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Workshop 6 · 6B.3 · Checkpoint worker

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.

36 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.\nReviewer role: Implement and test only checkpoint.py and test_checkpoint.py. Own complete validated versioned canonical checkpoints, persistence of seen IDs and detached round trips. Read the full README; preserve dump_state/load_state interfaces. Do not edit other files or delegate. Report exact tests and dependencies on codec behavior."
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      "description": "Use the tool to think about something. It will not obtain new information or make any changes to the repository, but just log the thought. Use it when complex reasoning or brainstorming is needed.\n\nCommon use cases:\n1. When exploring a repository and discovering the source of a bug, call this tool to brainstorm several unique ways of fixing the bug, and assess which change(s) are likely to be simplest and most effective.\n2. After receiving test results, use this tool to brainstorm ways to fix failing tests.\n3. When planning a complex refactoring, use this tool to outline different approaches and their tradeoffs.\n4. When designing a new feature, use this tool to think through architecture decisions and implementation details.\n5. When debugging a complex issue, use this tool to organize your thoughts and hypotheses.\n\nThe tool simply logs your thought process for better transparency and does not execute any code or make changes.",
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        "text": "You are the checkpoint-worker in a synthetic durable reservation importer exercise. You own EXACTLY two files: /workspace/checkpoint.py and /workspace/test_checkpoint.py. Do not edit any other files. You may add regression tests in test_checkpoint.py.\n\nHere is the COMPLETE acceptance contract (README.md):\n\nA synthetic durable reservation importer. Use Python standard library only.\n\nShared interfaces: 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.\n\nThe exact state shape is:\n- stock: dictionary of nonempty string SKU to nonnegative integer quantity.\n- requests: dictionary of nonempty string request ID to dictionary of nonempty SKU to positive integer quantity. Empty request dictionaries are allowed.\n- seen: dictionary of nonempty string event ID to canonical event dictionary. Each key equals that event's id. A seen record persists after cancellation.\n\nBooleans are never integer quantities. Identifiers may contain whitespace, pipes, backslashes and Unicode; preserve exact content. No Unicode normalization or stripping. Empty strings forbidden; a space alone is nonempty.\n\nCheckpoints:\n- The exact wrapper is {\"version\": 1, \"state\": STATE}.\n- dump_state validates state, then uses json.dumps with ensure_ascii=False, sort_keys=True, separators=(',', ':'), plus exactly one final newline.\n- 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.\n- For 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.\n- Validate all nested state fields. Structural validation is required; reconstructing historical stock or proving seen/request consistency is out of scope.\n- Dumping an invalid state also raises ValueError.\n- Loading/dumping must not mutate input data.\n- Two equal valid states with different dictionary insertion order produce exactly equal checkpoint text.\n- Loading a dumped state preserves all three state fields and their replay behavior, including seen IDs of cancelled requests.\n- Floats and booleans are invalid quantities anywhere in state.\n- dump_state must NOT discard or empty the seen field; it must dump the full state including all seen records.\n- Input state and every nested input object must remain unchanged.\n\nRegression tests needed (add to test_checkpoint.py using unittest):\n- round-trip dump->load preserves all three state fields and replay behavior including seen of cancelled requests\n- exact wrapper text {\"version\":1,\"state\":...} and exact dump format (ensure_ascii=False, sort_keys=True, separators=(',',':'), single trailing newline)\n- reordered dict insertion order gives byte-identical dump text\n- load_state accepts surrounding whitespace\n- rejects: duplicate JSON keys, extra/missing wrapper or state keys, boolean or non-1 version (e.g. 0, 2, True), malformed JSON, invalid field types/quantities\n- rejects invalid seen: unaggregated/reordered reserve lines, seen id mismatch\n- rejects float and boolean quantities in stock/requests/seen anywhere\n- dump_state of invalid state raises ValueError\n- dump/load do not mutate input data\n\nThe starter checkpoint.py may have seeded defects. Inspect it, fix all defects so it satisfies the contract above, and add comprehensive regression tests to test_checkpoint.py. Do not modify public interface names (dump_state, load_state). You may import from codec.py for validation helpers but must ensure bool/floats are rejected as quantities everywhere in state (be careful: bool is a subclass of int).\n\nRun your tests only on checkpoint (e.g. cd /workspace && python3 -m unittest -v). You cannot use external files/network/installations; only the listed modules. Report exactly what you changed and the test command/results."
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        "text": "import 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    state = deepcopy(state)\n    state['seen'] = {}\n    return json.dumps({'version': 1, 'state': state}, ensure_ascii=False,\n                      sort_keys=False, 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"
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        "text": "# Durable reservation importer\n\nThis 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.\n\n## Shared interfaces and state\n\n`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.\n\nThe exact state shape is:\n\n- stock: dictionary of nonempty string SKU to nonnegative integer quantity.\n- requests: dictionary of nonempty string request ID to dictionary of nonempty SKU to positive integer quantity. Empty request dictionaries are allowed.\n- seen: dictionary of nonempty string event ID to canonical event dictionary. Each key equals that event's id. A seen record persists after cancellation.\n\nBooleans 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.\n\n## Events and canonicalization\n\nAccept precisely these object shapes, rejecting extra or missing fields with ValueError:\n\n- `{\"id\": ID, \"op\": \"restock\", \"sku\": SKU, \"qty\": Q}` where Q is a positive integer.\n- `{\"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.\n- `{\"id\": ID, \"op\": \"cancel\", \"request\": REQUEST}`.\n\nIDs, 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.\n\n## State transitions and identity\n\nCheck 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.\n\nRestock 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.\n\n## Checkpoints\n\nThe 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.\n\nFor 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.\n\n## Integration and rollback\n\npipeline 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.\n\nA 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.\n\n## Verification\n\nThe 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.\n"
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        "text": "import 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 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"
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  "source": "environment",
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  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "from copy import deepcopy\n\n\ndef empty_state():\n    return {'stock': {}, 'requests': {}, 'seen': {}}\n\n\ndef apply_event(state, event):\n    result = dict(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"
      }
    ],
    "is_error": false,
    "command": "cat /workspace/reducer.py",
    "exit_code": 0,
    "timeout": false,
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    "kind": "TerminalObservation"
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  "source": "agent",
  "parent_id": "74f51bdc-542b-45b1-adf0-cb09668092d1",
  "responses_reasoning_item": null,
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{
  "id": "96e11145-6f55-4b27-9679-9016671d5315",
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  "source": "environment",
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  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "cat: ./test_checkpoint.py: No such file or directory\n"
      }
    ],
    "is_error": false,
    "command": "cat /workspace/test_checkpoint.py",
    "exit_code": 1,
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  "source": "agent",
  "parent_id": "96e11145-6f55-4b27-9679-9016671d5315",
  "responses_reasoning_item": null,
  "action": {
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    "name": "terminal",
    "arguments": "{\"command\": \"ls /workspace\"}",
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{
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  "timestamp": "2026-10-19T08:45:04.286078",
  "source": "environment",
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  "tool_name": "terminal",
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  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "README.md\ncheckpoint.py\ncodec.py\npipeline.py\nreducer.py\ntest_importer.py\n"
      }
    ],
    "is_error": false,
    "command": "ls /workspace",
    "exit_code": 0,
    "timeout": false,
    "metadata": {
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{
  "id": "feb6c8a8-33f6-4c15-a16d-4cc340f561dc",
  "timestamp": "2026-10-19T08:45:13.783611",
  "source": "agent",
  "parent_id": "054994e2-8172-48c5-8982-f3c025645a89",
  "responses_reasoning_item": null,
  "action": {
    "command": "create",
    "path": "/workspace/checkpoint.py",
    "file_text": "import json\nfrom copy import deepcopy\nfrom codec import parse_event, read_json, string, integer\n\n\ndef _validate_seen_event_quantities(event):\n    \"\"\"Reject bool/float quantities inside a canonical seen event.\n\n    Booleans are a subclass of int, so codec.integer alone would accept them;\n    floats fail isinstance(x, int) but are validated here for completeness.\n    \"\"\"\n    op = event.get('op')\n    if op == 'restock':\n        if isinstance(event['qty'], bool):\n            raise ValueError('boolean quantity')\n    elif op == 'reserve':\n        for pair in event['lines']:\n            if isinstance(pair, (list, tuple)) and len(pair) == 2:\n                sku, qty = pair\n                if not string(sku) or isinstance(qty, bool) or not integer(qty, 1):\n                    raise ValueError('reserve line quantity')\n            else:\n                raise ValueError('reserve line shape')\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 isinstance(qty, bool) 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 isinstance(qty, bool) 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        if event.get('id') != event_id:\n            raise ValueError('seen id mismatch')\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:\n            raise ValueError('noncanonical seen event')\n        _validate_seen_event_quantities(event)\n    return state\n\n\ndef dump_state(state):\n    validate(state)\n    state = deepcopy(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']))",
    "old_str": null,
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    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_5360eab88aa242da808ced2e",
  "tool_call": {
    "id": "call_5360eab88aa242da808ced2e",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"create\", \"path\": \"/workspace/checkpoint.py\", \"file_text\": \"import json\\nfrom copy import deepcopy\\nfrom codec import parse_event, read_json, string, integer\\n\\n\\ndef _validate_seen_event_quantities(event):\\n    \\\"\\\"\\\"Reject bool/float quantities inside a canonical seen event.\\n\\n    Booleans are a subclass of int, so codec.integer alone would accept them;\\n    floats fail isinstance(x, int) but are validated here for completeness.\\n    \\\"\\\"\\\"\\n    op = event.get('op')\\n    if op == 'restock':\\n        if isinstance(event['qty'], bool):\\n            raise ValueError('boolean quantity')\\n    elif op == 'reserve':\\n        for pair in event['lines']:\\n            if isinstance(pair, (list, tuple)) and len(pair) == 2:\\n                sku, qty = pair\\n                if not string(sku) or isinstance(qty, bool) or not integer(qty, 1):\\n                    raise ValueError('reserve line quantity')\\n            else:\\n                raise ValueError('reserve line shape')\\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 isinstance(qty, bool) 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 isinstance(qty, bool) 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        if event.get('id') != event_id:\\n            raise ValueError('seen id mismatch')\\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:\\n            raise ValueError('noncanonical seen event')\\n        _validate_seen_event_quantities(event)\\n    return state\\n\\n\\ndef dump_state(state):\\n    validate(state)\\n    state = deepcopy(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']))\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792417504-R11hnlVr0nwpTaVgdTCi",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"create\", \"path\": \"/workspace/checkpoint.py\", \"file_text\": \"import json\\nfrom copy import deepcopy\\nfrom codec import parse_event, read_json, string, integer\\n\\n\\ndef _validate_seen_event_quantities(event):\\n    \\\"\\\"\\\"Reject bool/float quantities inside a canonical seen event.\\n\\n    Booleans are a subclass of int, so codec.integer alone would accept them;\\n    floats fail isinstance(x, int) but are validated here for completeness.\\n    \\\"\\\"\\\"\\n    op = event.get('op')\\n    if op == 'restock':\\n        if isinstance(event['qty'], bool):\\n            raise ValueError('boolean quantity')\\n    elif op == 'reserve':\\n        for pair in event['lines']:\\n            if isinstance(pair, (list, tuple)) and len(pair) == 2:\\n                sku, qty = pair\\n                if not string(sku) or isinstance(qty, bool) or not integer(qty, 1):\\n                    raise ValueError('reserve line quantity')\\n            else:\\n                raise ValueError('reserve line shape')\\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 isinstance(qty, bool) 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 isinstance(qty, bool) 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        if event.get('id') != event_id:\\n            raise ValueError('seen id mismatch')\\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:\\n            raise ValueError('noncanonical seen event')\\n        _validate_seen_event_quantities(event)\\n    return state\\n\\n\\ndef dump_state(state):\\n    validate(state)\\n    state = deepcopy(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']))\"}",
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{
  "id": "a4b74348-19eb-4f7c-b827-b8526ad4a32d",
  "timestamp": "2026-10-19T08:45:13.890405",
  "source": "environment",
  "parent_id": "feb6c8a8-33f6-4c15-a16d-4cc340f561dc",
  "tool_name": "file_editor",
  "tool_call_id": "call_5360eab88aa242da808ced2e",
  "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_seen_event_quantities(event):\n    \"\"\"Reject bool/float quantities inside a canonical seen event.\n\n    Booleans are a subclass of int, so codec.integer alone would accept them;\n    floats fail isinstance(x, int) but are validated here for completeness.\n    \"\"\"\n    op = event.get('op')\n    if op == 'restock':\n        if isinstance(event['qty'], bool):\n            raise ValueError('boolean quantity')\n    elif op == 'reserve':\n        for pair in event['lines']:\n            if isinstance(pair, (list, tuple)) and len(pair) == 2:\n                sku, qty = pair\n                if not string(sku) or isinstance(qty, bool) or not integer(qty, 1):\n                    raise ValueError('reserve line quantity')\n            else:\n                raise ValueError('reserve line shape')\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 isinstance(qty, bool) 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 isinstance(qty, bool) 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        if event.get('id') != event_id:\n            raise ValueError('seen id mismatch')\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:\n            raise ValueError('noncanonical seen event')\n        _validate_seen_event_quantities(event)\n    return state\n\n\ndef dump_state(state):\n    validate(state)\n    state = deepcopy(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']))"
      }
    ],
    "is_error": false,
    "command": "create",
    "path": "/workspace/checkpoint.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
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{
  "id": "54c60762-2ef0-4bcf-82c8-6af179283d24",
  "timestamp": "2026-10-19T08:46:01.155818",
  "source": "agent",
  "parent_id": "a4b74348-19eb-4f7c-b827-b8526ad4a32d",
  "responses_reasoning_item": null,
  "action": {
    "command": "create",
    "path": "/workspace/test_checkpoint.py",
    "file_text": "import json\nimport unittest\nfrom copy import deepcopy\n\nfrom checkpoint import dump_state, load_state, validate\nfrom reducer import empty_state, apply_event\nfrom codec import parse_event\n\n\ndef build_state(stock=None, requests=None, seen=None):\n    state = empty_state()\n    if stock is not None:\n        state['stock'] = stock\n    if requests is not None:\n        state['requests'] = requests\n    if seen is not None:\n        state['seen'] = seen\n    return state\n\n\nclass CheckpointDumpRoundTripTest(unittest.TestCase):\n    def make_workflow_state(self):\n        state = empty_state()\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}'))\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":5}'))\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e3\",\"op\":\"reserve\",\"request\":\"r1\",\"lines\":[[\"A\",3],[\"B\",2]]}'))\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e4\",\"op\":\"cancel\",\"request\":\"r1\"}'))\n        # record is retained after cancellation\n        return state\n\n    def test_round_trip_preserves_fields_and_replay(self):\n        state = self.make_workflow_state()\n        text = dump_state(state)\n        loaded = load_state(text)\n        self.assertEqual(loaded['stock'], state['stock'])\n        self.assertEqual(loaded['requests'], state['requests'])\n        self.assertEqual(loaded['seen'], state['seen'])\n        # cancelled request replayed with fresh id still works\n        loaded2 = apply_event(loaded, parse_event(\n            '{\"id\":\"e5\",\"op\":\"reserve\",\"request\":\"r1\",\"lines\":[[\"A\",1],[\"B\",1]]}'))\n        self.assertIn('r1', loaded2['requests'])\n        # replay of an old event is a no-op (seen precond)\n        replay = apply_event(loaded, parse_event(\n            '{\"id\":\"e1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}'))\n        self.assertEqual(replay['stock'], loaded['stock'])\n\n    def test_exact_dump_format(self):\n        state = empty_state()\n        text = dump_state(state)\n        expected = '{\"version\":1,\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}}\\n'\n        self.assertEqual(text, expected)\n        self.assertTrue(text.endswith('\\n'))\n        self.assertEqual(text.count('\\n'), 1)\n\n    def test_insertion_order_byte_identical(self):\n        state1 = {'stock': {'a': 1, 'b': 2},\n                  'requests': {'r': {'a': 1}},\n                  'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'a', 'qty': 1}}}\n        state2 = {'requests': {},\n                  'seen': {'e': {'qty': 1, 'sku': 'a', 'op': 'restock', 'id': 'e'}},\n                  'stock': {'b': 2, 'a': 1}}\n        # note: seen event is inserted with shuffled key order too; it must\n        # still be canonical (sort_keys applies to dump but equality compares\n        # dicts) so use an ordering that survives json sorting.\n        self.assertEqual(dump_state(state1), dump_state(state2))\n\n    def test_load_accepts_surrounding_whitespace(self):\n        state = self.make_workflow_state()\n        text = dump_state(state)\n        for padded in ('\\n' + text, '  ' + text + '  \\n', '\\t' + text):\n            self.assertEqual(load_state(padded), state)\n\n    def test_load_returns_detached_data(self):\n        text = dump_state(self.make_workflow_state())\n        loaded = load_state(text)\n        loaded['stock']['A'] = 999\n        loaded['seen']['e1']['qty'] = 999\n        self.assertEqual(load_state(text)['stock']['A'], 7)  # 10-3 from e3\n        self.assertEqual(load_state(text)['seen']['e1']['qty'], 10)\n\n    def test_dump_does_not_mutate_input(self):\n        state = self.make_workflow_state()\n        snapshot = deepcopy(state)\n        dump_state(state)\n        self.assertEqual(state, snapshot)\n        # nested seen event untouched\n        self.assertEqual(state['seen'], snapshot['seen'])\n\n    def test_load_does_not_mutate_text(self):\n        text = dump_state(self.make_workflow_state())\n        original = text\n        load_state(text)\n        self.assertEqual(text, original)\n\n\nclass CheckpointRejectTest(unittest.TestCase):\n    def assertRejected(self, state, text=None):\n        with self.assertRaises(ValueError):\n            dump_state(state)\n        if text is not None:\n            with self.assertRaises(ValueError):\n                load_state(text)\n\n    def test_duplicate_wrapper_key(self):\n        text = '{\"version\":1,\"version\":2,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_duplicate_nested_key(self):\n        text = ('{\"version\":1,\"state\":{\"stock\":{\"a\":1,\"a\":2},'\n                '\"requests\":{},\"seen\":{}}}')\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_extra_wrapper_key(self):\n        text = '{\"version\":1,\"state\":{},\"extra\":true}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_missing_wrapper_key(self):\n        text = '{\"version\":1}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_missing_state_field(self):\n        text = '{\"version\":1,\"state\":{\"stock\":{},\"requests\":{}}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_extra_state_field(self):\n        text = ('{\"version\":1,\"state\":{\"stock\":{},\"requests\":{},\"seen\":{},'\n                '\"extra\":1}}')\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_zero(self):\n        text = '{\"version\":0,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_two(self):\n        text = '{\"version\":2,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_boolean(self):\n        text = '{\"version\":true,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_string(self):\n        text = '{\"version\":\"1\",\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_malformed_json(self):\n        text = '{\"version\":1,\"state\":'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_state_not_dict(self):\n        text = '{\"version\":1,\"state\":[1,2,3]}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_stock_invalid_quantity_float(self):\n        self.assertRejected({'stock': {'a': 1.5}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_quantity_boolean(self):\n        self.assertRejected({'stock': {'a': True}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_quantity_negative(self):\n        self.assertRejected({'stock': {'a': -1}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_sku_empty(self):\n        self.assertRejected({'stock': {'': 1}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_sku_boolean(self):\n        self.assertRejected({'stock': {True: 1}, 'requests': {}, 'seen': {}})\n\n    def test_request_invalid_quantity_float(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': 0.5}},\n                             'seen': {}})\n\n    def test_request_invalid_quantity_boolean(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': True}},\n                             'seen': {}})\n\n    def test_request_invalid_quantity_zero(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': 0}},\n                             'seen': {}})\n\n    def test_request_empty_id(self):\n        self.assertRejected({'stock': {}, 'requests': {'': {}}, 'seen': {}})\n\n    def test_request_lines_not_dict(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': [('a', 1)]},\n                             'seen': {}})\n\n    def test_seen_unaggregated_reserve(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\n                                'lines': [['A', 1], ['A', 2]]}}}\n        self.assertRejected(state)\n\n    def test_seen_reordered_reserve(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\n                                'lines': [['B', 1], ['A', 1]]}}}\n        self.assertRejected(state)\n\n    def test_seen_id_mismatch(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'wrong_id': {'id': 'e1', 'op': 'restock',\n                                       'sku': 'A', 'qty': 1}}}\n        self.assertRejected(state)\n\n    def test_seen_restock_boolean_qty(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\n                                'qty': True}}}\n        self.assertRejected(state)\n\n    def test_seen_restock_float_qty(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\n                                'qty': 1.5}}}\n        self.assertRejected(state)\n\n    def test_seen_reserve_boolean_qty(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\n                                'lines': [['A', True]]}}}\n        self.assertRejected(state)\n\n    def test_seen_unknown_op(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'bogus'}}}\n        self.assertRejected(state)\n\n    def test_seen_missing_id(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'op': 'restock', 'sku': 'A', 'qty': 1}}}\n        self.assertRejected(state)\n\n    def test_seen_extra_field(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\n                                'qty': 1, 'extra': 1}}}\n        self.assertRejected(state)\n\n    def test_dump_invalid_state_raises(self):\n        with self.assertRaises(ValueError):\n            dump_state({'stock': {'a': True}, 'requests': {}, 'seen': {}})\n        with self.assertRaises(ValueError):\n            dump_state({'stock': {}, 'requests': {}, 'seen': {}} if False\n                       else {'stock': {}, 'requests': {}, 'seen': 'x'})\n\n\nclass CheckpointConsistencyTest(unittest.TestCase):\n    def test_loaded_state_verified_equal(self):\n        state = apply_event(\n            apply_event(empty_state(), parse_event(\n                '{\"id\":\"e1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":4}')),\n            parse_event('{\"id\":\"e2\",\"op\":\"reserve\",\"request\":\"r\",\"lines\":[[\"A\",1]]}'))\n        loaded = load_state(dump_state(state))\n        self.assertEqual(loaded, state)\n\n    def test_space_skus_valid_and_preserved(self):\n        state = {'stock': {' pi pe\\\\|': 3}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock',\n                                'sku': ' pi pe\\\\|', 'qty': 3}}}\n        text = dump_state(state)\n        loaded = load_state(text)\n        self.assertEqual(loaded['stock'][' pi pe\\\\|'], 3)\n        self.assertEqual(loaded['seen']['e']['sku'], ' pi pe\\\\|')\n\n    def test_unicode_preserved(self):\n        state = {'stock': {'sesquiél': 1}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock',\n                                'sku': 'sesquiél', 'qty': 1}}}\n        text = dump_state(state)\n        self.assertIn('sesquiél', text)\n        self.assertEqual(load_state(text), state)\n\n    def test_empty_request_allowed(self):\n        state = {'stock': {}, 'requests': {'r': {}}, 'seen': {}}\n        self.assertEqual(load_state(dump_state(state)), state)\n\n    def test_canonical_dump_of_seen_restock(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'qty': 1, 'sku': 'A', 'op': 'restock',\n                                'id': 'e'}}}\n        text = dump_state(state)\n        # sort_keys=True sorts nested keys too\n        self.assertIn('\"state\":{\"requests\":{},\"seen\":{\"e\":{\"id\":\"e\",'\n                      '\"op\":\"restock\",\"qty\":1,\"sku\":\"A\"}},\"stock\":{}}',\n                      text)\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_50493ed4c1814239b180cead",
  "tool_call": {
    "id": "call_50493ed4c1814239b180cead",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"create\", \"path\": \"/workspace/test_checkpoint.py\", \"file_text\": \"import json\\nimport unittest\\nfrom copy import deepcopy\\n\\nfrom checkpoint import dump_state, load_state, validate\\nfrom reducer import empty_state, apply_event\\nfrom codec import parse_event\\n\\n\\ndef build_state(stock=None, requests=None, seen=None):\\n    state = empty_state()\\n    if stock is not None:\\n        state['stock'] = stock\\n    if requests is not None:\\n        state['requests'] = requests\\n    if seen is not None:\\n        state['seen'] = seen\\n    return state\\n\\n\\nclass CheckpointDumpRoundTripTest(unittest.TestCase):\\n    def make_workflow_state(self):\\n        state = empty_state()\\n        state = apply_event(state, parse_event(\\n            '{\\\"id\\\":\\\"e1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}'))\\n        state = apply_event(state, parse_event(\\n            '{\\\"id\\\":\\\"e2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":5}'))\\n        state = apply_event(state, parse_event(\\n            '{\\\"id\\\":\\\"e3\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"r1\\\",\\\"lines\\\":[[\\\"A\\\",3],[\\\"B\\\",2]]}'))\\n        state = apply_event(state, parse_event(\\n            '{\\\"id\\\":\\\"e4\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"r1\\\"}'))\\n        # record is retained after cancellation\\n        return state\\n\\n    def test_round_trip_preserves_fields_and_replay(self):\\n        state = self.make_workflow_state()\\n        text = dump_state(state)\\n        loaded = load_state(text)\\n        self.assertEqual(loaded['stock'], state['stock'])\\n        self.assertEqual(loaded['requests'], state['requests'])\\n        self.assertEqual(loaded['seen'], state['seen'])\\n        # cancelled request replayed with fresh id still works\\n        loaded2 = apply_event(loaded, parse_event(\\n            '{\\\"id\\\":\\\"e5\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"r1\\\",\\\"lines\\\":[[\\\"A\\\",1],[\\\"B\\\",1]]}'))\\n        self.assertIn('r1', loaded2['requests'])\\n        # replay of an old event is a no-op (seen precond)\\n        replay = apply_event(loaded, parse_event(\\n            '{\\\"id\\\":\\\"e1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}'))\\n        self.assertEqual(replay['stock'], loaded['stock'])\\n\\n    def test_exact_dump_format(self):\\n        state = empty_state()\\n        text = dump_state(state)\\n        expected = '{\\\"version\\\":1,\\\"state\\\":{\\\"requests\\\":{},\\\"seen\\\":{},\\\"stock\\\":{}}}\\\\n'\\n        self.assertEqual(text, expected)\\n        self.assertTrue(text.endswith('\\\\n'))\\n        self.assertEqual(text.count('\\\\n'), 1)\\n\\n    def test_insertion_order_byte_identical(self):\\n        state1 = {'stock': {'a': 1, 'b': 2},\\n                  'requests': {'r': {'a': 1}},\\n                  'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'a', 'qty': 1}}}\\n        state2 = {'requests': {},\\n                  'seen': {'e': {'qty': 1, 'sku': 'a', 'op': 'restock', 'id': 'e'}},\\n                  'stock': {'b': 2, 'a': 1}}\\n        # note: seen event is inserted with shuffled key order too; it must\\n        # still be canonical (sort_keys applies to dump but equality compares\\n        # dicts) so use an ordering that survives json sorting.\\n        self.assertEqual(dump_state(state1), dump_state(state2))\\n\\n    def test_load_accepts_surrounding_whitespace(self):\\n        state = self.make_workflow_state()\\n        text = dump_state(state)\\n        for padded in ('\\\\n' + text, '  ' + text + '  \\\\n', '\\\\t' + text):\\n            self.assertEqual(load_state(padded), state)\\n\\n    def test_load_returns_detached_data(self):\\n        text = dump_state(self.make_workflow_state())\\n        loaded = load_state(text)\\n        loaded['stock']['A'] = 999\\n        loaded['seen']['e1']['qty'] = 999\\n        self.assertEqual(load_state(text)['stock']['A'], 7)  # 10-3 from e3\\n        self.assertEqual(load_state(text)['seen']['e1']['qty'], 10)\\n\\n    def test_dump_does_not_mutate_input(self):\\n        state = self.make_workflow_state()\\n        snapshot = deepcopy(state)\\n        dump_state(state)\\n        self.assertEqual(state, snapshot)\\n        # nested seen event untouched\\n        self.assertEqual(state['seen'], snapshot['seen'])\\n\\n    def test_load_does_not_mutate_text(self):\\n        text = dump_state(self.make_workflow_state())\\n        original = text\\n        load_state(text)\\n        self.assertEqual(text, original)\\n\\n\\nclass CheckpointRejectTest(unittest.TestCase):\\n    def assertRejected(self, state, text=None):\\n        with self.assertRaises(ValueError):\\n            dump_state(state)\\n        if text is not None:\\n            with self.assertRaises(ValueError):\\n                load_state(text)\\n\\n    def test_duplicate_wrapper_key(self):\\n        text = '{\\\"version\\\":1,\\\"version\\\":2,\\\"state\\\":{}}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_duplicate_nested_key(self):\\n        text = ('{\\\"version\\\":1,\\\"state\\\":{\\\"stock\\\":{\\\"a\\\":1,\\\"a\\\":2},'\\n                '\\\"requests\\\":{},\\\"seen\\\":{}}}')\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_extra_wrapper_key(self):\\n        text = '{\\\"version\\\":1,\\\"state\\\":{},\\\"extra\\\":true}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_missing_wrapper_key(self):\\n        text = '{\\\"version\\\":1}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_missing_state_field(self):\\n        text = '{\\\"version\\\":1,\\\"state\\\":{\\\"stock\\\":{},\\\"requests\\\":{}}}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_extra_state_field(self):\\n        text = ('{\\\"version\\\":1,\\\"state\\\":{\\\"stock\\\":{},\\\"requests\\\":{},\\\"seen\\\":{},'\\n                '\\\"extra\\\":1}}')\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_version_zero(self):\\n        text = '{\\\"version\\\":0,\\\"state\\\":{}}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_version_two(self):\\n        text = '{\\\"version\\\":2,\\\"state\\\":{}}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_version_boolean(self):\\n        text = '{\\\"version\\\":true,\\\"state\\\":{}}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_version_string(self):\\n        text = '{\\\"version\\\":\\\"1\\\",\\\"state\\\":{}}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_malformed_json(self):\\n        text = '{\\\"version\\\":1,\\\"state\\\":'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_state_not_dict(self):\\n        text = '{\\\"version\\\":1,\\\"state\\\":[1,2,3]}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_stock_invalid_quantity_float(self):\\n        self.assertRejected({'stock': {'a': 1.5}, 'requests': {}, 'seen': {}})\\n\\n    def test_stock_invalid_quantity_boolean(self):\\n        self.assertRejected({'stock': {'a': True}, 'requests': {}, 'seen': {}})\\n\\n    def test_stock_invalid_quantity_negative(self):\\n        self.assertRejected({'stock': {'a': -1}, 'requests': {}, 'seen': {}})\\n\\n    def test_stock_invalid_sku_empty(self):\\n        self.assertRejected({'stock': {'': 1}, 'requests': {}, 'seen': {}})\\n\\n    def test_stock_invalid_sku_boolean(self):\\n        self.assertRejected({'stock': {True: 1}, 'requests': {}, 'seen': {}})\\n\\n    def test_request_invalid_quantity_float(self):\\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': 0.5}},\\n                             'seen': {}})\\n\\n    def test_request_invalid_quantity_boolean(self):\\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': True}},\\n                             'seen': {}})\\n\\n    def test_request_invalid_quantity_zero(self):\\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': 0}},\\n                             'seen': {}})\\n\\n    def test_request_empty_id(self):\\n        self.assertRejected({'stock': {}, 'requests': {'': {}}, 'seen': {}})\\n\\n    def test_request_lines_not_dict(self):\\n        self.assertRejected({'stock': {}, 'requests': {'r': [('a', 1)]},\\n                             'seen': {}})\\n\\n    def test_seen_unaggregated_reserve(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\\n                                'lines': [['A', 1], ['A', 2]]}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_reordered_reserve(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\\n                                'lines': [['B', 1], ['A', 1]]}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_id_mismatch(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'wrong_id': {'id': 'e1', 'op': 'restock',\\n                                       'sku': 'A', 'qty': 1}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_restock_boolean_qty(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\\n                                'qty': True}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_restock_float_qty(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\\n                                'qty': 1.5}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_reserve_boolean_qty(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\\n                                'lines': [['A', True]]}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_unknown_op(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'bogus'}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_missing_id(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'op': 'restock', 'sku': 'A', 'qty': 1}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_extra_field(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\\n                                'qty': 1, 'extra': 1}}}\\n        self.assertRejected(state)\\n\\n    def test_dump_invalid_state_raises(self):\\n        with self.assertRaises(ValueError):\\n            dump_state({'stock': {'a': True}, 'requests': {}, 'seen': {}})\\n        with self.assertRaises(ValueError):\\n            dump_state({'stock': {}, 'requests': {}, 'seen': {}} if False\\n                       else {'stock': {}, 'requests': {}, 'seen': 'x'})\\n\\n\\nclass CheckpointConsistencyTest(unittest.TestCase):\\n    def test_loaded_state_verified_equal(self):\\n        state = apply_event(\\n            apply_event(empty_state(), parse_event(\\n                '{\\\"id\\\":\\\"e1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":4}')),\\n            parse_event('{\\\"id\\\":\\\"e2\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"r\\\",\\\"lines\\\":[[\\\"A\\\",1]]}'))\\n        loaded = load_state(dump_state(state))\\n        self.assertEqual(loaded, state)\\n\\n    def test_space_skus_valid_and_preserved(self):\\n        state = {'stock': {' pi pe\\\\\\\\|': 3}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'restock',\\n                                'sku': ' pi pe\\\\\\\\|', 'qty': 3}}}\\n        text = dump_state(state)\\n        loaded = load_state(text)\\n        self.assertEqual(loaded['stock'][' pi pe\\\\\\\\|'], 3)\\n        self.assertEqual(loaded['seen']['e']['sku'], ' pi pe\\\\\\\\|')\\n\\n    def test_unicode_preserved(self):\\n        state = {'stock': {'sesqui\\u00e9l': 1}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'restock',\\n                                'sku': 'sesqui\\u00e9l', 'qty': 1}}}\\n        text = dump_state(state)\\n        self.assertIn('sesqui\\u00e9l', text)\\n        self.assertEqual(load_state(text), state)\\n\\n    def test_empty_request_allowed(self):\\n        state = {'stock': {}, 'requests': {'r': {}}, 'seen': {}}\\n        self.assertEqual(load_state(dump_state(state)), state)\\n\\n    def test_canonical_dump_of_seen_restock(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'qty': 1, 'sku': 'A', 'op': 'restock',\\n                                'id': 'e'}}}\\n        text = dump_state(state)\\n        # sort_keys=True sorts nested keys too\\n        self.assertIn('\\\"state\\\":{\\\"requests\\\":{},\\\"seen\\\":{\\\"e\\\":{\\\"id\\\":\\\"e\\\",'\\n                      '\\\"op\\\":\\\"restock\\\",\\\"qty\\\":1,\\\"sku\\\":\\\"A\\\"}},\\\"stock\\\":{}}',\\n                      text)\\n\\n\\nif __name__ == '__main__':\\n    unittest.main()\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792417514-X66woI55Iyj3BzuDTqRs",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"create\", \"path\": \"/workspace/test_checkpoint.py\", \"file_text\": \"import json\\nimport unittest\\nfrom copy import deepcopy\\n\\nfrom checkpoint import dump_state, load_state, validate\\nfrom reducer import empty_state, apply_event\\nfrom codec import parse_event\\n\\n\\ndef build_state(stock=None, requests=None, seen=None):\\n    state = empty_state()\\n    if stock is not None:\\n        state['stock'] = stock\\n    if requests is not None:\\n        state['requests'] = requests\\n    if seen is not None:\\n        state['seen'] = seen\\n    return state\\n\\n\\nclass CheckpointDumpRoundTripTest(unittest.TestCase):\\n    def make_workflow_state(self):\\n        state = empty_state()\\n        state = apply_event(state, parse_event(\\n            '{\\\"id\\\":\\\"e1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}'))\\n        state = apply_event(state, parse_event(\\n            '{\\\"id\\\":\\\"e2\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"B\\\",\\\"qty\\\":5}'))\\n        state = apply_event(state, parse_event(\\n            '{\\\"id\\\":\\\"e3\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"r1\\\",\\\"lines\\\":[[\\\"A\\\",3],[\\\"B\\\",2]]}'))\\n        state = apply_event(state, parse_event(\\n            '{\\\"id\\\":\\\"e4\\\",\\\"op\\\":\\\"cancel\\\",\\\"request\\\":\\\"r1\\\"}'))\\n        # record is retained after cancellation\\n        return state\\n\\n    def test_round_trip_preserves_fields_and_replay(self):\\n        state = self.make_workflow_state()\\n        text = dump_state(state)\\n        loaded = load_state(text)\\n        self.assertEqual(loaded['stock'], state['stock'])\\n        self.assertEqual(loaded['requests'], state['requests'])\\n        self.assertEqual(loaded['seen'], state['seen'])\\n        # cancelled request replayed with fresh id still works\\n        loaded2 = apply_event(loaded, parse_event(\\n            '{\\\"id\\\":\\\"e5\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"r1\\\",\\\"lines\\\":[[\\\"A\\\",1],[\\\"B\\\",1]]}'))\\n        self.assertIn('r1', loaded2['requests'])\\n        # replay of an old event is a no-op (seen precond)\\n        replay = apply_event(loaded, parse_event(\\n            '{\\\"id\\\":\\\"e1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":10}'))\\n        self.assertEqual(replay['stock'], loaded['stock'])\\n\\n    def test_exact_dump_format(self):\\n        state = empty_state()\\n        text = dump_state(state)\\n        expected = '{\\\"version\\\":1,\\\"state\\\":{\\\"requests\\\":{},\\\"seen\\\":{},\\\"stock\\\":{}}}\\\\n'\\n        self.assertEqual(text, expected)\\n        self.assertTrue(text.endswith('\\\\n'))\\n        self.assertEqual(text.count('\\\\n'), 1)\\n\\n    def test_insertion_order_byte_identical(self):\\n        state1 = {'stock': {'a': 1, 'b': 2},\\n                  'requests': {'r': {'a': 1}},\\n                  'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'a', 'qty': 1}}}\\n        state2 = {'requests': {},\\n                  'seen': {'e': {'qty': 1, 'sku': 'a', 'op': 'restock', 'id': 'e'}},\\n                  'stock': {'b': 2, 'a': 1}}\\n        # note: seen event is inserted with shuffled key order too; it must\\n        # still be canonical (sort_keys applies to dump but equality compares\\n        # dicts) so use an ordering that survives json sorting.\\n        self.assertEqual(dump_state(state1), dump_state(state2))\\n\\n    def test_load_accepts_surrounding_whitespace(self):\\n        state = self.make_workflow_state()\\n        text = dump_state(state)\\n        for padded in ('\\\\n' + text, '  ' + text + '  \\\\n', '\\\\t' + text):\\n            self.assertEqual(load_state(padded), state)\\n\\n    def test_load_returns_detached_data(self):\\n        text = dump_state(self.make_workflow_state())\\n        loaded = load_state(text)\\n        loaded['stock']['A'] = 999\\n        loaded['seen']['e1']['qty'] = 999\\n        self.assertEqual(load_state(text)['stock']['A'], 7)  # 10-3 from e3\\n        self.assertEqual(load_state(text)['seen']['e1']['qty'], 10)\\n\\n    def test_dump_does_not_mutate_input(self):\\n        state = self.make_workflow_state()\\n        snapshot = deepcopy(state)\\n        dump_state(state)\\n        self.assertEqual(state, snapshot)\\n        # nested seen event untouched\\n        self.assertEqual(state['seen'], snapshot['seen'])\\n\\n    def test_load_does_not_mutate_text(self):\\n        text = dump_state(self.make_workflow_state())\\n        original = text\\n        load_state(text)\\n        self.assertEqual(text, original)\\n\\n\\nclass CheckpointRejectTest(unittest.TestCase):\\n    def assertRejected(self, state, text=None):\\n        with self.assertRaises(ValueError):\\n            dump_state(state)\\n        if text is not None:\\n            with self.assertRaises(ValueError):\\n                load_state(text)\\n\\n    def test_duplicate_wrapper_key(self):\\n        text = '{\\\"version\\\":1,\\\"version\\\":2,\\\"state\\\":{}}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_duplicate_nested_key(self):\\n        text = ('{\\\"version\\\":1,\\\"state\\\":{\\\"stock\\\":{\\\"a\\\":1,\\\"a\\\":2},'\\n                '\\\"requests\\\":{},\\\"seen\\\":{}}}')\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_extra_wrapper_key(self):\\n        text = '{\\\"version\\\":1,\\\"state\\\":{},\\\"extra\\\":true}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_missing_wrapper_key(self):\\n        text = '{\\\"version\\\":1}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_missing_state_field(self):\\n        text = '{\\\"version\\\":1,\\\"state\\\":{\\\"stock\\\":{},\\\"requests\\\":{}}}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_extra_state_field(self):\\n        text = ('{\\\"version\\\":1,\\\"state\\\":{\\\"stock\\\":{},\\\"requests\\\":{},\\\"seen\\\":{},'\\n                '\\\"extra\\\":1}}')\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_version_zero(self):\\n        text = '{\\\"version\\\":0,\\\"state\\\":{}}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_version_two(self):\\n        text = '{\\\"version\\\":2,\\\"state\\\":{}}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_version_boolean(self):\\n        text = '{\\\"version\\\":true,\\\"state\\\":{}}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_version_string(self):\\n        text = '{\\\"version\\\":\\\"1\\\",\\\"state\\\":{}}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_malformed_json(self):\\n        text = '{\\\"version\\\":1,\\\"state\\\":'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_state_not_dict(self):\\n        text = '{\\\"version\\\":1,\\\"state\\\":[1,2,3]}'\\n        with self.assertRaises(ValueError):\\n            load_state(text)\\n\\n    def test_stock_invalid_quantity_float(self):\\n        self.assertRejected({'stock': {'a': 1.5}, 'requests': {}, 'seen': {}})\\n\\n    def test_stock_invalid_quantity_boolean(self):\\n        self.assertRejected({'stock': {'a': True}, 'requests': {}, 'seen': {}})\\n\\n    def test_stock_invalid_quantity_negative(self):\\n        self.assertRejected({'stock': {'a': -1}, 'requests': {}, 'seen': {}})\\n\\n    def test_stock_invalid_sku_empty(self):\\n        self.assertRejected({'stock': {'': 1}, 'requests': {}, 'seen': {}})\\n\\n    def test_stock_invalid_sku_boolean(self):\\n        self.assertRejected({'stock': {True: 1}, 'requests': {}, 'seen': {}})\\n\\n    def test_request_invalid_quantity_float(self):\\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': 0.5}},\\n                             'seen': {}})\\n\\n    def test_request_invalid_quantity_boolean(self):\\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': True}},\\n                             'seen': {}})\\n\\n    def test_request_invalid_quantity_zero(self):\\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': 0}},\\n                             'seen': {}})\\n\\n    def test_request_empty_id(self):\\n        self.assertRejected({'stock': {}, 'requests': {'': {}}, 'seen': {}})\\n\\n    def test_request_lines_not_dict(self):\\n        self.assertRejected({'stock': {}, 'requests': {'r': [('a', 1)]},\\n                             'seen': {}})\\n\\n    def test_seen_unaggregated_reserve(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\\n                                'lines': [['A', 1], ['A', 2]]}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_reordered_reserve(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\\n                                'lines': [['B', 1], ['A', 1]]}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_id_mismatch(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'wrong_id': {'id': 'e1', 'op': 'restock',\\n                                       'sku': 'A', 'qty': 1}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_restock_boolean_qty(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\\n                                'qty': True}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_restock_float_qty(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\\n                                'qty': 1.5}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_reserve_boolean_qty(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\\n                                'lines': [['A', True]]}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_unknown_op(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'bogus'}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_missing_id(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'op': 'restock', 'sku': 'A', 'qty': 1}}}\\n        self.assertRejected(state)\\n\\n    def test_seen_extra_field(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\\n                                'qty': 1, 'extra': 1}}}\\n        self.assertRejected(state)\\n\\n    def test_dump_invalid_state_raises(self):\\n        with self.assertRaises(ValueError):\\n            dump_state({'stock': {'a': True}, 'requests': {}, 'seen': {}})\\n        with self.assertRaises(ValueError):\\n            dump_state({'stock': {}, 'requests': {}, 'seen': {}} if False\\n                       else {'stock': {}, 'requests': {}, 'seen': 'x'})\\n\\n\\nclass CheckpointConsistencyTest(unittest.TestCase):\\n    def test_loaded_state_verified_equal(self):\\n        state = apply_event(\\n            apply_event(empty_state(), parse_event(\\n                '{\\\"id\\\":\\\"e1\\\",\\\"op\\\":\\\"restock\\\",\\\"sku\\\":\\\"A\\\",\\\"qty\\\":4}')),\\n            parse_event('{\\\"id\\\":\\\"e2\\\",\\\"op\\\":\\\"reserve\\\",\\\"request\\\":\\\"r\\\",\\\"lines\\\":[[\\\"A\\\",1]]}'))\\n        loaded = load_state(dump_state(state))\\n        self.assertEqual(loaded, state)\\n\\n    def test_space_skus_valid_and_preserved(self):\\n        state = {'stock': {' pi pe\\\\\\\\|': 3}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'restock',\\n                                'sku': ' pi pe\\\\\\\\|', 'qty': 3}}}\\n        text = dump_state(state)\\n        loaded = load_state(text)\\n        self.assertEqual(loaded['stock'][' pi pe\\\\\\\\|'], 3)\\n        self.assertEqual(loaded['seen']['e']['sku'], ' pi pe\\\\\\\\|')\\n\\n    def test_unicode_preserved(self):\\n        state = {'stock': {'sesqui\\u00e9l': 1}, 'requests': {},\\n                 'seen': {'e': {'id': 'e', 'op': 'restock',\\n                                'sku': 'sesqui\\u00e9l', 'qty': 1}}}\\n        text = dump_state(state)\\n        self.assertIn('sesqui\\u00e9l', text)\\n        self.assertEqual(load_state(text), state)\\n\\n    def test_empty_request_allowed(self):\\n        state = {'stock': {}, 'requests': {'r': {}}, 'seen': {}}\\n        self.assertEqual(load_state(dump_state(state)), state)\\n\\n    def test_canonical_dump_of_seen_restock(self):\\n        state = {'stock': {}, 'requests': {},\\n                 'seen': {'e': {'qty': 1, 'sku': 'A', 'op': 'restock',\\n                                'id': 'e'}}}\\n        text = dump_state(state)\\n        # sort_keys=True sorts nested keys too\\n        self.assertIn('\\\"state\\\":{\\\"requests\\\":{},\\\"seen\\\":{\\\"e\\\":{\\\"id\\\":\\\"e\\\",'\\n                      '\\\"op\\\":\\\"restock\\\",\\\"qty\\\":1,\\\"sku\\\":\\\"A\\\"}},\\\"stock\\\":{}}',\\n                      text)\\n\\n\\nif __name__ == '__main__':\\n    unittest.main()\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "b4386790-2665-4447-bf6f-d6bfd7d44d01",
  "timestamp": "2026-10-19T08:46:01.377471",
  "source": "environment",
  "parent_id": "54c60762-2ef0-4bcf-82c8-6af179283d24",
  "tool_name": "file_editor",
  "tool_call_id": "call_50493ed4c1814239b180cead",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_checkpoint.py\nimport json\nimport unittest\nfrom copy import deepcopy\n\nfrom checkpoint import dump_state, load_state, validate\nfrom reducer import empty_state, apply_event\nfrom codec import parse_event\n\n\ndef build_state(stock=None, requests=None, seen=None):\n    state = empty_state()\n    if stock is not None:\n        state['stock'] = stock\n    if requests is not None:\n        state['requests'] = requests\n    if seen is not None:\n        state['seen'] = seen\n    return state\n\n\nclass CheckpointDumpRoundTripTest(unittest.TestCase):\n    def make_workflow_state(self):\n        state = empty_state()\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}'))\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":5}'))\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e3\",\"op\":\"reserve\",\"request\":\"r1\",\"lines\":[[\"A\",3],[\"B\",2]]}'))\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e4\",\"op\":\"cancel\",\"request\":\"r1\"}'))\n        # record is retained after cancellation\n        return state\n\n    def test_round_trip_preserves_fields_and_replay(self):\n        state = self.make_workflow_state()\n        text = dump_state(state)\n        loaded = load_state(text)\n        self.assertEqual(loaded['stock'], state['stock'])\n        self.assertEqual(loaded['requests'], state['requests'])\n        self.assertEqual(loaded['seen'], state['seen'])\n        # cancelled request replayed with fresh id still works\n        loaded2 = apply_event(loaded, parse_event(\n            '{\"id\":\"e5\",\"op\":\"reserve\",\"request\":\"r1\",\"lines\":[[\"A\",1],[\"B\",1]]}'))\n        self.assertIn('r1', loaded2['requests'])\n        # replay of an old event is a no-op (seen precond)\n        replay = apply_event(loaded, parse_event(\n            '{\"id\":\"e1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}'))\n        self.assertEqual(replay['stock'], loaded['stock'])\n\n    def test_exact_dump_format(self):\n        state = empty_state()\n        text = dump_state(state)\n        expected = '{\"version\":1,\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}}\\n'\n        self.assertEqual(text, expected)\n        self.assertTrue(text.endswith('\\n'))\n        self.assertEqual(text.count('\\n'), 1)\n\n    def test_insertion_order_byte_identical(self):\n        state1 = {'stock': {'a': 1, 'b': 2},\n                  'requests': {'r': {'a': 1}},\n                  'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'a', 'qty': 1}}}\n        state2 = {'requests': {},\n                  'seen': {'e': {'qty': 1, 'sku': 'a', 'op': 'restock', 'id': 'e'}},\n                  'stock': {'b': 2, 'a': 1}}\n        # note: seen event is inserted with shuffled key order too; it must\n        # still be canonical (sort_keys applies to dump but equality compares\n        # dicts) so use an ordering that survives json sorting.\n        self.assertEqual(dump_state(state1), dump_state(state2))\n\n    def test_load_accepts_surrounding_whitespace(self):\n        state = self.make_workflow_state()\n        text = dump_state(state)\n        for padded in ('\\n' + text, '  ' + text + '  \\n', '\\t' + text):\n            self.assertEqual(load_state(padded), state)\n\n    def test_load_returns_detached_data(self):\n        text = dump_state(self.make_workflow_state())\n        loaded = load_state(text)\n        loaded['stock']['A'] = 999\n        loaded['seen']['e1']['qty'] = 999\n        self.assertEqual(load_state(text)['stock']['A'], 7)  # 10-3 from e3\n        self.assertEqual(load_state(text)['seen']['e1']['qty'], 10)\n\n    def test_dump_does_not_mutate_input(self):\n        state = self.make_workflow_state()\n        snapshot = deepcopy(state)\n        dump_state(state)\n        self.assertEqual(state, snapshot)\n        # nested seen event untouched\n        self.assertEqual(state['seen'], snapshot['seen'])\n\n    def test_load_does_not_mutate_text(self):\n        text = dump_state(self.make_workflow_state())\n        original = text\n        load_state(text)\n        self.assertEqual(text, original)\n\n\nclass CheckpointRejectTest(unittest.TestCase):\n    def assertRejected(self, state, text=None):\n        with self.assertRaises(ValueError):\n            dump_state(state)\n        if text is not None:\n            with self.assertRaises(ValueError):\n                load_state(text)\n\n    def test_duplicate_wrapper_key(self):\n        text = '{\"version\":1,\"version\":2,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_duplicate_nested_key(self):\n        text = ('{\"version\":1,\"state\":{\"stock\":{\"a\":1,\"a\":2},'\n                '\"requests\":{},\"seen\":{}}}')\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_extra_wrapper_key(self):\n        text = '{\"version\":1,\"state\":{},\"extra\":true}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_missing_wrapper_key(self):\n        text = '{\"version\":1}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_missing_state_field(self):\n        text = '{\"version\":1,\"state\":{\"stock\":{},\"requests\":{}}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_extra_state_field(self):\n        text = ('{\"version\":1,\"state\":{\"stock\":{},\"requests\":{},\"seen\":{},'\n                '\"extra\":1}}')\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_zero(self):\n        text = '{\"version\":0,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_two(self):\n        text = '{\"version\":2,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_boolean(self):\n        text = '{\"version\":true,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_string(self):\n        text = '{\"version\":\"1\",\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_malformed_json(self):\n        text = '{\"version\":1,\"state\":'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_state_not_dict(self):\n        text = '{\"version\":1,\"state\":[1,2,3]}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_stock_invalid_quantity_float(self):\n        self.assertRejected({'stock': {'a': 1.5}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_quantity_boolean(self):\n        self.assertRejected({'stock': {'a': True}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_quantity_negative(self):\n        self.assertRejected({'stock': {'a': -1}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_sku_empty(self):\n        self.assertRejected({'stock': {'': 1}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_sku_boolean(self):\n        self.assertRejected({'stock': {True: 1}, 'requests': {}, 'seen': {}})\n\n    def test_request_invalid_quantity_float(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': 0.5}},\n                             'seen': {}})\n\n    def test_request_invalid_quantity_boolean(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': True}},\n                             'seen': {}})\n\n    def test_request_invalid_quantity_zero(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': 0}},\n                             'seen': {}})\n\n    def test_request_empty_id(self):\n        self.assertRejected({'stock': {}, 'requests': {'': {}}, 'seen': {}})\n\n    def test_request_lines_not_dict(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': [('a', 1)]},\n                             'seen': {}})\n\n    def test_seen_unaggregated_reserve(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\n                                'lines': [['A', 1], ['A', 2]]}}}\n        self.assertRejected(state)\n\n    def test_seen_reordered_reserve(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\n                                'lines': [['B', 1], ['A', 1]]}}}\n        self.assertRejected(state)\n\n    def test_seen_id_mismatch(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'wrong_id': {'id': 'e1', 'op': 'restock',\n                                       'sku': 'A', 'qty': 1}}}\n        self.assertRejected(state)\n\n    def test_seen_restock_boolean_qty(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\n                                'qty': True}}}\n        self.assertRejected(state)\n\n    def test_seen_restock_float_qty(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\n                                'qty': 1.5}}}\n        self.assertRejected(state)\n\n    def test_seen_reserve_boolean_qty(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\n                                'lines': [['A', True]]}}}\n        self.assertRejected(state)\n\n    def test_seen_unknown_op(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'bogus'}}}\n        self.assertRejected(state)\n\n    def test_seen_missing_id(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'op': 'restock', 'sku': 'A', 'qty': 1}}}\n        self.assertRejected(state)\n\n    def test_seen_extra_field(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\n                                'qty': 1, 'extra': 1}}}\n        self.assertRejected(state)\n\n    def test_dump_invalid_state_raises(self):\n        with self.assertRaises(ValueError):\n            dump_state({'stock': {'a': True}, 'requests': {}, 'seen': {}})\n        with self.assertRaises(ValueError):\n            dump_state({'stock': {}, 'requests': {}, 'seen': {}} if False\n                       else {'stock': {}, 'requests': {}, 'seen': 'x'})\n\n\nclass CheckpointConsistencyTest(unittest.TestCase):\n    def test_loaded_state_verified_equal(self):\n        state = apply_event(\n            apply_event(empty_state(), parse_event(\n                '{\"id\":\"e1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":4}')),\n            parse_event('{\"id\":\"e2\",\"op\":\"reserve\",\"request\":\"r\",\"lines\":[[\"A\",1]]}'))\n        loaded = load_state(dump_state(state))\n        self.assertEqual(loaded, state)\n\n    def test_space_skus_valid_and_preserved(self):\n        state = {'stock': {' pi pe\\\\|': 3}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock',\n                                'sku': ' pi pe\\\\|', 'qty': 3}}}\n        text = dump_state(state)\n        loaded = load_state(text)\n        self.assertEqual(loaded['stock'][' pi pe\\\\|'], 3)\n        self.assertEqual(loaded['seen']['e']['sku'], ' pi pe\\\\|')\n\n    def test_unicode_preserved(self):\n        state = {'stock': {'sesquiél': 1}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock',\n                                'sku': 'sesquiél', 'qty': 1}}}\n        text = dump_state(state)\n        self.assertIn('sesquiél', text)\n        self.assertEqual(load_state(text), state)\n\n    def test_empty_request_allowed(self):\n        state = {'stock': {}, 'requests': {'r': {}}, 'seen': {}}\n        self.assertEqual(load_state(dump_state(state)), state)\n\n    def test_canonical_dump_of_seen_restock(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'qty': 1, 'sku': 'A', 'op': 'restock',\n                                'id': 'e'}}}\n        text = dump_state(state)\n        # sort_keys=True sorts nested keys too\n        self.assertIn('\"state\":{\"requests\":{},\"seen\":{\"e\":{\"id\":\"e\",'\n                      '\"op\":\"restock\",\"qty\":1,\"sku\":\"A\"}},\"stock\":{}}',\n                      text)\n\n\nif __name__ == '__main__':\n    unittest.main()"
      }
    ],
    "is_error": false,
    "command": "create",
    "path": "/workspace/test_checkpoint.py",
    "prev_exist": true,
    "old_content": null,
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    "kind": "FileEditorObservation"
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{
  "id": "ed8609b7-b419-46e0-991c-78225e9a78ce",
  "timestamp": "2026-10-19T08:46:03.029788",
  "source": "agent",
  "parent_id": "b4386790-2665-4447-bf6f-d6bfd7d44d01",
  "responses_reasoning_item": null,
  "action": {
    "command": "cd /workspace && PYTHONDONTWRITEBYTECODE=1 python3 -m unittest test_checkpoint -v",
    "is_input": false,
    "timeout": null,
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    "kind": "TerminalAction"
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  "tool_name": "terminal",
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  "tool_call": {
    "id": "call_eff2684a31b84d08b23d1b7b",
    "responses_item_id": null,
    "name": "terminal",
    "arguments": "{\"command\": \"cd /workspace && PYTHONDONTWRITEBYTECODE=1 python3 -m unittest test_checkpoint -v\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792417561-81eX5Gem0BV8gV7thQz5",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "terminal: {\"command\": \"cd /workspace && PYTHONDONTWRITEBYTECODE=1 python3 -m unittest test_checkpoint -v\"}",
  "kind": "ActionEvent",
  "thought": []
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{
  "id": "63946aa0-7a23-4bae-a663-7a063e57afe9",
  "timestamp": "2026-10-19T08:46:03.336934",
  "source": "environment",
  "parent_id": "ed8609b7-b419-46e0-991c-78225e9a78ce",
  "tool_name": "terminal",
  "tool_call_id": "call_eff2684a31b84d08b23d1b7b",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "test_canonical_dump_of_seen_restock (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_empty_request_allowed (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_loaded_state_verified_equal (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_space_skus_valid_and_preserved (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_unicode_preserved (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_dump_does_not_mutate_input (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_exact_dump_format (test_checkpoint.CheckpointDumpRoundTripTest) ... FAIL\ntest_insertion_order_byte_identical (test_checkpoint.CheckpointDumpRoundTripTest) ... FAIL\ntest_load_accepts_surrounding_whitespace (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_load_does_not_mutate_text (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_load_returns_detached_data (test_checkpoint.CheckpointDumpRoundTripTest) ... FAIL\ntest_round_trip_preserves_fields_and_replay (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_dump_invalid_state_raises (test_checkpoint.CheckpointRejectTest) ... ok\ntest_duplicate_nested_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_duplicate_wrapper_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_extra_state_field (test_checkpoint.CheckpointRejectTest) ... ok\ntest_extra_wrapper_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_malformed_json (test_checkpoint.CheckpointRejectTest) ... ok\ntest_missing_state_field (test_checkpoint.CheckpointRejectTest) ... ok\ntest_missing_wrapper_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_empty_id (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_invalid_quantity_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_invalid_quantity_float (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_invalid_quantity_zero (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_lines_not_dict (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_extra_field (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_id_mismatch (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_missing_id (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_reordered_reserve (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_reserve_boolean_qty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_restock_boolean_qty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_restock_float_qty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_unaggregated_reserve (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_unknown_op (test_checkpoint.CheckpointRejectTest) ... ok\ntest_state_not_dict (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_quantity_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_quantity_float (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_quantity_negative (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_sku_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_sku_empty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_string (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_two (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_zero (test_checkpoint.CheckpointRejectTest) ... ok\n\n======================================================================\nFAIL: test_exact_dump_format (test_checkpoint.CheckpointDumpRoundTripTest)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/./test_checkpoint.py\", line 55, in test_exact_dump_format\n    self.assertEqual(text, expected)\nAssertionError: '{\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}},\"version\":1}\\n' != '{\"version\":1,\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}}\\n'\n- {\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}},\"version\":1}\n?                                              ------------\n+ {\"version\":1,\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}}\n?  ++++++++++++\n\n\n======================================================================\nFAIL: test_insertion_order_byte_identical (test_checkpoint.CheckpointDumpRoundTripTest)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/./test_checkpoint.py\", line 69, in test_insertion_order_byte_identical\n    self.assertEqual(dump_state(state1), dump_state(state2))\nAssertionError: '{\"st[13 chars]ts\":{\"r\":{\"a\":1}},\"seen\":{\"e\":{\"id\":\"e\",\"op\":\"[62 chars]1}\\n' != '{\"st[13 chars]ts\":{},\"seen\":{\"e\":{\"id\":\"e\",\"op\":\"restock\",\"q[51 chars]1}\\n'\n- {\"state\":{\"requests\":{\"r\":{\"a\":1}},\"seen\":{\"e\":{\"id\":\"e\",\"op\":\"restock\",\"qty\":1,\"sku\":\"a\"}},\"stock\":{\"a\":1,\"b\":2}},\"version\":1}\n?                       -----------\n+ {\"state\":{\"requests\":{},\"seen\":{\"e\":{\"id\":\"e\",\"op\":\"restock\",\"qty\":1,\"sku\":\"a\"}},\"stock\":{\"a\":1,\"b\":2}},\"version\":1}\n\n\n======================================================================\nFAIL: test_load_returns_detached_data (test_checkpoint.CheckpointDumpRoundTripTest)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/./test_checkpoint.py\", line 82, in test_load_returns_detached_data\n    self.assertEqual(load_state(text)['stock']['A'], 7)  # 10-3 from e3\nAssertionError: 10 != 7\n\n----------------------------------------------------------------------\nRan 44 tests in 0.002s\n\nFAILED (failures=3)\n"
      }
    ],
    "is_error": false,
    "command": "cd /workspace && PYTHONDONTWRITEBYTECODE=1 python3 -m unittest test_checkpoint -v",
    "exit_code": 1,
    "timeout": false,
    "metadata": {
      "exit_code": -1,
      "pid": -1,
      "username": null,
      "hostname": null,
      "working_dir": null,
      "py_interpreter_path": null,
      "prefix": "",
      "suffix": ""
    },
    "full_output_save_dir": null,
    "kind": "TerminalObservation"
  },
  "action_id": "ed8609b7-b419-46e0-991c-78225e9a78ce",
  "extended_content": [],
  "kind": "ObservationEvent"
}

{
  "id": "2140e148-482e-4a44-8b34-864e8ed233d1",
  "timestamp": "2026-10-19T08:46:26.881786",
  "source": "agent",
  "parent_id": "63946aa0-7a23-4bae-a663-7a063e57afe9",
  "responses_reasoning_item": null,
  "action": {
    "command": "str_replace",
    "path": "/workspace/test_checkpoint.py",
    "file_text": null,
    "old_str": "def test_exact_dump_format(self):\n        state = empty_state()\n        text = dump_state(state)\n        expected = '{\"version\":1,\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}}\\n'\n        self.assertEqual(text, expected)\n        self.assertTrue(text.endswith('\\n'))\n        self.assertEqual(text.count('\\n'), 1)\n\n    def test_insertion_order_byte_identical(self):\n        state1 = {'stock': {'a': 1, 'b': 2},\n                  'requests': {'r': {'a': 1}},\n                  'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'a', 'qty': 1}}}\n        state2 = {'requests': {},\n                  'seen': {'e': {'qty': 1, 'sku': 'a', 'op': 'restock', 'id': 'e'}},\n                  'stock': {'b': 2, 'a': 1}}\n        # note: seen event is inserted with shuffled key order too; it must\n        # still be canonical (sort_keys applies to dump but equality compares\n        # dicts) so use an ordering that survives json sorting.\n        self.assertEqual(dump_state(state1), dump_state(state2))",
    "new_str": "def test_exact_dump_format(self):\n        state = empty_state()\n        text = dump_state(state)\n        # sort_keys=True lexicographically sorts the wrapper keys too, so\n        # \"state\" precedes \"version\" in the byte output.\n        expected = '{\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}},\"version\":1}\\n'\n        self.assertEqual(text, expected)\n        self.assertTrue(text.endswith('\\n'))\n        self.assertEqual(text.count('\\n'), 1)\n\n    def test_insertion_order_byte_identical(self):\n        state1 = {'stock': {'a': 1, 'b': 2},\n                  'requests': {'r': {'a': 1}},\n                  'seen': {'e': {'id': 'e', 'op': 'restock',\n                                 'sku': 'a', 'qty': 1}}}\n        state2 = {'requests': {'r': {'a': 1}},\n                  'seen': {'e': {'qty': 1, 'sku': 'a', 'op': 'restock',\n                                 'id': 'e'}},\n                  'stock': {'b': 2, 'a': 1}}\n        # Same equal content in different dict insertion order; both dumps\n        # collapse to byte-identical text thanks to sort_keys=True.\n        self.assertEqual(dump_state(state1), dump_state(state2))",
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_97fb39ddbbc549a99c92edd1",
  "tool_call": {
    "id": "call_97fb39ddbbc549a99c92edd1",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/test_checkpoint.py\", \"old_str\": \"def test_exact_dump_format(self):\\n        state = empty_state()\\n        text = dump_state(state)\\n        expected = '{\\\"version\\\":1,\\\"state\\\":{\\\"requests\\\":{},\\\"seen\\\":{},\\\"stock\\\":{}}}\\\\n'\\n        self.assertEqual(text, expected)\\n        self.assertTrue(text.endswith('\\\\n'))\\n        self.assertEqual(text.count('\\\\n'), 1)\\n\\n    def test_insertion_order_byte_identical(self):\\n        state1 = {'stock': {'a': 1, 'b': 2},\\n                  'requests': {'r': {'a': 1}},\\n                  'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'a', 'qty': 1}}}\\n        state2 = {'requests': {},\\n                  'seen': {'e': {'qty': 1, 'sku': 'a', 'op': 'restock', 'id': 'e'}},\\n                  'stock': {'b': 2, 'a': 1}}\\n        # note: seen event is inserted with shuffled key order too; it must\\n        # still be canonical (sort_keys applies to dump but equality compares\\n        # dicts) so use an ordering that survives json sorting.\\n        self.assertEqual(dump_state(state1), dump_state(state2))\", \"new_str\": \"def test_exact_dump_format(self):\\n        state = empty_state()\\n        text = dump_state(state)\\n        # sort_keys=True lexicographically sorts the wrapper keys too, so\\n        # \\\"state\\\" precedes \\\"version\\\" in the byte output.\\n        expected = '{\\\"state\\\":{\\\"requests\\\":{},\\\"seen\\\":{},\\\"stock\\\":{}},\\\"version\\\":1}\\\\n'\\n        self.assertEqual(text, expected)\\n        self.assertTrue(text.endswith('\\\\n'))\\n        self.assertEqual(text.count('\\\\n'), 1)\\n\\n    def test_insertion_order_byte_identical(self):\\n        state1 = {'stock': {'a': 1, 'b': 2},\\n                  'requests': {'r': {'a': 1}},\\n                  'seen': {'e': {'id': 'e', 'op': 'restock',\\n                                 'sku': 'a', 'qty': 1}}}\\n        state2 = {'requests': {'r': {'a': 1}},\\n                  'seen': {'e': {'qty': 1, 'sku': 'a', 'op': 'restock',\\n                                 'id': 'e'}},\\n                  'stock': {'b': 2, 'a': 1}}\\n        # Same equal content in different dict insertion order; both dumps\\n        # collapse to byte-identical text thanks to sort_keys=True.\\n        self.assertEqual(dump_state(state1), dump_state(state2))\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792417563-HMCxdB7ueUfDMsATFYsC",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/test_checkpoint.py\", \"old_str\": \"def test_exact_dump_format(self):\\n        state = empty_state()\\n        text = dump_state(state)\\n        expected = '{\\\"version\\\":1,\\\"state\\\":{\\\"requests\\\":{},\\\"seen\\\":{},\\\"stock\\\":{}}}\\\\n'\\n        self.assertEqual(text, expected)\\n        self.assertTrue(text.endswith('\\\\n'))\\n        self.assertEqual(text.count('\\\\n'), 1)\\n\\n    def test_insertion_order_byte_identical(self):\\n        state1 = {'stock': {'a': 1, 'b': 2},\\n                  'requests': {'r': {'a': 1}},\\n                  'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'a', 'qty': 1}}}\\n        state2 = {'requests': {},\\n                  'seen': {'e': {'qty': 1, 'sku': 'a', 'op': 'restock', 'id': 'e'}},\\n                  'stock': {'b': 2, 'a': 1}}\\n        # note: seen event is inserted with shuffled key order too; it must\\n        # still be canonical (sort_keys applies to dump but equality compares\\n        # dicts) so use an ordering that survives json sorting.\\n        self.assertEqual(dump_state(state1), dump_state(state2))\", \"new_str\": \"def test_exact_dump_format(self):\\n        state = empty_state()\\n        text = dump_state(state)\\n        # sort_keys=True lexicographically sorts the wrapper keys too, so\\n        # \\\"state\\\" precedes \\\"version\\\" in the byte output.\\n        expected = '{\\\"state\\\":{\\\"requests\\\":{},\\\"seen\\\":{},\\\"stock\\\":{}},\\\"version\\\":1}\\\\n'\\n        self.assertEqual(text, expected)\\n        self.assertTrue(text.endswith('\\\\n'))\\n        self.assertEqual(text.count('\\\\n'), 1)\\n\\n    def test_insertion_order_byte_identical(self):\\n        state1 = {'stock': {'a': 1, 'b': 2},\\n                  'requests': {'r': {'a': 1}},\\n                  'seen': {'e': {'id': 'e', 'op': 'restock',\\n                                 'sku': 'a', 'qty': 1}}}\\n        state2 = {'requests': {'r': {'a': 1}},\\n                  'seen': {'e': {'qty': 1, 'sku': 'a', 'op': 'restock',\\n                                 'id': 'e'}},\\n                  'stock': {'b': 2, 'a': 1}}\\n        # Same equal content in different dict insertion order; both dumps\\n        # collapse to byte-identical text thanks to sort_keys=True.\\n        self.assertEqual(dump_state(state1), dump_state(state2))\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "c750d960-fd41-4a89-9810-8817cb19d8ac",
  "timestamp": "2026-10-19T08:46:27.072622",
  "source": "environment",
  "parent_id": "2140e148-482e-4a44-8b34-864e8ed233d1",
  "tool_name": "file_editor",
  "tool_call_id": "call_97fb39ddbbc549a99c92edd1",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_checkpoint.py\nimport json\nimport unittest\nfrom copy import deepcopy\n\nfrom checkpoint import dump_state, load_state, validate\nfrom reducer import empty_state, apply_event\nfrom codec import parse_event\n\n\ndef build_state(stock=None, requests=None, seen=None):\n    state = empty_state()\n    if stock is not None:\n        state['stock'] = stock\n    if requests is not None:\n        state['requests'] = requests\n    if seen is not None:\n        state['seen'] = seen\n    return state\n\n\nclass CheckpointDumpRoundTripTest(unittest.TestCase):\n    def make_workflow_state(self):\n        state = empty_state()\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}'))\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":5}'))\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e3\",\"op\":\"reserve\",\"request\":\"r1\",\"lines\":[[\"A\",3],[\"B\",2]]}'))\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e4\",\"op\":\"cancel\",\"request\":\"r1\"}'))\n        # record is retained after cancellation\n        return state\n\n    def test_round_trip_preserves_fields_and_replay(self):\n        state = self.make_workflow_state()\n        text = dump_state(state)\n        loaded = load_state(text)\n        self.assertEqual(loaded['stock'], state['stock'])\n        self.assertEqual(loaded['requests'], state['requests'])\n        self.assertEqual(loaded['seen'], state['seen'])\n        # cancelled request replayed with fresh id still works\n        loaded2 = apply_event(loaded, parse_event(\n            '{\"id\":\"e5\",\"op\":\"reserve\",\"request\":\"r1\",\"lines\":[[\"A\",1],[\"B\",1]]}'))\n        self.assertIn('r1', loaded2['requests'])\n        # replay of an old event is a no-op (seen precond)\n        replay = apply_event(loaded, parse_event(\n            '{\"id\":\"e1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}'))\n        self.assertEqual(replay['stock'], loaded['stock'])\n\n    def test_exact_dump_format(self):\n        state = empty_state()\n        text = dump_state(state)\n        # sort_keys=True lexicographically sorts the wrapper keys too, so\n        # \"state\" precedes \"version\" in the byte output.\n        expected = '{\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}},\"version\":1}\\n'\n        self.assertEqual(text, expected)\n        self.assertTrue(text.endswith('\\n'))\n        self.assertEqual(text.count('\\n'), 1)\n\n    def test_insertion_order_byte_identical(self):\n        state1 = {'stock': {'a': 1, 'b': 2},\n                  'requests': {'r': {'a': 1}},\n                  'seen': {'e': {'id': 'e', 'op': 'restock',\n                                 'sku': 'a', 'qty': 1}}}\n        state2 = {'requests': {'r': {'a': 1}},\n                  'seen': {'e': {'qty': 1, 'sku': 'a', 'op': 'restock',\n                                 'id': 'e'}},\n                  'stock': {'b': 2, 'a': 1}}\n        # Same equal content in different dict insertion order; both dumps\n        # collapse to byte-identical text thanks to sort_keys=True.\n        self.assertEqual(dump_state(state1), dump_state(state2))\n\n    def test_load_accepts_surrounding_whitespace(self):\n        state = self.make_workflow_state()\n        text = dump_state(state)\n        for padded in ('\\n' + text, '  ' + text + '  \\n', '\\t' + text):\n            self.assertEqual(load_state(padded), state)\n\n    def test_load_returns_detached_data(self):\n        text = dump_state(self.make_workflow_state())\n        loaded = load_state(text)\n        loaded['stock']['A'] = 999\n        loaded['seen']['e1']['qty'] = 999\n        self.assertEqual(load_state(text)['stock']['A'], 7)  # 10-3 from e3\n        self.assertEqual(load_state(text)['seen']['e1']['qty'], 10)\n\n    def test_dump_does_not_mutate_input(self):\n        state = self.make_workflow_state()\n        snapshot = deepcopy(state)\n        dump_state(state)\n        self.assertEqual(state, snapshot)\n        # nested seen event untouched\n        self.assertEqual(state['seen'], snapshot['seen'])\n\n    def test_load_does_not_mutate_text(self):\n        text = dump_state(self.make_workflow_state())\n        original = text\n        load_state(text)\n        self.assertEqual(text, original)\n\n\nclass CheckpointRejectTest(unittest.TestCase):\n    def assertRejected(self, state, text=None):\n        with self.assertRaises(ValueError):\n            dump_state(state)\n        if text is not None:\n            with self.assertRaises(ValueError):\n                load_state(text)\n\n    def test_duplicate_wrapper_key(self):\n        text = '{\"version\":1,\"version\":2,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_duplicate_nested_key(self):\n        text = ('{\"version\":1,\"state\":{\"stock\":{\"a\":1,\"a\":2},'\n                '\"requests\":{},\"seen\":{}}}')\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_extra_wrapper_key(self):\n        text = '{\"version\":1,\"state\":{},\"extra\":true}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_missing_wrapper_key(self):\n        text = '{\"version\":1}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_missing_state_field(self):\n        text = '{\"version\":1,\"state\":{\"stock\":{},\"requests\":{}}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_extra_state_field(self):\n        text = ('{\"version\":1,\"state\":{\"stock\":{},\"requests\":{},\"seen\":{},'\n                '\"extra\":1}}')\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_zero(self):\n        text = '{\"version\":0,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_two(self):\n        text = '{\"version\":2,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_boolean(self):\n        text = '{\"version\":true,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_string(self):\n        text = '{\"version\":\"1\",\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_malformed_json(self):\n        text = '{\"version\":1,\"state\":'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_state_not_dict(self):\n        text = '{\"version\":1,\"state\":[1,2,3]}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_stock_invalid_quantity_float(self):\n        self.assertRejected({'stock': {'a': 1.5}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_quantity_boolean(self):\n        self.assertRejected({'stock': {'a': True}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_quantity_negative(self):\n        self.assertRejected({'stock': {'a': -1}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_sku_empty(self):\n        self.assertRejected({'stock': {'': 1}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_sku_boolean(self):\n        self.assertRejected({'stock': {True: 1}, 'requests': {}, 'seen': {}})\n\n    def test_request_invalid_quantity_float(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': 0.5}},\n                             'seen': {}})\n\n    def test_request_invalid_quantity_boolean(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': True}},\n                             'seen': {}})\n\n    def test_request_invalid_quantity_zero(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': 0}},\n                             'seen': {}})\n\n    def test_request_empty_id(self):\n        self.assertRejected({'stock': {}, 'requests': {'': {}}, 'seen': {}})\n\n    def test_request_lines_not_dict(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': [('a', 1)]},\n                             'seen': {}})\n\n    def test_seen_unaggregated_reserve(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\n                                'lines': [['A', 1], ['A', 2]]}}}\n        self.assertRejected(state)\n\n    def test_seen_reordered_reserve(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\n                                'lines': [['B', 1], ['A', 1]]}}}\n        self.assertRejected(state)\n\n    def test_seen_id_mismatch(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'wrong_id': {'id': 'e1', 'op': 'restock',\n                                       'sku': 'A', 'qty': 1}}}\n        self.assertRejected(state)\n\n    def test_seen_restock_boolean_qty(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\n                                'qty': True}}}\n        self.assertRejected(state)\n\n    def test_seen_restock_float_qty(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\n                                'qty': 1.5}}}\n        self.assertRejected(state)\n\n    def test_seen_reserve_boolean_qty(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\n                                'lines': [['A', True]]}}}\n        self.assertRejected(state)\n\n    def test_seen_unknown_op(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'bogus'}}}\n        self.assertRejected(state)\n\n    def test_seen_missing_id(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'op': 'restock', 'sku': 'A', 'qty': 1}}}\n        self.assertRejected(state)\n\n    def test_seen_extra_field(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\n                                'qty': 1, 'extra': 1}}}\n        self.assertRejected(state)\n\n    def test_dump_invalid_state_raises(self):\n        with self.assertRaises(ValueError):\n            dump_state({'stock': {'a': True}, 'requests': {}, 'seen': {}})\n        with self.assertRaises(ValueError):\n            dump_state({'stock': {}, 'requests': {}, 'seen': {}} if False\n                       else {'stock': {}, 'requests': {}, 'seen': 'x'})\n\n\nclass CheckpointConsistencyTest(unittest.TestCase):\n    def test_loaded_state_verified_equal(self):\n        state = apply_event(\n            apply_event(empty_state(), parse_event(\n                '{\"id\":\"e1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":4}')),\n            parse_event('{\"id\":\"e2\",\"op\":\"reserve\",\"request\":\"r\",\"lines\":[[\"A\",1]]}'))\n        loaded = load_state(dump_state(state))\n        self.assertEqual(loaded, state)\n\n    def test_space_skus_valid_and_preserved(self):\n        state = {'stock': {' pi pe\\\\|': 3}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock',\n                                'sku': ' pi pe\\\\|', 'qty': 3}}}\n        text = dump_state(state)\n        loaded = load_state(text)\n        self.assertEqual(loaded['stock'][' pi pe\\\\|'], 3)\n        self.assertEqual(loaded['seen']['e']['sku'], ' pi pe\\\\|')\n\n    def test_unicode_preserved(self):\n        state = {'stock': {'sesquiél': 1}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock',\n                                'sku': 'sesquiél', 'qty': 1}}}\n        text = dump_state(state)\n        self.assertIn('sesquiél', text)\n        self.assertEqual(load_state(text), state)\n\n    def test_empty_request_allowed(self):\n        state = {'stock': {}, 'requests': {'r': {}}, 'seen': {}}\n        self.assertEqual(load_state(dump_state(state)), state)\n\n    def test_canonical_dump_of_seen_restock(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'qty': 1, 'sku': 'A', 'op': 'restock',\n                                'id': 'e'}}}\n        text = dump_state(state)\n        # sort_keys=True sorts nested keys too\n        self.assertIn('\"state\":{\"requests\":{},\"seen\":{\"e\":{\"id\":\"e\",'\n                      '\"op\":\"restock\",\"qty\":1,\"sku\":\"A\"}},\"stock\":{}}',\n                      text)\n\n\nif __name__ == '__main__':\n    unittest.main()"
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{
  "id": "8377b111-04a7-45a8-ba33-04a390f92b59",
  "timestamp": "2026-10-19T08:46:31.156492",
  "source": "agent",
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    "new_str": "# e1 restock A=10; e3 reserved A=3; e4 cancelled -> A restored to 10\n        self.assertEqual(load_state(text)['stock']['A'], 10)\n        self.assertEqual(load_state(text)['seen']['e1']['qty'], 10)",
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    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/test_checkpoint.py\", \"old_str\": \"self.assertEqual(load_state(text)['stock']['A'], 7)  # 10-3 from e3\\n        self.assertEqual(load_state(text)['seen']['e1']['qty'], 10)\", \"new_str\": \"# e1 restock A=10; e3 reserved A=3; e4 cancelled -> A restored to 10\\n        self.assertEqual(load_state(text)['stock']['A'], 10)\\n        self.assertEqual(load_state(text)['seen']['e1']['qty'], 10)\"}",
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{
  "id": "b79e4475-0c80-47c0-86f9-46ac04ffc86b",
  "timestamp": "2026-10-19T08:46:31.495214",
  "source": "environment",
  "parent_id": "8377b111-04a7-45a8-ba33-04a390f92b59",
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      {
        "cache_prompt": false,
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        "text": "Updated /workspace/test_checkpoint.py\nimport json\nimport unittest\nfrom copy import deepcopy\n\nfrom checkpoint import dump_state, load_state, validate\nfrom reducer import empty_state, apply_event\nfrom codec import parse_event\n\n\ndef build_state(stock=None, requests=None, seen=None):\n    state = empty_state()\n    if stock is not None:\n        state['stock'] = stock\n    if requests is not None:\n        state['requests'] = requests\n    if seen is not None:\n        state['seen'] = seen\n    return state\n\n\nclass CheckpointDumpRoundTripTest(unittest.TestCase):\n    def make_workflow_state(self):\n        state = empty_state()\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}'))\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e2\",\"op\":\"restock\",\"sku\":\"B\",\"qty\":5}'))\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e3\",\"op\":\"reserve\",\"request\":\"r1\",\"lines\":[[\"A\",3],[\"B\",2]]}'))\n        state = apply_event(state, parse_event(\n            '{\"id\":\"e4\",\"op\":\"cancel\",\"request\":\"r1\"}'))\n        # record is retained after cancellation\n        return state\n\n    def test_round_trip_preserves_fields_and_replay(self):\n        state = self.make_workflow_state()\n        text = dump_state(state)\n        loaded = load_state(text)\n        self.assertEqual(loaded['stock'], state['stock'])\n        self.assertEqual(loaded['requests'], state['requests'])\n        self.assertEqual(loaded['seen'], state['seen'])\n        # cancelled request replayed with fresh id still works\n        loaded2 = apply_event(loaded, parse_event(\n            '{\"id\":\"e5\",\"op\":\"reserve\",\"request\":\"r1\",\"lines\":[[\"A\",1],[\"B\",1]]}'))\n        self.assertIn('r1', loaded2['requests'])\n        # replay of an old event is a no-op (seen precond)\n        replay = apply_event(loaded, parse_event(\n            '{\"id\":\"e1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":10}'))\n        self.assertEqual(replay['stock'], loaded['stock'])\n\n    def test_exact_dump_format(self):\n        state = empty_state()\n        text = dump_state(state)\n        # sort_keys=True lexicographically sorts the wrapper keys too, so\n        # \"state\" precedes \"version\" in the byte output.\n        expected = '{\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}},\"version\":1}\\n'\n        self.assertEqual(text, expected)\n        self.assertTrue(text.endswith('\\n'))\n        self.assertEqual(text.count('\\n'), 1)\n\n    def test_insertion_order_byte_identical(self):\n        state1 = {'stock': {'a': 1, 'b': 2},\n                  'requests': {'r': {'a': 1}},\n                  'seen': {'e': {'id': 'e', 'op': 'restock',\n                                 'sku': 'a', 'qty': 1}}}\n        state2 = {'requests': {'r': {'a': 1}},\n                  'seen': {'e': {'qty': 1, 'sku': 'a', 'op': 'restock',\n                                 'id': 'e'}},\n                  'stock': {'b': 2, 'a': 1}}\n        # Same equal content in different dict insertion order; both dumps\n        # collapse to byte-identical text thanks to sort_keys=True.\n        self.assertEqual(dump_state(state1), dump_state(state2))\n\n    def test_load_accepts_surrounding_whitespace(self):\n        state = self.make_workflow_state()\n        text = dump_state(state)\n        for padded in ('\\n' + text, '  ' + text + '  \\n', '\\t' + text):\n            self.assertEqual(load_state(padded), state)\n\n    def test_load_returns_detached_data(self):\n        text = dump_state(self.make_workflow_state())\n        loaded = load_state(text)\n        loaded['stock']['A'] = 999\n        loaded['seen']['e1']['qty'] = 999\n        # e1 restock A=10; e3 reserved A=3; e4 cancelled -> A restored to 10\n        self.assertEqual(load_state(text)['stock']['A'], 10)\n        self.assertEqual(load_state(text)['seen']['e1']['qty'], 10)\n\n    def test_dump_does_not_mutate_input(self):\n        state = self.make_workflow_state()\n        snapshot = deepcopy(state)\n        dump_state(state)\n        self.assertEqual(state, snapshot)\n        # nested seen event untouched\n        self.assertEqual(state['seen'], snapshot['seen'])\n\n    def test_load_does_not_mutate_text(self):\n        text = dump_state(self.make_workflow_state())\n        original = text\n        load_state(text)\n        self.assertEqual(text, original)\n\n\nclass CheckpointRejectTest(unittest.TestCase):\n    def assertRejected(self, state, text=None):\n        with self.assertRaises(ValueError):\n            dump_state(state)\n        if text is not None:\n            with self.assertRaises(ValueError):\n                load_state(text)\n\n    def test_duplicate_wrapper_key(self):\n        text = '{\"version\":1,\"version\":2,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_duplicate_nested_key(self):\n        text = ('{\"version\":1,\"state\":{\"stock\":{\"a\":1,\"a\":2},'\n                '\"requests\":{},\"seen\":{}}}')\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_extra_wrapper_key(self):\n        text = '{\"version\":1,\"state\":{},\"extra\":true}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_missing_wrapper_key(self):\n        text = '{\"version\":1}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_missing_state_field(self):\n        text = '{\"version\":1,\"state\":{\"stock\":{},\"requests\":{}}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_extra_state_field(self):\n        text = ('{\"version\":1,\"state\":{\"stock\":{},\"requests\":{},\"seen\":{},'\n                '\"extra\":1}}')\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_zero(self):\n        text = '{\"version\":0,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_two(self):\n        text = '{\"version\":2,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_boolean(self):\n        text = '{\"version\":true,\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_version_string(self):\n        text = '{\"version\":\"1\",\"state\":{}}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_malformed_json(self):\n        text = '{\"version\":1,\"state\":'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_state_not_dict(self):\n        text = '{\"version\":1,\"state\":[1,2,3]}'\n        with self.assertRaises(ValueError):\n            load_state(text)\n\n    def test_stock_invalid_quantity_float(self):\n        self.assertRejected({'stock': {'a': 1.5}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_quantity_boolean(self):\n        self.assertRejected({'stock': {'a': True}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_quantity_negative(self):\n        self.assertRejected({'stock': {'a': -1}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_sku_empty(self):\n        self.assertRejected({'stock': {'': 1}, 'requests': {}, 'seen': {}})\n\n    def test_stock_invalid_sku_boolean(self):\n        self.assertRejected({'stock': {True: 1}, 'requests': {}, 'seen': {}})\n\n    def test_request_invalid_quantity_float(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': 0.5}},\n                             'seen': {}})\n\n    def test_request_invalid_quantity_boolean(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': True}},\n                             'seen': {}})\n\n    def test_request_invalid_quantity_zero(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': {'a': 0}},\n                             'seen': {}})\n\n    def test_request_empty_id(self):\n        self.assertRejected({'stock': {}, 'requests': {'': {}}, 'seen': {}})\n\n    def test_request_lines_not_dict(self):\n        self.assertRejected({'stock': {}, 'requests': {'r': [('a', 1)]},\n                             'seen': {}})\n\n    def test_seen_unaggregated_reserve(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\n                                'lines': [['A', 1], ['A', 2]]}}}\n        self.assertRejected(state)\n\n    def test_seen_reordered_reserve(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\n                                'lines': [['B', 1], ['A', 1]]}}}\n        self.assertRejected(state)\n\n    def test_seen_id_mismatch(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'wrong_id': {'id': 'e1', 'op': 'restock',\n                                       'sku': 'A', 'qty': 1}}}\n        self.assertRejected(state)\n\n    def test_seen_restock_boolean_qty(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\n                                'qty': True}}}\n        self.assertRejected(state)\n\n    def test_seen_restock_float_qty(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\n                                'qty': 1.5}}}\n        self.assertRejected(state)\n\n    def test_seen_reserve_boolean_qty(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'reserve', 'request': 'r',\n                                'lines': [['A', True]]}}}\n        self.assertRejected(state)\n\n    def test_seen_unknown_op(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'bogus'}}}\n        self.assertRejected(state)\n\n    def test_seen_missing_id(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'op': 'restock', 'sku': 'A', 'qty': 1}}}\n        self.assertRejected(state)\n\n    def test_seen_extra_field(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock', 'sku': 'A',\n                                'qty': 1, 'extra': 1}}}\n        self.assertRejected(state)\n\n    def test_dump_invalid_state_raises(self):\n        with self.assertRaises(ValueError):\n            dump_state({'stock': {'a': True}, 'requests': {}, 'seen': {}})\n        with self.assertRaises(ValueError):\n            dump_state({'stock': {}, 'requests': {}, 'seen': {}} if False\n                       else {'stock': {}, 'requests': {}, 'seen': 'x'})\n\n\nclass CheckpointConsistencyTest(unittest.TestCase):\n    def test_loaded_state_verified_equal(self):\n        state = apply_event(\n            apply_event(empty_state(), parse_event(\n                '{\"id\":\"e1\",\"op\":\"restock\",\"sku\":\"A\",\"qty\":4}')),\n            parse_event('{\"id\":\"e2\",\"op\":\"reserve\",\"request\":\"r\",\"lines\":[[\"A\",1]]}'))\n        loaded = load_state(dump_state(state))\n        self.assertEqual(loaded, state)\n\n    def test_space_skus_valid_and_preserved(self):\n        state = {'stock': {' pi pe\\\\|': 3}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock',\n                                'sku': ' pi pe\\\\|', 'qty': 3}}}\n        text = dump_state(state)\n        loaded = load_state(text)\n        self.assertEqual(loaded['stock'][' pi pe\\\\|'], 3)\n        self.assertEqual(loaded['seen']['e']['sku'], ' pi pe\\\\|')\n\n    def test_unicode_preserved(self):\n        state = {'stock': {'sesquiél': 1}, 'requests': {},\n                 'seen': {'e': {'id': 'e', 'op': 'restock',\n                                'sku': 'sesquiél', 'qty': 1}}}\n        text = dump_state(state)\n        self.assertIn('sesquiél', text)\n        self.assertEqual(load_state(text), state)\n\n    def test_empty_request_allowed(self):\n        state = {'stock': {}, 'requests': {'r': {}}, 'seen': {}}\n        self.assertEqual(load_state(dump_state(state)), state)\n\n    def test_canonical_dump_of_seen_restock(self):\n        state = {'stock': {}, 'requests': {},\n                 'seen': {'e': {'qty': 1, 'sku': 'A', 'op': 'restock',\n                                'id': 'e'}}}\n        text = dump_state(state)\n        # sort_keys=True sorts nested keys too\n        self.assertIn('\"state\":{\"requests\":{},\"seen\":{\"e\":{\"id\":\"e\",'\n                      '\"op\":\"restock\",\"qty\":1,\"sku\":\"A\"}},\"stock\":{}}',\n                      text)\n\n\nif __name__ == '__main__':\n    unittest.main()"
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{
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        "text": "test_canonical_dump_of_seen_restock (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_empty_request_allowed (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_loaded_state_verified_equal (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_space_skus_valid_and_preserved (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_unicode_preserved (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_dump_does_not_mutate_input (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_exact_dump_format (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_insertion_order_byte_identical (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_load_accepts_surrounding_whitespace (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_load_does_not_mutate_text (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_load_returns_detached_data (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_round_trip_preserves_fields_and_replay (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_dump_invalid_state_raises (test_checkpoint.CheckpointRejectTest) ... ok\ntest_duplicate_nested_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_duplicate_wrapper_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_extra_state_field (test_checkpoint.CheckpointRejectTest) ... ok\ntest_extra_wrapper_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_malformed_json (test_checkpoint.CheckpointRejectTest) ... ok\ntest_missing_state_field (test_checkpoint.CheckpointRejectTest) ... ok\ntest_missing_wrapper_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_empty_id (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_invalid_quantity_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_invalid_quantity_float (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_invalid_quantity_zero (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_lines_not_dict (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_extra_field (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_id_mismatch (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_missing_id (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_reordered_reserve (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_reserve_boolean_qty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_restock_boolean_qty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_restock_float_qty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_unaggregated_reserve (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_unknown_op (test_checkpoint.CheckpointRejectTest) ... ok\ntest_state_not_dict (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_quantity_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_quantity_float (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_quantity_negative (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_sku_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_sku_empty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_string (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_two (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_zero (test_checkpoint.CheckpointRejectTest) ... ok\n\n----------------------------------------------------------------------\nRan 44 tests in 0.002s\n\nOK\n"
      }
    ],
    "is_error": false,
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{
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      {
        "cache_prompt": false,
        "type": "text",
        "text": "test_canonical_dump_of_seen_restock (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_empty_request_allowed (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_loaded_state_verified_equal (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_space_skus_valid_and_preserved (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_unicode_preserved (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_dump_does_not_mutate_input (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_exact_dump_format (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_insertion_order_byte_identical (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_load_accepts_surrounding_whitespace (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_load_does_not_mutate_text (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_load_returns_detached_data (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_round_trip_preserves_fields_and_replay (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_dump_invalid_state_raises (test_checkpoint.CheckpointRejectTest) ... ok\ntest_duplicate_nested_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_duplicate_wrapper_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_extra_state_field (test_checkpoint.CheckpointRejectTest) ... ok\ntest_extra_wrapper_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_malformed_json (test_checkpoint.CheckpointRejectTest) ... ok\ntest_missing_state_field (test_checkpoint.CheckpointRejectTest) ... ok\ntest_missing_wrapper_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_empty_id (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_invalid_quantity_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_invalid_quantity_float (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_invalid_quantity_zero (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_lines_not_dict (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_extra_field (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_id_mismatch (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_missing_id (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_reordered_reserve (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_reserve_boolean_qty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_restock_boolean_qty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_restock_float_qty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_unaggregated_reserve (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_unknown_op (test_checkpoint.CheckpointRejectTest) ... ok\ntest_state_not_dict (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_quantity_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_quantity_float (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_quantity_negative (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_sku_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_sku_empty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_string (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_two (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_zero (test_checkpoint.CheckpointRejectTest) ... ok\ntest_cancel_canonical (test_codec.CanonicalizationTests) ... ok\ntest_reserve_aggregation_and_sort (test_codec.CanonicalizationTests) ... ok\ntest_reserve_empty_lines (test_codec.CanonicalizationTests) ... ok\ntest_reserve_lines_are_lists_not_tuples (test_codec.CanonicalizationTests) ... ok\ntest_reserve_sort_uses_python_string_ordering (test_codec.CanonicalizationTests) ... ok\ntest_restock_canonical (test_codec.CanonicalizationTests) ... ok\ntest_reserve_return_does_not_alias_input (test_codec.DetachmentTests) ... ok\ntest_returned_dict_is_fresh (test_codec.DetachmentTests) ... ok\ntest_duplicate_nested_object_keys_raise (test_codec.DuplicateKeyTests) ... ok\ntest_duplicate_top_level_keys_raise (test_codec.DuplicateKeyTests) ... ok\ntest_empty_ids_forbidden (test_codec.FieldShapeTests) ... ok\ntest_extra_fields_raise (test_codec.FieldShapeTests) ... ok\ntest_missing_fields_raise (test_codec.FieldShapeTests) ... ok\ntest_request_preserved (test_codec.IdentifierPreservationTests) ... ok\ntest_space_is_nonempty (test_codec.IdentifierPreservationTests) ... ok\ntest_whitespace_backslash_unicode_preserved (test_codec.IdentifierPreservationTests) ... ok\ntest_malformed_json_raises (test_codec.MalformedJsonTests) ... ok\ntest_non_string_input_raises (test_codec.MalformedJsonTests) ... ok\ntest_missing_op_raises (test_codec.NonObjectAndUnsupportedTests) ... ok\ntest_non_object_events_raise (test_codec.NonObjectAndUnsupportedTests) ... ok\ntest_unsupported_op_raises (test_codec.NonObjectAndUnsupportedTests) ... ok\ntest_boolean_quantity_rejected (test_codec.QuantityTests) ... ok\ntest_empty_request_forbidden (test_codec.QuantityTests) ... ok\ntest_empty_sku_forbidden (test_codec.QuantityTests) ... ok\ntest_float_quantity_rejected (test_codec.QuantityTests) ... ok\ntest_zero_and_negative_rejected (test_codec.QuantityTests) ... ok\ntest_imports (test_importer.Smoke) ... ok\ntest_cancel_restores_and_removes_and_reuse (test_reducer.ReducerTest) ... ok\ntest_cancel_unknown_request_raises (test_reducer.ReducerTest) ... ok\ntest_conflicting_event_raises_and_rejects_no_seen_entry (test_reducer.ReducerTest) ... ok\ntest_detachment_input_unchanged_on_failure (test_reducer.ReducerTest) ... ok\ntest_detachment_of_returned_reserve_storage_from_event (test_reducer.ReducerTest) ... ok\ntest_detachment_success_and_no_alias_into_event (test_reducer.ReducerTest) ... ok\ntest_empty_reserve_creates_active_empty_request (test_reducer.ReducerTest) ... ok\ntest_empty_state (test_reducer.ReducerTest) ... ok\ntest_replay_returns_detached_data (test_reducer.ReducerTest) ... ok\ntest_reserve_atomic_deduction (test_reducer.ReducerTest) ... ok\ntest_reserve_insufficient_stock_raises (test_reducer.ReducerTest) ... ok\ntest_reserve_requires_all_sku_present (test_reducer.ReducerTest) ... ok\ntest_reserve_requires_inactive_request (test_reducer.ReducerTest) ... ok\ntest_reserve_sufficient_stock_aggregate_deduces (test_reducer.ReducerTest) ... ok\ntest_reserve_unknown_stock_raises (test_reducer.ReducerTest) ... ok\ntest_restock_aliasing_does_not_affect_input (test_reducer.ReducerTest) ... ok\ntest_restock_introduces_and_adds (test_reducer.ReducerTest) ... ok\ntest_seen_check_before_business_preconditions (test_reducer.ReducerTest) ... ok\ntest_seen_conflicting_event_raises_even_after_cancel (test_reducer.ReducerTest) ... ok\ntest_seen_replay_equal_event_returns_no_change_detached (test_reducer.ReducerTest) ... ok\n\n----------------------------------------------------------------------\nRan 91 tests in 0.003s\n\nOK\n"
      }
    ],
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{
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  "timestamp": "2026-10-19T08:46:58.494614",
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        "text": "'{\"state\":{\"requests\":{},\"seen\":{\"e1\":{\"id\":\"e1\",\"op\":\"restock\",\"qty\":5,\"sku\":\"A\"}},\"stock\":{\"A\":5}},\"version\":1}\\n'\nseen in dump: True\nseen preserved: True\n"
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    "exit_code": 0,
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  "responses_reasoning_item": null,
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{
  "id": "b6c16e86-83a1-468f-bc83-168fa2de1153",
  "timestamp": "2026-10-19T08:47:04.427137",
  "source": "environment",
  "parent_id": "79d77ca0-9f87-4649-94fc-8aac3e4f1920",
  "tool_name": "terminal",
  "tool_call_id": "call_87a5990b181741fa97f815b0",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "import json\nfrom copy import deepcopy\nfrom codec import parse_event, read_json, string, integer\n\n\ndef _validate_seen_event_quantities(event):\n    \"\"\"Reject bool/float quantities inside a canonical seen event.\n\n    Booleans are a subclass of int, so codec.integer alone would accept them;\n    floats fail isinstance(x, int) but are validated here for completeness.\n    \"\"\"\n    op = event.get('op')\n    if op == 'restock':\n        if isinstance(event['qty'], bool):\n            raise ValueError('boolean quantity')\n    elif op == 'reserve':\n        for pair in event['lines']:\n            if isinstance(pair, (list, tuple)) and len(pair) == 2:\n                sku, qty = pair\n                if not string(sku) or isinstance(qty, bool) or not integer(qty, 1):\n                    raise ValueError('reserve line quantity')\n            else:\n                raise ValueError('reserve line shape')\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 isinstance(qty, bool) 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 isinstance(qty, bool) 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        if event.get('id') != event_id:\n            raise ValueError('seen id mismatch')\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:\n            raise ValueError('noncanonical seen event')\n        _validate_seen_event_quantities(event)\n    return state\n\n\ndef dump_state(state):\n    validate(state)\n    state = deepcopy(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']))"
      }
    ],
    "is_error": false,
    "command": "cat /workspace/checkpoint.py",
    "exit_code": 0,
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    },
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    "kind": "TerminalObservation"
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{
  "id": "e28b97f9-ed15-458c-aac4-6f93f8c10439",
  "timestamp": "2026-10-19T08:47:40.474086",
  "source": "agent",
  "parent_id": "b6c16e86-83a1-468f-bc83-168fa2de1153",
  "responses_reasoning_item": null,
  "action": {
    "message": "Implemented and tested checkpoint.py and test_checkpoint.py.\n\n## Changes to checkpoint.py (owned file)\nFixed the seeded defects and added boolean/float quantity rejection:\n1. **`dump_state`** was using `sort_keys=False` → now `sort_keys=True` (required for byte-identical text across dict insertion orders).\n2. **`dump_state`** was emptying the seen field (`state['seen'] = {}`) — REMOVED. It now dumps the complete state including all seen records.\n3. **Validation of bool/floats as quantities everywhere**: `stock`, `requests`, and `seen` event quantities now reject `bool` (a subclass of `int`, which `codec.integer` alone would accept). Added `_validate_seen_event_quantities` to reject boolean/float quantities inside seen restock qty and reserve line quantities, since `parse_event`'s `integer()` helper does not reject bools.\n4. Added explicit seen `id == key` mismatch rejection; preserved existing `validate`/`dump_state`/`load_state` public interfaces. Kept `deepcopy` on dump/load for detachment and non-mutation.\n5. `load_state` unchanged in logic: uses `read_json` (rejects duplicate keys, accepts whitespace), checks exact wrapper key set, rejects bool/non-1 version via `type(...) is not int`, and deep-copies the validated state.\n\nNote: with `sort_keys=True`, the wrapper keys sort lexicographically in the byte output, so a dumped empty state is `{\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}},\"version\":1}\\n` (the README's \"{\"version\":1,...}\" describes the logical wrapper; `sort_keys=True` is the governing serialization requirement).\n\n## Changes to test_checkpoint.py\nAdded 44 unittest regression tests covering: round-trip preserves all three fields and replay (including seen of cancelled requests + fresh reuse), exact dump text/format (ensure_ascii=False, sort_keys=True, separators, single trailing newline), byte-identical dump for reordered insertion order, surrounding-whitespace acceptance, rejection of duplicate/extra/missing wrapper & state keys, bool/non-1/string version, malformed JSON, invalid types/quantities (floats/bools/negatives/zeros/empty skus), invalid seen (unaggregated/reordered reserve, id mismatch, missing/extra fields, unknown op, bool/float quantities), dump of invalid state raises ValueError, and dump/load non-mutation of inputs.\n\n## Dependencies on codec behavior\n- `validate` calls `parse_event(json.dumps(event, ensure_ascii=False))` for each seen value and requires equality — matching the spec's \"unaggregated/reordered reserve lines are invalid\". Because `codec.integer` does not reject booleans, checkpoint adds its own bool rejection for seen quantities. `read_json` supplies duplicate-key rejection and whitespace tolerance.\n\n## Test command & results\n`cd /workspace && PYTHONDONTWRITEBYTECODE=1 python3 -m unittest -v`\nRan 91 tests (44 checkpoint + codec/reducer/importer) — all OK. Module-level run `python3 -m unittest test_checkpoint -v` → 44 tests OK.\n\n## Remaining uncertainty\n- Interpretation of wrapper key order: `sort_keys=True` sorts wrapper keys, so dumped text is `{\"state\":...,\"version\":...}`. I followed the explicit `sort_keys=True` requirement (also necessary for the byte-identical requirement). If the external checker instead requires literal `{\"version\":1,\"state\":...}` byte order, that would be mutually exclusive with `sort_keys=True`; my implementation matches the stated json.dumps parameter spec.",
    "kind": "FinishAction"
  },
  "tool_name": "finish",
  "tool_call_id": "call_8135b496086243798ce631c5",
  "tool_call": {
    "id": "call_8135b496086243798ce631c5",
    "responses_item_id": null,
    "name": "finish",
    "arguments": "{\"message\": \"Implemented and tested checkpoint.py and test_checkpoint.py.\\n\\n## Changes to checkpoint.py (owned file)\\nFixed the seeded defects and added boolean/float quantity rejection:\\n1. **`dump_state`** was using `sort_keys=False` \\u2192 now `sort_keys=True` (required for byte-identical text across dict insertion orders).\\n2. **`dump_state`** was emptying the seen field (`state['seen'] = {}`) \\u2014 REMOVED. It now dumps the complete state including all seen records.\\n3. **Validation of bool/floats as quantities everywhere**: `stock`, `requests`, and `seen` event quantities now reject `bool` (a subclass of `int`, which `codec.integer` alone would accept). Added `_validate_seen_event_quantities` to reject boolean/float quantities inside seen restock qty and reserve line quantities, since `parse_event`'s `integer()` helper does not reject bools.\\n4. Added explicit seen `id == key` mismatch rejection; preserved existing `validate`/`dump_state`/`load_state` public interfaces. Kept `deepcopy` on dump/load for detachment and non-mutation.\\n5. `load_state` unchanged in logic: uses `read_json` (rejects duplicate keys, accepts whitespace), checks exact wrapper key set, rejects bool/non-1 version via `type(...) is not int`, and deep-copies the validated state.\\n\\nNote: with `sort_keys=True`, the wrapper keys sort lexicographically in the byte output, so a dumped empty state is `{\\\"state\\\":{\\\"requests\\\":{},\\\"seen\\\":{},\\\"stock\\\":{}},\\\"version\\\":1}\\\\n` (the README's \\\"{\\\"version\\\":1,...}\\\" describes the logical wrapper; `sort_keys=True` is the governing serialization requirement).\\n\\n## Changes to test_checkpoint.py\\nAdded 44 unittest regression tests covering: round-trip preserves all three fields and replay (including seen of cancelled requests + fresh reuse), exact dump text/format (ensure_ascii=False, sort_keys=True, separators, single trailing newline), byte-identical dump for reordered insertion order, surrounding-whitespace acceptance, rejection of duplicate/extra/missing wrapper & state keys, bool/non-1/string version, malformed JSON, invalid types/quantities (floats/bools/negatives/zeros/empty skus), invalid seen (unaggregated/reordered reserve, id mismatch, missing/extra fields, unknown op, bool/float quantities), dump of invalid state raises ValueError, and dump/load non-mutation of inputs.\\n\\n## Dependencies on codec behavior\\n- `validate` calls `parse_event(json.dumps(event, ensure_ascii=False))` for each seen value and requires equality \\u2014 matching the spec's \\\"unaggregated/reordered reserve lines are invalid\\\". Because `codec.integer` does not reject booleans, checkpoint adds its own bool rejection for seen quantities. `read_json` supplies duplicate-key rejection and whitespace tolerance.\\n\\n## Test command & results\\n`cd /workspace && PYTHONDONTWRITEBYTECODE=1 python3 -m unittest -v`\\nRan 91 tests (44 checkpoint + codec/reducer/importer) \\u2014 all OK. Module-level run `python3 -m unittest test_checkpoint -v` \\u2192 44 tests OK.\\n\\n## Remaining uncertainty\\n- Interpretation of wrapper key order: `sort_keys=True` sorts wrapper keys, so dumped text is `{\\\"state\\\":...,\\\"version\\\":...}`. I followed the explicit `sort_keys=True` requirement (also necessary for the byte-identical requirement). If the external checker instead requires literal `{\\\"version\\\":1,\\\"state\\\":...}` byte order, that would be mutually exclusive with `sort_keys=True`; my implementation matches the stated json.dumps parameter spec.\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792417624-Xe5XaHoWoosPEeTSov5Z",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "finish: {\"message\": \"Implemented and tested checkpoint.py and test_checkpoint.py.\\n\\n## Changes to checkpoint.py (owned file)\\nFixed the seeded defects and added boolean/float quantity rejection:\\n1. **`dump_state`** was using `sort_keys=False` \\u2192 now `sort_keys=True` (required for byte-identical text across dict insertion orders).\\n2. **`dump_state`** was emptying the seen field (`state['seen'] = {}`) \\u2014 REMOVED. It now dumps the complete state including all seen records.\\n3. **Validation of bool/floats as quantities everywhere**: `stock`, `requests`, and `seen` event quantities now reject `bool` (a subclass of `int`, which `codec.integer` alone would accept). Added `_validate_seen_event_quantities` to reject boolean/float quantities inside seen restock qty and reserve line quantities, since `parse_event`'s `integer()` helper does not reject bools.\\n4. Added explicit seen `id == key` mismatch rejection; preserved existing `validate`/`dump_state`/`load_state` public interfaces. Kept `deepcopy` on dump/load for detachment and non-mutation.\\n5. `load_state` unchanged in logic: uses `read_json` (rejects duplicate keys, accepts whitespace), checks exact wrapper key set, rejects bool/non-1 version via `type(...) is not int`, and deep-copies the validated state.\\n\\nNote: with `sort_keys=True`, the wrapper keys sort lexicographically in the byte output, so a dumped empty state is `{\\\"state\\\":{\\\"requests\\\":{},\\\"seen\\\":{},\\\"stock\\\":{}},\\\"version\\\":1}\\\\n` (the README's \\\"{\\\"version\\\":1,...}\\\" describes the logical wrapper; `sort_keys=True` is the governing serialization requirement).\\n\\n## Changes to test_checkpoint.py\\nAdded 44 unittest regression tests covering: round-trip preserves all three fields and replay (including seen of cancelled requests + fresh reuse), exact dump text/format (ensure_ascii=False, sort_keys=True, separators, single trailing newline), byte-identical dump for reordered insertion order, surrounding-whitespace acceptance, rejection of duplicate/extra/missing wrapper & state keys, bool/non-1/string version, malformed JSON, invalid types/quantities (floats/bools/negatives/zeros/empty skus), invalid seen (unaggregated/reordered reserve, id mismatch, missing/extra fields, unknown op, bool/float quantities), dump of invalid state raises ValueError, and dump/load non-mutation of inputs.\\n\\n## Dependencies on codec behavior\\n- `validate` calls `parse_event(json.dumps(event, ensure_ascii=False))` for each seen value and requires equality \\u2014 matching the spec's \\\"unaggregated/reordered reserve lines are invalid\\\". Because `codec.integer` does not reject booleans, checkpoint adds its own bool rejection for seen quantities. `read_json` supplies duplicate-key rejection and whitespace tolerance.\\n\\n## Test command & results\\n`cd /workspace && PYTHONDONTWRITEBYTECODE=1 python3 -m unittest -v`\\nRan 91 tests (44 checkpoint + codec/reducer/importer) \\u2014 all OK. Module-level run `python3 -m unittest test_checkpoint -v` \\u2192 44 tests OK.\\n\\n## Remaining uncertainty\\n- Interpretation of wrapper key order: `sort_keys=True` sorts wrapper keys, so dumped text is `{\\\"state\\\":...,\\\"version\\\":...}`. I followed the explicit `sort_keys=True` requirement (also necessary for the byte-identical requirement). If the external checker instead requires literal `{\\\"version\\\":1,\\\"state\\\":...}` byte order, that would be mutually exclusive with `sort_keys=True`; my implementation matches the stated json.dumps parameter spec.\"}",
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{
  "id": "92eba143-54d8-4e25-8dc8-8cf0f2281bc2",
  "timestamp": "2026-10-19T08:47:40.478776",
  "source": "environment",
  "parent_id": "e28b97f9-ed15-458c-aac4-6f93f8c10439",
  "tool_name": "finish",
  "tool_call_id": "call_8135b496086243798ce631c5",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Implemented and tested checkpoint.py and test_checkpoint.py.\n\n## Changes to checkpoint.py (owned file)\nFixed the seeded defects and added boolean/float quantity rejection:\n1. **`dump_state`** was using `sort_keys=False` → now `sort_keys=True` (required for byte-identical text across dict insertion orders).\n2. **`dump_state`** was emptying the seen field (`state['seen'] = {}`) — REMOVED. It now dumps the complete state including all seen records.\n3. **Validation of bool/floats as quantities everywhere**: `stock`, `requests`, and `seen` event quantities now reject `bool` (a subclass of `int`, which `codec.integer` alone would accept). Added `_validate_seen_event_quantities` to reject boolean/float quantities inside seen restock qty and reserve line quantities, since `parse_event`'s `integer()` helper does not reject bools.\n4. Added explicit seen `id == key` mismatch rejection; preserved existing `validate`/`dump_state`/`load_state` public interfaces. Kept `deepcopy` on dump/load for detachment and non-mutation.\n5. `load_state` unchanged in logic: uses `read_json` (rejects duplicate keys, accepts whitespace), checks exact wrapper key set, rejects bool/non-1 version via `type(...) is not int`, and deep-copies the validated state.\n\nNote: with `sort_keys=True`, the wrapper keys sort lexicographically in the byte output, so a dumped empty state is `{\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}},\"version\":1}\\n` (the README's \"{\"version\":1,...}\" describes the logical wrapper; `sort_keys=True` is the governing serialization requirement).\n\n## Changes to test_checkpoint.py\nAdded 44 unittest regression tests covering: round-trip preserves all three fields and replay (including seen of cancelled requests + fresh reuse), exact dump text/format (ensure_ascii=False, sort_keys=True, separators, single trailing newline), byte-identical dump for reordered insertion order, surrounding-whitespace acceptance, rejection of duplicate/extra/missing wrapper & state keys, bool/non-1/string version, malformed JSON, invalid types/quantities (floats/bools/negatives/zeros/empty skus), invalid seen (unaggregated/reordered reserve, id mismatch, missing/extra fields, unknown op, bool/float quantities), dump of invalid state raises ValueError, and dump/load non-mutation of inputs.\n\n## Dependencies on codec behavior\n- `validate` calls `parse_event(json.dumps(event, ensure_ascii=False))` for each seen value and requires equality — matching the spec's \"unaggregated/reordered reserve lines are invalid\". Because `codec.integer` does not reject booleans, checkpoint adds its own bool rejection for seen quantities. `read_json` supplies duplicate-key rejection and whitespace tolerance.\n\n## Test command & results\n`cd /workspace && PYTHONDONTWRITEBYTECODE=1 python3 -m unittest -v`\nRan 91 tests (44 checkpoint + codec/reducer/importer) — all OK. Module-level run `python3 -m unittest test_checkpoint -v` → 44 tests OK.\n\n## Remaining uncertainty\n- Interpretation of wrapper key order: `sort_keys=True` sorts wrapper keys, so dumped text is `{\"state\":...,\"version\":...}`. I followed the explicit `sort_keys=True` requirement (also necessary for the byte-identical requirement). If the external checker instead requires literal `{\"version\":1,\"state\":...}` byte order, that would be mutually exclusive with `sort_keys=True`; my implementation matches the stated json.dumps parameter spec."
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