst shot = await tools.cua({ method: 'screenshot', params: { appHandle: app.appHandle, windowId: 7 } });\\nconst bytes = Buffer.from(shot.data, 'base64');\\nreturn { appHandle: app.appHandle, hasIncrement: state.tree.includes('Increment'), pngBytes: bytes.length, signature: bytes.subarray(0, 8).toString('hex'), imageWidth: shot.attachment.width, imageHeight: shot.attachment.height };\",\"description\":\"Read native CUA values and receive one screenshot\"}"}}
+{"type":"tool/ptc-dispatch-start","data":{"rootCallId":"cua-ptc-native-result","parentCallId":"cua-ptc-native-result","subCallId":"cua-ptc-native-result:ptc:1","name":"cua","arguments":{"method":"getApp","params":{"selector":"test.fixture"}}}}
+{"type":"tool/ptc-dispatch","data":{"rootCallId":"cua-ptc-native-result","parentCallId":"cua-ptc-native-result","subCallId":"cua-ptc-native-result:ptc:1","name":"cua","arguments":{"method":"getApp","params":{"selector":"test.fixture"}},"isError":false,"content":[{"type":"text","text":"{\"appHandle\":\"fixture-app\",\"pid\":9,\"name\":\"Fixture\",\"bundleId\":\"test.fixture\"}"}]}}
+{"type":"tool/ptc-dispatch-start","data":{"rootCallId":"cua-ptc-native-result","parentCallId":"cua-ptc-native-result","subCallId":"cua-ptc-native-result:ptc:2","name":"cua","arguments":{"method":"getState","params":{"appHandle":"fixture-app","windowId":7}}}}
+{"type":"tool/ptc-dispatch","data":{"rootCallId":"cua-ptc-native-result","parentCallId":"cua-ptc-native-result","subCallId":"cua-ptc-native-result:ptc:2","name":"cua","arguments":{"method":"getState","params":{"appHandle":"fixture-app","windowId":7}},"isError":false,"content":[{"type":"text","text":"{\"appHandle\":\"fixture-app\",\"pid\":9,\"windowId\":7,\"snapshotId\":\"fixture-snapshot-1\",\"tree\":\"AX scope=window offsets=UTF-16\\n- [0] AXButton \\\"Increment\\\"\\n- [1] AXTextField valueWritable=true selectionWritable=true value=\\\"\\\" placeholder=\\\"Fixture text\\\"\\n- AXStaticText \\\"Count: 0\\\"\\n- [2] AXMenuBarItem \\\"File\\\"\\nMenu contents omitted; request includeMenus=true to expand.\",\"windows\":[{\"windowId\":7,\"pid\":9,\"appName\":\"Fixture\",\"title\":\"CUA fixture\",\"bounds\":{\"x\":40,\"y\":60,\"width\":320,\"height\":200},\"isOnScreen\":true,\"onCurrentSpace\":true}],\"truncated\":false}"}]}}
+{"type":"tool/ptc-dispatch-start","data":{"rootCallId":"cua-ptc-native-result","parentCallId":"cua-ptc-native-result","subCallId":"cua-ptc-native-result:ptc:3","name":"cua","arguments":{"method":"screenshot","params":{"appHandle":"fixture-app","windowId":7}}}}
+{"type":"tool/ptc-dispatch","data":{"rootCallId":"cua-ptc-native-result","parentCallId":"cua-ptc-native-result","subCallId":"cua-ptc-native-result:ptc:3","name":"cua","arguments":{"method":"screenshot","params":{"appHandle":"fixture-app","windowId":7}},"isError":false,"content":[{"type":"text","text":"{\"pixelWidth\":1,\"pixelHeight\":1,\"windowId\":7,\"bounds\":{\"x\":40,\"y\":60,\"width\":320,\"height\":200},\"coordinateSpace\":\"window-points\"}"},{"type":"image","attachment":{"attachmentId":"sha256:999f1d1527ee7e79266f16add5430fff76b1225d742464a5b1ff1f02971bb8ee","mediaType":"image/png","width":1,"height":1,"bytes":90}}]}}
+{"type":"tool/result","data":{"turn":1,"step":1,"message":{"role":"tool","source":{"kind":"tool","callId":"cua-ptc-native-result"},"toolCallId":"cua-ptc-native-result","content":[{"type":"text","text":"{\n  \"appHandle\": \"fixture-app\",\n  \"hasIncrement\": true,\n  \"pngBytes\": 90,\n  \"signature\": \"89504e470d0a1a0a\",\n  \"imageWidth\": 1,\n  \"imageHeight\": 1\n}"}],"isError":false,"id":"{{message:5}}"}},"sourceEventSeqs":[14],"surfaceOp":"append"}
+{"type":"agent/inbox/spliced","data":{"target":"next-step","start":0,"inserted":[{"content":[{"type":"text","text":"{\"pixelWidth\":1,\"pixelHeight\":1,\"windowId\":7,\"bounds\":{\"x\":40,\"y\":60,\"width\":320,\"height\":200},\"coordinateSpace\":\"window-points\"}"},{"type":"image","attachment":{"attachmentId":"sha256:999f1d1527ee7e79266f16add5430fff76b1225d742464a5b1ff1f02971bb8ee","mediaType":"image/png","width":1,"height":1,"bytes":90}}],"source":{"kind":"ptc-mode"},"role":"user","id":"{{message:6}}"}]}}
 {"type":"step/end","data":{"turn":1,"step":1}}
+{"type":"agent/inbox/spliced","data":{"target":"next-step","start":0,"removedCount":1,"inserted":[]}}
 {"type":"step/start","data":{"turn":1,"step":2}}
-{"type":"assistant/message","data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"tool-call","id":"cua-native-2","name":"cua","arguments":"{\"method\":\"getApp\",\"params\":{\"selector\":\"test.fixture\"}}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:6}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1791860525440,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"chunk","time":1791860525440,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"cua-native-2","name":"cua","arguments":"{\"method\":\"getApp\",\"params\":{\"selector\":\"test.fixture\"}}"}}},{"type":"chunk","time":1791860525440,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1791860525440,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
-{"type":"tool/call","data":{"turn":1,"step":2,"callId":"cua-native-2","name":"cua","arguments":"{\"method\":\"getApp\",\"params\":{\"selector\":\"test.fixture\"}}"}}
-{"type":"tool/result","data":{"turn":1,"step":2,"message":{"role":"tool","source":{"kind":"tool","callId":"cua-native-2"},"toolCallId":"cua-native-2","content":[{"type":"text","text":"{\"appHandle\":\"fixture-app\",\"pid\":9,\"name\":\"Fixture\",\"bundleId\":\"test.fixture\"}"}],"isError":false,"id":"{{message:7}}"}},"sourceEventSeqs":[19],"surfaceOp":"append"}
+{"type":"user/message","data":{"content":[{"type":"text","text":"{\"pixelWidth\":1,\"pixelHeight\":1,\"windowId\":7,\"bounds\":{\"x\":40,\"y\":60,\"width\":320,\"height\":200},\"coordinateSpace\":\"window-points\"}"},{"type":"image","attachment":{"attachmentId":"sha256:999f1d1527ee7e79266f16add5430fff76b1225d742464a5b1ff1f02971bb8ee","mediaType":"image/png","width":1,"height":1,"bytes":90}}],"source":{"kind":"ptc-mode"},"role":"user","id":"{{message:6}}"},"surfaceOp":"append"}
+{"type":"assistant/message","data":{"turn":1,"step":2,"message":{"role":"assistant","content":[{"type":"text","text":"Received native CUA values and one PNG screenshot through PTC. The PNG is 90 bytes with signature 89504e470d0a1a0a."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:7}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1791864699463,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"chunk","time":1791864699463,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"Received native CUA values and one PNG screenshot through PTC. The PNG is 90 bytes with signature 89504e470d0a1a0a."}}},{"type":"chunk","time":1791864699463,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1791864699463,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
 {"type":"step/end","data":{"turn":1,"step":2}}
-{"type":"step/start","data":{"turn":1,"step":3}}
-{"type":"assistant/message","data":{"turn":1,"step":3,"message":{"role":"assistant","content":[{"type":"tool-call","id":"cua-native-3","name":"cua","arguments":"{\"method\":\"getState\",\"params\":{\"appHandle\":\"fixture-app\",\"windowId\":7,\"includeMenus\":true,\"details\":true}}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:8}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1791860525469,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"chunk","time":1791860525469,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"cua-native-3","name":"cua","arguments":"{\"method\":\"getState\",\"params\":{\"appHandle\":\"fixture-app\",\"windowId\":7,\"includeMenus\":true,\"details\":true}}"}}},{"type":"chunk","time":1791860525469,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1791860525469,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
-{"type":"tool/call","data":{"turn":1,"step":3,"callId":"cua-native-3","name":"cua","arguments":"{\"method\":\"getState\",\"params\":{\"appHandle\":\"fixture-app\",\"windowId\":7,\"includeMenus\":true,\"details\":true}}"}}
-{"type":"tool/result","data":{"turn":1,"step":3,"message":{"role":"tool","source":{"kind":"tool","callId":"cua-native-3"},"toolCallId":"cua-native-3","content":[{"type":"text","text":"{\"appHandle\":\"fixture-app\",\"pid\":9,\"windowId\":7,\"snapshotId\":\"fixture-snapshot-1\",\"tree\":\"AX scope=window offsets=UTF-16 bounds=global-points\\n- [0] AXButton \\\"Increment\\\" id=\\\"increment\\\" actions=[\\\"AXPress\\\"] bounds=[60,80,100,20]\\n- [1] AXTextField valueWritable=true selectionWritable=true value=\\\"\\\" placeholder=\\\"Fixture text\\\"\\n- AXStaticText \\\"Count: 0\\\"\\n- [2] AXMenuBarItem \\\"File\\\"\\n  - [3] AXMenuItem \\\"Fixture command\\\"\",\"windows\":[{\"windowId\":7,\"pid\":9,\"appName\":\"Fixture\",\"title\":\"CUA fixture\",\"bounds\":{\"x\":40,\"y\":60,\"width\":320,\"height\":200},\"isOnScreen\":true,\"onCurrentSpace\":true}],\"truncated\":false}"}],"isError":false,"id":"{{message:9}}"}},"sourceEventSeqs":[24],"surfaceOp":"append"}
-{"type":"step/end","data":{"turn":1,"step":3}}
-{"type":"step/start","data":{"turn":1,"step":4}}
-{"type":"assistant/message","data":{"turn":1,"step":4,"message":{"role":"assistant","content":[{"type":"tool-call","id":"cua-native-4","name":"cua","arguments":"{\"method\":\"click\",\"params\":{\"appHandle\":\"fixture-app\",\"snapshotId\":\"fixture-snapshot-1\",\"elementIndex\":0}}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:10}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1791860525486,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"chunk","time":1791860525486,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"cua-native-4","name":"cua","arguments":"{\"method\":\"click\",\"params\":{\"appHandle\":\"fixture-app\",\"snapshotId\":\"fixture-snapshot-1\",\"elementIndex\":0}}"}}},{"type":"chunk","time":1791860525486,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1791860525486,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
-{"type":"tool/call","data":{"turn":1,"step":4,"callId":"cua-native-4","name":"cua","arguments":"{\"method\":\"click\",\"params\":{\"appHandle\":\"fixture-app\",\"snapshotId\":\"fixture-snapshot-1\",\"elementIndex\":0}}"}}
-{"type":"tool/result","data":{"turn":1,"step":4,"message":{"role":"tool","source":{"kind":"tool","callId":"cua-native-4"},"toolCallId":"cua-native-4","content":[{"type":"text","text":"{\"dispatched\":true,\"verified\":false}"}],"isError":false,"id":"{{message:11}}"}},"sourceEventSeqs":[29],"surfaceOp":"append"}
-{"type":"step/end","data":{"turn":1,"step":4}}
-{"type":"step/start","data":{"turn":1,"step":5}}
-{"type":"assistant/message","data":{"turn":1,"step":5,"message":{"role":"assistant","content":[{"type":"tool-call","id":"cua-native-5","name":"cua","arguments":"{\"method\":\"getState\",\"params\":{\"appHandle\":\"fixture-app\",\"windowId\":7}}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:12}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1791860525502,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"chunk","time":1791860525502,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"cua-native-5","name":"cua","arguments":"{\"method\":\"getState\",\"params\":{\"appHandle\":\"fixture-app\",\"windowId\":7}}"}}},{"type":"chunk","time":1791860525502,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1791860525502,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
-{"type":"tool/call","data":{"turn":1,"step":5,"callId":"cua-native-5","name":"cua","arguments":"{\"method\":\"getState\",\"params\":{\"appHandle\":\"fixture-app\",\"windowId\":7}}"}}
-{"type":"tool/result","data":{"turn":1,"step":5,"message":{"role":"tool","source":{"kind":"tool","callId":"cua-native-5"},"toolCallId":"cua-native-5","content":[{"type":"text","text":"{\"appHandle\":\"fixture-app\",\"pid\":9,\"windowId\":7,\"snapshotId\":\"fixture-snapshot-2\",\"tree\":\"AX scope=window offsets=UTF-16\\n- [0] AXButton \\\"Increment\\\"\\n- [1] AXTextField valueWritable=true selectionWritable=true value=\\\"\\\" placeholder=\\\"Fixture text\\\"\\n- AXStaticText \\\"Count: 1\\\"\\n- [2] AXMenuBarItem \\\"File\\\"\\nMenu contents omitted; request includeMenus=true to expand.\",\"windows\":[{\"windowId\":7,\"pid\":9,\"appName\":\"Fixture\",\"title\":\"CUA fixture\",\"bounds\":{\"x\":40,\"y\":60,\"width\":320,\"height\":200},\"isOnScreen\":true,\"onCurrentSpace\":true}],\"truncated\":false}"}],"isError":false,"id":"{{message:13}}"}},"sourceEventSeqs":[34],"surfaceOp":"append"}
-{"type":"step/end","data":{"turn":1,"step":5}}
-{"type":"step/start","data":{"turn":1,"step":6}}
-{"type":"assistant/message","data":{"turn":1,"step":6,"message":{"role":"assistant","content":[{"type":"tool-call","id":"cua-native-6","name":"cua","arguments":"{\"method\":\"screenshot\",\"params\":{\"appHandle\":\"fixture-app\",\"windowId\":7}}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:14}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1791860525518,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}},{"type":"chunk","time":1791860525518,"chunk":{"type":"block-end","index":0,"block":{"type":"tool-call","id":"cua-native-6","name":"cua","arguments":"{\"method\":\"screenshot\",\"params\":{\"appHandle\":\"fixture-app\",\"windowId\":7}}"}}},{"type":"chunk","time":1791860525518,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1791860525518,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}]},"surfaceOp":"append"}
-{"type":"tool/call","data":{"turn":1,"step":6,"callId":"cua-native-6","name":"cua","arguments":"{\"method\":\"screenshot\",\"params\":{\"appHandle\":\"fixture-app\",\"windowId\":7}}"}}
-{"type":"tool/result","data":{"turn":1,"step":6,"message":{"role":"tool","source":{"kind":"tool","callId":"cua-native-6"},"toolCallId":"cua-native-6","content":[{"type":"text","text":"{\"pixelWidth\":1,\"pixelHeight\":1,\"windowId\":7,\"bounds\":{\"x\":40,\"y\":60,\"width\":320,\"height\":200},\"coordinateSpace\":\"window-points\"}"},{"type":"image","attachment":{"attachmentId":"sha256:999f1d1527ee7e79266f16add5430fff76b1225d742464a5b1ff1f02971bb8ee","mediaType":"image/png","width":1,"height":1,"bytes":90}}],"isError":false,"id":"{{message:15}}"}},"sourceEventSeqs":[39],"surfaceOp":"append"}
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-{"type":"assistant/message","data":{"turn":1,"step":43,"message":{"role":"assistant","content":[{"type":"text","text":"Observed Count: 4 after hovering, observing and clicking the revealed control. Moving away dismissed the hover information. Geometry conflicts rejected capture and coordinate gestures; the advertised AX button action remained available. No automatic activation or input retry was requested."}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash-vision-exp"},"id":"{{message:88}}"},"usage":{"inputTokens":3,"outputTokens":3},"stream":[{"type":"chunk","time":1791860526185,"chunk":{"type":"block-start","index":0,"blockType":"text"}},{"type":"chunk","time":1791860526185,"chunk":{"type":"block-end","index":0,"block":{"type":"text","text":"Observed Count: 4 after hovering, observing and clicking the revealed control. Moving away dismissed the hover information. Geometry conflicts rejected capture and coordinate gestures; the advertised AX button action remained available. No automatic activation or input retry was requested."}}},{"type":"chunk","time":1791860526185,"chunk":{"type":"usage","usage":{"inputTokens":3,"outputTokens":3}}},{"type":"chunk","time":1791860526185,"chunk":{"type":"finish","reason":{"kind":"stop"}}}]},"surfaceOp":"append"}
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 {"type":"turn/end","data":{"turn":1,"reason":{"kind":"completed"}}}
diff --git a/snapshots/session/cua-ptc/system-prompt.expected.md b/snapshots/session/cua-ptc/system-prompt.expected.md
index 660333b9a5..09816c3808 100644
--- a/snapshots/session/cua-ptc/system-prompt.expected.md
+++ b/snapshots/session/cua-ptc/system-prompt.expected.md
@@ -5,6 +5,8 @@ You are a coding assistant powered by the deepseek-v4-flash-vision-exp model.
 Verify your work by running the code or tests. Keep answers brief and factual.
 
 
+`run_code` is the only tool you can call directly — a tool call naming any other tool fails. Reach every tool the SDK declares below from inside the program.
+
 Check the [exit code: N] marker on every bash result; investigate failures before moving on.
 
 Use the read tool — not shell commands like cat — to inspect text files. Use offset and limit to continue reading large files.
@@ -69,3 +71,519 @@ Await operations sequentially. After input, read fresh state to verify the effec
 Hover moves the visible system cursor without pressing a button. It requires the target point to be unobscured in the foreground app. FOREGROUND_REQUIRED requires explicit activation or raising and a fresh observation before retrying. Returning, AX reads and screenshots do not restore the previous point. Wait for the application's hover delay, observe, then hover into the revealed controls before clicking. Use successive hover calls for intermediate points. Other input or application changes can interrupt the interaction; app objects do not reserve applications between calls.
 
 Use selectText only on controls advertising selectionWritable. It selects a unique literal occurrence, or places the cursor before/after it; prefix and suffix must be immediately adjacent. AMBIGUOUS_TEXT requires more context; TEXT_NOT_FOUND or SELECTION_CHANGED requires a fresh observation before deciding on input. Left clicks support single/double clicks; right and middle clicks support single clicks. Modified clicks use pointer input. Keypad names such as KP_0 and KP_Enter retain their physical key identity. Window objects expose observation and pointer/AX actions; keyboard input remains app-scoped and follows current focus. Scroll deltas are integer lines from -10 to 10; positive values reveal content above or left. Paste delivers plain text or HTML through the application's enabled standard Paste menu command. Original clipboard formats are restored if the clipboard still belongs to this paste; a later copy is preserved. Unsupported Paste commands fail without typing fallback. CLIPBOARD_CHANGED means another writer intervened; observe before deciding on further input. Browser applications can be controlled with getApp like other native apps; browser tabs are unavailable. Installed-app search covers standard macOS application directories; use an absolute application path for another location. Launch does not restore a window or document, and cancellation may leave an application already started. The execution host must install the object API and own variable persistence; this plugin does not preload a cua global. In persistent PTC, use the host-provided initialization snippet below once. Its installation-owned file URL works independently of the project directory. Retain app objects between calls. Observation methods emit by default and also return their value. Use void await app.getAXState() to avoid a duplicate REPL completion, or pass emit:false and print the returned text once. End screenshot calls with void await app.getScreenshot() or void await app.getAXStateAndScreenshot() so image bytes are not serialized as the program completion value.
+
+## Writing code for run_code
+
+`run_code` takes two required arguments: `description`, a short summary of what the program does, and `code`, the program to execute. The declarations below are SDK bindings for this program. A declaration does not make its name a directly callable tool; only names supplied as separate tool schemas may be called directly. When no separate `bash` schema is supplied, invoke a declared `bash` binding inside `run_code`:
+
+`run_code({ description: "Show current directory", code: "console.log(await tools.bash({ description: 'Show current directory', command: 'pwd' }))" })`
+
+Inside the program:
+
+- Call tools as `await tools.name(args)` — quoted access for exotic names: `tools["my-tool"](args)`. Every call resolves to the tool's typed canonical JSON value. Tool arguments must be lossless JSON.
+- A FAILED tool call rejects with `ToolCallError`, whose `toolName` identifies the failed tool and whose `message` is human-readable — `try/catch` it to handle and continue.
+- Independent read-only calls MAY overlap under `Promise.all` (safe calls run concurrently; mutating calls run alone, in submission order). Sequence dependent work with `await`.
+- Only values emitted as program output enter the conversation. A successful tool result containing an image is attached after the run so you can inspect it on the next step; every other intermediate result stays out of the conversation, so extract just what you need.
+
+Program-only SDK bindings:
+
+```ts
+type JsonValue = null | boolean | number | string | JsonValue[] | { [key: string]: JsonValue }
+
+interface ToolArgsMap {
+  /** Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell; pass `workdir` instead of using `cd`. Managed `$DSH_*` variables expose current harness environment facts. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Provide `description` before `command` in the arguments. Before any delete or move, verify that the resolved absolute target path is the intended one; never run it against a computed path you have not checked. An unset variable expands to an empty string, so guard variables in such paths with `${VAR:?}`. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]`, a policy denial: do not retry another way. */
+  bash: {
+    /** Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: "ls" → "List files in current directory"; "git status" → "Show working tree status"; "npm install" → "Install package dependencies". */
+    description: string;
+    /** The bash command to execute. */
+    command: string;
+    /** Timeout in milliseconds. The executor applies its configured default and cap; on expiry the command moves to the background as a job instead of being killed. */
+    timeoutMs?: number;
+    /** Working directory for this command. Defaults to the session workspace; a relative path is resolved against it. */
+    workdir?: string;
+    /** Run in the background and return a job id immediately (collect with job_output, stop with job_kill). No timeout applies. */
+    run_in_background?: boolean;
+    /** The narrowest wider sandbox mode for a one-shot retry of the exact command the sandbox just denied; the retry asks the user for approval. */
+    sandbox_permissions?: "workspace-write" | "danger-full-access";
+    /** Required with sandbox_permissions: one sentence for the user explaining why this exact command needs the wider access. Use the language of the user’s current request. */
+    justification?: string;
+  } & Record<string, JsonValue>;
+  /** Create a persisted goal that keeps this session working across automatic continuation rounds. Use it when the direct human request is a long-running objective, even if the user did not say "goal"; not for single-turn work. */
+  create_goal: {
+    /** The concrete completion objective inferred from the direct human request. */
+    objective: string;
+    /** Optional positive safe-integer limit on automatic continuation rounds. */
+    max_goal_rounds?: number;
+  } & Record<string, JsonValue>;
+  /** Inspect macOS permissions, select an application and window, read AX state, capture screenshots or dispatch input. Use appHandle from getApp; verify actions by reading fresh state. */
+  cua: unknown;
+  /** Edit an existing UTF-8 text file by replacing literal text. */
+  edit: {
+    /** Path to edit, resolved by the filesystem backend. Provide `file_path` before `old_string` and `new_string` in the arguments. */
+    file_path: string;
+    /** Literal text to replace. */
+    old_string: string;
+    /** Literal replacement text. Use an empty string to delete the match. */
+    new_string: string;
+    /** Replace all matches. Defaults to false; when false, old_string must appear exactly once. */
+    replace_all?: boolean;
+    /** The narrowest wider sandbox mode for a one-shot retry of the exact operation the sandbox just denied; the retry asks the user for approval. */
+    sandbox_permissions?: "workspace-write" | "danger-full-access";
+    /** Required with sandbox_permissions: one sentence for the user explaining why this exact file operation needs the wider access. Use the language of the user’s current request. */
+    justification?: string;
+  } & Record<string, JsonValue>;
+  /** Use only in plan mode. Present your plan for the user's review and, on approval, leave plan mode. The user may approve (carry out the plan from your next step) or keep planning — their feedback comes back in the tool result; revise and present again. */
+  exit_plan_mode: {
+    /** The complete plan, as markdown, starting with a # heading that names it. */
+    plan: string;
+  } & Record<string, JsonValue>;
+  /** Read the current session goal, including the id and revision that update_goal requires. */
+  get_goal: Record<string, JsonValue>;
+  /** Find files, not directories, whose paths match a glob pattern, including hidden and ignored files. Returns up to 100 paths in modification-time order; a larger result keeps the first paths and reports where the complete list was saved. */
+  glob: {
+    /** Glob pattern to match file paths against (e.g. "**\/*.ts", "src/**\/*.test.js"). A pattern with no "/" matches the basename at any depth, so "*" and "*.ts" both search the whole tree; include a separator to anchor the depth. */
+    pattern: string;
+    /** Directory to search in. Defaults to the session workspace; a relative path resolves against it. */
+    path?: string;
+  } & Record<string, JsonValue>;
+  /** Search file contents with a ripgrep regular expression. Returns matching lines with line numbers, grouped by file. Returns up to 250 matches; a larger result reports where the complete match list was saved. */
+  grep: {
+    /** Regular expression to search for (ripgrep syntax). */
+    pattern: string;
+    /** File or directory to search. Defaults to the session workspace; a relative path resolves against it. */
+    path?: string;
+    /** One glob filter for which files to search (e.g. "*.ts", "*.{js,jsx}"). Not a list; negation is not supported. */
+    include?: string;
+  } & Record<string, JsonValue>;
+  /** Ask a subagent to stop its current work. This call returns without waiting for it to stop. You can continue a local direct child's conversation later with send_message. External executions stop permanently and cannot receive follow-ups. Subagents it started will keep running. */
+  interrupt_agent: {
+    /** The id of an agent created under you: your direct child or a deeper descendant. */
+    agent_id: string;
+  } & Record<string, JsonValue>;
+  /** Request cancellation of a running background job. */
+  job_kill: {
+    /** Job id returned by the tool that started the background work. */
+    job_id: string;
+    /** Optional short reason, recorded in the log and forwarded to the job. */
+    reason?: string;
+  } & Record<string, JsonValue>;
+  /** List your background jobs (running and finished) with their ids, kinds, and statuses. */
+  job_list: Record<string, JsonValue>;
+  /** Read a background job: output since the previous read for stream jobs, or the result of a finished final-output job. */
+  job_output: {
+    /** Job id returned by the tool that started the background work. */
+    job_id: string;
+    /** Block until the job finishes or the timeout expires; a timed-out wait leaves the job running. Defaults to false. */
+    wait?: boolean;
+    /** Max wait in milliseconds with wait: true. Defaults to and is capped by configuration. */
+    timeout_ms?: number;
+  } & Record<string, JsonValue>;
+  /** List subagents you started, with their ids, labels, and status. running means it is working; inactive means it is not currently working. You will be notified when a subagent finishes; there is no need to keep checking its status. Use send_message to continue the conversation. */
+  list_agents: {
+    /** children (default) lists direct children, which accept send_message in any status. descendants lists the whole tree below you with each entry's parent session id and depth; entries deeper than 1 accept only interrupt_agent. */
+    scope?: "children" | "descendants";
+  } & Record<string, JsonValue>;
+  /** Read a UTF-8 text file and return line-numbered content. */
+  read: {
+    /** Path to read, resolved by the filesystem backend. */
+    file_path: string;
+    /** 1-based first line to return. Defaults to 1. */
+    offset?: number;
+    /** Maximum number of lines to return. Defaults to 2000. */
+    limit?: number;
+  } & Record<string, JsonValue>;
+  /** Read a PNG/JPEG/WebP/GIF file and return the image itself. Large images are downscaled automatically; do not install image libraries or create thumbnails to inspect an image. */
+  read_image: {
+    /** Path to the image file, resolved by the filesystem backend. */
+    file_path: string;
+  } & Record<string, JsonValue>;
+  /** Send a message to an agent. A working agent receives it at its next step; an idle agent starts a new turn with it. Returns delivery confirmation, not the agent's answer. */
+  send_message: {
+    /** The agent id of your direct continuable child, or your direct parent when you are a resident continuable child. */
+    agent_id: string;
+    /** The message to deliver to the agent. */
+    message: string;
+  } & Record<string, JsonValue>;
+  /** Load the full instructions for a skill. Call it before acting on a task that names or clearly matches a skill in the session skill catalog. */
+  skill: {
+    /** The exact skill name from the available skills list. */
+    name: string;
+  } & Record<string, JsonValue>;
+  /** Delegate a self-contained task to a subagent (a separate agent that works in its own context) to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent returns its result, not its intermediate steps. This tool starts an independently managed subagent and immediately returns its id. The runtime notifies you when it finishes. The child reports results with `send_message`; use `send_message` to steer it while running or continue its conversation after it finishes. */
+  subagent: {
+    /** Initial child working directory. Relative paths use your current directory; omitted inherits it. Later directory changes in either agent are independent. */
+    cwd?: string;
+    /** A short (3-5 word) description of the delegated task, for display. */
+    description: string;
+    /** The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs. */
+    prompt: string;
+  } & Record<string, JsonValue>;
+  /** Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn). Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive its result, not its intermediate steps. This tool starts an independently managed subagent and immediately returns its id. The runtime notifies you when it finishes. The child reports results with `send_message`; use `send_message` to steer it while running or continue its conversation after it finishes. */
+  subagent_fork: {
+    /** Initial child working directory. Relative paths use your current directory; omitted inherits it. Later directory changes in either agent are independent. */
+    cwd?: string;
+    /** A short (3-5 word) description of the delegated task, for display. */
+    description: string;
+    /** The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new. */
+    prompt: string;
+  } & Record<string, JsonValue>;
+  /** Record and update a task list to plan multi-step work and show progress; skip it for trivial single-step tasks. Add one todo per concrete step before you start. While work remains, keep the todos being worked on `in_progress`, several only when work runs in parallel. Mark each todo `completed` as soon as it is done. */
+  todo_write: {
+    /** The COMPLETE task list, replacing any previous list. */
+    todos: ({
+      /** What the task is — a short imperative line. */
+      content: string;
+      /** pending (not started) | in_progress (now) | completed (done). */
+      status: "pending" | "in_progress" | "completed";
+    })[];
+  } & Record<string, JsonValue>;
+  /** Update the current goal. */
+  update_goal: {
+    /** Exact id returned by get_goal. */
+    goal_id: string;
+    /** Exact positive revision returned by get_goal. */
+    revision: number;
+    /** edit, pause, and resume require a direct top-level human request. complete and blocked are also allowed during an automatic continuation of this goal; blocked is rejected before the configured minimum round count. */
+    action: "edit" | "pause" | "resume" | "complete" | "blocked";
+    /** Replacement objective; valid only with action edit. */
+    objective?: string;
+    /** Replacement cap; valid only with action edit. */
+    max_goal_rounds?: number;
+    /** Required only with action blocked: the concrete condition that persisted across rounds and blocks progress. */
+    blocked_reason?: string;
+  } & Record<string, JsonValue>;
+  /** Fetch the content of a specific HTTP(S) URL and return it decoded to text. */
+  web_fetch: {
+    /** The HTTP(S) URL to fetch. */
+    url: string;
+  } & Record<string, JsonValue>;
+  /** Search the web for current information. Returns an optional summary answer and a list of source URLs. */
+  web_search: {
+    /** 1–4 search queries; their results are merged. */
+    queries: string[];
+  } & Record<string, JsonValue>;
+  /** Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn. Script-body hooks: - `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides. - `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. A stage throw drops that ITEM to `null` and skips its remaining stages. - `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`. - `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim. Misused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) end the whole script instead of producing `null`. The script has no filesystem, network, timer, or Node.js APIs; the agents do the work. */
+  workflow: {
+    /** The plain JavaScript body, not TypeScript and without an `export const meta` statement; top-level await is allowed. End with `return <value>`; the JSON-serializable value is this tool's result. */
+    script: string;
+    /** The workflow identity as plain JSON, not code. */
+    meta: {
+      /** Short kebab-case workflow name. */
+      name: string;
+      /** One-line description of what the workflow does. */
+      description: string;
+      /** Optional guidance on when this workflow applies. */
+      whenToUse?: string;
+      /** Optional phase declarations matched by phase() calls. */
+      phases?: ({
+        /** The phase title phase() calls match by exact string. */
+        title: string;
+        /** Optional one-line description of the phase. */
+        detail?: string;
+        /** Optional provider override this phase is expected to use. */
+        provider?: string;
+        /** Optional model override this phase is expected to use. */
+        model?: string;
+      } & Record<string, JsonValue>)[];
+    } & Record<string, JsonValue>;
+    /** Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {"files": [...]}). */
+    args?: Record<string, JsonValue>;
+    /** Run as a background job: return a job id immediately instead of waiting; the return value arrives with the completion notice. */
+    run_in_background?: boolean;
+  } & Record<string, JsonValue>;
+  /** Read the current working directory, or change it with cd. Relative paths use the current directory. Existing shells and running processes keep their own directories. */
+  working_directory: {
+    /** Existing directory to enter. Omit to read the current directory. */
+    cd?: string;
+  } & Record<string, JsonValue>;
+  /** Create or fully replace a UTF-8 text file. */
+  write: {
+    /** Path to write, resolved by the filesystem backend. Provide `file_path` before `content` in the arguments. */
+    file_path: string;
+    /** Full UTF-8 text content to write. */
+    content: string;
+    /** The narrowest wider sandbox mode for a one-shot retry of the exact operation the sandbox just denied; the retry asks the user for approval. */
+    sandbox_permissions?: "workspace-write" | "danger-full-access";
+    /** Required with sandbox_permissions: one sentence for the user explaining why this exact file operation needs the wider access. Use the language of the user’s current request. */
+    justification?: string;
+  } & Record<string, JsonValue>;
+}
+
+interface ToolOutputMap {
+  bash: {
+    kind: "background";
+    jobId: string;
+    cwd: string;
+  } | {
+    kind: "promoted";
+    cwd: string;
+    jobId: string;
+    timeoutMs: number;
+    output: string;
+  } | {
+    kind: "foreground";
+    cwd: string;
+    exitCode: number | null;
+    signal: string | null;
+    timedOut: boolean;
+    aborted: boolean;
+    stopped?: string;
+    timeoutMs: number;
+    stdout: {
+      text: string;
+      truncated: boolean;
+      spillPath?: string;
+    };
+    stderr: {
+      text: string;
+      truncated: boolean;
+      spillPath?: string;
+    };
+    sandbox?: {
+      mode: string;
+      denied: boolean;
+      enforcement?: string;
+      runnerFailed?: boolean;
+    };
+  };
+  create_goal: {
+    goal: null;
+  } | {
+    goal: {
+      id: string;
+      revision: number;
+      objective: string;
+      phase: "active" | "paused" | "blocked" | "complete";
+      roundsStarted: number;
+      maxGoalRounds: number;
+      blockedReason?: {
+        code: string;
+        message: string;
+      };
+    };
+    activation: "armed" | "disarmed";
+  };
+  cua: JsonValue;
+  edit: {
+    /** Canonical absolute path in the filesystem execution world. */
+    path: string;
+    before: string;
+    after: string;
+  };
+  exit_plan_mode: {
+    approved: boolean;
+  };
+  get_goal: {
+    goal: null;
+  } | {
+    goal: {
+      id: string;
+      revision: number;
+      objective: string;
+      phase: "active" | "paused" | "blocked" | "complete";
+      roundsStarted: number;
+      maxGoalRounds: number;
+      blockedReason?: {
+        code: string;
+        message: string;
+      };
+    };
+    activation: "armed" | "disarmed";
+  };
+  glob: {
+    root: string;
+    paths: string[];
+  };
+  grep: {
+    matches: {
+      path: string;
+      lineNumber: number;
+      line: string;
+    }[];
+  };
+  interrupt_agent: {
+    accepted: boolean;
+  };
+  job_kill: {
+    outcome: "cancellation-requested" | "already-finished";
+    job: {
+      id: string;
+      kind: string;
+      label: string;
+      status: "running" | "stopping" | "completed" | "killed" | "failed";
+      detail?: string;
+      startedAt: number;
+      finishedAt?: number;
+    };
+  };
+  job_list: ({
+    id: string;
+    kind: string;
+    label: string;
+    status: "running" | "stopping" | "completed" | "killed" | "failed";
+    detail?: string;
+    startedAt: number;
+    finishedAt?: number;
+  })[];
+  job_output: {
+    text: string;
+    job: {
+      id: string;
+      kind: string;
+      label: string;
+      status: "running" | "stopping" | "completed" | "killed" | "failed";
+      detail?: string;
+      startedAt: number;
+      finishedAt?: number;
+    };
+  };
+  list_agents: ({
+    kind: "child";
+    id: string;
+    label: string;
+    status: "running" | "inactive";
+    parent?: string;
+    depth?: number;
+  } | {
+    kind: "diagnostic";
+    id: string;
+    reason: "corrupt" | "unsupported" | "unavailable";
+    parent?: string;
+    depth?: number;
+  })[];
+  read: {
+    /** Canonical absolute path in the filesystem execution world. */
+    path: string;
+    offset: number;
+    lines: {
+      number: number;
+      text: string;
+    }[];
+    totalLines: number;
+  };
+  read_image: {
+    /** Canonical absolute path in the filesystem execution world. */
+    path: string;
+    image: {
+      attachmentId: string;
+      mediaType: "image/png" | "image/jpeg" | "image/webp" | "image/gif";
+      bytes: number;
+      width: number;
+      height: number;
+      name?: string;
+      originalDimensions?: {
+        width: number;
+        height: number;
+      };
+    };
+  };
+  send_message: {
+    messageId: string;
+  };
+  skill: {
+    name: string;
+    provider: string;
+    resourceBase?: {
+      kind: "directory";
+      path: string;
+    } | {
+      kind: "url";
+      url: string;
+    } | {
+      kind: "opaque";
+      description: string;
+    };
+    content: string;
+  };
+  subagent: {
+    kind: "activation";
+    subagentId: string;
+  };
+  subagent_fork: {
+    kind: "activation";
+    subagentId: string;
+  };
+  todo_write: {
+    todos: ({
+      content: string;
+      status: "pending" | "in_progress" | "completed";
+    })[];
+    counts: {
+      pending: number;
+      inProgress: number;
+      completed: number;
+    };
+  };
+  update_goal: {
+    goal: null;
+  } | {
+    goal: {
+      id: string;
+      revision: number;
+      objective: string;
+      phase: "active" | "paused" | "blocked" | "complete";
+      roundsStarted: number;
+      maxGoalRounds: number;
+      blockedReason?: {
+        code: string;
+        message: string;
+      };
+    };
+    activation: "armed" | "disarmed";
+  };
+  web_fetch: {
+    url: string;
+    statusCode: number;
+    body: {
+      kind: "html";
+      content: string;
+    } | {
+      kind: "text";
+      content: string;
+    };
+    truncated: boolean;
+  };
+  web_search: {
+    content?: string;
+    sources: {
+      url: string;
+      title?: string;
+      snippet?: string;
+      publishedAt?: string;
+    }[];
+    truncated: boolean;
+  };
+  workflow: {
+    kind: "background";
+    jobId: string;
+    runId: string;
+  } | {
+    kind: "foreground";
+    runId: string;
+    agentsStarted: number;
+    result: JsonValue;
+  };
+  working_directory: {
+    /** Current absolute working directory. */
+    cwd: string;
+  };
+  write: {
+    /** Canonical absolute path in the filesystem execution world. */
+    path: string;
+    operation: "create" | "update";
+    before: string | null;
+    after: string;
+  };
+}
+
+type ToolName = keyof ToolOutputMap
+
+declare class ToolCallError extends Error {
+  readonly name: "ToolCallError";
+  readonly toolName: ToolName;
+}
+
+declare const tools: {
+  [K in ToolName]: (args: ToolArgsMap[K]) => Promise<ToolOutputMap[K]>;
+}
+```
diff --git a/snapshots/session/cua-ptc/tool-schemas.expected.json b/snapshots/session/cua-ptc/tool-schemas.expected.json
index a26edfe9f4..e0b6795176 100644
--- a/snapshots/session/cua-ptc/tool-schemas.expected.json
+++ b/snapshots/session/cua-ptc/tool-schemas.expected.json
@@ -1,34 +1,26 @@
 {
   "initial": [
     {
-      "name": "bash",
-      "description": "Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell; pass `workdir` instead of using `cd`. Managed `$DSH_*` variables expose current harness environment facts. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Provide `description` before `command` in the arguments. Before any delete or move, verify that the resolved absolute target path is the intended one; never run it against a computed path you have not checked. An unset variable expands to an empty string, so guard variables in such paths with `${VAR:?}`. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]`, a policy denial: do not retry another way.",
+      "name": "run_code",
+      "description": "Execute a TypeScript program against the available tools. Takes two required arguments: `description`, a short summary of what the program does, and `code`, the program to execute. Call tools as `await tools.name(args)` per the declarations in the system prompt. Curate the program output. Image-bearing subtool results are attached after the run. The program is the body of an async TypeScript function; only erasable syntax is accepted, with no enum or namespaces. Type annotations are advisory. Top-level await and return are supported. Emit output with console.log(...) or return a lossless JSON value. Only printed values and the returned value become program output. Each call runs in a fresh Node process. Node APIs are available through await import(...). Relative paths use the supplied working directory; process.env starts empty. Direct filesystem access follows this execution's sandbox policy. Each program starts in the Session's current directory. Running programs keep their initial directory. A sandbox escalation approves this complete program for one execution only. Nested tools retain their own policies and approvals. Request wider access only after evidence of a denial. Earlier effects may already have completed: inspect them before explicitly retrying. Programs are never replayed automatically.",
       "parameters": {
         "type": "object",
         "properties": {
           "description": {
             "type": "string",
-            "description": "Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."
+            "description": "Clear, concise description of what this program does in active voice, 5-10 words (shown in the UI). Provide `description` before `code` in the arguments. Examples: \"Count TODO markers across packages\"; \"Read failing test and its fixture\"; \"Rename config key in every cordis.yml\"."
           },
-          "command": {
+          "code": {
             "type": "string",
-            "description": "The bash command to execute."
+            "description": "The TypeScript program to execute, following this tool's execution instructions."
           },
           "timeoutMs": {
             "type": "number",
-            "description": "Timeout in milliseconds. The executor applies its configured default and cap; on expiry the command moves to the background as a job instead of being killed."
-          },
-          "workdir": {
-            "type": "string",
-            "description": "Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."
-          },
-          "run_in_background": {
-            "type": "boolean",
-            "description": "Run in the background and return a job id immediately (collect with job_output, stop with job_kill). No timeout applies."
+            "description": "Positive elapsed-time budget in milliseconds, including nested tool and approval waits. Default 120000; capped at 600000. Zero does not disable the deadline."
           },
           "sandbox_permissions": {
             "type": "string",
-            "description": "The narrowest wider sandbox mode for a one-shot retry of the exact command the sandbox just denied; the retry asks the user for approval.",
+            "description": "Wider sandbox mode for this complete program execution; requires justification and approval.",
             "enum": [
               "workspace-write",
               "danger-full-access"
@@ -36,1468 +28,12 @@
           },
           "justification": {
             "type": "string",
-            "description": "Required with sandbox_permissions: one sentence for the user explaining why this exact command needs the wider access. Use the language of the user’s current request."
+            "description": "Reason this complete program needs wider access, shown to the user for approval. Use the language of the user’s current request."
           }
         },
         "required": [
           "description",
-          "command"
-        ]
-      }
-    },
-    {
-      "name": "create_goal",
-      "description": "Create a persisted goal that keeps this session working across automatic continuation rounds. Use it when the direct human request is a long-running objective, even if the user did not say \"goal\"; not for single-turn work.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "objective": {
-            "type": "string",
-            "description": "The concrete completion objective inferred from the direct human request."
-          },
-          "max_goal_rounds": {
-            "type": "number",
-            "description": "Optional positive safe-integer limit on automatic continuation rounds."
-          }
-        },
-        "required": [
-          "objective"
-        ]
-      }
-    },
-    {
-      "name": "cua",
-      "description": "Inspect macOS permissions, select an application and window, read AX state, capture screenshots or dispatch input. Use appHandle from getApp; verify actions by reading fresh state.",
-      "parameters": {
-        "$schema": "https://json-schema.org/draft/2020-12/schema",
-        "oneOf": [
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "getCapabilities"
-              },
-              "params": {
-                "type": "object",
-                "properties": {},
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "listApps"
-              },
-              "params": {
-                "type": "object",
-                "properties": {},
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "findApps"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "query": {
-                    "type": "string",
-                    "minLength": 1,
-                    "pattern": "\\S"
-                  }
-                },
-                "required": [
-                  "query"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "getApp"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "selector": {
-                    "type": "string",
-                    "minLength": 1
-                  }
-                },
-                "required": [
-                  "selector"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "activate"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  }
-                },
-                "required": [
-                  "appHandle"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "show"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "windowId": {
-                    "type": "integer",
-                    "exclusiveMinimum": 0,
-                    "maximum": 4294967295
-                  }
-                },
-                "required": [
-                  "appHandle"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "listWindows"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  }
-                },
-                "required": [
-                  "appHandle"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "getState"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "windowId": {
-                    "type": "integer",
-                    "exclusiveMinimum": 0,
-                    "maximum": 4294967295
-                  },
-                  "includeMenus": {
-                    "description": "Expand menu contents; omitted or false shows menu-bar entries only.",
-                    "type": "boolean"
-                  },
-                  "details": {
-                    "description": "Include identifiers, global-point bounds and complete action names.",
-                    "type": "boolean"
-                  }
-                },
-                "required": [
-                  "appHandle"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "hover"
-              },
-              "params": {
-                "anyOf": [
-                  {
-                    "type": "object",
-                    "properties": {
-                      "appHandle": {
-                        "type": "string",
-                        "minLength": 1
-                      },
-                      "snapshotId": {
-                        "type": "string",
-                        "minLength": 1
-                      },
-                      "elementIndex": {
-                        "type": "integer",
-                        "minimum": 0,
-                        "maximum": 9007199254740991
-                      }
-                    },
-                    "required": [
-                      "appHandle",
-                      "snapshotId",
-                      "elementIndex"
-                    ],
-                    "additionalProperties": false
-                  },
-                  {
-                    "type": "object",
-                    "properties": {
-                      "appHandle": {
-                        "type": "string",
-                        "minLength": 1
-                      },
-                      "windowId": {
-                        "type": "integer",
-                        "exclusiveMinimum": 0,
-                        "maximum": 4294967295
-                      },
-                      "snapshotId": {
-                        "type": "string",
-                        "minLength": 1
-                      },
-                      "x": {
-                        "type": "number",
-                        "minimum": 0
-                      },
-                      "y": {
-                        "type": "number",
-                        "minimum": 0
-                      }
-                    },
-                    "required": [
-                      "appHandle",
-                      "windowId",
-                      "x",
-                      "y"
-                    ],
-                    "additionalProperties": false
-                  }
-                ]
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "click"
-              },
-              "params": {
-                "anyOf": [
-                  {
-                    "type": "object",
-                    "properties": {
-                      "appHandle": {
-                        "type": "string",
-                        "minLength": 1
-                      },
-                      "snapshotId": {
-                        "type": "string",
-                        "minLength": 1
-                      },
-                      "elementIndex": {
-                        "type": "integer",
-                        "minimum": 0,
-                        "maximum": 9007199254740991
-                      },
-                      "mouseButton": {
-                        "type": "string",
-                        "enum": [
-                          "left",
-                          "right",
-                          "middle"
-                        ]
-                      },
-                      "modifiers": {
-                        "type": "array",
-                        "items": {
-                          "type": "string",
-                          "enum": [
-                            "command",
-                            "control",
-                            "option",
-                            "shift",
-                            "fn"
-                          ]
-                        }
-                      },
-                      "clickCount": {
-                        "anyOf": [
-                          {
-                            "type": "number",
-                            "const": 1
-                          },
-                          {
-                            "type": "number",
-                            "const": 2
-                          }
-                        ]
-                      }
-                    },
-                    "required": [
-                      "appHandle",
-                      "snapshotId",
-                      "elementIndex"
-                    ],
-                    "additionalProperties": false
-                  },
-                  {
-                    "type": "object",
-                    "properties": {
-                      "appHandle": {
-                        "type": "string",
-                        "minLength": 1
-                      },
-                      "windowId": {
-                        "type": "integer",
-                        "exclusiveMinimum": 0,
-                        "maximum": 4294967295
-                      },
-                      "snapshotId": {
-                        "type": "string",
-                        "minLength": 1
-                      },
-                      "x": {
-                        "type": "number",
-                        "minimum": 0
-                      },
-                      "y": {
-                        "type": "number",
-                        "minimum": 0
-                      },
-                      "mouseButton": {
-                        "type": "string",
-                        "enum": [
-                          "left",
-                          "right",
-                          "middle"
-                        ]
-                      },
-                      "modifiers": {
-                        "type": "array",
-                        "items": {
-                          "type": "string",
-                          "enum": [
-                            "command",
-                            "control",
-                            "option",
-                            "shift",
-                            "fn"
-                          ]
-                        }
-                      },
-                      "clickCount": {
-                        "anyOf": [
-                          {
-                            "type": "number",
-                            "const": 1
-                          },
-                          {
-                            "type": "number",
-                            "const": 2
-                          }
-                        ]
-                      }
-                    },
-                    "required": [
-                      "appHandle",
-                      "windowId",
-                      "x",
-                      "y"
-                    ],
-                    "additionalProperties": false
-                  }
-                ]
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "setValue"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "snapshotId": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "elementIndex": {
-                    "type": "integer",
-                    "minimum": 0,
-                    "maximum": 9007199254740991
-                  },
-                  "value": {
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "appHandle",
-                  "snapshotId",
-                  "elementIndex",
-                  "value"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "selectText"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "snapshotId": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "elementIndex": {
-                    "type": "integer",
-                    "minimum": 0,
-                    "maximum": 9007199254740991
-                  },
-                  "text": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "prefix": {
-                    "type": "string"
-                  },
-                  "suffix": {
-                    "type": "string"
-                  },
-                  "selectionType": {
-                    "type": "string",
-                    "enum": [
-                      "text",
-                      "cursor_before",
-                      "cursor_after"
-                    ]
-                  }
-                },
-                "required": [
-                  "appHandle",
-                  "snapshotId",
-                  "elementIndex",
-                  "text"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "performSecondaryAction"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "snapshotId": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "elementIndex": {
-                    "type": "integer",
-                    "minimum": 0,
-                    "maximum": 9007199254740991
-                  },
-                  "action": {
-                    "type": "string",
-                    "minLength": 1
-                  }
-                },
-                "required": [
-                  "appHandle",
-                  "snapshotId",
-                  "elementIndex",
-                  "action"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "typeText"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "text": {
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "appHandle",
-                  "text"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "paste"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "text": {
-                    "type": "string"
-                  },
-                  "format": {
-                    "type": "string",
-                    "enum": [
-                      "text",
-                      "html"
-                    ]
-                  }
-                },
-                "required": [
-                  "appHandle",
-                  "text"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "pressKey"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "key": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "modifiers": {
-                    "type": "array",
-                    "items": {
-                      "type": "string",
-                      "enum": [
-                        "command",
-                        "control",
-                        "option",
-                        "shift",
-                        "fn"
-                      ]
-                    }
-                  }
-                },
-                "required": [
-                  "appHandle",
-                  "key"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "scroll"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "windowId": {
-                    "type": "integer",
-                    "exclusiveMinimum": 0,
-                    "maximum": 4294967295
-                  },
-                  "snapshotId": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "x": {
-                    "type": "number",
-                    "minimum": 0
-                  },
-                  "y": {
-                    "type": "number",
-                    "minimum": 0
-                  },
-                  "deltaLinesX": {
-                    "type": "integer",
-                    "minimum": -10,
-                    "maximum": 10
-                  },
-                  "deltaLinesY": {
-                    "type": "integer",
-                    "minimum": -10,
-                    "maximum": 10
-                  }
-                },
-                "required": [
-                  "appHandle",
-                  "windowId",
-                  "x",
-                  "y",
-                  "deltaLinesX",
-                  "deltaLinesY"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "drag"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "windowId": {
-                    "type": "integer",
-                    "exclusiveMinimum": 0,
-                    "maximum": 4294967295
-                  },
-                  "mouseButton": {
-                    "type": "string",
-                    "enum": [
-                      "left",
-                      "right",
-                      "middle"
-                    ]
-                  },
-                  "modifiers": {
-                    "type": "array",
-                    "items": {
-                      "type": "string",
-                      "enum": [
-                        "command",
-                        "control",
-                        "option",
-                        "shift",
-                        "fn"
-                      ]
-                    }
-                  },
-                  "snapshotId": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "fromX": {
-                    "type": "number",
-                    "minimum": 0
-                  },
-                  "fromY": {
-                    "type": "number",
-                    "minimum": 0
-                  },
-                  "toX": {
-                    "type": "number",
-                    "minimum": 0
-                  },
-                  "toY": {
-                    "type": "number",
-                    "minimum": 0
-                  }
-                },
-                "required": [
-                  "appHandle",
-                  "windowId",
-                  "fromX",
-                  "fromY",
-                  "toX",
-                  "toY"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          },
-          {
-            "type": "object",
-            "properties": {
-              "method": {
-                "type": "string",
-                "const": "screenshot"
-              },
-              "params": {
-                "type": "object",
-                "properties": {
-                  "appHandle": {
-                    "type": "string",
-                    "minLength": 1
-                  },
-                  "windowId": {
-                    "type": "integer",
-                    "exclusiveMinimum": 0,
-                    "maximum": 4294967295
-                  }
-                },
-                "required": [
-                  "appHandle",
-                  "windowId"
-                ],
-                "additionalProperties": false
-              }
-            },
-            "required": [
-              "method",
-              "params"
-            ],
-            "additionalProperties": false
-          }
-        ],
-        "type": "object"
-      }
-    },
-    {
-      "name": "edit",
-      "description": "Edit an existing UTF-8 text file by replacing literal text.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "file_path": {
-            "type": "string",
-            "description": "Path to edit, resolved by the filesystem backend. Provide `file_path` before `old_string` and `new_string` in the arguments."
-          },
-          "old_string": {
-            "type": "string",
-            "description": "Literal text to replace."
-          },
-          "new_string": {
-            "type": "string",
-            "description": "Literal replacement text. Use an empty string to delete the match."
-          },
-          "replace_all": {
-            "type": "boolean",
-            "description": "Replace all matches. Defaults to false; when false, old_string must appear exactly once."
-          },
-          "sandbox_permissions": {
-            "type": "string",
-            "description": "The narrowest wider sandbox mode for a one-shot retry of the exact operation the sandbox just denied; the retry asks the user for approval.",
-            "enum": [
-              "workspace-write",
-              "danger-full-access"
-            ]
-          },
-          "justification": {
-            "type": "string",
-            "description": "Required with sandbox_permissions: one sentence for the user explaining why this exact file operation needs the wider access. Use the language of the user’s current request."
-          }
-        },
-        "required": [
-          "file_path",
-          "old_string",
-          "new_string"
-        ]
-      }
-    },
-    {
-      "name": "exit_plan_mode",
-      "description": "Use only in plan mode. Present your plan for the user's review and, on approval, leave plan mode. The user may approve (carry out the plan from your next step) or keep planning — their feedback comes back in the tool result; revise and present again.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "plan": {
-            "type": "string",
-            "description": "The complete plan, as markdown, starting with a # heading that names it."
-          }
-        },
-        "required": [
-          "plan"
-        ]
-      }
-    },
-    {
-      "name": "get_goal",
-      "description": "Read the current session goal, including the id and revision that update_goal requires.",
-      "parameters": {
-        "type": "object",
-        "properties": {}
-      }
-    },
-    {
-      "name": "glob",
-      "description": "Find files, not directories, whose paths match a glob pattern, including hidden and ignored files. Returns up to 100 paths in modification-time order; a larger result keeps the first paths and reports where the complete list was saved.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "pattern": {
-            "type": "string",
-            "description": "Glob pattern to match file paths against (e.g. \"**/*.ts\", \"src/**/*.test.js\"). A pattern with no \"/\" matches the basename at any depth, so \"*\" and \"*.ts\" both search the whole tree; include a separator to anchor the depth."
-          },
-          "path": {
-            "type": "string",
-            "description": "Directory to search in. Defaults to the session workspace; a relative path resolves against it."
-          }
-        },
-        "required": [
-          "pattern"
-        ]
-      }
-    },
-    {
-      "name": "grep",
-      "description": "Search file contents with a ripgrep regular expression. Returns matching lines with line numbers, grouped by file. Returns up to 250 matches; a larger result reports where the complete match list was saved.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "pattern": {
-            "type": "string",
-            "description": "Regular expression to search for (ripgrep syntax)."
-          },
-          "path": {
-            "type": "string",
-            "description": "File or directory to search. Defaults to the session workspace; a relative path resolves against it."
-          },
-          "include": {
-            "type": "string",
-            "description": "One glob filter for which files to search (e.g. \"*.ts\", \"*.{js,jsx}\"). Not a list; negation is not supported."
-          }
-        },
-        "required": [
-          "pattern"
-        ]
-      }
-    },
-    {
-      "name": "interrupt_agent",
-      "description": "Ask a subagent to stop its current work. This call returns without waiting for it to stop. You can continue a local direct child's conversation later with send_message. External executions stop permanently and cannot receive follow-ups. Subagents it started will keep running.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "agent_id": {
-            "type": "string",
-            "description": "The id of an agent created under you: your direct child or a deeper descendant."
-          }
-        },
-        "required": [
-          "agent_id"
-        ]
-      }
-    },
-    {
-      "name": "job_kill",
-      "description": "Request cancellation of a running background job.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "job_id": {
-            "type": "string",
-            "description": "Job id returned by the tool that started the background work."
-          },
-          "reason": {
-            "type": "string",
-            "description": "Optional short reason, recorded in the log and forwarded to the job."
-          }
-        },
-        "required": [
-          "job_id"
-        ]
-      }
-    },
-    {
-      "name": "job_list",
-      "description": "List your background jobs (running and finished) with their ids, kinds, and statuses.",
-      "parameters": {
-        "type": "object",
-        "properties": {}
-      }
-    },
-    {
-      "name": "job_output",
-      "description": "Read a background job: output since the previous read for stream jobs, or the result of a finished final-output job.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "job_id": {
-            "type": "string",
-            "description": "Job id returned by the tool that started the background work."
-          },
-          "wait": {
-            "type": "boolean",
-            "description": "Block until the job finishes or the timeout expires; a timed-out wait leaves the job running. Defaults to false."
-          },
-          "timeout_ms": {
-            "type": "number",
-            "description": "Max wait in milliseconds with wait: true. Defaults to and is capped by configuration."
-          }
-        },
-        "required": [
-          "job_id"
-        ]
-      }
-    },
-    {
-      "name": "list_agents",
-      "description": "List subagents you started, with their ids, labels, and status. running means it is working; inactive means it is not currently working. You will be notified when a subagent finishes; there is no need to keep checking its status. Use send_message to continue the conversation.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "scope": {
-            "type": "string",
-            "description": "children (default) lists direct children, which accept send_message in any status. descendants lists the whole tree below you with each entry's parent session id and depth; entries deeper than 1 accept only interrupt_agent.",
-            "enum": [
-              "children",
-              "descendants"
-            ]
-          }
-        }
-      }
-    },
-    {
-      "name": "read",
-      "description": "Read a UTF-8 text file and return line-numbered content.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "file_path": {
-            "type": "string",
-            "description": "Path to read, resolved by the filesystem backend."
-          },
-          "offset": {
-            "type": "number",
-            "description": "1-based first line to return. Defaults to 1."
-          },
-          "limit": {
-            "type": "number",
-            "description": "Maximum number of lines to return. Defaults to 2000."
-          }
-        },
-        "required": [
-          "file_path"
-        ]
-      }
-    },
-    {
-      "name": "read_image",
-      "description": "Read a PNG/JPEG/WebP/GIF file and return the image itself. Large images are downscaled automatically; do not install image libraries or create thumbnails to inspect an image.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "file_path": {
-            "type": "string",
-            "description": "Path to the image file, resolved by the filesystem backend."
-          }
-        },
-        "required": [
-          "file_path"
-        ]
-      }
-    },
-    {
-      "name": "send_message",
-      "description": "Send a message to an agent. A working agent receives it at its next step; an idle agent starts a new turn with it. Returns delivery confirmation, not the agent's answer.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "agent_id": {
-            "type": "string",
-            "description": "The agent id of your direct continuable child, or your direct parent when you are a resident continuable child."
-          },
-          "message": {
-            "type": "string",
-            "description": "The message to deliver to the agent."
-          }
-        },
-        "required": [
-          "agent_id",
-          "message"
-        ]
-      }
-    },
-    {
-      "name": "skill",
-      "description": "Load the full instructions for a skill. Call it before acting on a task that names or clearly matches a skill in the session skill catalog.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "name": {
-            "type": "string",
-            "description": "The exact skill name from the available skills list."
-          }
-        },
-        "required": [
-          "name"
-        ]
-      }
-    },
-    {
-      "name": "subagent",
-      "description": "Delegate a self-contained task to a subagent (a separate agent that works in its own context) to offload focused, independent work — research, a scoped implementation, an analysis — so it does not consume this conversation's context. The subagent returns its result, not its intermediate steps. This tool starts an independently managed subagent and immediately returns its id. The runtime notifies you when it finishes. The child reports results with `send_message`; use `send_message` to steer it while running or continue its conversation after it finishes.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "cwd": {
-            "type": "string",
-            "description": "Initial child working directory. Relative paths use your current directory; omitted inherits it. Later directory changes in either agent are independent."
-          },
-          "description": {
-            "type": "string",
-            "description": "A short (3-5 word) description of the delegated task, for display."
-          },
-          "prompt": {
-            "type": "string",
-            "description": "The complete, self-contained task for the subagent. It does not share this conversation's context, so include everything it needs."
-          }
-        },
-        "required": [
-          "description",
-          "prompt"
-        ]
-      }
-    },
-    {
-      "name": "subagent_fork",
-      "description": "Delegate a task to a subagent that inherits this conversation: a child agent seeded with all completed turns so far (it does not see the current in-flight turn). Use this when the subtask builds on this conversation's context — a follow-up analysis, a review, a continuation — without consuming this conversation's context for the work itself. You receive its result, not its intermediate steps. This tool starts an independently managed subagent and immediately returns its id. The runtime notifies you when it finishes. The child reports results with `send_message`; use `send_message` to steer it while running or continue its conversation after it finishes.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "cwd": {
-            "type": "string",
-            "description": "Initial child working directory. Relative paths use your current directory; omitted inherits it. Later directory changes in either agent are independent."
-          },
-          "description": {
-            "type": "string",
-            "description": "A short (3-5 word) description of the delegated task, for display."
-          },
-          "prompt": {
-            "type": "string",
-            "description": "The task for the subagent. It already sees this conversation's completed turns, so build on them freely and state only what is new."
-          }
-        },
-        "required": [
-          "description",
-          "prompt"
-        ]
-      }
-    },
-    {
-      "name": "todo_write",
-      "description": "Record and update a task list to plan multi-step work and show progress; skip it for trivial single-step tasks. Add one todo per concrete step before you start. While work remains, keep the todos being worked on `in_progress`, several only when work runs in parallel. Mark each todo `completed` as soon as it is done.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "todos": {
-            "type": "array",
-            "description": "The COMPLETE task list, replacing any previous list.",
-            "items": {
-              "type": "object",
-              "additionalProperties": false,
-              "properties": {
-                "content": {
-                  "type": "string",
-                  "description": "What the task is — a short imperative line."
-                },
-                "status": {
-                  "type": "string",
-                  "description": "pending (not started) | in_progress (now) | completed (done).",
-                  "enum": [
-                    "pending",
-                    "in_progress",
-                    "completed"
-                  ]
-                }
-              },
-              "required": [
-                "content",
-                "status"
-              ]
-            }
-          }
-        },
-        "required": [
-          "todos"
-        ]
-      }
-    },
-    {
-      "name": "update_goal",
-      "description": "Update the current goal.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "goal_id": {
-            "type": "string",
-            "description": "Exact id returned by get_goal."
-          },
-          "revision": {
-            "type": "number",
-            "description": "Exact positive revision returned by get_goal."
-          },
-          "action": {
-            "type": "string",
-            "description": "edit, pause, and resume require a direct top-level human request. complete and blocked are also allowed during an automatic continuation of this goal; blocked is rejected before the configured minimum round count.",
-            "enum": [
-              "edit",
-              "pause",
-              "resume",
-              "complete",
-              "blocked"
-            ]
-          },
-          "objective": {
-            "type": "string",
-            "description": "Replacement objective; valid only with action edit."
-          },
-          "max_goal_rounds": {
-            "type": "number",
-            "description": "Replacement cap; valid only with action edit."
-          },
-          "blocked_reason": {
-            "type": "string",
-            "description": "Required only with action blocked: the concrete condition that persisted across rounds and blocks progress."
-          }
-        },
-        "required": [
-          "goal_id",
-          "revision",
-          "action"
-        ]
-      }
-    },
-    {
-      "name": "web_fetch",
-      "description": "Fetch the content of a specific HTTP(S) URL and return it decoded to text.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "url": {
-            "type": "string",
-            "description": "The HTTP(S) URL to fetch."
-          }
-        },
-        "required": [
-          "url"
-        ]
-      }
-    },
-    {
-      "name": "web_search",
-      "description": "Search the web for current information. Returns an optional summary answer and a list of source URLs.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "queries": {
-            "type": "array",
-            "description": "1–4 search queries; their results are merged.",
-            "items": {
-              "type": "string"
-            }
-          }
-        },
-        "required": [
-          "queries"
-        ]
-      }
-    },
-    {
-      "name": "workflow",
-      "description": "Run a JavaScript workflow script that orchestrates subagents at scale. Use this for work that fans out across many independent pieces — an audit over many files, a migration, multi-angle research, adversarial verification of findings — where you write the orchestration as a script instead of delegating turn by turn.\n\nScript-body hooks:\n- `agent(prompt, opts?): Promise<any>` — run one subagent to completion. Without `opts.schema` it resolves to the child's final text; with `opts.schema` (an object-rooted JSON Schema using ONLY type/properties/required/additionalProperties/items/enum/const/oneOf) it resolves to the validated object. Resolves `null` when the child fails (filter with `.filter(Boolean)`). Other opts: `label` (display), `phase` (progress group), and independent `provider`/`model` LLM target overrides.\n- `pipeline(items, ...stages): Promise<any[]>` — run each item through the stages independently with NO barrier between stages (prefer this for multi-stage work). Each stage receives `(prev, item, index)`. A stage throw drops that ITEM to `null` and skips its remaining stages.\n- `parallel(thunks): Promise<any[]>` — run zero-argument functions concurrently and await ALL of them (a barrier; use only when a stage genuinely needs every prior result together). A throwing thunk resolves to `null`.\n- `phase(title)` — start a progress phase; `log(message)` — narrate progress; `args` — the tool call's `args` input, verbatim.\n\nMisused hooks (bad arguments, unknown options, unsupported schemas, tripped caps) end the whole script instead of producing `null`. The script has no filesystem, network, timer, or Node.js APIs; the agents do the work.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "script": {
-            "type": "string",
-            "description": "The plain JavaScript body, not TypeScript and without an `export const meta` statement; top-level await is allowed. End with `return <value>`; the JSON-serializable value is this tool's result."
-          },
-          "meta": {
-            "type": "object",
-            "description": "The workflow identity as plain JSON, not code.",
-            "additionalProperties": true,
-            "properties": {
-              "name": {
-                "type": "string",
-                "description": "Short kebab-case workflow name."
-              },
-              "description": {
-                "type": "string",
-                "description": "One-line description of what the workflow does."
-              },
-              "whenToUse": {
-                "type": "string",
-                "description": "Optional guidance on when this workflow applies."
-              },
-              "phases": {
-                "type": "array",
-                "description": "Optional phase declarations matched by phase() calls.",
-                "items": {
-                  "type": "object",
-                  "additionalProperties": true,
-                  "properties": {
-                    "title": {
-                      "type": "string",
-                      "description": "The phase title phase() calls match by exact string."
-                    },
-                    "detail": {
-                      "type": "string",
-                      "description": "Optional one-line description of the phase."
-                    },
-                    "provider": {
-                      "type": "string",
-                      "description": "Optional provider override this phase is expected to use."
-                    },
-                    "model": {
-                      "type": "string",
-                      "description": "Optional model override this phase is expected to use."
-                    }
-                  },
-                  "required": [
-                    "title"
-                  ]
-                }
-              }
-            },
-            "required": [
-              "name",
-              "description"
-            ]
-          },
-          "args": {
-            "type": "object",
-            "description": "Optional JSON input exposed to the script as the `args` global (wrap a bare list as a field, e.g. {\"files\": [...]}).",
-            "additionalProperties": true
-          },
-          "run_in_background": {
-            "type": "boolean",
-            "description": "Run as a background job: return a job id immediately instead of waiting; the return value arrives with the completion notice."
-          }
-        },
-        "required": [
-          "script",
-          "meta"
-        ]
-      }
-    },
-    {
-      "name": "working_directory",
-      "description": "Read the current working directory, or change it with cd. Relative paths use the current directory. Existing shells and running processes keep their own directories.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "cd": {
-            "type": "string",
-            "description": "Existing directory to enter. Omit to read the current directory."
-          }
-        }
-      }
-    },
-    {
-      "name": "write",
-      "description": "Create or fully replace a UTF-8 text file.",
-      "parameters": {
-        "type": "object",
-        "properties": {
-          "file_path": {
-            "type": "string",
-            "description": "Path to write, resolved by the filesystem backend. Provide `file_path` before `content` in the arguments."
-          },
-          "content": {
-            "type": "string",
-            "description": "Full UTF-8 text content to write."
-          },
-          "sandbox_permissions": {
-            "type": "string",
-            "description": "The narrowest wider sandbox mode for a one-shot retry of the exact operation the sandbox just denied; the retry asks the user for approval.",
-            "enum": [
-              "workspace-write",
-              "danger-full-access"
-            ]
-          },
-          "justification": {
-            "type": "string",
-            "description": "Required with sandbox_permissions: one sentence for the user explaining why this exact file operation needs the wider access. Use the language of the user’s current request."
-          }
-        },
-        "required": [
-          "file_path",
-          "content"
+          "code"
         ]
       }
     }