All lecture examples

Workshop 6 · 6A · Single owner

The team lead reached a capped stop. Its archive state is normalized for inert viewing and does not mean the team workflow finished. All three worker histories are included.

70 complete recorded events. This is a transcript, not a Canvas screenshot. Commands are historical evidence.

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    "text": "You are working on a synthetic durable reservation importer. Follow README.md and the user request. Your isolated working directory is /workspace. Use file_editor for file changes. Terminal supports only workspace listing/reading and python3 stdlib probes/tests; no shell expansion, pipes, redirection, external files or processes. Python code is restricted to the fixture modules and json, copy, unittest, re, collections, itertools, math, random, decimal, typing, functools, statistics, time. Introspection, filesystem/environment/process/network APIs and dynamic execution are unavailable. Both relative paths and the virtual /workspace alias work in tools, including cd /workspace && python3 -m unittest -v. The tool interpreter is Python 3.9 with stdlib only; avoid syntax/APIs requiring newer Python. For probes use python3 -c with a quoted Python string; use file_editor for source/test writes. Only codec.py, reducer.py, checkpoint.py, pipeline.py, test_importer.py, test_codec.py, test_reducer.py and test_checkpoint.py may change. Tools cannot access personal memory, skills, private workspaces or credentials. Use finish with exact evidence, uncertainty and changed files. Do not infer independent acceptance success."
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    {
      "description": "Run only ls/cat/wc/pwd or python3 -c probes / python3 -m unittest. The /workspace alias works, including cd /workspace && python3 -m unittest -v. No other shell syntax. Python imports/capabilities are restricted to synthetic computation. Use file_editor for writes.",
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      "description": "Signals the completion of the current task or conversation.\n\nUse this tool when:\n- You have successfully completed the user's requested task\n- You cannot proceed further due to technical limitations or missing information\n\nThe message should include:\n- A clear summary of actions taken and their results\n- Any next steps for the user\n- Explanation if you're unable to complete the task\n- Any follow-up questions if more information is needed\n",
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        "text": "Read README.md as the complete acceptance contract. Repair the synthetic durable reservation importer, using only this workspace and the approved tools. Add regression tests. Preserve public interfaces, exact identifiers, atomicity, detachment and restart/replay equivalence. No grading/reference access, external files, network, installations, personal memory, skills or commits. Report changed files, exact commands/results, remaining uncertainty and integration fixes. Do not claim independent hidden-check success. Complete codec.py, reducer.py, checkpoint.py, pipeline.py and all tests yourself without delegation. You have 60 iterations total."
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        "text": "1\t# Durable reservation importer\n2\t\n3\tThis is a deliberately prepared implementation exercise. The starter has deliberately seeded defects in otherwise complete implementations, not a historical agent failure. Use Python standard library only. Implement four modules. No network, concurrency or persistent disk storage is required. Only codec.py, reducer.py, checkpoint.py, pipeline.py, test_importer.py, test_codec.py, test_reducer.py and test_checkpoint.py may change.\n4\t\n5\t## Shared interfaces and state\n6\t\n7\t`codec.parse_event(line)` returns a canonical event dictionary from a JSON string. `reducer.empty_state()` returns `{\"stock\": {}, \"requests\": {}, \"seen\": {}}`. `reducer.apply_event(state, event)` takes a valid state and a canonical event and returns a NEW state. `checkpoint.dump_state(state)` returns canonical JSON text; `checkpoint.load_state(text)` returns a validated state. `pipeline.import_batch(state, lines)` takes a one-pass iterable of JSON strings and returns a new state. `pipeline.resume(text, lines)` loads a checkpoint, imports a batch, and returns the new canonical checkpoint text.\n8\t\n9\tThe exact state shape is:\n10\t\n11\t- stock: dictionary of nonempty string SKU to nonnegative integer quantity.\n12\t- requests: dictionary of nonempty string request ID to dictionary of nonempty SKU to positive integer quantity. Empty request dictionaries are allowed.\n13\t- seen: dictionary of nonempty string event ID to canonical event dictionary. Each key equals that event's id. A seen record persists after cancellation.\n14\t\n15\tBooleans are never integer quantities. Identifiers may contain whitespace, pipes, backslashes and Unicode; preserve their exact content. No Unicode normalization or stripping. Empty strings are forbidden, but a space alone is a nonempty string. Input state and every nested input object must remain unchanged on success and failure. Returned objects must have no mutable aliases into input state or input events. Replaying an event must also return detached data.\n16\t\n17\t## Events and canonicalization\n18\t\n19\tAccept precisely these object shapes, rejecting extra or missing fields with ValueError:\n20\t\n21\t- `{\"id\": ID, \"op\": \"restock\", \"sku\": SKU, \"qty\": Q}` where Q is a positive integer.\n22\t- `{\"id\": ID, \"op\": \"reserve\", \"request\": REQUEST, \"lines\": [[SKU, Q], ...]}`. Each input line is a JSON array of exactly two items. Q is a positive integer. Aggregate duplicate SKU quantities and sort by SKU using Python string ordering. Canonical lines are arrays of two items, never tuples. Empty lines are allowed.\n23\t- `{\"id\": ID, \"op\": \"cancel\", \"request\": REQUEST}`.\n24\t\n25\tIDs, SKU and REQUEST are nonempty strings. Reject malformed JSON, duplicate JSON object keys at any depth, non-object events and unsupported operations. Whitespace surrounding JSON text is accepted. Preserve ID/string values. Reject invalid input with ValueError, including non-string input to parse_event. Only parse_event must validate raw events; apply_event may assume its event is already canonical.\n26\t\n27\t## State transitions and identity\n28\t\n29\tCheck seen BEFORE business preconditions. If the event ID was seen with an equal canonical event, return a detached state with no change. If the ID was seen with a different event, raise ValueError. Thus reordered or split reserve lines that canonicalize identically are exact replays. Event IDs are global across operations and can never be reused for a different event, even after cancellation.\n30\t\n31\tRestock adds Q and may introduce a new SKU. Reserve requires an inactive request ID, all named SKUs already present in stock, and sufficient stock for ALL aggregate quantities. Deduct atomically and remember its quantities in requests. Empty reserve succeeds and creates an active empty request. Cancel requires an active request, restores its quantities and removes it. A request ID may be reused after cancellation, using a new event ID. Unknown/cancelled requests and insufficient/unknown stock raise ValueError. Rejected events must never enter seen. A later corrected batch can retry the same event ID.\n32\t\n33\t## Checkpoints\n34\t\n35\tThe exact wrapper is `{\"version\": 1, \"state\": STATE}`. dump_state validates state, then uses json.dumps with ensure_ascii=False, sort_keys=True, separators=(',', ':'), plus exactly one final newline. load_state accepts surrounding JSON whitespace and validates the wrapper and complete state. Reject duplicate JSON keys, extra/missing wrapper or state keys, a boolean or non-1 version, malformed JSON and invalid field types/quantities with ValueError.\n36\t\n37\tFor seen values, call parse_event on their JSON representation and require equality with the original value. Thus a checkpoint with unaggregated/reordered reserve lines is invalid; loading must not silently repair it. Validate all nested state fields. Structural validation is required; reconstructing historical stock or proving seen/request consistency is out of scope. Dumping an invalid state also raises ValueError. Loading/dumping must not mutate input data. Two equal valid states with different dictionary insertion order produce exactly equal checkpoint text. Loading a dumped state preserves all three state fields and their replay behavior, including seen IDs of cancelled requests. Floats and booleans are invalid quantities anywhere in state.\n38\t\n39\t## Integration and rollback\n40\t\n41\tpipeline uses codec.parse_event and reducer.apply_event. Process lines in order and consume the iterable once. All-or-nothing batch semantics: if any parse or transition raises ValueError, raise ValueError and leave the caller's entire state unchanged. Empty batch returns a detached equal state. resume must use checkpoint.load_state, import_batch, then checkpoint.dump_state.\n42\t\n43\tA real workflow must be able to stop after any event, dump and load its state, and finish the remaining events with exactly the same state and byte-identical final checkpoint as uninterrupted processing. This includes replaying old events after restart. Do not discard seen or request information to shrink checkpoints.\n44\t\n45\t## Verification\n46\t\n47\tThe starter test is only an import smoke test. Add regression tests and run them. Verify malformed input, canonical replay, cancellation/reuse, nested aliasing, failed batch rollback and restart equivalence. Report changed files, exact check commands/results, integration fixes and remaining uncertainty. The external course checker lives outside this workspace. Do not access it, other workspaces, parent directories, credentials or network services. Do not install dependencies, commit or write memory files. Use PYTHONDONTWRITEBYTECODE=1. Path rules are instructions, not filesystem isolation."
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        "text": "1\timport json\n2\t\n3\t\n4\tdef unique_object(pairs):\n5\t    result = {}\n6\t    for key, value in pairs:\n7\t        if key in result:\n8\t            raise ValueError('duplicate key')\n9\t        result[key] = value\n10\t    return result\n11\t\n12\t\n13\tdef read_json(text):\n14\t    if not isinstance(text, str):\n15\t        raise ValueError('text required')\n16\t    try:\n17\t        return json.loads(text, object_pairs_hook=unique_object)\n18\t    except (TypeError, json.JSONDecodeError) as exc:\n19\t        raise ValueError('invalid JSON') from exc\n20\t\n21\t\n22\tdef string(value):\n23\t    return isinstance(value, str) and bool(value)\n24\t\n25\t\n26\tdef integer(value, minimum):\n27\t    return isinstance(value, int) and value >= minimum\n28\t\n29\t\n30\tdef parse_event(line):\n31\t    event = read_json(line)\n32\t    if not isinstance(event, dict) or not string(event.get('id')):\n33\t        raise ValueError('event object and id required')\n34\t    op = event.get('op')\n35\t    fields = {'restock': {'id', 'op', 'sku', 'qty'},\n36\t              'reserve': {'id', 'op', 'request', 'lines'},\n37\t              'cancel': {'id', 'op', 'request'}}\n38\t    if not isinstance(op, str) or op not in fields or set(event) != fields[op]:\n39\t        raise ValueError('operation or fields')\n40\t    if op == 'restock':\n41\t        if not string(event['sku']) or not integer(event['qty'], 1):\n42\t            raise ValueError('restock fields')\n43\t    elif not string(event['request']):\n44\t        raise ValueError('request')\n45\t    if op == 'reserve':\n46\t        if not isinstance(event['lines'], list):\n47\t            raise ValueError('lines')\n48\t        quantities = {}\n49\t        for pair in event['lines']:\n50\t            if not isinstance(pair, list) or len(pair) != 2:\n51\t                raise ValueError('pair')\n52\t            sku, qty = pair\n53\t            if not string(sku) or not integer(qty, 1):\n54\t                raise ValueError('quantity')\n55\t            quantities[sku] = qty\n56\t        event['lines'] = [[sku, qty] for sku, qty in sorted(quantities.items())]\n57\t    return event"
      }
    ],
    "is_error": false,
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{
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  "parent_id": "68f2e90a-9798-445a-92fd-35d24f86dcf3",
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  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "1\tfrom copy import deepcopy\n2\t\n3\t\n4\tdef empty_state():\n5\t    return {'stock': {}, 'requests': {}, 'seen': {}}\n6\t\n7\t\n8\tdef apply_event(state, event):\n9\t    result = dict(state)\n10\t    event_id = event['id']\n11\t    if event_id in result['seen']:\n12\t        if result['seen'][event_id] != event:\n13\t            raise ValueError('conflicting event id')\n14\t        return result\n15\t    stock, requests = result['stock'], result['requests']\n16\t    if event['op'] == 'restock':\n17\t        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\n18\t    elif event['op'] == 'reserve':\n19\t        request = event['request']\n20\t        lines = dict(event['lines'])\n21\t        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\n22\t            raise ValueError('cannot reserve')\n23\t        for sku, qty in lines.items():\n24\t            stock[sku] -= qty\n25\t        requests[request] = lines\n26\t    else:\n27\t        request = event['request']\n28\t        if request not in requests:\n29\t            raise ValueError('inactive request')\n30\t        for sku, qty in requests[request].items():\n31\t            stock[sku] += qty\n32\t    result['seen'][event_id] = deepcopy(event)\n33\t    return result"
      }
    ],
    "is_error": false,
    "command": "view",
    "path": "/workspace/reducer.py",
    "prev_exist": true,
    "old_content": null,
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    "kind": "FileEditorObservation"
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{
  "id": "622b56a2-4d10-4985-a333-99989d79f9e8",
  "timestamp": "2026-10-19T08:26:05.112556",
  "source": "environment",
  "parent_id": "c27e824f-2b44-420b-a4de-fbd59b4f8eda",
  "tool_name": "file_editor",
  "tool_call_id": "call_5ff1d96922e745f6ab50a932",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "1\timport json\n2\tfrom copy import deepcopy\n3\tfrom codec import parse_event, read_json, string, integer\n4\t\n5\t\n6\tdef validate(state):\n7\t    if not isinstance(state, dict) or set(state) != {'stock', 'requests', 'seen'}:\n8\t        raise ValueError('state fields')\n9\t    if not all(isinstance(state[key], dict) for key in state):\n10\t        raise ValueError('state mappings')\n11\t    for sku, qty in state['stock'].items():\n12\t        if not string(sku) or not integer(qty, 0):\n13\t            raise ValueError('stock')\n14\t    for request, lines in state['requests'].items():\n15\t        if not string(request) or not isinstance(lines, dict):\n16\t            raise ValueError('requests')\n17\t        for sku, qty in lines.items():\n18\t            if not string(sku) or not integer(qty, 1):\n19\t                raise ValueError('request quantity')\n20\t    for event_id, event in state['seen'].items():\n21\t        if not string(event_id) or not isinstance(event, dict):\n22\t            raise ValueError('seen')\n23\t        try:\n24\t            canonical = parse_event(json.dumps(event, ensure_ascii=False))\n25\t        except (TypeError, ValueError) as exc:\n26\t            raise ValueError('seen event') from exc\n27\t        if canonical != event or event_id != event['id']:\n28\t            raise ValueError('noncanonical seen event')\n29\t    return state\n30\t\n31\t\n32\tdef dump_state(state):\n33\t    validate(state)\n34\t    state = deepcopy(state)\n35\t    state['seen'] = {}\n36\t    return json.dumps({'version': 1, 'state': state}, ensure_ascii=False,\n37\t                      sort_keys=False, separators=(',', ':')) + '\\n'\n38\t\n39\t\n40\tdef load_state(text):\n41\t    wrapper = read_json(text)\n42\t    if not isinstance(wrapper, dict) or set(wrapper) != {'version', 'state'}:\n43\t        raise ValueError('wrapper')\n44\t    if type(wrapper['version']) is not int or wrapper['version'] != 1:\n45\t        raise ValueError('version')\n46\t    return deepcopy(validate(wrapper['state']))"
      }
    ],
    "is_error": false,
    "command": "view",
    "path": "/workspace/checkpoint.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
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{
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  "timestamp": "2026-10-19T08:26:05.179235",
  "source": "environment",
  "parent_id": "622b56a2-4d10-4985-a333-99989d79f9e8",
  "tool_name": "file_editor",
  "tool_call_id": "call_8c59a0f3dd214bf18e658fdb",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "1\tfrom copy import deepcopy\n2\tfrom codec import parse_event\n3\tfrom reducer import apply_event\n4\tfrom checkpoint import load_state, dump_state\n5\t\n6\t\n7\tdef import_batch(state, lines):\n8\t    result = deepcopy(state)\n9\t    for line in lines:\n10\t        result = apply_event(result, parse_event(line))\n11\t    return result\n12\t\n13\t\n14\tdef resume(text, lines):\n15\t    return dump_state(import_batch(load_state(text), lines))"
      }
    ],
    "is_error": false,
    "command": "view",
    "path": "/workspace/pipeline.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
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{
  "id": "d7623c04-61c5-45c3-9c66-6b88ef17d161",
  "timestamp": "2026-10-19T08:26:05.179533",
  "source": "environment",
  "parent_id": "ea320bea-de34-4b48-85bb-3ec38ab3bc63",
  "tool_name": "file_editor",
  "tool_call_id": "call_b584e68bb1694faabbe6a792",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "1\timport unittest\n2\t\n3\tclass Smoke(unittest.TestCase):\n4\t    def test_imports(self):\n5\t        import codec, reducer, checkpoint, pipeline"
      }
    ],
    "is_error": false,
    "command": "view",
    "path": "/workspace/test_importer.py",
    "prev_exist": true,
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  "source": "agent",
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    "old_str": "def integer(value, minimum):\n    return isinstance(value, int) and value >= minimum",
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  "critic_result": null,
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/codec.py\", \"old_str\": \"def integer(value, minimum):\\n    return isinstance(value, int) and value >= minimum\", \"new_str\": \"def integer(value, minimum):\\n    return (isinstance(value, int) and not isinstance(value, bool)\\n            and value >= minimum)\"}",
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{
  "id": "b368e188-71ff-45c2-b125-99dc950a07f9",
  "timestamp": "2026-10-19T08:27:08.986460",
  "source": "environment",
  "parent_id": "2302dd6d-a247-4052-afc5-7aa9fbc4f0bf",
  "tool_name": "file_editor",
  "tool_call_id": "call_b830bb5040554faf9df1cc90",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/codec.py\nimport json\n\n\ndef unique_object(pairs):\n    result = {}\n    for key, value in pairs:\n        if key in result:\n            raise ValueError('duplicate key')\n        result[key] = value\n    return result\n\n\ndef read_json(text):\n    if not isinstance(text, str):\n        raise ValueError('text required')\n    try:\n        return json.loads(text, object_pairs_hook=unique_object)\n    except (TypeError, json.JSONDecodeError) as exc:\n        raise ValueError('invalid JSON') from exc\n\n\ndef string(value):\n    return isinstance(value, str) and bool(value)\n\n\ndef integer(value, minimum):\n    return (isinstance(value, int) and not isinstance(value, bool)\n            and value >= minimum)\n\n\ndef parse_event(line):\n    event = read_json(line)\n    if not isinstance(event, dict) or not string(event.get('id')):\n        raise ValueError('event object and id required')\n    op = event.get('op')\n    fields = {'restock': {'id', 'op', 'sku', 'qty'},\n              'reserve': {'id', 'op', 'request', 'lines'},\n              'cancel': {'id', 'op', 'request'}}\n    if not isinstance(op, str) or op not in fields or set(event) != fields[op]:\n        raise ValueError('operation or fields')\n    if op == 'restock':\n        if not string(event['sku']) or not integer(event['qty'], 1):\n            raise ValueError('restock fields')\n    elif not string(event['request']):\n        raise ValueError('request')\n    if op == 'reserve':\n        if not isinstance(event['lines'], list):\n            raise ValueError('lines')\n        quantities = {}\n        for pair in event['lines']:\n            if not isinstance(pair, list) or len(pair) != 2:\n                raise ValueError('pair')\n            sku, qty = pair\n            if not string(sku) or not integer(qty, 1):\n                raise ValueError('quantity')\n            quantities[sku] = qty\n        event['lines'] = [[sku, qty] for sku, qty in sorted(quantities.items())]\n    return event\n"
      }
    ],
    "is_error": false,
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{
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  "timestamp": "2026-10-19T08:27:10.947037",
  "source": "agent",
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    "name": "file_editor",
    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/codec.py\", \"old_str\": \"quantities[sku] = qty\", \"new_str\": \"quantities[sku] = quantities.get(sku, 0) + qty\"}",
    "origin": "completion"
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  "llm_response_id": "gen-1792416429-0PL3erQnUbS2v2vlWwtb",
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  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/codec.py\", \"old_str\": \"quantities[sku] = qty\", \"new_str\": \"quantities[sku] = quantities.get(sku, 0) + qty\"}",
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{
  "id": "202189da-a772-4397-9be0-2554d35878c1",
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  "source": "environment",
  "parent_id": "62762f5a-c1b1-4fec-a924-8f02f37a11b4",
  "tool_name": "file_editor",
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  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/codec.py\nimport json\n\n\ndef unique_object(pairs):\n    result = {}\n    for key, value in pairs:\n        if key in result:\n            raise ValueError('duplicate key')\n        result[key] = value\n    return result\n\n\ndef read_json(text):\n    if not isinstance(text, str):\n        raise ValueError('text required')\n    try:\n        return json.loads(text, object_pairs_hook=unique_object)\n    except (TypeError, json.JSONDecodeError) as exc:\n        raise ValueError('invalid JSON') from exc\n\n\ndef string(value):\n    return isinstance(value, str) and bool(value)\n\n\ndef integer(value, minimum):\n    return (isinstance(value, int) and not isinstance(value, bool)\n            and value >= minimum)\n\n\ndef parse_event(line):\n    event = read_json(line)\n    if not isinstance(event, dict) or not string(event.get('id')):\n        raise ValueError('event object and id required')\n    op = event.get('op')\n    fields = {'restock': {'id', 'op', 'sku', 'qty'},\n              'reserve': {'id', 'op', 'request', 'lines'},\n              'cancel': {'id', 'op', 'request'}}\n    if not isinstance(op, str) or op not in fields or set(event) != fields[op]:\n        raise ValueError('operation or fields')\n    if op == 'restock':\n        if not string(event['sku']) or not integer(event['qty'], 1):\n            raise ValueError('restock fields')\n    elif not string(event['request']):\n        raise ValueError('request')\n    if op == 'reserve':\n        if not isinstance(event['lines'], list):\n            raise ValueError('lines')\n        quantities = {}\n        for pair in event['lines']:\n            if not isinstance(pair, list) or len(pair) != 2:\n                raise ValueError('pair')\n            sku, qty = pair\n            if not string(sku) or not integer(qty, 1):\n                raise ValueError('quantity')\n            quantities[sku] = quantities.get(sku, 0) + qty\n        event['lines'] = [[sku, qty] for sku, qty in sorted(quantities.items())]\n    return event\n"
      }
    ],
    "is_error": false,
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{
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    "old_str": "def apply_event(state, event):\n    result = dict(state)\n    event_id = event['id']",
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    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/reducer.py\", \"old_str\": \"def apply_event(state, event):\\n    result = dict(state)\\n    event_id = event['id']\", \"new_str\": \"def apply_event(state, event):\\n    result = deepcopy(state)\\n    event_id = event['id']\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792416431-tzpLLZfmMMXldPSwtOtJ",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/reducer.py\", \"old_str\": \"def apply_event(state, event):\\n    result = dict(state)\\n    event_id = event['id']\", \"new_str\": \"def apply_event(state, event):\\n    result = deepcopy(state)\\n    event_id = event['id']\"}",
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{
  "id": "9ce8e189-6515-434a-a7e3-216f1be957d9",
  "timestamp": "2026-10-19T08:27:12.778121",
  "source": "environment",
  "parent_id": "5f3063c9-cdfe-46da-9c59-b32e800d2ea2",
  "tool_name": "file_editor",
  "tool_call_id": "call_1ac50e4ef35243a09f4eee6c",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/reducer.py\nfrom copy import deepcopy\n\n\ndef empty_state():\n    return {'stock': {}, 'requests': {}, 'seen': {}}\n\n\ndef apply_event(state, event):\n    result = deepcopy(state)\n    event_id = event['id']\n    if event_id in result['seen']:\n        if result['seen'][event_id] != event:\n            raise ValueError('conflicting event id')\n        return result\n    stock, requests = result['stock'], result['requests']\n    if event['op'] == 'restock':\n        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\n    elif event['op'] == 'reserve':\n        request = event['request']\n        lines = dict(event['lines'])\n        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\n            raise ValueError('cannot reserve')\n        for sku, qty in lines.items():\n            stock[sku] -= qty\n        requests[request] = lines\n    else:\n        request = event['request']\n        if request not in requests:\n            raise ValueError('inactive request')\n        for sku, qty in requests[request].items():\n            stock[sku] += qty\n    result['seen'][event_id] = deepcopy(event)\n    return result\n"
      }
    ],
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{
  "id": "0fcd4109-828c-4500-89f8-a0746fb85150",
  "timestamp": "2026-10-19T08:27:15.334918",
  "source": "agent",
  "parent_id": "9ce8e189-6515-434a-a7e3-216f1be957d9",
  "responses_reasoning_item": null,
  "action": {
    "command": "str_replace",
    "path": "/workspace/reducer.py",
    "file_text": null,
    "old_str": "for sku, qty in requests[request].items():\n            stock[sku] += qty\n    result['seen'][event_id] = deepcopy(event)",
    "new_str": "for sku, qty in requests[request].items():\n            stock[sku] += qty\n        del requests[request]\n    result['seen'][event_id] = deepcopy(event)",
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_ae1bea4d0c58408e82339564",
  "tool_call": {
    "id": "call_ae1bea4d0c58408e82339564",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/reducer.py\", \"old_str\": \"for sku, qty in requests[request].items():\\n            stock[sku] += qty\\n    result['seen'][event_id] = deepcopy(event)\", \"new_str\": \"for sku, qty in requests[request].items():\\n            stock[sku] += qty\\n        del requests[request]\\n    result['seen'][event_id] = deepcopy(event)\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792416432-f7CBM6hxijGKyoo4bmps",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/reducer.py\", \"old_str\": \"for sku, qty in requests[request].items():\\n            stock[sku] += qty\\n    result['seen'][event_id] = deepcopy(event)\", \"new_str\": \"for sku, qty in requests[request].items():\\n            stock[sku] += qty\\n        del requests[request]\\n    result['seen'][event_id] = deepcopy(event)\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "f041f028-5d0f-4e5c-bf5b-06e92861e460",
  "timestamp": "2026-10-19T08:27:15.427110",
  "source": "environment",
  "parent_id": "0fcd4109-828c-4500-89f8-a0746fb85150",
  "tool_name": "file_editor",
  "tool_call_id": "call_ae1bea4d0c58408e82339564",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/reducer.py\nfrom copy import deepcopy\n\n\ndef empty_state():\n    return {'stock': {}, 'requests': {}, 'seen': {}}\n\n\ndef apply_event(state, event):\n    result = deepcopy(state)\n    event_id = event['id']\n    if event_id in result['seen']:\n        if result['seen'][event_id] != event:\n            raise ValueError('conflicting event id')\n        return result\n    stock, requests = result['stock'], result['requests']\n    if event['op'] == 'restock':\n        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\n    elif event['op'] == 'reserve':\n        request = event['request']\n        lines = dict(event['lines'])\n        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\n            raise ValueError('cannot reserve')\n        for sku, qty in lines.items():\n            stock[sku] -= qty\n        requests[request] = lines\n    else:\n        request = event['request']\n        if request not in requests:\n            raise ValueError('inactive request')\n        for sku, qty in requests[request].items():\n            stock[sku] += qty\n        del requests[request]\n    result['seen'][event_id] = deepcopy(event)\n    return result\n"
      }
    ],
    "is_error": false,
    "command": "str_replace",
    "path": "/workspace/reducer.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
  },
  "action_id": "0fcd4109-828c-4500-89f8-a0746fb85150",
  "extended_content": [],
  "kind": "ObservationEvent"
}

{
  "id": "a3dc487a-5e55-4f63-b36b-612a569e7e60",
  "timestamp": "2026-10-19T08:27:17.561815",
  "source": "agent",
  "parent_id": "f041f028-5d0f-4e5c-bf5b-06e92861e460",
  "responses_reasoning_item": null,
  "action": {
    "command": "str_replace",
    "path": "/workspace/checkpoint.py",
    "file_text": null,
    "old_str": "def dump_state(state):\n    validate(state)\n    state = deepcopy(state)\n    state['seen'] = {}\n    return json.dumps({'version': 1, 'state': state}, ensure_ascii=False,\n                      sort_keys=False, separators=(',', ':')) + '\\n'",
    "new_str": "def dump_state(state):\n    validate(state)\n    return json.dumps({'version': 1, 'state': state}, ensure_ascii=False,\n                      sort_keys=True, separators=(',', ':')) + '\\n'",
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_8533b4d045be4b5b85ddbcab",
  "tool_call": {
    "id": "call_8533b4d045be4b5b85ddbcab",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/checkpoint.py\", \"old_str\": \"def dump_state(state):\\n    validate(state)\\n    state = deepcopy(state)\\n    state['seen'] = {}\\n    return json.dumps({'version': 1, 'state': state}, ensure_ascii=False,\\n                      sort_keys=False, separators=(',', ':')) + '\\\\n'\", \"new_str\": \"def dump_state(state):\\n    validate(state)\\n    return json.dumps({'version': 1, 'state': state}, ensure_ascii=False,\\n                      sort_keys=True, separators=(',', ':')) + '\\\\n'\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792416435-2sxe11Ccy1pPU2RPgeX0",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/checkpoint.py\", \"old_str\": \"def dump_state(state):\\n    validate(state)\\n    state = deepcopy(state)\\n    state['seen'] = {}\\n    return json.dumps({'version': 1, 'state': state}, ensure_ascii=False,\\n                      sort_keys=False, separators=(',', ':')) + '\\\\n'\", \"new_str\": \"def dump_state(state):\\n    validate(state)\\n    return json.dumps({'version': 1, 'state': state}, ensure_ascii=False,\\n                      sort_keys=True, separators=(',', ':')) + '\\\\n'\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "360593b1-c89e-4db0-814e-8a27782685ae",
  "timestamp": "2026-10-19T08:27:17.657794",
  "source": "environment",
  "parent_id": "a3dc487a-5e55-4f63-b36b-612a569e7e60",
  "tool_name": "file_editor",
  "tool_call_id": "call_8533b4d045be4b5b85ddbcab",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/checkpoint.py\nimport json\nfrom copy import deepcopy\nfrom codec import parse_event, read_json, string, integer\n\n\ndef validate(state):\n    if not isinstance(state, dict) or set(state) != {'stock', 'requests', 'seen'}:\n        raise ValueError('state fields')\n    if not all(isinstance(state[key], dict) for key in state):\n        raise ValueError('state mappings')\n    for sku, qty in state['stock'].items():\n        if not string(sku) or not integer(qty, 0):\n            raise ValueError('stock')\n    for request, lines in state['requests'].items():\n        if not string(request) or not isinstance(lines, dict):\n            raise ValueError('requests')\n        for sku, qty in lines.items():\n            if not string(sku) or not integer(qty, 1):\n                raise ValueError('request quantity')\n    for event_id, event in state['seen'].items():\n        if not string(event_id) or not isinstance(event, dict):\n            raise ValueError('seen')\n        try:\n            canonical = parse_event(json.dumps(event, ensure_ascii=False))\n        except (TypeError, ValueError) as exc:\n            raise ValueError('seen event') from exc\n        if canonical != event or event_id != event['id']:\n            raise ValueError('noncanonical seen event')\n    return state\n\n\ndef dump_state(state):\n    validate(state)\n    return json.dumps({'version': 1, 'state': state}, ensure_ascii=False,\n                      sort_keys=True, separators=(',', ':')) + '\\n'\n\n\ndef load_state(text):\n    wrapper = read_json(text)\n    if not isinstance(wrapper, dict) or set(wrapper) != {'version', 'state'}:\n        raise ValueError('wrapper')\n    if type(wrapper['version']) is not int or wrapper['version'] != 1:\n        raise ValueError('version')\n    return deepcopy(validate(wrapper['state']))\n"
      }
    ],
    "is_error": false,
    "command": "str_replace",
    "path": "/workspace/checkpoint.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
  },
  "action_id": "a3dc487a-5e55-4f63-b36b-612a569e7e60",
  "extended_content": [],
  "kind": "ObservationEvent"
}

{
  "id": "5cf0e3ac-8b56-46cf-ae8f-6e074f78c7e0",
  "timestamp": "2026-10-19T08:27:26.842099",
  "source": "agent",
  "parent_id": "360593b1-c89e-4db0-814e-8a27782685ae",
  "responses_reasoning_item": null,
  "action": {
    "command": "create",
    "path": "/workspace/test_codec.py",
    "file_text": "import unittest\nimport codec\n\n\nclass ParseEventTests(unittest.TestCase):\n    def test_restock(self):\n        ev = codec.parse_event('{\"id\":\"a\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":5}')\n        self.assertEqual(ev, {'id': 'a', 'op': 'restock', 'sku': 'S', 'qty': 5})\n\n    def test_whitespace_surrounding(self):\n        ev = codec.parse_event('  {\"id\":\"a\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":1}  ')\n        self.assertEqual(ev['id'], 'a')\n\n    def test_reserve_sorts_and_aggregates(self):\n        ev = codec.parse_event(\n            '{\"id\":\"r\",\"op\":\"reserve\",\"request\":\"req\",\"lines\":[[\"b\",2],[\"a\",1],[\"b\",3]]}')\n        self.assertEqual(ev['lines'], [['a', 1], ['b', 5]])\n\n    def test_reserve_empty_lines(self):\n        ev = codec.parse_event('{\"id\":\"r\",\"op\":\"reserve\",\"request\":\"req\",\"lines\":[]}')\n        self.assertEqual(ev['lines'], [])\n\n    def test_cancel(self):\n        ev = codec.parse_event('{\"id\":\"c\",\"op\":\"cancel\",\"request\":\"req\"}')\n        self.assertEqual(ev, {'id': 'c', 'op': 'cancel', 'request': 'req'})\n\n    def test_preserves_strings_exactly(self):\n        ev = codec.parse_event(\n            '{\"id\":\"a b\\\\\\\\c|d\",\"op\":\"restock\",\"sku\":\" x | \\\\u00e9 \",\"qty\":1}')\n        self.assertEqual(ev['id'], 'a b\\\\c|d')\n        self.assertEqual(ev['sku'], ' x | \\u00e9 ')\n\n    def test_rejects_non_string(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event(42)\n\n    def test_rejects_malformed_json(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{bad')\n\n    def test_rejects_non_object(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('[1,2]')\n\n    def test_rejects_extra_field(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":1,\"x\":2}')\n\n    def test_rejects_missing_field(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"op\":\"restock\",\"qty\":1}')\n\n    def test_rejects_unknown_op(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"op\":\"nope\",\"sku\":\"S\",\"qty\":1}')\n\n    def test_rejects_duplicate_keys(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"id\":\"b\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":1}')\n\n    def test_rejects_boolean_quantity(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":true}')\n\n    def test_rejects_float_quantity(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":1.5}')\n\n    def test_rejects_zero_or_negative_quantity(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":0}')\n\n    def test_rejects_empty_id(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":1}')\n\n    def test_space_is_nonempty_id(self):\n        ev = codec.parse_event('{\"id\":\" \",\"op\":\"restock\",\"sku\":\"S\",\"qty\":1}')\n        self.assertEqual(ev['id'], ' ')\n\n    def test_rejects_reserve_bad_pair(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"r\",\"op\":\"reserve\",\"request\":\"q\",\"lines\":[[\"a\"]]}')\n\n    def test_rejects_reserve_non_list_lines(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"r\",\"op\":\"reserve\",\"request\":\"q\",\"lines\":\"x\"}')\n\n\nif __name__ == '__main__':\n    unittest.main()",
    "old_str": null,
    "new_str": null,
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_c644882ee3654ba99a3a7967",
  "tool_call": {
    "id": "call_c644882ee3654ba99a3a7967",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"create\", \"path\": \"/workspace/test_codec.py\", \"file_text\": \"import unittest\\nimport codec\\n\\n\\nclass ParseEventTests(unittest.TestCase):\\n    def test_restock(self):\\n        ev = codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":5}')\\n        self.assertEqual(ev, {'id': 'a', 'op': 'restock', 'sku': 'S', 'qty': 5})\\n\\n    def test_whitespace_surrounding(self):\\n        ev = codec.parse_event('  {\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1}  ')\\n        self.assertEqual(ev['id'], 'a')\\n\\n    def test_reserve_sorts_and_aggregates(self):\\n        ev = codec.parse_event(\\n            '{\\\"id\\\":\\\"r\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"req\\\",\\\"lines\\\":[[\\\"b\\\",2],[\\\"a\\\",1],[\\\"b\\\",3]]}')\\n        self.assertEqual(ev['lines'], [['a', 1], ['b', 5]])\\n\\n    def test_reserve_empty_lines(self):\\n        ev = codec.parse_event('{\\\"id\\\":\\\"r\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"req\\\",\\\"lines\\\":[]}')\\n        self.assertEqual(ev['lines'], [])\\n\\n    def test_cancel(self):\\n        ev = codec.parse_event('{\\\"id\\\":\\\"c\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"req\\\"}')\\n        self.assertEqual(ev, {'id': 'c', 'op': 'cancel', 'request': 'req'})\\n\\n    def test_preserves_strings_exactly(self):\\n        ev = codec.parse_event(\\n            '{\\\"id\\\":\\\"a b\\\\\\\\\\\\\\\\c|d\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\" x | \\\\\\\\u00e9 \\\",\\\"qty\\\":1}')\\n        self.assertEqual(ev['id'], 'a b\\\\\\\\c|d')\\n        self.assertEqual(ev['sku'], ' x | \\\\u00e9 ')\\n\\n    def test_rejects_non_string(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event(42)\\n\\n    def test_rejects_malformed_json(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{bad')\\n\\n    def test_rejects_non_object(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('[1,2]')\\n\\n    def test_rejects_extra_field(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1,\\\"x\\\":2}')\\n\\n    def test_rejects_missing_field(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"qty\\\":1}')\\n\\n    def test_rejects_unknown_op(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"nope\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1}')\\n\\n    def test_rejects_duplicate_keys(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"id\\\":\\\"b\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1}')\\n\\n    def test_rejects_boolean_quantity(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":true}')\\n\\n    def test_rejects_float_quantity(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1.5}')\\n\\n    def test_rejects_zero_or_negative_quantity(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":0}')\\n\\n    def test_rejects_empty_id(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1}')\\n\\n    def test_space_is_nonempty_id(self):\\n        ev = codec.parse_event('{\\\"id\\\":\\\" \\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1}')\\n        self.assertEqual(ev['id'], ' ')\\n\\n    def test_rejects_reserve_bad_pair(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"r\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"q\\\",\\\"lines\\\":[[\\\"a\\\"]]}')\\n\\n    def test_rejects_reserve_non_list_lines(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"r\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"q\\\",\\\"lines\\\":\\\"x\\\"}')\\n\\n\\nif __name__ == '__main__':\\n    unittest.main()\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792416437-MhTAkxL7Pi13SP2RBiax",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"create\", \"path\": \"/workspace/test_codec.py\", \"file_text\": \"import unittest\\nimport codec\\n\\n\\nclass ParseEventTests(unittest.TestCase):\\n    def test_restock(self):\\n        ev = codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":5}')\\n        self.assertEqual(ev, {'id': 'a', 'op': 'restock', 'sku': 'S', 'qty': 5})\\n\\n    def test_whitespace_surrounding(self):\\n        ev = codec.parse_event('  {\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1}  ')\\n        self.assertEqual(ev['id'], 'a')\\n\\n    def test_reserve_sorts_and_aggregates(self):\\n        ev = codec.parse_event(\\n            '{\\\"id\\\":\\\"r\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"req\\\",\\\"lines\\\":[[\\\"b\\\",2],[\\\"a\\\",1],[\\\"b\\\",3]]}')\\n        self.assertEqual(ev['lines'], [['a', 1], ['b', 5]])\\n\\n    def test_reserve_empty_lines(self):\\n        ev = codec.parse_event('{\\\"id\\\":\\\"r\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"req\\\",\\\"lines\\\":[]}')\\n        self.assertEqual(ev['lines'], [])\\n\\n    def test_cancel(self):\\n        ev = codec.parse_event('{\\\"id\\\":\\\"c\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"req\\\"}')\\n        self.assertEqual(ev, {'id': 'c', 'op': 'cancel', 'request': 'req'})\\n\\n    def test_preserves_strings_exactly(self):\\n        ev = codec.parse_event(\\n            '{\\\"id\\\":\\\"a b\\\\\\\\\\\\\\\\c|d\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\" x | \\\\\\\\u00e9 \\\",\\\"qty\\\":1}')\\n        self.assertEqual(ev['id'], 'a b\\\\\\\\c|d')\\n        self.assertEqual(ev['sku'], ' x | \\\\u00e9 ')\\n\\n    def test_rejects_non_string(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event(42)\\n\\n    def test_rejects_malformed_json(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{bad')\\n\\n    def test_rejects_non_object(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('[1,2]')\\n\\n    def test_rejects_extra_field(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1,\\\"x\\\":2}')\\n\\n    def test_rejects_missing_field(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"qty\\\":1}')\\n\\n    def test_rejects_unknown_op(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"nope\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1}')\\n\\n    def test_rejects_duplicate_keys(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"id\\\":\\\"b\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1}')\\n\\n    def test_rejects_boolean_quantity(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":true}')\\n\\n    def test_rejects_float_quantity(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1.5}')\\n\\n    def test_rejects_zero_or_negative_quantity(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"a\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":0}')\\n\\n    def test_rejects_empty_id(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1}')\\n\\n    def test_space_is_nonempty_id(self):\\n        ev = codec.parse_event('{\\\"id\\\":\\\" \\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"S\\\",\\\"qty\\\":1}')\\n        self.assertEqual(ev['id'], ' ')\\n\\n    def test_rejects_reserve_bad_pair(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"r\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"q\\\",\\\"lines\\\":[[\\\"a\\\"]]}')\\n\\n    def test_rejects_reserve_non_list_lines(self):\\n        with self.assertRaises(ValueError):\\n            codec.parse_event('{\\\"id\\\":\\\"r\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"q\\\",\\\"lines\\\":\\\"x\\\"}')\\n\\n\\nif __name__ == '__main__':\\n    unittest.main()\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "35a58f1c-7dbe-42d0-9229-18292c9e6f40",
  "timestamp": "2026-10-19T08:27:26.948167",
  "source": "environment",
  "parent_id": "5cf0e3ac-8b56-46cf-ae8f-6e074f78c7e0",
  "tool_name": "file_editor",
  "tool_call_id": "call_c644882ee3654ba99a3a7967",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_codec.py\nimport unittest\nimport codec\n\n\nclass ParseEventTests(unittest.TestCase):\n    def test_restock(self):\n        ev = codec.parse_event('{\"id\":\"a\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":5}')\n        self.assertEqual(ev, {'id': 'a', 'op': 'restock', 'sku': 'S', 'qty': 5})\n\n    def test_whitespace_surrounding(self):\n        ev = codec.parse_event('  {\"id\":\"a\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":1}  ')\n        self.assertEqual(ev['id'], 'a')\n\n    def test_reserve_sorts_and_aggregates(self):\n        ev = codec.parse_event(\n            '{\"id\":\"r\",\"op\":\"reserve\",\"request\":\"req\",\"lines\":[[\"b\",2],[\"a\",1],[\"b\",3]]}')\n        self.assertEqual(ev['lines'], [['a', 1], ['b', 5]])\n\n    def test_reserve_empty_lines(self):\n        ev = codec.parse_event('{\"id\":\"r\",\"op\":\"reserve\",\"request\":\"req\",\"lines\":[]}')\n        self.assertEqual(ev['lines'], [])\n\n    def test_cancel(self):\n        ev = codec.parse_event('{\"id\":\"c\",\"op\":\"cancel\",\"request\":\"req\"}')\n        self.assertEqual(ev, {'id': 'c', 'op': 'cancel', 'request': 'req'})\n\n    def test_preserves_strings_exactly(self):\n        ev = codec.parse_event(\n            '{\"id\":\"a b\\\\\\\\c|d\",\"op\":\"restock\",\"sku\":\" x | \\\\u00e9 \",\"qty\":1}')\n        self.assertEqual(ev['id'], 'a b\\\\c|d')\n        self.assertEqual(ev['sku'], ' x | \\u00e9 ')\n\n    def test_rejects_non_string(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event(42)\n\n    def test_rejects_malformed_json(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{bad')\n\n    def test_rejects_non_object(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('[1,2]')\n\n    def test_rejects_extra_field(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":1,\"x\":2}')\n\n    def test_rejects_missing_field(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"op\":\"restock\",\"qty\":1}')\n\n    def test_rejects_unknown_op(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"op\":\"nope\",\"sku\":\"S\",\"qty\":1}')\n\n    def test_rejects_duplicate_keys(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"id\":\"b\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":1}')\n\n    def test_rejects_boolean_quantity(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":true}')\n\n    def test_rejects_float_quantity(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":1.5}')\n\n    def test_rejects_zero_or_negative_quantity(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"a\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":0}')\n\n    def test_rejects_empty_id(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"\",\"op\":\"restock\",\"sku\":\"S\",\"qty\":1}')\n\n    def test_space_is_nonempty_id(self):\n        ev = codec.parse_event('{\"id\":\" \",\"op\":\"restock\",\"sku\":\"S\",\"qty\":1}')\n        self.assertEqual(ev['id'], ' ')\n\n    def test_rejects_reserve_bad_pair(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"r\",\"op\":\"reserve\",\"request\":\"q\",\"lines\":[[\"a\"]]}')\n\n    def test_rejects_reserve_non_list_lines(self):\n        with self.assertRaises(ValueError):\n            codec.parse_event('{\"id\":\"r\",\"op\":\"reserve\",\"request\":\"q\",\"lines\":\"x\"}')\n\n\nif __name__ == '__main__':\n    unittest.main()"
      }
    ],
    "is_error": false,
    "command": "create",
    "path": "/workspace/test_codec.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
  },
  "action_id": "5cf0e3ac-8b56-46cf-ae8f-6e074f78c7e0",
  "extended_content": [],
  "kind": "ObservationEvent"
}

{
  "id": "7372ecd8-821a-460d-b0e8-f72fedcaafdf",
  "timestamp": "2026-10-19T08:27:42.611620",
  "source": "agent",
  "parent_id": "35a58f1c-7dbe-42d0-9229-18292c9e6f40",
  "responses_reasoning_item": null,
  "action": {
    "command": "create",
    "path": "/workspace/test_reducer.py",
    "file_text": "import unittest\nfrom copy import deepcopy\nfrom codec import parse_event\nfrom reducer import empty_state, apply_event\n\n\ndef apply(state, line):\n    return apply_event(state, parse_event(line))\n\n\nclass ApplyEventTests(unittest.TestCase):\n    def setUp(self):\n        self.state = empty_state()\n        self.state = apply(self.state, '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}')\n        self.state = apply(self.state, '{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}')\n\n    def _check_detached(self, original, result):\n        # Mutating result must not affect original.\n        self.assertEqual(original, deepcopy(original))\n        result['stock']['NOPE'] = 999\n        self.assertNotIn('NOPE', original['stock'])\n\n    def test_restock_adds(self):\n        st = apply_event(self.state, parse_event(\n            '{\"id\":\"n1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":3}'))\n        self.assertEqual(st['stock']['A'], 13)\n        self.assertEqual(self.state['stock']['A'], 10)  # unchanged\n\n    def test_reserve_deducts(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",4],[\"B\",1]]}')\n        self.assertEqual(st['stock']['A'], 6)\n        self.assertEqual(st['stock']['B'], 1)\n        self.assertEqual(st['requests']['Q'], {'A': 4, 'B': 1})\n        # original unchanged\n        self.assertEqual(self.state['stock']['A'], 10)\n\n    def test_cancel_restores_and_removes(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        self.assertIn('Q', st['requests'])\n        st2 = apply(st, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        self.assertEqual(st2['stock']['A'], 10)\n        self.assertNotIn('Q', st2['requests'])\n\n    def test_request_reuse_after_cancel(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        st = apply(st, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        # Reuse request id with new event id\n        st = apply(st, '{\"id\":\"v2\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        self.assertEqual(st['requests']['Q'], {'A': 1})\n        self.assertEqual(st['stock']['A'], 9)\n\n    def test_seen_replay_equal_event_no_change(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        before = deepcopy(st)\n        replay = apply(st, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        # stock unchanged after replay, but state detached\n        self.assertEqual(replay['stock'], before['stock'])\n        self.assertEqual(replay['requests'], before['requests'])\n        self._check_detached(st, replay)\n\n    def test_conflicting_same_id_raises(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        before = deepcopy(st)\n        with self.assertRaises(ValueError):\n            apply(st, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",4]]}')\n        self.assertEqual(st, before)\n\n    def test_reserve_unknown_sku_rejected(self):\n        before = deepcopy(self.state)\n        with self.assertRaises(ValueError):\n            apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"ZZZ\",1]]}')\n        self.assertEqual(self.state, before)\n        self.assertNotIn('v1', self.state['seen'])\n\n    def test_reserve_insufficient_rejected(self):\n        before = deepcopy(self.state)\n        with self.assertRaises(ValueError):\n            apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"B\",5]]}')\n        self.assertEqual(self.state, before)\n        self.assertNotIn('v1', self.state['seen'])\n\n    def test_reserve_duplicate_request_rejected(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        before = deepcopy(st)\n        with self.assertRaises(ValueError):\n            apply(st, '{\"id\":\"v2\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        self.assertEqual(st, before)\n\n    def test_cancel_inactive_rejected(self):\n        before = deepcopy(self.state)\n        with self.assertRaises(ValueError):\n            apply(self.state, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        self.assertNotIn('c1', self.state['seen'])\n\n    def test_empty_reserve_creates_active_request(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[]}')\n        self.assertEqual(st['requests']['Q'], {})\n        st2 = apply(st, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        self.assertNotIn('Q', st2['requests'])\n\n    def test_seen_persists_after_cancel(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        st = apply(st, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        self.assertIn('v1', st['seen'])\n        self.assertIn('c1', st['seen'])\n\n    def test_returned_seen_event_detached(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        seen_ev = st['seen']['v1']\n        # mutate result's seen event, original state unaffected\n        seen_ev['lines'][0][1] = 999\n        self.assertEqual(self.state['seen'], {})\n        # new separate state from replay also detached\n        replay = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        self.assertEqual(replay['seen']['v1']['lines'][0][1], 1)\n\n\nif __name__ == '__main__':\n    unittest.main()",
    "old_str": null,
    "new_str": null,
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_3e2bc60cee644d1b92e50d79",
  "tool_call": {
    "id": "call_3e2bc60cee644d1b92e50d79",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"create\", \"path\": \"/workspace/test_reducer.py\", \"file_text\": \"import unittest\\nfrom copy import deepcopy\\nfrom codec import parse_event\\nfrom reducer import empty_state, apply_event\\n\\n\\ndef apply(state, line):\\n    return apply_event(state, parse_event(line))\\n\\n\\nclass ApplyEventTests(unittest.TestCase):\\n    def setUp(self):\\n        self.state = empty_state()\\n        self.state = apply(self.state, '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}')\\n        self.state = apply(self.state, '{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":2}')\\n\\n    def _check_detached(self, original, result):\\n        # Mutating result must not affect original.\\n        self.assertEqual(original, deepcopy(original))\\n        result['stock']['NOPE'] = 999\\n        self.assertNotIn('NOPE', original['stock'])\\n\\n    def test_restock_adds(self):\\n        st = apply_event(self.state, parse_event(\\n            '{\\\"id\\\":\\\"n1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":3}'))\\n        self.assertEqual(st['stock']['A'], 13)\\n        self.assertEqual(self.state['stock']['A'], 10)  # unchanged\\n\\n    def test_reserve_deducts(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",4],[\\\"B\\\",1]]}')\\n        self.assertEqual(st['stock']['A'], 6)\\n        self.assertEqual(st['stock']['B'], 1)\\n        self.assertEqual(st['requests']['Q'], {'A': 4, 'B': 1})\\n        # original unchanged\\n        self.assertEqual(self.state['stock']['A'], 10)\\n\\n    def test_cancel_restores_and_removes(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3]]}')\\n        self.assertIn('Q', st['requests'])\\n        st2 = apply(st, '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}')\\n        self.assertEqual(st2['stock']['A'], 10)\\n        self.assertNotIn('Q', st2['requests'])\\n\\n    def test_request_reuse_after_cancel(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3]]}')\\n        st = apply(st, '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}')\\n        # Reuse request id with new event id\\n        st = apply(st, '{\\\"id\\\":\\\"v2\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        self.assertEqual(st['requests']['Q'], {'A': 1})\\n        self.assertEqual(st['stock']['A'], 9)\\n\\n    def test_seen_replay_equal_event_no_change(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3]]}')\\n        before = deepcopy(st)\\n        replay = apply(st, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3]]}')\\n        # stock unchanged after replay, but state detached\\n        self.assertEqual(replay['stock'], before['stock'])\\n        self.assertEqual(replay['requests'], before['requests'])\\n        self._check_detached(st, replay)\\n\\n    def test_conflicting_same_id_raises(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3]]}')\\n        before = deepcopy(st)\\n        with self.assertRaises(ValueError):\\n            apply(st, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",4]]}')\\n        self.assertEqual(st, before)\\n\\n    def test_reserve_unknown_sku_rejected(self):\\n        before = deepcopy(self.state)\\n        with self.assertRaises(ValueError):\\n            apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"ZZZ\\\",1]]}')\\n        self.assertEqual(self.state, before)\\n        self.assertNotIn('v1', self.state['seen'])\\n\\n    def test_reserve_insufficient_rejected(self):\\n        before = deepcopy(self.state)\\n        with self.assertRaises(ValueError):\\n            apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"B\\\",5]]}')\\n        self.assertEqual(self.state, before)\\n        self.assertNotIn('v1', self.state['seen'])\\n\\n    def test_reserve_duplicate_request_rejected(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        before = deepcopy(st)\\n        with self.assertRaises(ValueError):\\n            apply(st, '{\\\"id\\\":\\\"v2\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        self.assertEqual(st, before)\\n\\n    def test_cancel_inactive_rejected(self):\\n        before = deepcopy(self.state)\\n        with self.assertRaises(ValueError):\\n            apply(self.state, '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}')\\n        self.assertNotIn('c1', self.state['seen'])\\n\\n    def test_empty_reserve_creates_active_request(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[]}')\\n        self.assertEqual(st['requests']['Q'], {})\\n        st2 = apply(st, '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}')\\n        self.assertNotIn('Q', st2['requests'])\\n\\n    def test_seen_persists_after_cancel(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        st = apply(st, '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}')\\n        self.assertIn('v1', st['seen'])\\n        self.assertIn('c1', st['seen'])\\n\\n    def test_returned_seen_event_detached(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        seen_ev = st['seen']['v1']\\n        # mutate result's seen event, original state unaffected\\n        seen_ev['lines'][0][1] = 999\\n        self.assertEqual(self.state['seen'], {})\\n        # new separate state from replay also detached\\n        replay = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        self.assertEqual(replay['seen']['v1']['lines'][0][1], 1)\\n\\n\\nif __name__ == '__main__':\\n    unittest.main()\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792416447-OqEl7L7DhpZ5r4Pneafg",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"create\", \"path\": \"/workspace/test_reducer.py\", \"file_text\": \"import unittest\\nfrom copy import deepcopy\\nfrom codec import parse_event\\nfrom reducer import empty_state, apply_event\\n\\n\\ndef apply(state, line):\\n    return apply_event(state, parse_event(line))\\n\\n\\nclass ApplyEventTests(unittest.TestCase):\\n    def setUp(self):\\n        self.state = empty_state()\\n        self.state = apply(self.state, '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}')\\n        self.state = apply(self.state, '{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":2}')\\n\\n    def _check_detached(self, original, result):\\n        # Mutating result must not affect original.\\n        self.assertEqual(original, deepcopy(original))\\n        result['stock']['NOPE'] = 999\\n        self.assertNotIn('NOPE', original['stock'])\\n\\n    def test_restock_adds(self):\\n        st = apply_event(self.state, parse_event(\\n            '{\\\"id\\\":\\\"n1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":3}'))\\n        self.assertEqual(st['stock']['A'], 13)\\n        self.assertEqual(self.state['stock']['A'], 10)  # unchanged\\n\\n    def test_reserve_deducts(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",4],[\\\"B\\\",1]]}')\\n        self.assertEqual(st['stock']['A'], 6)\\n        self.assertEqual(st['stock']['B'], 1)\\n        self.assertEqual(st['requests']['Q'], {'A': 4, 'B': 1})\\n        # original unchanged\\n        self.assertEqual(self.state['stock']['A'], 10)\\n\\n    def test_cancel_restores_and_removes(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3]]}')\\n        self.assertIn('Q', st['requests'])\\n        st2 = apply(st, '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}')\\n        self.assertEqual(st2['stock']['A'], 10)\\n        self.assertNotIn('Q', st2['requests'])\\n\\n    def test_request_reuse_after_cancel(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3]]}')\\n        st = apply(st, '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}')\\n        # Reuse request id with new event id\\n        st = apply(st, '{\\\"id\\\":\\\"v2\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        self.assertEqual(st['requests']['Q'], {'A': 1})\\n        self.assertEqual(st['stock']['A'], 9)\\n\\n    def test_seen_replay_equal_event_no_change(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3]]}')\\n        before = deepcopy(st)\\n        replay = apply(st, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3]]}')\\n        # stock unchanged after replay, but state detached\\n        self.assertEqual(replay['stock'], before['stock'])\\n        self.assertEqual(replay['requests'], before['requests'])\\n        self._check_detached(st, replay)\\n\\n    def test_conflicting_same_id_raises(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3]]}')\\n        before = deepcopy(st)\\n        with self.assertRaises(ValueError):\\n            apply(st, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",4]]}')\\n        self.assertEqual(st, before)\\n\\n    def test_reserve_unknown_sku_rejected(self):\\n        before = deepcopy(self.state)\\n        with self.assertRaises(ValueError):\\n            apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"ZZZ\\\",1]]}')\\n        self.assertEqual(self.state, before)\\n        self.assertNotIn('v1', self.state['seen'])\\n\\n    def test_reserve_insufficient_rejected(self):\\n        before = deepcopy(self.state)\\n        with self.assertRaises(ValueError):\\n            apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"B\\\",5]]}')\\n        self.assertEqual(self.state, before)\\n        self.assertNotIn('v1', self.state['seen'])\\n\\n    def test_reserve_duplicate_request_rejected(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        before = deepcopy(st)\\n        with self.assertRaises(ValueError):\\n            apply(st, '{\\\"id\\\":\\\"v2\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        self.assertEqual(st, before)\\n\\n    def test_cancel_inactive_rejected(self):\\n        before = deepcopy(self.state)\\n        with self.assertRaises(ValueError):\\n            apply(self.state, '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}')\\n        self.assertNotIn('c1', self.state['seen'])\\n\\n    def test_empty_reserve_creates_active_request(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[]}')\\n        self.assertEqual(st['requests']['Q'], {})\\n        st2 = apply(st, '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}')\\n        self.assertNotIn('Q', st2['requests'])\\n\\n    def test_seen_persists_after_cancel(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        st = apply(st, '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}')\\n        self.assertIn('v1', st['seen'])\\n        self.assertIn('c1', st['seen'])\\n\\n    def test_returned_seen_event_detached(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        seen_ev = st['seen']['v1']\\n        # mutate result's seen event, original state unaffected\\n        seen_ev['lines'][0][1] = 999\\n        self.assertEqual(self.state['seen'], {})\\n        # new separate state from replay also detached\\n        replay = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        self.assertEqual(replay['seen']['v1']['lines'][0][1], 1)\\n\\n\\nif __name__ == '__main__':\\n    unittest.main()\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "6e6c6701-44df-4276-8806-35eacdb20feb",
  "timestamp": "2026-10-19T08:27:42.755296",
  "source": "environment",
  "parent_id": "7372ecd8-821a-460d-b0e8-f72fedcaafdf",
  "tool_name": "file_editor",
  "tool_call_id": "call_3e2bc60cee644d1b92e50d79",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_reducer.py\nimport unittest\nfrom copy import deepcopy\nfrom codec import parse_event\nfrom reducer import empty_state, apply_event\n\n\ndef apply(state, line):\n    return apply_event(state, parse_event(line))\n\n\nclass ApplyEventTests(unittest.TestCase):\n    def setUp(self):\n        self.state = empty_state()\n        self.state = apply(self.state, '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}')\n        self.state = apply(self.state, '{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}')\n\n    def _check_detached(self, original, result):\n        # Mutating result must not affect original.\n        self.assertEqual(original, deepcopy(original))\n        result['stock']['NOPE'] = 999\n        self.assertNotIn('NOPE', original['stock'])\n\n    def test_restock_adds(self):\n        st = apply_event(self.state, parse_event(\n            '{\"id\":\"n1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":3}'))\n        self.assertEqual(st['stock']['A'], 13)\n        self.assertEqual(self.state['stock']['A'], 10)  # unchanged\n\n    def test_reserve_deducts(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",4],[\"B\",1]]}')\n        self.assertEqual(st['stock']['A'], 6)\n        self.assertEqual(st['stock']['B'], 1)\n        self.assertEqual(st['requests']['Q'], {'A': 4, 'B': 1})\n        # original unchanged\n        self.assertEqual(self.state['stock']['A'], 10)\n\n    def test_cancel_restores_and_removes(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        self.assertIn('Q', st['requests'])\n        st2 = apply(st, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        self.assertEqual(st2['stock']['A'], 10)\n        self.assertNotIn('Q', st2['requests'])\n\n    def test_request_reuse_after_cancel(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        st = apply(st, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        # Reuse request id with new event id\n        st = apply(st, '{\"id\":\"v2\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        self.assertEqual(st['requests']['Q'], {'A': 1})\n        self.assertEqual(st['stock']['A'], 9)\n\n    def test_seen_replay_equal_event_no_change(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        before = deepcopy(st)\n        replay = apply(st, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        # stock unchanged after replay, but state detached\n        self.assertEqual(replay['stock'], before['stock'])\n        self.assertEqual(replay['requests'], before['requests'])\n        self._check_detached(st, replay)\n\n    def test_conflicting_same_id_raises(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        before = deepcopy(st)\n        with self.assertRaises(ValueError):\n            apply(st, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",4]]}')\n        self.assertEqual(st, before)\n\n    def test_reserve_unknown_sku_rejected(self):\n        before = deepcopy(self.state)\n        with self.assertRaises(ValueError):\n            apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"ZZZ\",1]]}')\n        self.assertEqual(self.state, before)\n        self.assertNotIn('v1', self.state['seen'])\n\n    def test_reserve_insufficient_rejected(self):\n        before = deepcopy(self.state)\n        with self.assertRaises(ValueError):\n            apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"B\",5]]}')\n        self.assertEqual(self.state, before)\n        self.assertNotIn('v1', self.state['seen'])\n\n    def test_reserve_duplicate_request_rejected(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        before = deepcopy(st)\n        with self.assertRaises(ValueError):\n            apply(st, '{\"id\":\"v2\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        self.assertEqual(st, before)\n\n    def test_cancel_inactive_rejected(self):\n        before = deepcopy(self.state)\n        with self.assertRaises(ValueError):\n            apply(self.state, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        self.assertNotIn('c1', self.state['seen'])\n\n    def test_empty_reserve_creates_active_request(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[]}')\n        self.assertEqual(st['requests']['Q'], {})\n        st2 = apply(st, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        self.assertNotIn('Q', st2['requests'])\n\n    def test_seen_persists_after_cancel(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        st = apply(st, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        self.assertIn('v1', st['seen'])\n        self.assertIn('c1', st['seen'])\n\n    def test_returned_seen_event_detached(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        seen_ev = st['seen']['v1']\n        # mutate result's seen event, original state unaffected\n        seen_ev['lines'][0][1] = 999\n        self.assertEqual(self.state['seen'], {})\n        # new separate state from replay also detached\n        replay = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        self.assertEqual(replay['seen']['v1']['lines'][0][1], 1)\n\n\nif __name__ == '__main__':\n    unittest.main()"
      }
    ],
    "is_error": false,
    "command": "create",
    "path": "/workspace/test_reducer.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
  },
  "action_id": "7372ecd8-821a-460d-b0e8-f72fedcaafdf",
  "extended_content": [],
  "kind": "ObservationEvent"
}

{
  "id": "3404cc09-831d-4328-82a6-a27c9f0807b8",
  "timestamp": "2026-10-19T08:27:54.165470",
  "source": "agent",
  "parent_id": "6e6c6701-44df-4276-8806-35eacdb20feb",
  "responses_reasoning_item": null,
  "action": {
    "command": "create",
    "path": "/workspace/test_checkpoint.py",
    "file_text": "import unittest\nfrom copy import deepcopy\nfrom codec import parse_event\nfrom reducer import empty_state, apply_event\nfrom checkpoint import dump_state, load_state\n\n\ndef build_state():\n    st = empty_state()\n    st = apply_event(st, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":5}'))\n    st = apply_event(st, parse_event('{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",2]]}'))\n    st = apply_event(st, parse_event('{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}'))\n    return st\n\n\nclass CheckpointTests(unittest.TestCase):\n    def test_roundtrip_preserves_state(self):\n        st = build_state()\n        text = dump_state(st)\n        loaded = load_state(text)\n        self.assertEqual(loaded, st)\n        self.assertEqual(list(loaded), ['stock', 'requests', 'seen'])\n\n    def test_dump_has_exact_format(self):\n        st = empty_state()\n        text = dump_state(st)\n        self.assertTrue(text.endswith('\\n'))\n        self.assertEqual(text.count('\\n'), 1)\n        # sort_keys => keys sorted\n        self.assertIn('\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}', text)\n        self.assertTrue(text.startswith('{\"version\":1,'))\n        self.assertNotIn(' ', text[:-1])  # no spaces from separators\n\n    def test_load_accepts_surrounding_whitespace(self):\n        st = build_state()\n        text = dump_state(st)\n        loaded = load_state('  \\n' + text + ' \\n ')\n        self.assertEqual(loaded, st)\n\n    def test_equal_states_different_insertion_order_same_text(self):\n        st1 = empty_state()\n        st1 = apply_event(st1, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":1}'))\n        st1 = apply_event(st1, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}'))\n        # Build equivalent state with different stock insertion order\n        st2 = empty_state()\n        st2 = apply_event(st2, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}'))\n        st2 = apply_event(st2, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":1}'))\n        self.assertEqual(st1, st2)\n        self.assertEqual(dump_state(st1), dump_state(st2))\n\n    def test_reject_boolean_quantity_in_stock(self):\n        st = empty_state()\n        st['stock']['A'] = True\n        with self.assertRaises(ValueError):\n            dump_state(st)\n\n    def test_reject_float_quantity_in_requests(self):\n        st = empty_state()\n        st['requests']['Q'] = {'A': 1.0}\n        with self.assertRaises(ValueError):\n            dump_state(st)\n\n    def test_reject_bad_version(self):\n        st = empty_state()\n        text = dump_state(st)\n        wrapped = text.replace('\"version\":1', '\"version\":true')\n        with self.assertRaises(ValueError):\n            load_state(wrapped)\n\n    def test_reject_extra_wrapper_key(self):\n        st = empty_state()\n        text = dump_state(st).rstrip('\\n')\n        wrapped = text[:-1] + ',\"extra\":1}'\n        with self.assertRaises(ValueError):\n            load_state(wrapped)\n\n    def test_reject_duplicate_keys_in_state(self):\n        st = empty_state()\n        text = dump_state(st).rstrip('\\n')\n        # craft duplicate stock key\n        bad = '{\"version\":1,\"state\":{\"stock\":{\"A\":1,\"A\":2},\"requests\":{},\"seen\":{}}}'\n        with self.assertRaises(ValueError):\n            load_state(bad)\n\n    def test_rejects_reordered_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1],[\"B\",2]]}'))\n        # tamper seen to reorder lines\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_rejects_unaggregated_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}'))\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_load_does_not_mutate_input(self):\n        st = build_state()\n        text = dump_state(st)\n        before = text\n        load_state(text)\n        self.assertEqual(text, before)\n\n    def test_load_result_detached(self):\n        st = build_state()\n        loaded = load_state(dump_state(st))\n        loaded['stock']['NEW'] = 1\n        self.assertNotIn('NEW', st['stock'])\n\n\nif __name__ == '__main__':\n    unittest.main()",
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    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_4271ea701d9445629e3cb001",
  "tool_call": {
    "id": "call_4271ea701d9445629e3cb001",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"create\", \"path\": \"/workspace/test_checkpoint.py\", \"file_text\": \"import unittest\\nfrom copy import deepcopy\\nfrom codec import parse_event\\nfrom reducer import empty_state, apply_event\\nfrom checkpoint import dump_state, load_state\\n\\n\\ndef build_state():\\n    st = empty_state()\\n    st = apply_event(st, parse_event('{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":5}'))\\n    st = apply_event(st, parse_event('{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",2]]}'))\\n    st = apply_event(st, parse_event('{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}'))\\n    return st\\n\\n\\nclass CheckpointTests(unittest.TestCase):\\n    def test_roundtrip_preserves_state(self):\\n        st = build_state()\\n        text = dump_state(st)\\n        loaded = load_state(text)\\n        self.assertEqual(loaded, st)\\n        self.assertEqual(list(loaded), ['stock', 'requests', 'seen'])\\n\\n    def test_dump_has_exact_format(self):\\n        st = empty_state()\\n        text = dump_state(st)\\n        self.assertTrue(text.endswith('\\\\n'))\\n        self.assertEqual(text.count('\\\\n'), 1)\\n        # sort_keys => keys sorted\\n        self.assertIn('\\\"state\\\":{\\\"requests\\\":{},\\\"seen\\\":{},\\\"stock\\\":{}}', text)\\n        self.assertTrue(text.startswith('{\\\"version\\\":1,'))\\n        self.assertNotIn(' ', text[:-1])  # no spaces from separators\\n\\n    def test_load_accepts_surrounding_whitespace(self):\\n        st = build_state()\\n        text = dump_state(st)\\n        loaded = load_state('  \\\\n' + text + ' \\\\n ')\\n        self.assertEqual(loaded, st)\\n\\n    def test_equal_states_different_insertion_order_same_text(self):\\n        st1 = empty_state()\\n        st1 = apply_event(st1, parse_event('{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":1}'))\\n        st1 = apply_event(st1, parse_event('{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":2}'))\\n        # Build equivalent state with different stock insertion order\\n        st2 = empty_state()\\n        st2 = apply_event(st2, parse_event('{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":2}'))\\n        st2 = apply_event(st2, parse_event('{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":1}'))\\n        self.assertEqual(st1, st2)\\n        self.assertEqual(dump_state(st1), dump_state(st2))\\n\\n    def test_reject_boolean_quantity_in_stock(self):\\n        st = empty_state()\\n        st['stock']['A'] = True\\n        with self.assertRaises(ValueError):\\n            dump_state(st)\\n\\n    def test_reject_float_quantity_in_requests(self):\\n        st = empty_state()\\n        st['requests']['Q'] = {'A': 1.0}\\n        with self.assertRaises(ValueError):\\n            dump_state(st)\\n\\n    def test_reject_bad_version(self):\\n        st = empty_state()\\n        text = dump_state(st)\\n        wrapped = text.replace('\\\"version\\\":1', '\\\"version\\\":true')\\n        with self.assertRaises(ValueError):\\n            load_state(wrapped)\\n\\n    def test_reject_extra_wrapper_key(self):\\n        st = empty_state()\\n        text = dump_state(st).rstrip('\\\\n')\\n        wrapped = text[:-1] + ',\\\"extra\\\":1}'\\n        with self.assertRaises(ValueError):\\n            load_state(wrapped)\\n\\n    def test_reject_duplicate_keys_in_state(self):\\n        st = empty_state()\\n        text = dump_state(st).rstrip('\\\\n')\\n        # craft duplicate stock key\\n        bad = '{\\\"version\\\":1,\\\"state\\\":{\\\"stock\\\":{\\\"A\\\":1,\\\"A\\\":2},\\\"requests\\\":{},\\\"seen\\\":{}}}'\\n        with self.assertRaises(ValueError):\\n            load_state(bad)\\n\\n    def test_rejects_reordered_reserve_seen(self):\\n        st = empty_state()\\n        st = apply_event(st, parse_event(\\n            '{\\\"id\\\":\\\"v\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1],[\\\"B\\\",2]]}'))\\n        # tamper seen to reorder lines\\n        st2 = deepcopy(st)\\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\\n        with self.assertRaises(ValueError):\\n            dump_state(st2)\\n\\n    def test_rejects_unaggregated_reserve_seen(self):\\n        st = empty_state()\\n        st = apply_event(st, parse_event(\\n            '{\\\"id\\\":\\\"v\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}'))\\n        st2 = deepcopy(st)\\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\\n        with self.assertRaises(ValueError):\\n            dump_state(st2)\\n\\n    def test_load_does_not_mutate_input(self):\\n        st = build_state()\\n        text = dump_state(st)\\n        before = text\\n        load_state(text)\\n        self.assertEqual(text, before)\\n\\n    def test_load_result_detached(self):\\n        st = build_state()\\n        loaded = load_state(dump_state(st))\\n        loaded['stock']['NEW'] = 1\\n        self.assertNotIn('NEW', st['stock'])\\n\\n\\nif __name__ == '__main__':\\n    unittest.main()\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792416463-FJoQQxxouclOO8KL3sf8",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"create\", \"path\": \"/workspace/test_checkpoint.py\", \"file_text\": \"import unittest\\nfrom copy import deepcopy\\nfrom codec import parse_event\\nfrom reducer import empty_state, apply_event\\nfrom checkpoint import dump_state, load_state\\n\\n\\ndef build_state():\\n    st = empty_state()\\n    st = apply_event(st, parse_event('{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":5}'))\\n    st = apply_event(st, parse_event('{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",2]]}'))\\n    st = apply_event(st, parse_event('{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}'))\\n    return st\\n\\n\\nclass CheckpointTests(unittest.TestCase):\\n    def test_roundtrip_preserves_state(self):\\n        st = build_state()\\n        text = dump_state(st)\\n        loaded = load_state(text)\\n        self.assertEqual(loaded, st)\\n        self.assertEqual(list(loaded), ['stock', 'requests', 'seen'])\\n\\n    def test_dump_has_exact_format(self):\\n        st = empty_state()\\n        text = dump_state(st)\\n        self.assertTrue(text.endswith('\\\\n'))\\n        self.assertEqual(text.count('\\\\n'), 1)\\n        # sort_keys => keys sorted\\n        self.assertIn('\\\"state\\\":{\\\"requests\\\":{},\\\"seen\\\":{},\\\"stock\\\":{}}', text)\\n        self.assertTrue(text.startswith('{\\\"version\\\":1,'))\\n        self.assertNotIn(' ', text[:-1])  # no spaces from separators\\n\\n    def test_load_accepts_surrounding_whitespace(self):\\n        st = build_state()\\n        text = dump_state(st)\\n        loaded = load_state('  \\\\n' + text + ' \\\\n ')\\n        self.assertEqual(loaded, st)\\n\\n    def test_equal_states_different_insertion_order_same_text(self):\\n        st1 = empty_state()\\n        st1 = apply_event(st1, parse_event('{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":1}'))\\n        st1 = apply_event(st1, parse_event('{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":2}'))\\n        # Build equivalent state with different stock insertion order\\n        st2 = empty_state()\\n        st2 = apply_event(st2, parse_event('{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":2}'))\\n        st2 = apply_event(st2, parse_event('{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":1}'))\\n        self.assertEqual(st1, st2)\\n        self.assertEqual(dump_state(st1), dump_state(st2))\\n\\n    def test_reject_boolean_quantity_in_stock(self):\\n        st = empty_state()\\n        st['stock']['A'] = True\\n        with self.assertRaises(ValueError):\\n            dump_state(st)\\n\\n    def test_reject_float_quantity_in_requests(self):\\n        st = empty_state()\\n        st['requests']['Q'] = {'A': 1.0}\\n        with self.assertRaises(ValueError):\\n            dump_state(st)\\n\\n    def test_reject_bad_version(self):\\n        st = empty_state()\\n        text = dump_state(st)\\n        wrapped = text.replace('\\\"version\\\":1', '\\\"version\\\":true')\\n        with self.assertRaises(ValueError):\\n            load_state(wrapped)\\n\\n    def test_reject_extra_wrapper_key(self):\\n        st = empty_state()\\n        text = dump_state(st).rstrip('\\\\n')\\n        wrapped = text[:-1] + ',\\\"extra\\\":1}'\\n        with self.assertRaises(ValueError):\\n            load_state(wrapped)\\n\\n    def test_reject_duplicate_keys_in_state(self):\\n        st = empty_state()\\n        text = dump_state(st).rstrip('\\\\n')\\n        # craft duplicate stock key\\n        bad = '{\\\"version\\\":1,\\\"state\\\":{\\\"stock\\\":{\\\"A\\\":1,\\\"A\\\":2},\\\"requests\\\":{},\\\"seen\\\":{}}}'\\n        with self.assertRaises(ValueError):\\n            load_state(bad)\\n\\n    def test_rejects_reordered_reserve_seen(self):\\n        st = empty_state()\\n        st = apply_event(st, parse_event(\\n            '{\\\"id\\\":\\\"v\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1],[\\\"B\\\",2]]}'))\\n        # tamper seen to reorder lines\\n        st2 = deepcopy(st)\\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\\n        with self.assertRaises(ValueError):\\n            dump_state(st2)\\n\\n    def test_rejects_unaggregated_reserve_seen(self):\\n        st = empty_state()\\n        st = apply_event(st, parse_event(\\n            '{\\\"id\\\":\\\"v\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}'))\\n        st2 = deepcopy(st)\\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\\n        with self.assertRaises(ValueError):\\n            dump_state(st2)\\n\\n    def test_load_does_not_mutate_input(self):\\n        st = build_state()\\n        text = dump_state(st)\\n        before = text\\n        load_state(text)\\n        self.assertEqual(text, before)\\n\\n    def test_load_result_detached(self):\\n        st = build_state()\\n        loaded = load_state(dump_state(st))\\n        loaded['stock']['NEW'] = 1\\n        self.assertNotIn('NEW', st['stock'])\\n\\n\\nif __name__ == '__main__':\\n    unittest.main()\"}",
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{
  "id": "07134da3-7077-4d07-9b34-acee3715e5d9",
  "timestamp": "2026-10-19T08:27:54.296971",
  "source": "environment",
  "parent_id": "3404cc09-831d-4328-82a6-a27c9f0807b8",
  "tool_name": "file_editor",
  "tool_call_id": "call_4271ea701d9445629e3cb001",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_checkpoint.py\nimport unittest\nfrom copy import deepcopy\nfrom codec import parse_event\nfrom reducer import empty_state, apply_event\nfrom checkpoint import dump_state, load_state\n\n\ndef build_state():\n    st = empty_state()\n    st = apply_event(st, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":5}'))\n    st = apply_event(st, parse_event('{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",2]]}'))\n    st = apply_event(st, parse_event('{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}'))\n    return st\n\n\nclass CheckpointTests(unittest.TestCase):\n    def test_roundtrip_preserves_state(self):\n        st = build_state()\n        text = dump_state(st)\n        loaded = load_state(text)\n        self.assertEqual(loaded, st)\n        self.assertEqual(list(loaded), ['stock', 'requests', 'seen'])\n\n    def test_dump_has_exact_format(self):\n        st = empty_state()\n        text = dump_state(st)\n        self.assertTrue(text.endswith('\\n'))\n        self.assertEqual(text.count('\\n'), 1)\n        # sort_keys => keys sorted\n        self.assertIn('\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}', text)\n        self.assertTrue(text.startswith('{\"version\":1,'))\n        self.assertNotIn(' ', text[:-1])  # no spaces from separators\n\n    def test_load_accepts_surrounding_whitespace(self):\n        st = build_state()\n        text = dump_state(st)\n        loaded = load_state('  \\n' + text + ' \\n ')\n        self.assertEqual(loaded, st)\n\n    def test_equal_states_different_insertion_order_same_text(self):\n        st1 = empty_state()\n        st1 = apply_event(st1, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":1}'))\n        st1 = apply_event(st1, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}'))\n        # Build equivalent state with different stock insertion order\n        st2 = empty_state()\n        st2 = apply_event(st2, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}'))\n        st2 = apply_event(st2, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":1}'))\n        self.assertEqual(st1, st2)\n        self.assertEqual(dump_state(st1), dump_state(st2))\n\n    def test_reject_boolean_quantity_in_stock(self):\n        st = empty_state()\n        st['stock']['A'] = True\n        with self.assertRaises(ValueError):\n            dump_state(st)\n\n    def test_reject_float_quantity_in_requests(self):\n        st = empty_state()\n        st['requests']['Q'] = {'A': 1.0}\n        with self.assertRaises(ValueError):\n            dump_state(st)\n\n    def test_reject_bad_version(self):\n        st = empty_state()\n        text = dump_state(st)\n        wrapped = text.replace('\"version\":1', '\"version\":true')\n        with self.assertRaises(ValueError):\n            load_state(wrapped)\n\n    def test_reject_extra_wrapper_key(self):\n        st = empty_state()\n        text = dump_state(st).rstrip('\\n')\n        wrapped = text[:-1] + ',\"extra\":1}'\n        with self.assertRaises(ValueError):\n            load_state(wrapped)\n\n    def test_reject_duplicate_keys_in_state(self):\n        st = empty_state()\n        text = dump_state(st).rstrip('\\n')\n        # craft duplicate stock key\n        bad = '{\"version\":1,\"state\":{\"stock\":{\"A\":1,\"A\":2},\"requests\":{},\"seen\":{}}}'\n        with self.assertRaises(ValueError):\n            load_state(bad)\n\n    def test_rejects_reordered_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1],[\"B\",2]]}'))\n        # tamper seen to reorder lines\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_rejects_unaggregated_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}'))\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_load_does_not_mutate_input(self):\n        st = build_state()\n        text = dump_state(st)\n        before = text\n        load_state(text)\n        self.assertEqual(text, before)\n\n    def test_load_result_detached(self):\n        st = build_state()\n        loaded = load_state(dump_state(st))\n        loaded['stock']['NEW'] = 1\n        self.assertNotIn('NEW', st['stock'])\n\n\nif __name__ == '__main__':\n    unittest.main()"
      }
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    "is_error": false,
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    "old_content": null,
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    "kind": "FileEditorObservation"
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  "kind": "ObservationEvent"
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{
  "id": "6d84a143-a0fe-4a28-a892-930130042a1a",
  "timestamp": "2026-10-19T08:28:07.352426",
  "source": "agent",
  "parent_id": "07134da3-7077-4d07-9b34-acee3715e5d9",
  "responses_reasoning_item": null,
  "action": {
    "command": "create",
    "path": "/workspace/test_importer.py",
    "file_text": "import unittest\nfrom copy import deepcopy\nfrom pipeline import import_batch, resume\nfrom reducer import empty_state\nfrom checkpoint import dump_state\nfrom codec import parse_event\n\n\nclass ImporterIntegrationTests(unittest.TestCase):\n    def setUp(self):\n        self.st = empty_state()\n\n    def test_end_to_end_workflow(self):\n        lines = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}',\n            '{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":5}',\n            '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3],[\"B\",2]]}',\n            '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}',\n        ]\n        st = import_batch(self.st, iter(lines))\n        self.assertEqual(st['stock']['A'], 10)\n        self.assertEqual(st['stock']['B'], 5)\n        self.assertNotIn('Q', st['requests'])\n        self.assertEqual(set(st['seen']), {'r1', 'r2', 'v1', 'c1'})\n        # input state unchanged\n        self.assertEqual(self.st['stock'], {})\n\n    def test_empty_batch_detached_equal(self):\n        st = import_batch(self.st, [])\n        self.assertEqual(st, empty_state())\n        st['stock']['X'] = 1\n        self.assertNotIn('X', self.st['stock'])\n\n    def test_failed_batch_leaves_state_unchanged(self):\n        lines = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}',\n            '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",2]]}',\n            '{\"id\":\"v2\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",9]]}',  # fails\n        ]\n        before = deepcopy(self.st)\n        with self.assertRaises(ValueError):\n            import_batch(self.st, iter(lines))\n        self.assertEqual(self.st, before)\n        self.assertEqual(self.st['seen'], {})\n\n    def test_failed_parse_leaves_state_unchanged(self):\n        lines = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}',\n            '{not json',\n        ]\n        before = deepcopy(self.st)\n        with self.assertRaises(ValueError):\n            import_batch(self.st, iter(lines))\n        self.assertEqual(self.st, before)\n\n    def test_restart_equivalence(self):\n        all_lines = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}',\n            '{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":5}',\n            '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3],[\"B\",2]]}',\n            '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}',\n            '{\"id\":\"v2\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",4]]}',\n        ]\n        uninterrupted = import_batch(self.st, all_lines)\n        final_checkpoint = dump_state(uninterrupted)\n\n        # Stop after event 2, checkpoint, restart, finish remaining.\n        half = import_batch(self.st, all_lines[:2])\n        cp = dump_state(half)\n        restarted = resume(cp, all_lines[2:])\n        self.assertEqual(restarted, final_checkpoint)\n\n        # Byte-identical final checkpoint text.\n        loaded = resume(cp, all_lines[2:])\n        self.assertEqual(loaded, final_checkpoint)\n\n    def test_replay_after_restart(self):\n        # Workflow replays old events after restart (event ids reused).\n        all_lines = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}',\n            '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",2]]}',\n            '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}',\n        ]\n        full = import_batch(self.st, all_lines)\n        # replay of old events after restart must produce same state\n        replayed = import_batch(deepcopy(full), all_lines)\n        self.assertEqual(replayed, full)\n\n    def test_reordered_split_lines_replay_exact(self):\n        # Split reserve lines canonicalize identically to combined.\n        first = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":20}',\n            '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",2],[\"A\",3]]}',\n        ]\n        second = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":20}',\n            '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3],[\"A\",2]]}',\n        ]\n        st1 = import_batch(self.st, first)\n        st2 = import_batch(self.st, second)\n        self.assertEqual(st1, st2)\n        self.assertEqual(st1['requests']['Q'], {'A': 5})\n\n\nif __name__ == '__main__':\n    unittest.main()",
    "old_str": null,
    "new_str": null,
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_e7983f922f8343a782d04ef3",
  "tool_call": {
    "id": "call_e7983f922f8343a782d04ef3",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"create\", \"path\": \"/workspace/test_importer.py\", \"file_text\": \"import unittest\\nfrom copy import deepcopy\\nfrom pipeline import import_batch, resume\\nfrom reducer import empty_state\\nfrom checkpoint import dump_state\\nfrom codec import parse_event\\n\\n\\nclass ImporterIntegrationTests(unittest.TestCase):\\n    def setUp(self):\\n        self.st = empty_state()\\n\\n    def test_end_to_end_workflow(self):\\n        lines = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}',\\n            '{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":5}',\\n            '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3],[\\\"B\\\",2]]}',\\n            '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}',\\n        ]\\n        st = import_batch(self.st, iter(lines))\\n        self.assertEqual(st['stock']['A'], 10)\\n        self.assertEqual(st['stock']['B'], 5)\\n        self.assertNotIn('Q', st['requests'])\\n        self.assertEqual(set(st['seen']), {'r1', 'r2', 'v1', 'c1'})\\n        # input state unchanged\\n        self.assertEqual(self.st['stock'], {})\\n\\n    def test_empty_batch_detached_equal(self):\\n        st = import_batch(self.st, [])\\n        self.assertEqual(st, empty_state())\\n        st['stock']['X'] = 1\\n        self.assertNotIn('X', self.st['stock'])\\n\\n    def test_failed_batch_leaves_state_unchanged(self):\\n        lines = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}',\\n            '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",2]]}',\\n            '{\\\"id\\\":\\\"v2\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",9]]}',  # fails\\n        ]\\n        before = deepcopy(self.st)\\n        with self.assertRaises(ValueError):\\n            import_batch(self.st, iter(lines))\\n        self.assertEqual(self.st, before)\\n        self.assertEqual(self.st['seen'], {})\\n\\n    def test_failed_parse_leaves_state_unchanged(self):\\n        lines = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}',\\n            '{not json',\\n        ]\\n        before = deepcopy(self.st)\\n        with self.assertRaises(ValueError):\\n            import_batch(self.st, iter(lines))\\n        self.assertEqual(self.st, before)\\n\\n    def test_restart_equivalence(self):\\n        all_lines = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}',\\n            '{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":5}',\\n            '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3],[\\\"B\\\",2]]}',\\n            '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}',\\n            '{\\\"id\\\":\\\"v2\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",4]]}',\\n        ]\\n        uninterrupted = import_batch(self.st, all_lines)\\n        final_checkpoint = dump_state(uninterrupted)\\n\\n        # Stop after event 2, checkpoint, restart, finish remaining.\\n        half = import_batch(self.st, all_lines[:2])\\n        cp = dump_state(half)\\n        restarted = resume(cp, all_lines[2:])\\n        self.assertEqual(restarted, final_checkpoint)\\n\\n        # Byte-identical final checkpoint text.\\n        loaded = resume(cp, all_lines[2:])\\n        self.assertEqual(loaded, final_checkpoint)\\n\\n    def test_replay_after_restart(self):\\n        # Workflow replays old events after restart (event ids reused).\\n        all_lines = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}',\\n            '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",2]]}',\\n            '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}',\\n        ]\\n        full = import_batch(self.st, all_lines)\\n        # replay of old events after restart must produce same state\\n        replayed = import_batch(deepcopy(full), all_lines)\\n        self.assertEqual(replayed, full)\\n\\n    def test_reordered_split_lines_replay_exact(self):\\n        # Split reserve lines canonicalize identically to combined.\\n        first = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":20}',\\n            '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",2],[\\\"A\\\",3]]}',\\n        ]\\n        second = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":20}',\\n            '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3],[\\\"A\\\",2]]}',\\n        ]\\n        st1 = import_batch(self.st, first)\\n        st2 = import_batch(self.st, second)\\n        self.assertEqual(st1, st2)\\n        self.assertEqual(st1['requests']['Q'], {'A': 5})\\n\\n\\nif __name__ == '__main__':\\n    unittest.main()\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792416474-WiFh1KLCcBrrMT3Cl730",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"create\", \"path\": \"/workspace/test_importer.py\", \"file_text\": \"import unittest\\nfrom copy import deepcopy\\nfrom pipeline import import_batch, resume\\nfrom reducer import empty_state\\nfrom checkpoint import dump_state\\nfrom codec import parse_event\\n\\n\\nclass ImporterIntegrationTests(unittest.TestCase):\\n    def setUp(self):\\n        self.st = empty_state()\\n\\n    def test_end_to_end_workflow(self):\\n        lines = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}',\\n            '{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":5}',\\n            '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3],[\\\"B\\\",2]]}',\\n            '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}',\\n        ]\\n        st = import_batch(self.st, iter(lines))\\n        self.assertEqual(st['stock']['A'], 10)\\n        self.assertEqual(st['stock']['B'], 5)\\n        self.assertNotIn('Q', st['requests'])\\n        self.assertEqual(set(st['seen']), {'r1', 'r2', 'v1', 'c1'})\\n        # input state unchanged\\n        self.assertEqual(self.st['stock'], {})\\n\\n    def test_empty_batch_detached_equal(self):\\n        st = import_batch(self.st, [])\\n        self.assertEqual(st, empty_state())\\n        st['stock']['X'] = 1\\n        self.assertNotIn('X', self.st['stock'])\\n\\n    def test_failed_batch_leaves_state_unchanged(self):\\n        lines = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}',\\n            '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",2]]}',\\n            '{\\\"id\\\":\\\"v2\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",9]]}',  # fails\\n        ]\\n        before = deepcopy(self.st)\\n        with self.assertRaises(ValueError):\\n            import_batch(self.st, iter(lines))\\n        self.assertEqual(self.st, before)\\n        self.assertEqual(self.st['seen'], {})\\n\\n    def test_failed_parse_leaves_state_unchanged(self):\\n        lines = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}',\\n            '{not json',\\n        ]\\n        before = deepcopy(self.st)\\n        with self.assertRaises(ValueError):\\n            import_batch(self.st, iter(lines))\\n        self.assertEqual(self.st, before)\\n\\n    def test_restart_equivalence(self):\\n        all_lines = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}',\\n            '{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":5}',\\n            '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3],[\\\"B\\\",2]]}',\\n            '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}',\\n            '{\\\"id\\\":\\\"v2\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",4]]}',\\n        ]\\n        uninterrupted = import_batch(self.st, all_lines)\\n        final_checkpoint = dump_state(uninterrupted)\\n\\n        # Stop after event 2, checkpoint, restart, finish remaining.\\n        half = import_batch(self.st, all_lines[:2])\\n        cp = dump_state(half)\\n        restarted = resume(cp, all_lines[2:])\\n        self.assertEqual(restarted, final_checkpoint)\\n\\n        # Byte-identical final checkpoint text.\\n        loaded = resume(cp, all_lines[2:])\\n        self.assertEqual(loaded, final_checkpoint)\\n\\n    def test_replay_after_restart(self):\\n        # Workflow replays old events after restart (event ids reused).\\n        all_lines = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}',\\n            '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",2]]}',\\n            '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}',\\n        ]\\n        full = import_batch(self.st, all_lines)\\n        # replay of old events after restart must produce same state\\n        replayed = import_batch(deepcopy(full), all_lines)\\n        self.assertEqual(replayed, full)\\n\\n    def test_reordered_split_lines_replay_exact(self):\\n        # Split reserve lines canonicalize identically to combined.\\n        first = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":20}',\\n            '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",2],[\\\"A\\\",3]]}',\\n        ]\\n        second = [\\n            '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":20}',\\n            '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3],[\\\"A\\\",2]]}',\\n        ]\\n        st1 = import_batch(self.st, first)\\n        st2 = import_batch(self.st, second)\\n        self.assertEqual(st1, st2)\\n        self.assertEqual(st1['requests']['Q'], {'A': 5})\\n\\n\\nif __name__ == '__main__':\\n    unittest.main()\"}",
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  "thought": []
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{
  "id": "68f33d18-6d6b-41fb-9c33-55ec4bc60a25",
  "timestamp": "2026-10-19T08:28:07.484435",
  "source": "environment",
  "parent_id": "6d84a143-a0fe-4a28-a892-930130042a1a",
  "tool_name": "file_editor",
  "tool_call_id": "call_e7983f922f8343a782d04ef3",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_importer.py\nimport unittest\nfrom copy import deepcopy\nfrom pipeline import import_batch, resume\nfrom reducer import empty_state\nfrom checkpoint import dump_state\nfrom codec import parse_event\n\n\nclass ImporterIntegrationTests(unittest.TestCase):\n    def setUp(self):\n        self.st = empty_state()\n\n    def test_end_to_end_workflow(self):\n        lines = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}',\n            '{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":5}',\n            '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3],[\"B\",2]]}',\n            '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}',\n        ]\n        st = import_batch(self.st, iter(lines))\n        self.assertEqual(st['stock']['A'], 10)\n        self.assertEqual(st['stock']['B'], 5)\n        self.assertNotIn('Q', st['requests'])\n        self.assertEqual(set(st['seen']), {'r1', 'r2', 'v1', 'c1'})\n        # input state unchanged\n        self.assertEqual(self.st['stock'], {})\n\n    def test_empty_batch_detached_equal(self):\n        st = import_batch(self.st, [])\n        self.assertEqual(st, empty_state())\n        st['stock']['X'] = 1\n        self.assertNotIn('X', self.st['stock'])\n\n    def test_failed_batch_leaves_state_unchanged(self):\n        lines = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}',\n            '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",2]]}',\n            '{\"id\":\"v2\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",9]]}',  # fails\n        ]\n        before = deepcopy(self.st)\n        with self.assertRaises(ValueError):\n            import_batch(self.st, iter(lines))\n        self.assertEqual(self.st, before)\n        self.assertEqual(self.st['seen'], {})\n\n    def test_failed_parse_leaves_state_unchanged(self):\n        lines = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}',\n            '{not json',\n        ]\n        before = deepcopy(self.st)\n        with self.assertRaises(ValueError):\n            import_batch(self.st, iter(lines))\n        self.assertEqual(self.st, before)\n\n    def test_restart_equivalence(self):\n        all_lines = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}',\n            '{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":5}',\n            '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3],[\"B\",2]]}',\n            '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}',\n            '{\"id\":\"v2\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",4]]}',\n        ]\n        uninterrupted = import_batch(self.st, all_lines)\n        final_checkpoint = dump_state(uninterrupted)\n\n        # Stop after event 2, checkpoint, restart, finish remaining.\n        half = import_batch(self.st, all_lines[:2])\n        cp = dump_state(half)\n        restarted = resume(cp, all_lines[2:])\n        self.assertEqual(restarted, final_checkpoint)\n\n        # Byte-identical final checkpoint text.\n        loaded = resume(cp, all_lines[2:])\n        self.assertEqual(loaded, final_checkpoint)\n\n    def test_replay_after_restart(self):\n        # Workflow replays old events after restart (event ids reused).\n        all_lines = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}',\n            '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",2]]}',\n            '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}',\n        ]\n        full = import_batch(self.st, all_lines)\n        # replay of old events after restart must produce same state\n        replayed = import_batch(deepcopy(full), all_lines)\n        self.assertEqual(replayed, full)\n\n    def test_reordered_split_lines_replay_exact(self):\n        # Split reserve lines canonicalize identically to combined.\n        first = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":20}',\n            '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",2],[\"A\",3]]}',\n        ]\n        second = [\n            '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":20}',\n            '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3],[\"A\",2]]}',\n        ]\n        st1 = import_batch(self.st, first)\n        st2 = import_batch(self.st, second)\n        self.assertEqual(st1, st2)\n        self.assertEqual(st1['requests']['Q'], {'A': 5})\n\n\nif __name__ == '__main__':\n    unittest.main()"
      }
    ],
    "is_error": false,
    "command": "create",
    "path": "/workspace/test_importer.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
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  "action_id": "6d84a143-a0fe-4a28-a892-930130042a1a",
  "extended_content": [],
  "kind": "ObservationEvent"
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{
  "id": "13a21da1-fb21-46cc-a498-9268718a7ca2",
  "timestamp": "2026-10-19T08:28:09.337885",
  "source": "agent",
  "parent_id": "68f33d18-6d6b-41fb-9c33-55ec4bc60a25",
  "responses_reasoning_item": null,
  "action": {
    "command": "cd /workspace && python3 -m unittest -v",
    "is_input": false,
    "timeout": null,
    "reset": false,
    "kind": "TerminalAction"
  },
  "tool_name": "terminal",
  "tool_call_id": "call_2918e2da0785477eb15ad0d8",
  "tool_call": {
    "id": "call_2918e2da0785477eb15ad0d8",
    "responses_item_id": null,
    "name": "terminal",
    "arguments": "{\"command\": \"cd /workspace && python3 -m unittest -v\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792416487-v1bR4kYqdqJMZeC5X8nr",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "terminal: {\"command\": \"cd /workspace && python3 -m unittest -v\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "1799814e-83fb-4054-91e6-488ec6aadd2b",
  "timestamp": "2026-10-19T08:28:09.527146",
  "source": "environment",
  "parent_id": "13a21da1-fb21-46cc-a498-9268718a7ca2",
  "tool_name": "terminal",
  "tool_call_id": "call_2918e2da0785477eb15ad0d8",
  "observation": {
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      {
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        "type": "text",
        "text": "test_dump_has_exact_format (test_checkpoint.CheckpointTests) ... FAIL\ntest_equal_states_different_insertion_order_same_text (test_checkpoint.CheckpointTests) ... ok\ntest_load_accepts_surrounding_whitespace (test_checkpoint.CheckpointTests) ... ok\ntest_load_does_not_mutate_input (test_checkpoint.CheckpointTests) ... ok\ntest_load_result_detached (test_checkpoint.CheckpointTests) ... ok\ntest_reject_bad_version (test_checkpoint.CheckpointTests) ... ok\ntest_reject_boolean_quantity_in_stock (test_checkpoint.CheckpointTests) ... ok\ntest_reject_duplicate_keys_in_state (test_checkpoint.CheckpointTests) ... ok\ntest_reject_extra_wrapper_key (test_checkpoint.CheckpointTests) ... ok\ntest_reject_float_quantity_in_requests (test_checkpoint.CheckpointTests) ... ok\ntest_rejects_reordered_reserve_seen (test_checkpoint.CheckpointTests) ... ERROR\ntest_rejects_unaggregated_reserve_seen (test_checkpoint.CheckpointTests) ... ERROR\ntest_roundtrip_preserves_state (test_checkpoint.CheckpointTests) ... FAIL\ntest_cancel (test_codec.ParseEventTests) ... ok\ntest_preserves_strings_exactly (test_codec.ParseEventTests) ... ok\ntest_rejects_boolean_quantity (test_codec.ParseEventTests) ... ok\ntest_rejects_duplicate_keys (test_codec.ParseEventTests) ... ok\ntest_rejects_empty_id (test_codec.ParseEventTests) ... ok\ntest_rejects_extra_field (test_codec.ParseEventTests) ... ok\ntest_rejects_float_quantity (test_codec.ParseEventTests) ... ok\ntest_rejects_malformed_json (test_codec.ParseEventTests) ... ok\ntest_rejects_missing_field (test_codec.ParseEventTests) ... ok\ntest_rejects_non_object (test_codec.ParseEventTests) ... ok\ntest_rejects_non_string (test_codec.ParseEventTests) ... ok\ntest_rejects_reserve_bad_pair (test_codec.ParseEventTests) ... ok\ntest_rejects_reserve_non_list_lines (test_codec.ParseEventTests) ... ok\ntest_rejects_unknown_op (test_codec.ParseEventTests) ... ok\ntest_rejects_zero_or_negative_quantity (test_codec.ParseEventTests) ... ok\ntest_reserve_empty_lines (test_codec.ParseEventTests) ... ok\ntest_reserve_sorts_and_aggregates (test_codec.ParseEventTests) ... ok\ntest_restock (test_codec.ParseEventTests) ... ok\ntest_space_is_nonempty_id (test_codec.ParseEventTests) ... ok\ntest_whitespace_surrounding (test_codec.ParseEventTests) ... ok\ntest_empty_batch_detached_equal (test_importer.ImporterIntegrationTests) ... ok\ntest_end_to_end_workflow (test_importer.ImporterIntegrationTests) ... ok\ntest_failed_batch_leaves_state_unchanged (test_importer.ImporterIntegrationTests) ... ok\ntest_failed_parse_leaves_state_unchanged (test_importer.ImporterIntegrationTests) ... ok\ntest_reordered_split_lines_replay_exact (test_importer.ImporterIntegrationTests) ... ok\ntest_replay_after_restart (test_importer.ImporterIntegrationTests) ... ok\ntest_restart_equivalence (test_importer.ImporterIntegrationTests) ... ok\ntest_cancel_inactive_rejected (test_reducer.ApplyEventTests) ... ok\ntest_cancel_restores_and_removes (test_reducer.ApplyEventTests) ... ok\ntest_conflicting_same_id_raises (test_reducer.ApplyEventTests) ... ok\ntest_empty_reserve_creates_active_request (test_reducer.ApplyEventTests) ... ok\ntest_request_reuse_after_cancel (test_reducer.ApplyEventTests) ... ok\ntest_reserve_deducts (test_reducer.ApplyEventTests) ... ok\ntest_reserve_duplicate_request_rejected (test_reducer.ApplyEventTests) ... ok\ntest_reserve_insufficient_rejected (test_reducer.ApplyEventTests) ... ok\ntest_reserve_unknown_sku_rejected (test_reducer.ApplyEventTests) ... ok\ntest_restock_adds (test_reducer.ApplyEventTests) ... ok\ntest_returned_seen_event_detached (test_reducer.ApplyEventTests) ... FAIL\ntest_seen_persists_after_cancel (test_reducer.ApplyEventTests) ... ok\ntest_seen_replay_equal_event_no_change (test_reducer.ApplyEventTests) ... ok\n\n======================================================================\nERROR: test_rejects_reordered_reserve_seen (test_checkpoint.CheckpointTests)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/test_checkpoint.py\", line 87, in test_rejects_reordered_reserve_seen\n    st = apply_event(st, parse_event(\n  File \"/workspace/reducer.py\", line 22, in apply_event\n    raise ValueError('cannot reserve')\nValueError: cannot reserve\n\n======================================================================\nERROR: test_rejects_unaggregated_reserve_seen (test_checkpoint.CheckpointTests)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/test_checkpoint.py\", line 97, in test_rejects_unaggregated_reserve_seen\n    st = apply_event(st, parse_event(\n  File \"/workspace/reducer.py\", line 22, in apply_event\n    raise ValueError('cannot reserve')\nValueError: cannot reserve\n\n======================================================================\nFAIL: test_dump_has_exact_format (test_checkpoint.CheckpointTests)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/test_checkpoint.py\", line 31, in test_dump_has_exact_format\n    self.assertTrue(text.startswith('{\"version\":1,'))\nAssertionError: False is not true\n\n======================================================================\nFAIL: test_roundtrip_preserves_state (test_checkpoint.CheckpointTests)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/test_checkpoint.py\", line 22, in test_roundtrip_preserves_state\n    self.assertEqual(list(loaded), ['stock', 'requests', 'seen'])\nAssertionError: Lists differ: ['requests', 'seen', 'stock'] != ['stock', 'requests', 'seen']\n\nFirst differing element 0:\n'requests'\n'stock'\n\n- ['requests', 'seen', 'stock']\n+ ['stock', 'requests', 'seen']\n\n======================================================================\nFAIL: test_returned_seen_event_detached (test_reducer.ApplyEventTests)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/test_reducer.py\", line 112, in test_returned_seen_event_detached\n    self.assertEqual(self.state['seen'], {})\nAssertionError: {'r1': {'id': 'r1', 'op': 'restock', 'sku'[72 chars]: 2}} != {}\n+ {}\n- {'r1': {'id': 'r1', 'op': 'restock', 'qty': 10, 'sku': 'A'},\n-  'r2': {'id': 'r2', 'op': 'restock', 'qty': 2, 'sku': 'B'}}\n\n----------------------------------------------------------------------\nRan 53 tests in 0.003s\n\nFAILED (failures=3, errors=2)\n"
      }
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  "id": "7b7afd1b-d861-4e68-bbaa-0c89d9d6af79",
  "timestamp": "2026-10-19T08:28:25.531394",
  "source": "environment",
  "parent_id": "c387a8e4-9e75-4f74-8fbb-2aa09f8729ad",
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    "content": [
      {
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        "type": "text",
        "text": "Updated /workspace/test_checkpoint.py\nimport unittest\nfrom copy import deepcopy\nfrom codec import parse_event\nfrom reducer import empty_state, apply_event\nfrom checkpoint import dump_state, load_state\n\n\ndef build_state():\n    st = empty_state()\n    st = apply_event(st, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":5}'))\n    st = apply_event(st, parse_event('{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",2]]}'))\n    st = apply_event(st, parse_event('{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}'))\n    return st\n\n\nclass CheckpointTests(unittest.TestCase):\n    def test_roundtrip_preserves_state(self):\n        st = build_state()\n        text = dump_state(st)\n        loaded = load_state(text)\n        self.assertEqual(loaded, st)\n        self.assertEqual(set(loaded), {'stock', 'requests', 'seen'})\n\n    def test_dump_has_exact_format(self):\n        st = empty_state()\n        text = dump_state(st)\n        self.assertTrue(text.endswith('\\n'))\n        self.assertEqual(text.count('\\n'), 1)\n        # sort_keys => keys sorted\n        self.assertIn('\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}', text)\n        self.assertTrue(text.startswith('{\"version\":1,'))\n        self.assertNotIn(' ', text[:-1])  # no spaces from separators\n\n    def test_load_accepts_surrounding_whitespace(self):\n        st = build_state()\n        text = dump_state(st)\n        loaded = load_state('  \\n' + text + ' \\n ')\n        self.assertEqual(loaded, st)\n\n    def test_equal_states_different_insertion_order_same_text(self):\n        st1 = empty_state()\n        st1 = apply_event(st1, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":1}'))\n        st1 = apply_event(st1, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}'))\n        # Build equivalent state with different stock insertion order\n        st2 = empty_state()\n        st2 = apply_event(st2, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}'))\n        st2 = apply_event(st2, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":1}'))\n        self.assertEqual(st1, st2)\n        self.assertEqual(dump_state(st1), dump_state(st2))\n\n    def test_reject_boolean_quantity_in_stock(self):\n        st = empty_state()\n        st['stock']['A'] = True\n        with self.assertRaises(ValueError):\n            dump_state(st)\n\n    def test_reject_float_quantity_in_requests(self):\n        st = empty_state()\n        st['requests']['Q'] = {'A': 1.0}\n        with self.assertRaises(ValueError):\n            dump_state(st)\n\n    def test_reject_bad_version(self):\n        st = empty_state()\n        text = dump_state(st)\n        wrapped = text.replace('\"version\":1', '\"version\":true')\n        with self.assertRaises(ValueError):\n            load_state(wrapped)\n\n    def test_reject_extra_wrapper_key(self):\n        st = empty_state()\n        text = dump_state(st).rstrip('\\n')\n        wrapped = text[:-1] + ',\"extra\":1}'\n        with self.assertRaises(ValueError):\n            load_state(wrapped)\n\n    def test_reject_duplicate_keys_in_state(self):\n        st = empty_state()\n        text = dump_state(st).rstrip('\\n')\n        # craft duplicate stock key\n        bad = '{\"version\":1,\"state\":{\"stock\":{\"A\":1,\"A\":2},\"requests\":{},\"seen\":{}}}'\n        with self.assertRaises(ValueError):\n            load_state(bad)\n\n    def test_rejects_reordered_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1],[\"B\",2]]}'))\n        # tamper seen to reorder lines\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_rejects_unaggregated_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}'))\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_load_does_not_mutate_input(self):\n        st = build_state()\n        text = dump_state(st)\n        before = text\n        load_state(text)\n        self.assertEqual(text, before)\n\n    def test_load_result_detached(self):\n        st = build_state()\n        loaded = load_state(dump_state(st))\n        loaded['stock']['NEW'] = 1\n        self.assertNotIn('NEW', st['stock'])\n\n\nif __name__ == '__main__':\n    unittest.main()"
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{
  "id": "03449c00-1e0b-467b-bc24-16ee6a408e5b",
  "timestamp": "2026-10-19T08:28:27.415086",
  "source": "environment",
  "parent_id": "4841625e-a25b-4778-b2c9-10274cf3b754",
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    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_checkpoint.py\nimport unittest\nfrom copy import deepcopy\nfrom codec import parse_event\nfrom reducer import empty_state, apply_event\nfrom checkpoint import dump_state, load_state\n\n\ndef build_state():\n    st = empty_state()\n    st = apply_event(st, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":5}'))\n    st = apply_event(st, parse_event('{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",2]]}'))\n    st = apply_event(st, parse_event('{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}'))\n    return st\n\n\nclass CheckpointTests(unittest.TestCase):\n    def test_roundtrip_preserves_state(self):\n        st = build_state()\n        text = dump_state(st)\n        loaded = load_state(text)\n        self.assertEqual(loaded, st)\n        self.assertEqual(set(loaded), {'stock', 'requests', 'seen'})\n\n    def test_dump_has_exact_format(self):\n        st = empty_state()\n        text = dump_state(st)\n        self.assertTrue(text.endswith('\\n'))\n        self.assertEqual(text.count('\\n'), 1)\n        # sort_keys => keys sorted\n        self.assertIn('\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}', text)\n        self.assertIn('\"version\":1', text)\n        self.assertNotIn(' ', text[:-1])  # no spaces from separators\n\n    def test_load_accepts_surrounding_whitespace(self):\n        st = build_state()\n        text = dump_state(st)\n        loaded = load_state('  \\n' + text + ' \\n ')\n        self.assertEqual(loaded, st)\n\n    def test_equal_states_different_insertion_order_same_text(self):\n        st1 = empty_state()\n        st1 = apply_event(st1, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":1}'))\n        st1 = apply_event(st1, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}'))\n        # Build equivalent state with different stock insertion order\n        st2 = empty_state()\n        st2 = apply_event(st2, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}'))\n        st2 = apply_event(st2, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":1}'))\n        self.assertEqual(st1, st2)\n        self.assertEqual(dump_state(st1), dump_state(st2))\n\n    def test_reject_boolean_quantity_in_stock(self):\n        st = empty_state()\n        st['stock']['A'] = True\n        with self.assertRaises(ValueError):\n            dump_state(st)\n\n    def test_reject_float_quantity_in_requests(self):\n        st = empty_state()\n        st['requests']['Q'] = {'A': 1.0}\n        with self.assertRaises(ValueError):\n            dump_state(st)\n\n    def test_reject_bad_version(self):\n        st = empty_state()\n        text = dump_state(st)\n        wrapped = text.replace('\"version\":1', '\"version\":true')\n        with self.assertRaises(ValueError):\n            load_state(wrapped)\n\n    def test_reject_extra_wrapper_key(self):\n        st = empty_state()\n        text = dump_state(st).rstrip('\\n')\n        wrapped = text[:-1] + ',\"extra\":1}'\n        with self.assertRaises(ValueError):\n            load_state(wrapped)\n\n    def test_reject_duplicate_keys_in_state(self):\n        st = empty_state()\n        text = dump_state(st).rstrip('\\n')\n        # craft duplicate stock key\n        bad = '{\"version\":1,\"state\":{\"stock\":{\"A\":1,\"A\":2},\"requests\":{},\"seen\":{}}}'\n        with self.assertRaises(ValueError):\n            load_state(bad)\n\n    def test_rejects_reordered_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1],[\"B\",2]]}'))\n        # tamper seen to reorder lines\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_rejects_unaggregated_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}'))\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_load_does_not_mutate_input(self):\n        st = build_state()\n        text = dump_state(st)\n        before = text\n        load_state(text)\n        self.assertEqual(text, before)\n\n    def test_load_result_detached(self):\n        st = build_state()\n        loaded = load_state(dump_state(st))\n        loaded['stock']['NEW'] = 1\n        self.assertNotIn('NEW', st['stock'])\n\n\nif __name__ == '__main__':\n    unittest.main()"
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{
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  "timestamp": "2026-10-19T08:28:33.029546",
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    "path": "/workspace/test_checkpoint.py",
    "file_text": null,
    "old_str": "def test_rejects_reordered_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1],[\"B\",2]]}'))\n        # tamper seen to reorder lines\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_rejects_unaggregated_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}'))\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)",
    "new_str": "def test_rejects_reordered_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event('{\"id\":\"r\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":2}'))\n        st = apply_event(st, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":3}'))\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1],[\"B\",2]]}'))\n        # tamper seen to reorder lines\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_rejects_unaggregated_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event('{\"id\":\"r\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":3}'))\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"B\",1]]}'))\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)",
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_a7f9b11172e945bcb0e6db65",
  "tool_call": {
    "id": "call_a7f9b11172e945bcb0e6db65",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/test_checkpoint.py\", \"old_str\": \"def test_rejects_reordered_reserve_seen(self):\\n        st = empty_state()\\n        st = apply_event(st, parse_event(\\n            '{\\\"id\\\":\\\"v\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1],[\\\"B\\\",2]]}'))\\n        # tamper seen to reorder lines\\n        st2 = deepcopy(st)\\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\\n        with self.assertRaises(ValueError):\\n            dump_state(st2)\\n\\n    def test_rejects_unaggregated_reserve_seen(self):\\n        st = empty_state()\\n        st = apply_event(st, parse_event(\\n            '{\\\"id\\\":\\\"v\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}'))\\n        st2 = deepcopy(st)\\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\\n        with self.assertRaises(ValueError):\\n            dump_state(st2)\", \"new_str\": \"def test_rejects_reordered_reserve_seen(self):\\n        st = empty_state()\\n        st = apply_event(st, parse_event('{\\\"id\\\":\\\"r\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":2}'))\\n        st = apply_event(st, parse_event('{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":3}'))\\n        st = apply_event(st, parse_event(\\n            '{\\\"id\\\":\\\"v\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1],[\\\"B\\\",2]]}'))\\n        # tamper seen to reorder lines\\n        st2 = deepcopy(st)\\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\\n        with self.assertRaises(ValueError):\\n            dump_state(st2)\\n\\n    def test_rejects_unaggregated_reserve_seen(self):\\n        st = empty_state()\\n        st = apply_event(st, parse_event('{\\\"id\\\":\\\"r\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":3}'))\\n        st = apply_event(st, parse_event(\\n            '{\\\"id\\\":\\\"v\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"B\\\",1]]}'))\\n        st2 = deepcopy(st)\\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\\n        with self.assertRaises(ValueError):\\n            dump_state(st2)\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792416507-e4dCkPSWFdjJATyt9ThH",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/test_checkpoint.py\", \"old_str\": \"def test_rejects_reordered_reserve_seen(self):\\n        st = empty_state()\\n        st = apply_event(st, parse_event(\\n            '{\\\"id\\\":\\\"v\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1],[\\\"B\\\",2]]}'))\\n        # tamper seen to reorder lines\\n        st2 = deepcopy(st)\\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\\n        with self.assertRaises(ValueError):\\n            dump_state(st2)\\n\\n    def test_rejects_unaggregated_reserve_seen(self):\\n        st = empty_state()\\n        st = apply_event(st, parse_event(\\n            '{\\\"id\\\":\\\"v\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}'))\\n        st2 = deepcopy(st)\\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\\n        with self.assertRaises(ValueError):\\n            dump_state(st2)\", \"new_str\": \"def test_rejects_reordered_reserve_seen(self):\\n        st = empty_state()\\n        st = apply_event(st, parse_event('{\\\"id\\\":\\\"r\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":2}'))\\n        st = apply_event(st, parse_event('{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":3}'))\\n        st = apply_event(st, parse_event(\\n            '{\\\"id\\\":\\\"v\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1],[\\\"B\\\",2]]}'))\\n        # tamper seen to reorder lines\\n        st2 = deepcopy(st)\\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\\n        with self.assertRaises(ValueError):\\n            dump_state(st2)\\n\\n    def test_rejects_unaggregated_reserve_seen(self):\\n        st = empty_state()\\n        st = apply_event(st, parse_event('{\\\"id\\\":\\\"r\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":3}'))\\n        st = apply_event(st, parse_event(\\n            '{\\\"id\\\":\\\"v\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"B\\\",1]]}'))\\n        st2 = deepcopy(st)\\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\\n        with self.assertRaises(ValueError):\\n            dump_state(st2)\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "d0aa6db7-e15a-468c-aeef-487593d5ebfc",
  "timestamp": "2026-10-19T08:28:33.165024",
  "source": "environment",
  "parent_id": "70ab6642-3f97-4ffa-85cf-43b44bf2ea0c",
  "tool_name": "file_editor",
  "tool_call_id": "call_a7f9b11172e945bcb0e6db65",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_checkpoint.py\nimport unittest\nfrom copy import deepcopy\nfrom codec import parse_event\nfrom reducer import empty_state, apply_event\nfrom checkpoint import dump_state, load_state\n\n\ndef build_state():\n    st = empty_state()\n    st = apply_event(st, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":5}'))\n    st = apply_event(st, parse_event('{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",2]]}'))\n    st = apply_event(st, parse_event('{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}'))\n    return st\n\n\nclass CheckpointTests(unittest.TestCase):\n    def test_roundtrip_preserves_state(self):\n        st = build_state()\n        text = dump_state(st)\n        loaded = load_state(text)\n        self.assertEqual(loaded, st)\n        self.assertEqual(set(loaded), {'stock', 'requests', 'seen'})\n\n    def test_dump_has_exact_format(self):\n        st = empty_state()\n        text = dump_state(st)\n        self.assertTrue(text.endswith('\\n'))\n        self.assertEqual(text.count('\\n'), 1)\n        # sort_keys => keys sorted\n        self.assertIn('\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}', text)\n        self.assertIn('\"version\":1', text)\n        self.assertNotIn(' ', text[:-1])  # no spaces from separators\n\n    def test_load_accepts_surrounding_whitespace(self):\n        st = build_state()\n        text = dump_state(st)\n        loaded = load_state('  \\n' + text + ' \\n ')\n        self.assertEqual(loaded, st)\n\n    def test_equal_states_different_insertion_order_same_text(self):\n        st1 = empty_state()\n        st1 = apply_event(st1, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":1}'))\n        st1 = apply_event(st1, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}'))\n        # Build equivalent state with different stock insertion order\n        st2 = empty_state()\n        st2 = apply_event(st2, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}'))\n        st2 = apply_event(st2, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":1}'))\n        self.assertEqual(st1, st2)\n        self.assertEqual(dump_state(st1), dump_state(st2))\n\n    def test_reject_boolean_quantity_in_stock(self):\n        st = empty_state()\n        st['stock']['A'] = True\n        with self.assertRaises(ValueError):\n            dump_state(st)\n\n    def test_reject_float_quantity_in_requests(self):\n        st = empty_state()\n        st['requests']['Q'] = {'A': 1.0}\n        with self.assertRaises(ValueError):\n            dump_state(st)\n\n    def test_reject_bad_version(self):\n        st = empty_state()\n        text = dump_state(st)\n        wrapped = text.replace('\"version\":1', '\"version\":true')\n        with self.assertRaises(ValueError):\n            load_state(wrapped)\n\n    def test_reject_extra_wrapper_key(self):\n        st = empty_state()\n        text = dump_state(st).rstrip('\\n')\n        wrapped = text[:-1] + ',\"extra\":1}'\n        with self.assertRaises(ValueError):\n            load_state(wrapped)\n\n    def test_reject_duplicate_keys_in_state(self):\n        st = empty_state()\n        text = dump_state(st).rstrip('\\n')\n        # craft duplicate stock key\n        bad = '{\"version\":1,\"state\":{\"stock\":{\"A\":1,\"A\":2},\"requests\":{},\"seen\":{}}}'\n        with self.assertRaises(ValueError):\n            load_state(bad)\n\n    def test_rejects_reordered_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event('{\"id\":\"r\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":2}'))\n        st = apply_event(st, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":3}'))\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1],[\"B\",2]]}'))\n        # tamper seen to reorder lines\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_rejects_unaggregated_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event('{\"id\":\"r\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":3}'))\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"B\",1]]}'))\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_load_does_not_mutate_input(self):\n        st = build_state()\n        text = dump_state(st)\n        before = text\n        load_state(text)\n        self.assertEqual(text, before)\n\n    def test_load_result_detached(self):\n        st = build_state()\n        loaded = load_state(dump_state(st))\n        loaded['stock']['NEW'] = 1\n        self.assertNotIn('NEW', st['stock'])\n\n\nif __name__ == '__main__':\n    unittest.main()"
      }
    ],
    "is_error": false,
    "command": "str_replace",
    "path": "/workspace/test_checkpoint.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
  },
  "action_id": "70ab6642-3f97-4ffa-85cf-43b44bf2ea0c",
  "extended_content": [],
  "kind": "ObservationEvent"
}

{
  "id": "72d225b7-ada6-4f6a-827a-400a313f19cd",
  "timestamp": "2026-10-19T08:28:38.805762",
  "source": "agent",
  "parent_id": "d0aa6db7-e15a-468c-aeef-487593d5ebfc",
  "responses_reasoning_item": null,
  "action": {
    "command": "str_replace",
    "path": "/workspace/test_reducer.py",
    "file_text": null,
    "old_str": "def test_returned_seen_event_detached(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        seen_ev = st['seen']['v1']\n        # mutate result's seen event, original state unaffected\n        seen_ev['lines'][0][1] = 999\n        self.assertEqual(self.state['seen'], {})\n        # new separate state from replay also detached\n        replay = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        self.assertEqual(replay['seen']['v1']['lines'][0][1], 1)",
    "new_str": "def test_returned_seen_event_detached(self):\n        # Note: self.state (from setUp) already holds r1,r2 in seen.\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        seen_ev = st['seen']['v1']\n        # mutate result's seen event; the input state's seen must not gain v1/change\n        seen_ev['lines'][0][1] = 999\n        self.assertNotIn('v1', self.state['seen'])\n        self.assertEqual(self.state['seen']['r1']['qty'], 10)\n        # a replay from the original detached input yields an unmutated event value\n        replay = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        self.assertEqual(replay['seen']['v1']['lines'][0][1], 1)",
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_fb37c9f506714a1dae38158f",
  "tool_call": {
    "id": "call_fb37c9f506714a1dae38158f",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/test_reducer.py\", \"old_str\": \"def test_returned_seen_event_detached(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        seen_ev = st['seen']['v1']\\n        # mutate result's seen event, original state unaffected\\n        seen_ev['lines'][0][1] = 999\\n        self.assertEqual(self.state['seen'], {})\\n        # new separate state from replay also detached\\n        replay = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        self.assertEqual(replay['seen']['v1']['lines'][0][1], 1)\", \"new_str\": \"def test_returned_seen_event_detached(self):\\n        # Note: self.state (from setUp) already holds r1,r2 in seen.\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        seen_ev = st['seen']['v1']\\n        # mutate result's seen event; the input state's seen must not gain v1/change\\n        seen_ev['lines'][0][1] = 999\\n        self.assertNotIn('v1', self.state['seen'])\\n        self.assertEqual(self.state['seen']['r1']['qty'], 10)\\n        # a replay from the original detached input yields an unmutated event value\\n        replay = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        self.assertEqual(replay['seen']['v1']['lines'][0][1], 1)\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792416513-0z4THFpjq66kq3qWXyZI",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/test_reducer.py\", \"old_str\": \"def test_returned_seen_event_detached(self):\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        seen_ev = st['seen']['v1']\\n        # mutate result's seen event, original state unaffected\\n        seen_ev['lines'][0][1] = 999\\n        self.assertEqual(self.state['seen'], {})\\n        # new separate state from replay also detached\\n        replay = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        self.assertEqual(replay['seen']['v1']['lines'][0][1], 1)\", \"new_str\": \"def test_returned_seen_event_detached(self):\\n        # Note: self.state (from setUp) already holds r1,r2 in seen.\\n        st = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        seen_ev = st['seen']['v1']\\n        # mutate result's seen event; the input state's seen must not gain v1/change\\n        seen_ev['lines'][0][1] = 999\\n        self.assertNotIn('v1', self.state['seen'])\\n        self.assertEqual(self.state['seen']['r1']['qty'], 10)\\n        # a replay from the original detached input yields an unmutated event value\\n        replay = apply(self.state, '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",1]]}')\\n        self.assertEqual(replay['seen']['v1']['lines'][0][1], 1)\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "95ec6d18-a7f5-49db-aac4-6793384abc66",
  "timestamp": "2026-10-19T08:28:38.953158",
  "source": "environment",
  "parent_id": "72d225b7-ada6-4f6a-827a-400a313f19cd",
  "tool_name": "file_editor",
  "tool_call_id": "call_fb37c9f506714a1dae38158f",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_reducer.py\nimport unittest\nfrom copy import deepcopy\nfrom codec import parse_event\nfrom reducer import empty_state, apply_event\n\n\ndef apply(state, line):\n    return apply_event(state, parse_event(line))\n\n\nclass ApplyEventTests(unittest.TestCase):\n    def setUp(self):\n        self.state = empty_state()\n        self.state = apply(self.state, '{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}')\n        self.state = apply(self.state, '{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}')\n\n    def _check_detached(self, original, result):\n        # Mutating result must not affect original.\n        self.assertEqual(original, deepcopy(original))\n        result['stock']['NOPE'] = 999\n        self.assertNotIn('NOPE', original['stock'])\n\n    def test_restock_adds(self):\n        st = apply_event(self.state, parse_event(\n            '{\"id\":\"n1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":3}'))\n        self.assertEqual(st['stock']['A'], 13)\n        self.assertEqual(self.state['stock']['A'], 10)  # unchanged\n\n    def test_reserve_deducts(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",4],[\"B\",1]]}')\n        self.assertEqual(st['stock']['A'], 6)\n        self.assertEqual(st['stock']['B'], 1)\n        self.assertEqual(st['requests']['Q'], {'A': 4, 'B': 1})\n        # original unchanged\n        self.assertEqual(self.state['stock']['A'], 10)\n\n    def test_cancel_restores_and_removes(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        self.assertIn('Q', st['requests'])\n        st2 = apply(st, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        self.assertEqual(st2['stock']['A'], 10)\n        self.assertNotIn('Q', st2['requests'])\n\n    def test_request_reuse_after_cancel(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        st = apply(st, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        # Reuse request id with new event id\n        st = apply(st, '{\"id\":\"v2\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        self.assertEqual(st['requests']['Q'], {'A': 1})\n        self.assertEqual(st['stock']['A'], 9)\n\n    def test_seen_replay_equal_event_no_change(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        before = deepcopy(st)\n        replay = apply(st, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        # stock unchanged after replay, but state detached\n        self.assertEqual(replay['stock'], before['stock'])\n        self.assertEqual(replay['requests'], before['requests'])\n        self._check_detached(st, replay)\n\n    def test_conflicting_same_id_raises(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}')\n        before = deepcopy(st)\n        with self.assertRaises(ValueError):\n            apply(st, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",4]]}')\n        self.assertEqual(st, before)\n\n    def test_reserve_unknown_sku_rejected(self):\n        before = deepcopy(self.state)\n        with self.assertRaises(ValueError):\n            apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"ZZZ\",1]]}')\n        self.assertEqual(self.state, before)\n        self.assertNotIn('v1', self.state['seen'])\n\n    def test_reserve_insufficient_rejected(self):\n        before = deepcopy(self.state)\n        with self.assertRaises(ValueError):\n            apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"B\",5]]}')\n        self.assertEqual(self.state, before)\n        self.assertNotIn('v1', self.state['seen'])\n\n    def test_reserve_duplicate_request_rejected(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        before = deepcopy(st)\n        with self.assertRaises(ValueError):\n            apply(st, '{\"id\":\"v2\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        self.assertEqual(st, before)\n\n    def test_cancel_inactive_rejected(self):\n        before = deepcopy(self.state)\n        with self.assertRaises(ValueError):\n            apply(self.state, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        self.assertNotIn('c1', self.state['seen'])\n\n    def test_empty_reserve_creates_active_request(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[]}')\n        self.assertEqual(st['requests']['Q'], {})\n        st2 = apply(st, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        self.assertNotIn('Q', st2['requests'])\n\n    def test_seen_persists_after_cancel(self):\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        st = apply(st, '{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}')\n        self.assertIn('v1', st['seen'])\n        self.assertIn('c1', st['seen'])\n\n    def test_returned_seen_event_detached(self):\n        # Note: self.state (from setUp) already holds r1,r2 in seen.\n        st = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        seen_ev = st['seen']['v1']\n        # mutate result's seen event; the input state's seen must not gain v1/change\n        seen_ev['lines'][0][1] = 999\n        self.assertNotIn('v1', self.state['seen'])\n        self.assertEqual(self.state['seen']['r1']['qty'], 10)\n        # a replay from the original detached input yields an unmutated event value\n        replay = apply(self.state, '{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1]]}')\n        self.assertEqual(replay['seen']['v1']['lines'][0][1], 1)\n\n\nif __name__ == '__main__':\n    unittest.main()"
      }
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{
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{
  "id": "bce4dd8d-28c2-4e57-adda-661512883871",
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  "source": "environment",
  "parent_id": "d75b8d8a-92fc-4bea-a269-ed871e3e8790",
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  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "test_dump_has_exact_format (test_checkpoint.CheckpointTests) ... ok\ntest_equal_states_different_insertion_order_same_text (test_checkpoint.CheckpointTests) ... ok\ntest_load_accepts_surrounding_whitespace (test_checkpoint.CheckpointTests) ... ok\ntest_load_does_not_mutate_input (test_checkpoint.CheckpointTests) ... ok\ntest_load_result_detached (test_checkpoint.CheckpointTests) ... ok\ntest_reject_bad_version (test_checkpoint.CheckpointTests) ... ok\ntest_reject_boolean_quantity_in_stock (test_checkpoint.CheckpointTests) ... ok\ntest_reject_duplicate_keys_in_state (test_checkpoint.CheckpointTests) ... ok\ntest_reject_extra_wrapper_key (test_checkpoint.CheckpointTests) ... ok\ntest_reject_float_quantity_in_requests (test_checkpoint.CheckpointTests) ... ok\ntest_rejects_reordered_reserve_seen (test_checkpoint.CheckpointTests) ... ok\ntest_rejects_unaggregated_reserve_seen (test_checkpoint.CheckpointTests) ... ERROR\ntest_roundtrip_preserves_state (test_checkpoint.CheckpointTests) ... ok\ntest_cancel (test_codec.ParseEventTests) ... ok\ntest_preserves_strings_exactly (test_codec.ParseEventTests) ... ok\ntest_rejects_boolean_quantity (test_codec.ParseEventTests) ... ok\ntest_rejects_duplicate_keys (test_codec.ParseEventTests) ... ok\ntest_rejects_empty_id (test_codec.ParseEventTests) ... ok\ntest_rejects_extra_field (test_codec.ParseEventTests) ... ok\ntest_rejects_float_quantity (test_codec.ParseEventTests) ... ok\ntest_rejects_malformed_json (test_codec.ParseEventTests) ... ok\ntest_rejects_missing_field (test_codec.ParseEventTests) ... ok\ntest_rejects_non_object (test_codec.ParseEventTests) ... ok\ntest_rejects_non_string (test_codec.ParseEventTests) ... ok\ntest_rejects_reserve_bad_pair (test_codec.ParseEventTests) ... ok\ntest_rejects_reserve_non_list_lines (test_codec.ParseEventTests) ... ok\ntest_rejects_unknown_op (test_codec.ParseEventTests) ... ok\ntest_rejects_zero_or_negative_quantity (test_codec.ParseEventTests) ... ok\ntest_reserve_empty_lines (test_codec.ParseEventTests) ... ok\ntest_reserve_sorts_and_aggregates (test_codec.ParseEventTests) ... ok\ntest_restock (test_codec.ParseEventTests) ... ok\ntest_space_is_nonempty_id (test_codec.ParseEventTests) ... ok\ntest_whitespace_surrounding (test_codec.ParseEventTests) ... ok\ntest_empty_batch_detached_equal (test_importer.ImporterIntegrationTests) ... ok\ntest_end_to_end_workflow (test_importer.ImporterIntegrationTests) ... ok\ntest_failed_batch_leaves_state_unchanged (test_importer.ImporterIntegrationTests) ... ok\ntest_failed_parse_leaves_state_unchanged (test_importer.ImporterIntegrationTests) ... ok\ntest_reordered_split_lines_replay_exact (test_importer.ImporterIntegrationTests) ... ok\ntest_replay_after_restart (test_importer.ImporterIntegrationTests) ... ok\ntest_restart_equivalence (test_importer.ImporterIntegrationTests) ... ok\ntest_cancel_inactive_rejected (test_reducer.ApplyEventTests) ... ok\ntest_cancel_restores_and_removes (test_reducer.ApplyEventTests) ... ok\ntest_conflicting_same_id_raises (test_reducer.ApplyEventTests) ... ok\ntest_empty_reserve_creates_active_request (test_reducer.ApplyEventTests) ... ok\ntest_request_reuse_after_cancel (test_reducer.ApplyEventTests) ... ok\ntest_reserve_deducts (test_reducer.ApplyEventTests) ... ok\ntest_reserve_duplicate_request_rejected (test_reducer.ApplyEventTests) ... ok\ntest_reserve_insufficient_rejected (test_reducer.ApplyEventTests) ... ok\ntest_reserve_unknown_sku_rejected (test_reducer.ApplyEventTests) ... ok\ntest_restock_adds (test_reducer.ApplyEventTests) ... ok\ntest_returned_seen_event_detached (test_reducer.ApplyEventTests) ... ok\ntest_seen_persists_after_cancel (test_reducer.ApplyEventTests) ... ok\ntest_seen_replay_equal_event_no_change (test_reducer.ApplyEventTests) ... ok\n\n======================================================================\nERROR: test_rejects_unaggregated_reserve_seen (test_checkpoint.CheckpointTests)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/test_checkpoint.py\", line 100, in test_rejects_unaggregated_reserve_seen\n    st = apply_event(st, parse_event(\n  File \"/workspace/reducer.py\", line 22, in apply_event\n    raise ValueError('cannot reserve')\nValueError: cannot reserve\n\n----------------------------------------------------------------------\nRan 53 tests in 0.003s\n\nFAILED (errors=1)\n"
      }
    ],
    "is_error": false,
    "command": "cd /workspace && python3 -m unittest -v",
    "exit_code": 1,
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    },
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    "kind": "TerminalObservation"
  },
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  "kind": "ObservationEvent"
}

{
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  "timestamp": "2026-10-19T08:28:50.733797",
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    "old_str": "def test_rejects_unaggregated_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event('{\"id\":\"r\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":3}'))\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"B\",1]]}'))\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)",
    "new_str": "def test_rejects_unaggregated_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event('{\"id\":\"r\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":3}'))\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}'))\n        st2 = deepcopy(st)\n        # seen value must remain aggregated; an unaggregated form is invalid\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)",
    "insert_line": null,
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    "origin": "completion"
  },
  "llm_response_id": "gen-1792416523-ldCyr7mE4Ex4lxO0QKlU",
  "security_risk": "UNKNOWN",
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{
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        "text": "Updated /workspace/test_checkpoint.py\nimport unittest\nfrom copy import deepcopy\nfrom codec import parse_event\nfrom reducer import empty_state, apply_event\nfrom checkpoint import dump_state, load_state\n\n\ndef build_state():\n    st = empty_state()\n    st = apply_event(st, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":5}'))\n    st = apply_event(st, parse_event('{\"id\":\"v1\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",2]]}'))\n    st = apply_event(st, parse_event('{\"id\":\"c1\",\"op\":\"cancel\",\"request\":\"Q\"}'))\n    return st\n\n\nclass CheckpointTests(unittest.TestCase):\n    def test_roundtrip_preserves_state(self):\n        st = build_state()\n        text = dump_state(st)\n        loaded = load_state(text)\n        self.assertEqual(loaded, st)\n        self.assertEqual(set(loaded), {'stock', 'requests', 'seen'})\n\n    def test_dump_has_exact_format(self):\n        st = empty_state()\n        text = dump_state(st)\n        self.assertTrue(text.endswith('\\n'))\n        self.assertEqual(text.count('\\n'), 1)\n        # sort_keys => keys sorted\n        self.assertIn('\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}', text)\n        self.assertIn('\"version\":1', text)\n        self.assertNotIn(' ', text[:-1])  # no spaces from separators\n\n    def test_load_accepts_surrounding_whitespace(self):\n        st = build_state()\n        text = dump_state(st)\n        loaded = load_state('  \\n' + text + ' \\n ')\n        self.assertEqual(loaded, st)\n\n    def test_equal_states_different_insertion_order_same_text(self):\n        st1 = empty_state()\n        st1 = apply_event(st1, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":1}'))\n        st1 = apply_event(st1, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}'))\n        # Build equivalent state with different stock insertion order\n        st2 = empty_state()\n        st2 = apply_event(st2, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":2}'))\n        st2 = apply_event(st2, parse_event('{\"id\":\"r1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":1}'))\n        self.assertEqual(st1, st2)\n        self.assertEqual(dump_state(st1), dump_state(st2))\n\n    def test_reject_boolean_quantity_in_stock(self):\n        st = empty_state()\n        st['stock']['A'] = True\n        with self.assertRaises(ValueError):\n            dump_state(st)\n\n    def test_reject_float_quantity_in_requests(self):\n        st = empty_state()\n        st['requests']['Q'] = {'A': 1.0}\n        with self.assertRaises(ValueError):\n            dump_state(st)\n\n    def test_reject_bad_version(self):\n        st = empty_state()\n        text = dump_state(st)\n        wrapped = text.replace('\"version\":1', '\"version\":true')\n        with self.assertRaises(ValueError):\n            load_state(wrapped)\n\n    def test_reject_extra_wrapper_key(self):\n        st = empty_state()\n        text = dump_state(st).rstrip('\\n')\n        wrapped = text[:-1] + ',\"extra\":1}'\n        with self.assertRaises(ValueError):\n            load_state(wrapped)\n\n    def test_reject_duplicate_keys_in_state(self):\n        st = empty_state()\n        text = dump_state(st).rstrip('\\n')\n        # craft duplicate stock key\n        bad = '{\"version\":1,\"state\":{\"stock\":{\"A\":1,\"A\":2},\"requests\":{},\"seen\":{}}}'\n        with self.assertRaises(ValueError):\n            load_state(bad)\n\n    def test_rejects_reordered_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event('{\"id\":\"r\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":2}'))\n        st = apply_event(st, parse_event('{\"id\":\"r2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":3}'))\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",1],[\"B\",2]]}'))\n        # tamper seen to reorder lines\n        st2 = deepcopy(st)\n        st2['seen']['v']['lines'] = [['B', 2], ['A', 1]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_rejects_unaggregated_reserve_seen(self):\n        st = empty_state()\n        st = apply_event(st, parse_event('{\"id\":\"r\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":3}'))\n        st = apply_event(st, parse_event(\n            '{\"id\":\"v\",\"op\":\"reserve\",\"request\":\"Q\",\"lines\":[[\"A\",3]]}'))\n        st2 = deepcopy(st)\n        # seen value must remain aggregated; an unaggregated form is invalid\n        st2['seen']['v']['lines'] = [['A', 1], ['A', 2]]\n        with self.assertRaises(ValueError):\n            dump_state(st2)\n\n    def test_load_does_not_mutate_input(self):\n        st = build_state()\n        text = dump_state(st)\n        before = text\n        load_state(text)\n        self.assertEqual(text, before)\n\n    def test_load_result_detached(self):\n        st = build_state()\n        loaded = load_state(dump_state(st))\n        loaded['stock']['NEW'] = 1\n        self.assertNotIn('NEW', st['stock'])\n\n\nif __name__ == '__main__':\n    unittest.main()"
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{
  "id": "ec17ce87-3782-406b-9505-8ee9388c99aa",
  "timestamp": "2026-10-19T08:28:54.482024",
  "source": "environment",
  "parent_id": "b8ea0557-2a49-49c5-a4e1-fef03548e43b",
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  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "test_dump_has_exact_format (test_checkpoint.CheckpointTests) ... ok\ntest_equal_states_different_insertion_order_same_text (test_checkpoint.CheckpointTests) ... ok\ntest_load_accepts_surrounding_whitespace (test_checkpoint.CheckpointTests) ... ok\ntest_load_does_not_mutate_input (test_checkpoint.CheckpointTests) ... ok\ntest_load_result_detached (test_checkpoint.CheckpointTests) ... ok\ntest_reject_bad_version (test_checkpoint.CheckpointTests) ... ok\ntest_reject_boolean_quantity_in_stock (test_checkpoint.CheckpointTests) ... ok\ntest_reject_duplicate_keys_in_state (test_checkpoint.CheckpointTests) ... ok\ntest_reject_extra_wrapper_key (test_checkpoint.CheckpointTests) ... ok\ntest_reject_float_quantity_in_requests (test_checkpoint.CheckpointTests) ... ok\ntest_rejects_reordered_reserve_seen (test_checkpoint.CheckpointTests) ... ok\ntest_rejects_unaggregated_reserve_seen (test_checkpoint.CheckpointTests) ... ok\ntest_roundtrip_preserves_state (test_checkpoint.CheckpointTests) ... ok\ntest_cancel (test_codec.ParseEventTests) ... ok\ntest_preserves_strings_exactly (test_codec.ParseEventTests) ... ok\ntest_rejects_boolean_quantity (test_codec.ParseEventTests) ... ok\ntest_rejects_duplicate_keys (test_codec.ParseEventTests) ... ok\ntest_rejects_empty_id (test_codec.ParseEventTests) ... ok\ntest_rejects_extra_field (test_codec.ParseEventTests) ... ok\ntest_rejects_float_quantity (test_codec.ParseEventTests) ... ok\ntest_rejects_malformed_json (test_codec.ParseEventTests) ... ok\ntest_rejects_missing_field (test_codec.ParseEventTests) ... ok\ntest_rejects_non_object (test_codec.ParseEventTests) ... ok\ntest_rejects_non_string (test_codec.ParseEventTests) ... ok\ntest_rejects_reserve_bad_pair (test_codec.ParseEventTests) ... ok\ntest_rejects_reserve_non_list_lines (test_codec.ParseEventTests) ... ok\ntest_rejects_unknown_op (test_codec.ParseEventTests) ... ok\ntest_rejects_zero_or_negative_quantity (test_codec.ParseEventTests) ... ok\ntest_reserve_empty_lines (test_codec.ParseEventTests) ... ok\ntest_reserve_sorts_and_aggregates (test_codec.ParseEventTests) ... ok\ntest_restock (test_codec.ParseEventTests) ... ok\ntest_space_is_nonempty_id (test_codec.ParseEventTests) ... ok\ntest_whitespace_surrounding (test_codec.ParseEventTests) ... ok\ntest_empty_batch_detached_equal (test_importer.ImporterIntegrationTests) ... ok\ntest_end_to_end_workflow (test_importer.ImporterIntegrationTests) ... ok\ntest_failed_batch_leaves_state_unchanged (test_importer.ImporterIntegrationTests) ... ok\ntest_failed_parse_leaves_state_unchanged (test_importer.ImporterIntegrationTests) ... ok\ntest_reordered_split_lines_replay_exact (test_importer.ImporterIntegrationTests) ... ok\ntest_replay_after_restart (test_importer.ImporterIntegrationTests) ... ok\ntest_restart_equivalence (test_importer.ImporterIntegrationTests) ... ok\ntest_cancel_inactive_rejected (test_reducer.ApplyEventTests) ... ok\ntest_cancel_restores_and_removes (test_reducer.ApplyEventTests) ... ok\ntest_conflicting_same_id_raises (test_reducer.ApplyEventTests) ... ok\ntest_empty_reserve_creates_active_request (test_reducer.ApplyEventTests) ... ok\ntest_request_reuse_after_cancel (test_reducer.ApplyEventTests) ... ok\ntest_reserve_deducts (test_reducer.ApplyEventTests) ... ok\ntest_reserve_duplicate_request_rejected (test_reducer.ApplyEventTests) ... ok\ntest_reserve_insufficient_rejected (test_reducer.ApplyEventTests) ... ok\ntest_reserve_unknown_sku_rejected (test_reducer.ApplyEventTests) ... ok\ntest_restock_adds (test_reducer.ApplyEventTests) ... ok\ntest_returned_seen_event_detached (test_reducer.ApplyEventTests) ... ok\ntest_seen_persists_after_cancel (test_reducer.ApplyEventTests) ... ok\ntest_seen_replay_equal_event_no_change (test_reducer.ApplyEventTests) ... ok\n\n----------------------------------------------------------------------\nRan 53 tests in 0.003s\n\nOK\n"
      }
    ],
    "is_error": false,
    "command": "cd /workspace && python3 -m unittest -v",
    "exit_code": 0,
    "timeout": false,
    "metadata": {
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{
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  "responses_reasoning_item": null,
  "action": {
    "command": "cd /workspace && python3 -c \"from pipeline import import_batch\nfrom reducer import empty_state\nfrom checkpoint import dump_state\nlines = ['{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}']\ns = import_batch(empty_state(), lines)\nprint(repr(dump_state(s)))\"",
    "is_input": false,
    "timeout": null,
    "reset": false,
    "kind": "TerminalAction"
  },
  "tool_name": "terminal",
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    "arguments": "{\"command\": \"cd /workspace && python3 -c \\\"from pipeline import import_batch\\nfrom reducer import empty_state\\nfrom checkpoint import dump_state\\nlines = ['{\\\\\\\"id\\\\\\\":\\\\\\\"r1\\\\\\\",\\\\\\\"op\\\\\\\":\\\\\\\"restock\\\\\\\",\\\\\\\"sku\\\\\\\":\\\\\\\"A\\\\\\\",\\\\\\\"qty\\\\\\\":10}']\\ns = import_batch(empty_state(), lines)\\nprint(repr(dump_state(s)))\\\"\"}",
    "origin": "completion"
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  "llm_response_id": "gen-1792416534-5qGs66meF48dSNgJ3vo8",
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  "summary": "terminal: {\"command\": \"cd /workspace && python3 -c \\\"from pipeline import import_batch\\nfrom reducer import empty_state\\nfrom checkpoint import dump_state\\nlines = ['{\\\\\\\"id\\\\\\\":\\\\\\\"r1\\\\\\\",\\\\\\\"op\\\\\\\":\\\\\\\"restock\\\\\\\",\\\\\\\"sku\\\\\\\":\\\\\\\"A\\\\\\\",\\\\\\\"qty\\\\\\\":10}']\\ns = import_batch(empty_state(), lines)\\nprint(repr(dump_state(s)))\\\"\"}",
  "kind": "ActionEvent",
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{
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  "source": "environment",
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      }
    ],
    "is_error": false,
    "command": "cd /workspace && python3 -c \"from pipeline import import_batch\nfrom reducer import empty_state\nfrom checkpoint import dump_state\nlines = ['{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}']\ns = import_batch(empty_state(), lines)\nprint(repr(dump_state(s)))\"",
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    "timeout": false,
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{
  "id": "f9839c55-17ae-4441-be36-89eadaa3078e",
  "timestamp": "2026-10-19T08:29:20.914361",
  "source": "agent",
  "parent_id": "7fcb672f-cf75-4770-91a4-1262fd28e6f3",
  "responses_reasoning_item": null,
  "action": {
    "command": "cd /workspace && python3 -c \"\nfrom pipeline import import_batch, resume\nfrom reducer import empty_state\nfrom checkpoint import dump_state\nlines = [\n '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}',\n '{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":5}',\n '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3],[\\\"B\\\",2]]}',\n '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}',\n '{\\\"id\\\":\\\"v2\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",4]]}',\n]\nunint = import_batch(empty_state(), lines)\nfinal_cp = dump_state(unint)\nallok = True\nfor split in range(0, len(lines)+1):\n    part = import_batch(empty_state(), lines[:split])\n    cp = dump_state(part)\n    restarted = resume(cp, lines[split:])\n    if restarted != final_cp:\n        allok = False\n        print('MISMATCH at split', split)\nprint('restart equiv all splits:', allok)\n\"",
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{
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    "command": "cd /workspace && python3 -c \"\nfrom pipeline import import_batch, resume\nfrom reducer import empty_state\nfrom checkpoint import dump_state\nlines = [\n '{\\\"id\\\":\\\"r1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}',\n '{\\\"id\\\":\\\"r2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":5}',\n '{\\\"id\\\":\\\"v1\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",3],[\\\"B\\\",2]]}',\n '{\\\"id\\\":\\\"c1\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"Q\\\"}',\n '{\\\"id\\\":\\\"v2\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"Q\\\",\\\"lines\\\":[[\\\"A\\\",4]]}',\n]\nunint = import_batch(empty_state(), lines)\nfinal_cp = dump_state(unint)\nallok = True\nfor split in range(0, len(lines)+1):\n    part = import_batch(empty_state(), lines[:split])\n    cp = dump_state(part)\n    restarted = resume(cp, lines[split:])\n    if restarted != final_cp:\n        allok = False\n        print('MISMATCH at split', split)\nprint('restart equiv all splits:', allok)\n\"",
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        "text": "1\timport json\n2\t\n3\t\n4\tdef unique_object(pairs):\n5\t    result = {}\n6\t    for key, value in pairs:\n7\t        if key in result:\n8\t            raise ValueError('duplicate key')\n9\t        result[key] = value\n10\t    return result\n11\t\n12\t\n13\tdef read_json(text):\n14\t    if not isinstance(text, str):\n15\t        raise ValueError('text required')\n16\t    try:\n17\t        return json.loads(text, object_pairs_hook=unique_object)\n18\t    except (TypeError, json.JSONDecodeError) as exc:\n19\t        raise ValueError('invalid JSON') from exc\n20\t\n21\t\n22\tdef string(value):\n23\t    return isinstance(value, str) and bool(value)\n24\t\n25\t\n26\tdef integer(value, minimum):\n27\t    return (isinstance(value, int) and not isinstance(value, bool)\n28\t            and value >= minimum)\n29\t\n30\t\n31\tdef parse_event(line):\n32\t    event = read_json(line)\n33\t    if not isinstance(event, dict) or not string(event.get('id')):\n34\t        raise ValueError('event object and id required')\n35\t    op = event.get('op')\n36\t    fields = {'restock': {'id', 'op', 'sku', 'qty'},\n37\t              'reserve': {'id', 'op', 'request', 'lines'},\n38\t              'cancel': {'id', 'op', 'request'}}\n39\t    if not isinstance(op, str) or op not in fields or set(event) != fields[op]:\n40\t        raise ValueError('operation or fields')\n41\t    if op == 'restock':\n42\t        if not string(event['sku']) or not integer(event['qty'], 1):\n43\t            raise ValueError('restock fields')\n44\t    elif not string(event['request']):\n45\t        raise ValueError('request')\n46\t    if op == 'reserve':\n47\t        if not isinstance(event['lines'], list):\n48\t            raise ValueError('lines')\n49\t        quantities = {}\n50\t        for pair in event['lines']:\n51\t            if not isinstance(pair, list) or len(pair) != 2:\n52\t                raise ValueError('pair')\n53\t            sku, qty = pair\n54\t            if not string(sku) or not integer(qty, 1):\n55\t                raise ValueError('quantity')\n56\t            quantities[sku] = quantities.get(sku, 0) + qty\n57\t        event['lines'] = [[sku, qty] for sku, qty in sorted(quantities.items())]\n58\t    return event"
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        "text": "1\tfrom copy import deepcopy\n2\t\n3\t\n4\tdef empty_state():\n5\t    return {'stock': {}, 'requests': {}, 'seen': {}}\n6\t\n7\t\n8\tdef apply_event(state, event):\n9\t    result = deepcopy(state)\n10\t    event_id = event['id']\n11\t    if event_id in result['seen']:\n12\t        if result['seen'][event_id] != event:\n13\t            raise ValueError('conflicting event id')\n14\t        return result\n15\t    stock, requests = result['stock'], result['requests']\n16\t    if event['op'] == 'restock':\n17\t        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\n18\t    elif event['op'] == 'reserve':\n19\t        request = event['request']\n20\t        lines = dict(event['lines'])\n21\t        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\n22\t            raise ValueError('cannot reserve')\n23\t        for sku, qty in lines.items():\n24\t            stock[sku] -= qty\n25\t        requests[request] = lines\n26\t    else:\n27\t        request = event['request']\n28\t        if request not in requests:\n29\t            raise ValueError('inactive request')\n30\t        for sku, qty in requests[request].items():\n31\t            stock[sku] += qty\n32\t        del requests[request]\n33\t    result['seen'][event_id] = deepcopy(event)\n34\t    return result"
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{
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      {
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        "text": "test_dump_has_exact_format (test_checkpoint.CheckpointTests) ... ok\ntest_equal_states_different_insertion_order_same_text (test_checkpoint.CheckpointTests) ... ok\ntest_load_accepts_surrounding_whitespace (test_checkpoint.CheckpointTests) ... ok\ntest_load_does_not_mutate_input (test_checkpoint.CheckpointTests) ... ok\ntest_load_result_detached (test_checkpoint.CheckpointTests) ... ok\ntest_reject_bad_version (test_checkpoint.CheckpointTests) ... ok\ntest_reject_boolean_quantity_in_stock (test_checkpoint.CheckpointTests) ... ok\ntest_reject_duplicate_keys_in_state (test_checkpoint.CheckpointTests) ... ok\ntest_reject_extra_wrapper_key (test_checkpoint.CheckpointTests) ... ok\ntest_reject_float_quantity_in_requests (test_checkpoint.CheckpointTests) ... ok\ntest_rejects_reordered_reserve_seen (test_checkpoint.CheckpointTests) ... ok\ntest_rejects_unaggregated_reserve_seen (test_checkpoint.CheckpointTests) ... ok\ntest_roundtrip_preserves_state (test_checkpoint.CheckpointTests) ... ok\ntest_cancel (test_codec.ParseEventTests) ... ok\ntest_preserves_strings_exactly (test_codec.ParseEventTests) ... ok\ntest_rejects_boolean_quantity (test_codec.ParseEventTests) ... ok\ntest_rejects_duplicate_keys (test_codec.ParseEventTests) ... ok\ntest_rejects_empty_id (test_codec.ParseEventTests) ... ok\ntest_rejects_extra_field (test_codec.ParseEventTests) ... ok\ntest_rejects_float_quantity (test_codec.ParseEventTests) ... ok\ntest_rejects_malformed_json (test_codec.ParseEventTests) ... ok\ntest_rejects_missing_field (test_codec.ParseEventTests) ... ok\ntest_rejects_non_object (test_codec.ParseEventTests) ... ok\ntest_rejects_non_string (test_codec.ParseEventTests) ... ok\ntest_rejects_reserve_bad_pair (test_codec.ParseEventTests) ... ok\ntest_rejects_reserve_non_list_lines (test_codec.ParseEventTests) ... ok\ntest_rejects_unknown_op (test_codec.ParseEventTests) ... ok\ntest_rejects_zero_or_negative_quantity (test_codec.ParseEventTests) ... ok\ntest_reserve_empty_lines (test_codec.ParseEventTests) ... ok\ntest_reserve_sorts_and_aggregates (test_codec.ParseEventTests) ... ok\ntest_restock (test_codec.ParseEventTests) ... ok\ntest_space_is_nonempty_id (test_codec.ParseEventTests) ... ok\ntest_whitespace_surrounding (test_codec.ParseEventTests) ... ok\ntest_empty_batch_detached_equal (test_importer.ImporterIntegrationTests) ... ok\ntest_end_to_end_workflow (test_importer.ImporterIntegrationTests) ... ok\ntest_failed_batch_leaves_state_unchanged (test_importer.ImporterIntegrationTests) ... ok\ntest_failed_parse_leaves_state_unchanged (test_importer.ImporterIntegrationTests) ... ok\ntest_reordered_split_lines_replay_exact (test_importer.ImporterIntegrationTests) ... ok\ntest_replay_after_restart (test_importer.ImporterIntegrationTests) ... ok\ntest_restart_equivalence (test_importer.ImporterIntegrationTests) ... ok\ntest_cancel_inactive_rejected (test_reducer.ApplyEventTests) ... ok\ntest_cancel_restores_and_removes (test_reducer.ApplyEventTests) ... ok\ntest_conflicting_same_id_raises (test_reducer.ApplyEventTests) ... ok\ntest_empty_reserve_creates_active_request (test_reducer.ApplyEventTests) ... ok\ntest_request_reuse_after_cancel (test_reducer.ApplyEventTests) ... ok\ntest_reserve_deducts (test_reducer.ApplyEventTests) ... ok\ntest_reserve_duplicate_request_rejected (test_reducer.ApplyEventTests) ... ok\ntest_reserve_insufficient_rejected (test_reducer.ApplyEventTests) ... ok\ntest_reserve_unknown_sku_rejected (test_reducer.ApplyEventTests) ... ok\ntest_restock_adds (test_reducer.ApplyEventTests) ... ok\ntest_returned_seen_event_detached (test_reducer.ApplyEventTests) ... ok\ntest_seen_persists_after_cancel (test_reducer.ApplyEventTests) ... ok\ntest_seen_replay_equal_event_no_change (test_reducer.ApplyEventTests) ... ok\n\n----------------------------------------------------------------------\nRan 53 tests in 0.002s\n\nOK\n"
      }
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{
  "id": "52468d03-dd81-4feb-9a97-cc9a262bf5db",
  "timestamp": "2026-10-19T08:30:00.808200",
  "source": "agent",
  "parent_id": "ec937ed8-c40c-45a3-bd30-c161f8e6bad2",
  "responses_reasoning_item": null,
  "action": {
    "message": "Completed repairs to the synthetic durable reservation importer and added regression tests.\n\n## Changed files\n- `/workspace/codec.py`\n- `/workspace/reducer.py`\n- `/workspace/checkpoint.py`\n- `/workspace/test_importer.py`\n- `/workspace/test_codec.py` (new)\n- `/workspace/test_reducer.py` (new)\n- `/workspace/test_checkpoint.py` (new)\n\n`pipeline.py` was already correct and verified unchanged; only the approved files above were modified.\n\n## Defects fixed (integration fixes)\n1. **codec.py**:\n   - `integer()` accepted booleans (bool is a subclass of int); now `not isinstance(value, bool)` rejects boolean quantities.\n   - Reserve duplicate SKU lines used overwrite (`quantities[sku]=qty`) instead of aggregation; now sums (`quantities.get(sku,0)+qty`) per spec.\n2. **reducer.py**:\n   - `apply_event` used `dict(state)` (shallow copy), so nested `stock`/`requests`/`seen` were shared with the caller and got mutated (aliasing violation). Now `deepcopy(state)` yields fully detached results; replay path also returns a detached state.\n   - `cancel` restored stock but never removed the request from `requests`. Now `del requests[request]`, enabling request-ID reuse with a new event ID.\n3. **checkpoint.py**:\n   - `dump_state` wrongly cleared `seen` to `{}`; now dumps the full state (seen persisted, including cancelled request IDs).\n   - `dump_state` used `sort_keys=False`; now `sort_keys=True` with `ensure_ascii=False`, `separators=(',', ':')`, and exactly one final newline, so equal states with different insertion order produce identical checkpoint text.\n\n## Exact command and result\n`cd /workspace && PYTHONDONTWRITEBYTECODE=1 python3 -m unittest -v`\nResult: `Ran 53 tests ... OK`.\n\nAlso ran a probe verifying restart/replay equivalence: stopping after every split point and resuming produces byte-identical final checkpoints to uninterrupted processing (`restart equiv all splits: True`).\n\n## Tests covered (53 total)\n- Malformed/duplicate-key/extra-or-missing-field/non-string/non-object event rejection, string-exact preservation, boolean/float/zero quantities rejected.\n- Reserve sort+aggregation, empty reserve, cancellation restores stock and removes request, request reuse, canonical seen replay without change, conflicting same-ID raises without seen entry, insufficient/unknown stock rejection, seen persists after cancel.\n- Checkpoint exact format (sort_keys, single newline, compact separators), whitespace-tolerant load, boolean/float quantity rejection, bad version, duplicate keys, reordered/unaggregated keep in seen rejected, round-trip preserves all fields, load doesn't mutate input, returned state detached.\n- Integration: end-to-end workflow, empty-batch detachment, failed-batch and failed-parse rollback leaves caller state unchanged, restart equivalence, replay after restart, reordered split-reserve lines replay exactly.\n\n## Remaining uncertainty\nThe external course checker lives outside this workspace and was not accessed. I cannot assert independent hidden-check success; my validation is limited to the README contract as interpreted plus the 53 local tests. All public interfaces (`parse_event`, `empty_state`, `apply_event`, `dump_state`, `load_state`, `import_batch`, `resume`) preserve exact identifiers and signatures.",
    "kind": "FinishAction"
  },
  "tool_name": "finish",
  "tool_call_id": "call_58c071a629924f61831febd7",
  "tool_call": {
    "id": "call_58c071a629924f61831febd7",
    "responses_item_id": null,
    "name": "finish",
    "arguments": "{\"summary\": \"Repaired codec, reducer, checkpoint; pipeline verified; added 53 regression tests, all pass.\", \"message\": \"Completed repairs to the synthetic durable reservation importer and added regression tests.\\n\\n## Changed files\\n- `/workspace/codec.py`\\n- `/workspace/reducer.py`\\n- `/workspace/checkpoint.py`\\n- `/workspace/test_importer.py`\\n- `/workspace/test_codec.py` (new)\\n- `/workspace/test_reducer.py` (new)\\n- `/workspace/test_checkpoint.py` (new)\\n\\n`pipeline.py` was already correct and verified unchanged; only the approved files above were modified.\\n\\n## Defects fixed (integration fixes)\\n1. **codec.py**:\\n   - `integer()` accepted booleans (bool is a subclass of int); now `not isinstance(value, bool)` rejects boolean quantities.\\n   - Reserve duplicate SKU lines used overwrite (`quantities[sku]=qty`) instead of aggregation; now sums (`quantities.get(sku,0)+qty`) per spec.\\n2. **reducer.py**:\\n   - `apply_event` used `dict(state)` (shallow copy), so nested `stock`/`requests`/`seen` were shared with the caller and got mutated (aliasing violation). Now `deepcopy(state)` yields fully detached results; replay path also returns a detached state.\\n   - `cancel` restored stock but never removed the request from `requests`. Now `del requests[request]`, enabling request-ID reuse with a new event ID.\\n3. **checkpoint.py**:\\n   - `dump_state` wrongly cleared `seen` to `{}`; now dumps the full state (seen persisted, including cancelled request IDs).\\n   - `dump_state` used `sort_keys=False`; now `sort_keys=True` with `ensure_ascii=False`, `separators=(',', ':')`, and exactly one final newline, so equal states with different insertion order produce identical checkpoint text.\\n\\n## Exact command and result\\n`cd /workspace && PYTHONDONTWRITEBYTECODE=1 python3 -m unittest -v`\\nResult: `Ran 53 tests ... OK`.\\n\\nAlso ran a probe verifying restart/replay equivalence: stopping after every split point and resuming produces byte-identical final checkpoints to uninterrupted processing (`restart equiv all splits: True`).\\n\\n## Tests covered (53 total)\\n- Malformed/duplicate-key/extra-or-missing-field/non-string/non-object event rejection, string-exact preservation, boolean/float/zero quantities rejected.\\n- Reserve sort+aggregation, empty reserve, cancellation restores stock and removes request, request reuse, canonical seen replay without change, conflicting same-ID raises without seen entry, insufficient/unknown stock rejection, seen persists after cancel.\\n- Checkpoint exact format (sort_keys, single newline, compact separators), whitespace-tolerant load, boolean/float quantity rejection, bad version, duplicate keys, reordered/unaggregated keep in seen rejected, round-trip preserves all fields, load doesn't mutate input, returned state detached.\\n- Integration: end-to-end workflow, empty-batch detachment, failed-batch and failed-parse rollback leaves caller state unchanged, restart equivalence, replay after restart, reordered split-reserve lines replay exactly.\\n\\n## Remaining uncertainty\\nThe external course checker lives outside this workspace and was not accessed. I cannot assert independent hidden-check success; my validation is limited to the README contract as interpreted plus the 53 local tests. All public interfaces (`parse_event`, `empty_state`, `apply_event`, `dump_state`, `load_state`, `import_batch`, `resume`) preserve exact identifiers and signatures.\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792416586-Jq6zB3K3SWbeIGmyw4R2",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "Repaired codec, reducer, checkpoint; pipeline verified; added 53 regression tests, all pass.",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "b6de32c4-f693-4192-bc0a-2a78c7c51bbf",
  "timestamp": "2026-10-19T08:30:00.814985",
  "source": "environment",
  "parent_id": "52468d03-dd81-4feb-9a97-cc9a262bf5db",
  "tool_name": "finish",
  "tool_call_id": "call_58c071a629924f61831febd7",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Completed repairs to the synthetic durable reservation importer and added regression tests.\n\n## Changed files\n- `/workspace/codec.py`\n- `/workspace/reducer.py`\n- `/workspace/checkpoint.py`\n- `/workspace/test_importer.py`\n- `/workspace/test_codec.py` (new)\n- `/workspace/test_reducer.py` (new)\n- `/workspace/test_checkpoint.py` (new)\n\n`pipeline.py` was already correct and verified unchanged; only the approved files above were modified.\n\n## Defects fixed (integration fixes)\n1. **codec.py**:\n   - `integer()` accepted booleans (bool is a subclass of int); now `not isinstance(value, bool)` rejects boolean quantities.\n   - Reserve duplicate SKU lines used overwrite (`quantities[sku]=qty`) instead of aggregation; now sums (`quantities.get(sku,0)+qty`) per spec.\n2. **reducer.py**:\n   - `apply_event` used `dict(state)` (shallow copy), so nested `stock`/`requests`/`seen` were shared with the caller and got mutated (aliasing violation). Now `deepcopy(state)` yields fully detached results; replay path also returns a detached state.\n   - `cancel` restored stock but never removed the request from `requests`. Now `del requests[request]`, enabling request-ID reuse with a new event ID.\n3. **checkpoint.py**:\n   - `dump_state` wrongly cleared `seen` to `{}`; now dumps the full state (seen persisted, including cancelled request IDs).\n   - `dump_state` used `sort_keys=False`; now `sort_keys=True` with `ensure_ascii=False`, `separators=(',', ':')`, and exactly one final newline, so equal states with different insertion order produce identical checkpoint text.\n\n## Exact command and result\n`cd /workspace && PYTHONDONTWRITEBYTECODE=1 python3 -m unittest -v`\nResult: `Ran 53 tests ... OK`.\n\nAlso ran a probe verifying restart/replay equivalence: stopping after every split point and resuming produces byte-identical final checkpoints to uninterrupted processing (`restart equiv all splits: True`).\n\n## Tests covered (53 total)\n- Malformed/duplicate-key/extra-or-missing-field/non-string/non-object event rejection, string-exact preservation, boolean/float/zero quantities rejected.\n- Reserve sort+aggregation, empty reserve, cancellation restores stock and removes request, request reuse, canonical seen replay without change, conflicting same-ID raises without seen entry, insufficient/unknown stock rejection, seen persists after cancel.\n- Checkpoint exact format (sort_keys, single newline, compact separators), whitespace-tolerant load, boolean/float quantity rejection, bad version, duplicate keys, reordered/unaggregated keep in seen rejected, round-trip preserves all fields, load doesn't mutate input, returned state detached.\n- Integration: end-to-end workflow, empty-batch detachment, failed-batch and failed-parse rollback leaves caller state unchanged, restart equivalence, replay after restart, reordered split-reserve lines replay exactly.\n\n## Remaining uncertainty\nThe external course checker lives outside this workspace and was not accessed. I cannot assert independent hidden-check success; my validation is limited to the README contract as interpreted plus the 53 local tests. All public interfaces (`parse_event`, `empty_state`, `apply_event`, `dump_state`, `load_state`, `import_batch`, `resume`) preserve exact identifiers and signatures."
      }
    ],
    "is_error": false,
    "kind": "FinishObservation"
  },
  "action_id": "52468d03-dd81-4feb-9a97-cc9a262bf5db",
  "extended_content": [],
  "kind": "ObservationEvent"
}

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