{
 "source": {
  "path": "src/examples/sandboxes/fix-a-test.mts",
  "sha256": "c045ac2a64edb7f5d6ab2a2e64296dd8c0a898d13cde8559a50ea6d01053340d"
 },
 "run": {
  "id": "sandbox-us1-47ccb126241f",
  "recordedAt": "2026-10-31T03:09:27.535Z",
  "exitCode": 0,
  "costUsd": 0.1162,
  "sdk": {
   "@tangle-network/sandbox": "1.0.134",
   "@tangle-network/agent-eval": "1.0.9"
  }
 },
 "events": [
  {
   "atMs": 210,
   "kind": "call",
   "id": 1,
   "line": 9,
   "name": "create",
   "label": "client.create",
   "assign": "box",
   "durationMs": 4270,
   "result": {
    "id": "sandbox-us1-47ccb126241f",
    "status": "running",
    "name": "sandbox-us1-47ccb126241f"
   }
  },
  {
   "atMs": 4481,
   "kind": "call",
   "id": 2,
   "line": 14,
   "name": "prompt",
   "label": "box.prompt",
   "assign": "run",
   "durationMs": 60397,
   "result": {
    "success": true,
    "status": "success",
    "response": "All 9 tests pass. Here's what was wrong — three independent source bugs, one per failing test:\n\n**1. `packages/cli/src/flags.js` — numeric flags stayed strings**\n`parseFlags` assigned the raw `argv` string, so `--port 8080` gave `\"8080\"` instead of `8080`. There was even a `// TODO: numbers stay strings` acknowledging it. Now numeric-looking values are coerced with `Number()` (matched against a regex so ids like `\"1a2b\"` or negative/decimal numbers behave sensibly).\n\n**2. `packages/shared/src/dates.js` — used local-time getters for UTC day keys**\nThe comment says \"groups events by calendar day in UTC\", but the code used `getFullYear`/`getMonth`/`getDate`. The test sets `TZ=America/New_York` and passes `2026-01-02T02:30:00Z`, which is still Jan 1 in local NY time — hence `'2026-01-01' !== '2026-01-02'`. Switched to the `getUTC*` variants.\n\n**3. `packages/shared/src/format.js` — no null guard in `displayName`**\n`user.name.trim()` threw `Cannot read properties of null` for `displayName(null)`. Now uses optional chaining and falls back to `\"anonymous\"` for `null`, `{}`, or an empty/whitespace name.\n\nI checked the other consumers first (`src/index.js` uses `flags.port ?? 3000`, which works fine with a number) to make sure the coercion change wouldn't break the entry point. The remaining 6 tests were already passing and stayed green.",
    "toolInvocations": [
     {
      "toolName": "Bash",
      "input": {
       "command": "ls -la /home/agent/sandbox-demo && cat /home/agent/sandbox-demo/package.json",
       "description": "List project files and show package.json"
      },
      "result": "total 16\ndrwxr-xr-x 15 agent agent 4096 Oct 31 03:09 .\ndrwxr-xr-x 11 agent agent  162 Oct 31 03:09 ..\ndrwxr-xr-x  6 agent agent   53 Oct 31 03:09 .cache\ndrwxr-xr-x  2 agent agent   25 Oct 31 03:09 .cargo\ndrwxr-xr-x  4 root  root    38 Oct 31 03:09 .claude-code\ndrwxr-xr-x  2 agent agent    6 Oct 31 03:09 .config\ndrwxr-xr-x  8 agent agent  178 Oct 31 03:09 .git\n-rw-r--r--  1 agent agent   13 Oct 31 03:09 .gitignore\ndrwxr-xr-x  6 agent agent   54 Oct 31 03:09 .local\ndrwxr-xr-x  3 agent root    19 Oct 31 03:09 .pki\ndrwxr-xr-x  2 agent agent    6 Oct 31 03:09 .pnpm-store\ndrwx--x--x  3 root  root    19 Oct 31 03:09 .sidecar\n-rw-r--r--  1 agent agent  192 Oct 31 03:09 README.md\ndrwxr-xr-x  2 agent agent   22 Oct 31 03:09 bench\n-rw-r--r--  1 agent agent  249 Oct 31 03:09 package.json\ndrwxr-xr-x  7 agent agent   67 Oct 31 03:09 packages\ndrwxr-xr-x  2 agent agent   22 Oct 31 03:09 src\ndrwxr-xr-x  2 agent agent  114 Oct 31 03:09 test\n{\n  \"name\": \"sandbox-demo\",\n  \"private\": true,\n  \"type\": \"module\",\n  \"scripts\": {\n    \"start\": \"node src/index.js\",\n    \"test\": \"node --test\",\n    \"bench\": \"node bench/parse.js\"\n  },\n  \"dependencies\": {\n    \"kleur\": \"3.0.3\",\n    \"ms\": \"2.0.0\"\n  }\n}"
     },
     {
      "toolName": "Bash",
      "input": {
       "command": "npm test 2>&1 | head -60",
       "description": "Run npm test to see failure"
      },
      "result": "> test\n> node --test\n\nTAP version 13\n# Subtest: [cli-flag] --port takes a number\nnot ok 1 - [cli-flag] --port takes a number\n  ---\n  duration_ms: 1.64496\n  type: 'test'\n  location: '/home/agent/sandbox-demo/test/cli.test.js:5:1'\n  failureType: 'testCodeFailure'\n  error: |-\n    Expected values to be strictly equal:\n    \n    '8080' !== 8080\n    \n  code: 'ERR_ASSERTION'\n  name: 'AssertionError'\n  expected: 8080\n  actual: '8080'\n  operator: 'strictEqual'\n  stack: |-\n    TestContext.<anonymous> (file:///home/agent/sandbox-demo/test/cli.test.js:6:10)\n    Test.runInAsyncScope (node:async_hooks:214:14)\n    Test.run (node:internal/test_runner/test:1047:25)\n    Test.start (node:internal/test_runner/test:944:17)\n    startSubtestAfterBootstrap (node:internal/test_runner/harness:296:17)\n  ...\n# Subtest: a bare flag is true\nok 2 - a bare flag is true\n  ---\n  duration_ms: 0.20662\n  type: 'test'\n  ...\n# Subtest: [timezone] day keys are UTC days\nnot ok 3 - [timezone] day keys are UTC days\n  ---\n  duration_ms: 1.52693\n  type: 'test'\n  location: '/home/agent/sandbox-demo/test/dates.test.js:7:1'\n  failureType: 'testCodeFailure'\n  error: |-\n    Expected values to be strictly equal:\n    + actual - expected\n    \n    + '2026-01-01'\n    - '2026-01-02'\n                ^\n    \n  code: 'ERR_ASSERTION'\n  name: 'AssertionError'\n  expected: '2026-01-02'\n  actual: '2026-01-01'\n  operator: 'strictEqual'\n  stack: |-\n    TestContext.<anonymous> (file:///home/agent/sandbox-demo/test/dates.test.js:8:10)\n    Test.runInAsyncScope (node:async_hooks:214:14)\n    Test.run (node:internal/test_runner/test:1047:25)\n    Test.start (node:internal/test_runner/test:944:17)"
     },
     {
      "toolName": "Bash",
      "input": {
       "command": "npm test 2>&1 | tail -80",
       "description": "Show remaining test output"
      },
      "result": "  type: 'test'\n  location: '/home/agent/sandbox-demo/test/dates.test.js:7:1'\n  failureType: 'testCodeFailure'\n  error: |-\n    Expected values to be strictly equal:\n    + actual - expected\n    \n    + '2026-01-01'\n    - '2026-01-02'\n                ^\n    \n  code: 'ERR_ASSERTION'\n  name: 'AssertionError'\n  expected: '2026-01-02'\n  actual: '2026-01-01'\n  operator: 'strictEqual'\n  stack: |-\n    TestContext.<anonymous> (file:///home/agent/sandbox-demo/test/dates.test.js:8:10)\n    Test.runInAsyncScope (node:async_hooks:214:14)\n    Test.run (node:internal/test_runner/test:1047:25)\n    Test.start (node:internal/test_runner/test:944:17)\n    startSubtestAfterBootstrap (node:internal/test_runner/harness:296:17)\n  ...\n# Subtest: [null-guard] a user without a name is anonymous\nnot ok 4 - [null-guard] a user without a name is anonymous\n  ---\n  duration_ms: 0.937519\n  type: 'test'\n  location: '/home/agent/sandbox-demo/test/format.test.js:5:1'\n  failureType: 'testCodeFailure'\n  error: \"Cannot read properties of null (reading 'name')\"\n  code: 'ERR_TEST_FAILURE'\n  name: 'TypeError'\n  stack: |-\n    displayName (file:///home/agent/sandbox-demo/packages/shared/src/format.js:2:15)\n    TestContext.<anonymous> (file:///home/agent/sandbox-demo/test/format.test.js:6:16)\n    Test.runInAsyncScope (node:async_hooks:214:14)\n    Test.run (node:internal/test_runner/test:1047:25)\n    Test.start (node:internal/test_runner/test:944:17)\n    startSubtestAfterBootstrap (node:internal/test_runner/harness:296:17)\n  ...\n# Subtest: display names are trimmed\nok 5 - display names are trimmed\n  ---\n  duration_ms: 0.25133\n  type: 'test'\n  ...\n# Subtest: initials\nok 6 - initials\n  ---\n  duration_ms: 0.18944\n  type: 'test'\n  ...\n# Subtest: [primes] there are 9592 primes below 100000\nok 7 - [primes] there are 9592 primes below 100000\n  ---\n  duration_ms: 876.43942\n  type: 'test'\n  ...\n# Subtest: a body with every field passes\nok 8 - a body with every field passes\n  ---\n  duration_ms: 1.55288\n  type: 'test'\n  ...\n# Subtest: a missing field fails\nok 9 - a missing field fails\n  ---\n  duration_ms: 0.27354\n  type: 'test'\n  ...\n1..9\n# tests 9\n# suites 0\n# pass 6\n# fail 3\n# cancelled 0\n# skipped 0\n# todo 0\n# duration_ms 1224.988891"
     },
     {
      "toolName": "Bash",
      "input": {
       "command": "ls -la /home/agent/sandbox-demo/src /home/agent/sandbox-demo/test /home/agent/sandbox-demo/packages",
       "description": "List source, test, and packages dirs"
      },
      "result": "/home/agent/sandbox-demo/packages:\ntotal 4\ndrwxr-xr-x  7 agent agent   67 Oct 31 03:09 .\ndrwxr-xr-x 15 agent agent 4096 Oct 31 03:09 ..\ndrwxr-xr-x  3 agent agent   17 Oct 31 03:09 api\ndrwxr-xr-x  3 agent agent   17 Oct 31 03:09 cli\ndrwxr-xr-x  3 agent agent   17 Oct 31 03:09 shared\ndrwxr-xr-x  3 agent agent   17 Oct 31 03:09 web\ndrwxr-xr-x  3 agent agent   17 Oct 31 03:09 worker\n\n/home/agent/sandbox-demo/src:\ntotal 8\ndrwxr-xr-x  2 agent agent   22 Oct 31 03:09 .\ndrwxr-xr-x 15 agent agent 4096 Oct 31 03:09 ..\n-rw-r--r--  1 agent agent  391 Oct 31 03:09 index.js\n\n/home/agent/sandbox-demo/test:\ntotal 24\ndrwxr-xr-x  2 agent agent  114 Oct 31 03:09 .\ndrwxr-xr-x 15 agent agent 4096 Oct 31 03:09 ..\n-rw-r--r--  1 agent agent  345 Oct 31 03:09 cli.test.js\n-rw-r--r--  1 agent agent  297 Oct 31 03:09 dates.test.js\n-rw-r--r--  1 agent agent  511 Oct 31 03:09 format.test.js\n-rw-r--r--  1 agent agent  375 Oct 31 03:09 primes.test.js\n-rw-r--r--  1 agent agent  394 Oct 31 03:09 validate.test.js"
     },
     {
      "toolName": "Bash",
      "input": {
       "command": "cat /home/agent/sandbox-demo/test/cli.test.js /home/agent/sandbox-demo/test/dates.test.js /home/agent/sandbox-demo/test/format.test.js",
       "description": "Show the three failing test files"
      },
      "result": "import { test } from \"node:test\";\nimport assert from \"node:assert/strict\";\nimport { parseFlags } from \"../packages/cli/src/flags.js\";\n\ntest(\"[cli-flag] --port takes a number\", () => {\n  assert.equal(parseFlags([\"--port\", \"8080\"]).port, 8080);\n});\n\ntest(\"a bare flag is true\", () => {\n  assert.equal(parseFlags([\"--verbose\"]).verbose, true);\n});\nimport { test } from \"node:test\";\nimport assert from \"node:assert/strict\";\nimport { dayKey } from \"../packages/shared/src/dates.js\";\n\nprocess.env.TZ = \"America/New_York\";\n\ntest(\"[timezone] day keys are UTC days\", () => {\n  assert.equal(dayKey(new Date(\"2026-01-02T02:30:00Z\")), \"2026-01-02\");\n});\nimport { test } from \"node:test\";\nimport assert from \"node:assert/strict\";\nimport { displayName, initials } from \"../packages/shared/src/format.js\";\n\ntest(\"[null-guard] a user without a name is anonymous\", () => {\n  assert.equal(displayName(null), \"anonymous\");\n  assert.equal(displayName({}), \"anonymous\");\n});\n\ntest(\"display names are trimmed\", () => {\n  assert.equal(displayName({ name: \"  Ada Lovelace \" }), \"Ada Lovelace\");\n});\n\ntest(\"initials\", () => {\n  assert.equal(initials(\"Ada Lovelace\"), \"AL\");\n});"
     },
     {
      "toolName": "Bash",
      "input": {
       "command": "find /home/agent/sandbox-demo/packages -type f | sort",
       "description": "List all files in packages"
      },
      "result": "/home/agent/sandbox-demo/packages/api/src/server.js\n/home/agent/sandbox-demo/packages/api/src/validate.js\n/home/agent/sandbox-demo/packages/cli/src/flags.js\n/home/agent/sandbox-demo/packages/cli/src/main.js\n/home/agent/sandbox-demo/packages/shared/src/config.js\n/home/agent/sandbox-demo/packages/shared/src/dates.js\n/home/agent/sandbox-demo/packages/shared/src/format.js\n/home/agent/sandbox-demo/packages/web/src/client.js\n/home/agent/sandbox-demo/packages/worker/src/queue.js"
     },
     {
      "toolName": "Read",
      "input": {
       "file_path": "/home/agent/sandbox-demo/packages/cli/src/flags.js"
      },
      "result": "1\t// Parses --name value and --flag pairs.\n2\texport function parseFlags(argv) {\n3\t  const flags = {};\n4\t  for (let i = 0; i < argv.length; i++) {\n5\t    const arg = argv[i];\n6\t    if (!arg.startsWith(\"--\")) continue;\n7\t    const name = arg.slice(2);\n8\t    const next = argv[i + 1];\n9\t    if (next === undefined || next.startsWith(\"--\")) {\n10\t      flags[name] = true;\n11\t    } else {\n12\t      flags[name] = next; // TODO: numbers stay strings\n13\t      i++;\n14\t    }\n15\t  }\n16\t  return flags;\n17\t}\n18\t"
     },
     {
      "toolName": "Read",
      "input": {
       "file_path": "/home/agent/sandbox-demo/packages/shared/src/dates.js"
      },
      "result": "1\t// A day key groups events by calendar day in UTC.\n2\texport function dayKey(date) {\n3\t  const y = date.getFullYear();\n4\t  const m = String(date.getMonth() + 1).padStart(2, \"0\");\n5\t  const d = String(date.getDate()).padStart(2, \"0\");\n6\t  return `${y}-${m}-${d}`;\n7\t}\n8\t"
     },
     {
      "toolName": "Read",
      "input": {
       "file_path": "/home/agent/sandbox-demo/packages/shared/src/format.js"
      },
      "result": "1\texport function displayName(user) {\n2\t  return user.name.trim();\n3\t}\n4\t\n5\texport function initials(name) {\n6\t  return name.split(/\\s+/).map((part) => part[0].toUpperCase()).join(\"\");\n7\t}\n8\t"
     },
     {
      "toolName": "Bash",
      "input": {
       "command": "grep -rn \"parseFlags\\|dayKey\\|displayName\\|initials\" /home/agent/sandbox-demo --include=\"*.js\" -l | grep -v node_modules; echo \"---\"; grep -rn \"parseFlags\\|dayKey\\|displayName\\|initials\" /home/agent/sandbox-demo/src /home/agent/sandbox-demo/bench /home/agent/sandbox-demo/packages/web /home/agent/sandbox-demo/packages/api /home/agent/sandbox-demo/packages/worker /home/agent/sandbox-demo/packages/cli/src/main.js 2>/dev/null",
       "description": "Find all usages of the three functions"
      },
      "result": "/home/agent/sandbox-demo/packages/cli/src/flags.js\n/home/agent/sandbox-demo/packages/shared/src/dates.js\n/home/agent/sandbox-demo/packages/shared/src/format.js\n/home/agent/sandbox-demo/src/index.js\n/home/agent/sandbox-demo/test/cli.test.js\n/home/agent/sandbox-demo/test/dates.test.js\nugrep: warning: cannot open directory /home/agent/sandbox-demo/.sidecar: Permission denied\n/home/agent/sandbox-demo/test/format.test.js\n---\n/home/agent/sandbox-demo/src/index.js:4:import { parseFlags } from \"../packages/cli/src/flags.js\";\n/home/agent/sandbox-demo/src/index.js:6:const flags = parseFlags(process.argv.slice(2));"
     },
     {
      "toolName": "Read",
      "input": {
       "file_path": "/home/agent/sandbox-demo/src/index.js"
      },
      "result": "1\timport { createServer } from \"../packages/api/src/server.js\";\n2\timport { startQueue } from \"../packages/worker/src/queue.js\";\n3\timport { banner } from \"../packages/cli/src/main.js\";\n4\timport { parseFlags } from \"../packages/cli/src/flags.js\";\n5\t\n6\tconst flags = parseFlags(process.argv.slice(2));\n7\tstartQueue();\n8\tcreateServer().listen(flags.port ?? 3000, () => console.log(banner(flags.port ?? 3000)));\n9\t"
     },
     {
      "toolName": "Edit",
      "input": {
       "replace_all": false,
       "file_path": "/home/agent/sandbox-demo/packages/cli/src/flags.js",
       "old_string": "      flags[name] = next; // TODO: numbers stay strings",
       "new_string": "      flags[name] = /^[+-]?(\\d+(\\.\\d+)?|\\.\\d+)$/.test(next) ? Number(next) : next;"
      },
      "result": "The file /home/agent/sandbox-demo/packages/cli/src/flags.js has been updated successfully. (file state is current in your context — no need to Read it back)"
     },
     {
      "toolName": "Edit",
      "input": {
       "replace_all": false,
       "file_path": "/home/agent/sandbox-demo/packages/shared/src/dates.js",
       "old_string": "  const y = date.getFullYear();\n  const m = String(date.getMonth() + 1).padStart(2, \"0\");\n  const d = String(date.getDate()).padStart(2, \"0\");",
       "new_string": "  const y = date.getUTCFullYear();\n  const m = String(date.getUTCMonth() + 1).padStart(2, \"0\");\n  const d = String(date.getUTCDate()).padStart(2, \"0\");"
      },
      "result": "The file /home/agent/sandbox-demo/packages/shared/src/dates.js has been updated successfully. (file state is current in your context — no need to Read it back)"
     },
     {
      "toolName": "Edit",
      "input": {
       "replace_all": false,
       "file_path": "/home/agent/sandbox-demo/packages/shared/src/format.js",
       "old_string": "export function displayName(user) {\n  return user.name.trim();\n}",
       "new_string": "export function displayName(user) {\n  const name = user?.name?.trim();\n  return name || \"anonymous\";\n}"
      },
      "result": "The file /home/agent/sandbox-demo/packages/shared/src/format.js has been updated successfully. (file state is current in your context — no need to Read it back)"
     },
     {
      "toolName": "Bash",
      "input": {
       "command": "npm test 2>&1 | tail -15",
       "description": "Re-run tests after fixes"
      },
      "result": "# Subtest: a missing field fails\nok 9 - a missing field fails\n  ---\n  duration_ms: 0.25654\n  type: 'test'\n  ...\n1..9\n# tests 9\n# suites 0\n# pass 9\n# fail 0\n# cancelled 0\n# skipped 0\n# todo 0\n# duration_ms 1243.753698"
     }
    ],
    "traceId": "ptid_2c4a86b1-b7e2-4266-9936-aded35c5feeb",
    "durationMs": 60396,
    "usage": {
     "inputTokens": 123759,
     "outputTokens": 3277,
     "cacheReadTokens": 116928,
     "cacheWriteTokens": 0
    },
    "costUsd": 0.1162496
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     "state": {
      "status": "running",
      "input": {
       "command": "ls -la /home/agent/sandbox-demo && cat /home/agent/sandbox-demo/package.json",
       "description": "List project files and show package.json"
      }
     }
    }
   }
  },
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   "atMs": 9293,
   "kind": "stream",
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     "state": {
      "status": "running",
      "input": {
       "command": "npm test 2>&1 | head -60",
       "description": "Run npm test to see failure"
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   "kind": "stream",
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     "state": {
      "status": "completed",
      "input": {
       "command": "ls -la /home/agent/sandbox-demo && cat /home/agent/sandbox-demo/package.json",
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     "state": {
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       "command": "npm test 2>&1 | head -60",
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     "state": {
      "status": "running",
      "input": {
       "command": "npm test 2>&1 | tail -80",
       "description": "Show remaining test output"
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      "input": {
       "command": "ls -la /home/agent/sandbox-demo/src /home/agent/sandbox-demo/test /home/agent/sandbox-demo/packages",
       "description": "List source, test, and packages dirs"
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     }
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     "state": {
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       "command": "npm test 2>&1 | tail -80",
       "description": "Show remaining test output"
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      "input": {
       "command": "ls -la /home/agent/sandbox-demo/src /home/agent/sandbox-demo/test /home/agent/sandbox-demo/packages",
       "description": "List source, test, and packages dirs"
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     }
    }
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      "status": "running",
      "input": {
       "replace_all": false,
       "file_path": "/home/agent/sandbox-demo/packages/cli/src/flags.js",
       "old_string": "      flags[name] = next; // TODO: numbers stay strings",
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      }
     }
    }
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  {
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       "new_string": "  const y = date.getUTCFullYear();\n  const m = String(date.getUTCMonth() + 1).padStart(2, \"0\");\n  const d = String(date.getUTCDate()).padStart(2, \"0\");"
      }
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       "replace_all": false,
       "file_path": "/home/agent/sandbox-demo/packages/cli/src/flags.js",
       "old_string": "      flags[name] = next; // TODO: numbers stay strings",
       "new_string": "      flags[name] = /^[+-]?(\\d+(\\.\\d+)?|\\.\\d+)$/.test(next) ? Number(next) : next;"
      }
     }
    }
   }
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      "status": "completed",
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       "replace_all": false,
       "file_path": "/home/agent/sandbox-demo/packages/shared/src/dates.js",
       "old_string": "  const y = date.getFullYear();\n  const m = String(date.getMonth() + 1).padStart(2, \"0\");\n  const d = String(date.getDate()).padStart(2, \"0\");",
       "new_string": "  const y = date.getUTCFullYear();\n  const m = String(date.getUTCMonth() + 1).padStart(2, \"0\");\n  const d = String(date.getUTCDate()).padStart(2, \"0\");"
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     "type": "tool",
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   "result": {
    "exitCode": 0,
    "stdout": "\n> test\n> node --test\n\nTAP version 13\n# Subtest: [cli-flag] --port takes a number\nok 1 - [cli-flag] --port takes a number\n  ---\n  duration_ms: 1.02551\n  type: 'test'\n  ...\n# Subtest: a bare flag is true\nok 2 - a bare flag is true\n  ---\n  duration_ms: 0.162569\n  type: 'test'\n  ...\n# Subtest: [timezone] day keys are UTC days\nok 3 - [timezone] day keys are UTC days\n  ---\n  duration_ms: 0.83644\n  type: 'test'\n  ...\n# Subtest: [null-guard] a user without a name is anonymous\nok 4 - [null-guard] a user without a name is anonymous\n  ---\n  duration_ms: 0.98881\n  type: 'test'\n  ...\n# Subtest: display names are trimmed\nok 5 - display names are trimmed\n  ---\n  duration_ms: 0.156871\n  type: 'test'\n  ...\n# Subtest: initials\nok 6 - initials\n  ---\n  duration_ms: 0.185289\n  type: 'test'\n  ...\n# Subtest: [primes] there are 9592 primes below 100000\nok 7 - [primes] there are 9592 primes below 100000\n  ---\n  duration_ms: 856.992452\n  type: 'test'\n  ...\n# Subtest: a body with every field passes\nok 8 - a body with every field passes\n  ---\n  duration_ms: 1.4585\n  type: 'test'\n  ...\n# Subtest: a missing field fails\nok 9 - a missing field fails\n  ---\n  duration_ms: 0.28559\n  type: 'test'\n  ...\n1..9\n# tests 9\n# suites 0\n# pass 9\n# fail 0\n# cancelled 0\n# skipped 0\n# todo 0\n# duration_ms 1183.589868\n",
    "stderr": ""
   }
  },
  {
   "atMs": 67849,
   "kind": "call",
   "id": 4,
   "line": 21,
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   "label": "box.exec",
   "durationMs": 151,
   "result": {
    "exitCode": 0,
    "stdout": "diff --git a/packages/cli/src/flags.js b/packages/cli/src/flags.js\nindex 377b20f..575eb28 100644\n--- a/packages/cli/src/flags.js\n+++ b/packages/cli/src/flags.js\n@@ -9,7 +9,7 @@ export function parseFlags(argv) {\n     if (next === undefined || next.startsWith(\"--\")) {\n       flags[name] = true;\n     } else {\n-      flags[name] = next; // TODO: numbers stay strings\n+      flags[name] = /^[+-]?(\\d+(\\.\\d+)?|\\.\\d+)$/.test(next) ? Number(next) : next;\n       i++;\n     }\n   }\ndiff --git a/packages/shared/src/dates.js b/packages/shared/src/dates.js\nindex 4f8f7fd..87b9173 100644\n--- a/packages/shared/src/dates.js\n+++ b/packages/shared/src/dates.js\n@@ -1,7 +1,7 @@\n // A day key groups events by calendar day in UTC.\n export function dayKey(date) {\n-  const y = date.getFullYear();\n-  const m = String(date.getMonth() + 1).padStart(2, \"0\");\n-  const d = String(date.getDate()).padStart(2, \"0\");\n+  const y = date.getUTCFullYear();\n+  const m = String(date.getUTCMonth() + 1).padStart(2, \"0\");\n+  const d = String(date.getUTCDate()).padStart(2, \"0\");\n   return `${y}-${m}-${d}`;\n }\ndiff --git a/packages/shared/src/format.js b/packages/shared/src/format.js\nindex 8f4baf0..c4baf71 100644\n--- a/packages/shared/src/format.js\n+++ b/packages/shared/src/format.js\n@@ -1,5 +1,6 @@\n export function displayName(user) {\n-  return user.name.trim();\n+  const name = user?.name?.trim();\n+  return name || \"anonymous\";\n }\n \n export function initials(name) {\n",
    "stderr": ""
   }
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  {
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   "kind": "stdout",
   "text": "{\n  inputTokens: 123759,\n  outputTokens: 3277,\n  cacheReadTokens: 116928,\n  cacheWriteTokens: 0\n} 0.1162496\n"
  },
  {
   "atMs": 68002,
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   "name": "delete",
   "label": "box.delete",
   "durationMs": 10187,
   "result": {
    "outcome": "destroyed"
   }
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 ]
}