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    },
    {
      "kind": "rpc",
      "rpc_id": 3000000001,
      "from_pid": 8,
      "to_pid": 8,
      "method_id": 1,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-catalog",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000002
    },
    {
      "kind": "rpc",
      "rpc_id": 3000000002,
      "from_pid": 8,
      "to_pid": 8,
      "method_id": 1,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-catalog",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000004
    },
    {
      "kind": "rpc",
      "rpc_id": 1000000011,
      "from_pid": 7,
      "to_pid": 8,
      "method_id": 2,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-gateway",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000010
    },
    {
      "kind": "rpc",
      "rpc_id": 3000000003,
      "from_pid": 8,
      "to_pid": 8,
      "method_id": 1,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-catalog",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000010
    },
    {
      "kind": "rpc",
      "rpc_id": 1000000015,
      "from_pid": 7,
      "to_pid": 8,
      "method_id": 2,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-gateway",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000014
    },
    {
      "kind": "rpc",
      "rpc_id": 3000000004,
      "from_pid": 8,
      "to_pid": 8,
      "method_id": 1,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-catalog",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000014
    },
    {
      "kind": "rpc",
      "rpc_id": 1000000007,
      "from_pid": 7,
      "to_pid": 8,
      "method_id": 3,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-gateway",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-checkout",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000002
    },
    {
      "kind": "rpc",
      "rpc_id": 1000000008,
      "from_pid": 7,
      "to_pid": 8,
      "method_id": 3,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-gateway",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-checkout",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000004
    },
    {
      "kind": "rpc",
      "rpc_id": 4000000001,
      "from_pid": 8,
      "to_pid": 8,
      "method_id": 4,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-checkout",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-inventory",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000002
    },
    {
      "kind": "rpc",
      "rpc_id": 4000000002,
      "from_pid": 8,
      "to_pid": 8,
      "method_id": 4,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-checkout",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-inventory",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000004
    },
    {
      "kind": "rpc",
      "rpc_id": 1000000012,
      "from_pid": 7,
      "to_pid": 8,
      "method_id": 3,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-gateway",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-checkout",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000010
    },
    {
      "kind": "rpc",
      "rpc_id": 4000000003,
      "from_pid": 8,
      "to_pid": 8,
      "method_id": 4,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-checkout",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-inventory",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000010
    },
    {
      "kind": "rpc",
      "rpc_id": 1000000016,
      "from_pid": 7,
      "to_pid": 8,
      "method_id": 3,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-gateway",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-checkout",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000014
    },
    {
      "kind": "rpc",
      "rpc_id": 4000000004,
      "from_pid": 8,
      "to_pid": 8,
      "method_id": 4,
      "evidence": [
        "semantic_rpc_events"
      ],
      "from_process_id": "fdshop-b7b99f7b08-inventory-timeout-checkout",
      "to_process_id": "fdshop-b7b99f7b08-inventory-timeout-inventory",
      "from_process_generation": 1,
      "to_process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "trace_id_hi": 0,
      "trace_id_lo": 1000000014
    }
  ],
  "causes": [
    {
      "schema": 1,
      "kind": "fault_triggered",
      "service": "inventory",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-inventory",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
      "tid": 9,
      "monotonic_ns": 97614128154,
      "source_file": "test/shop/service.py",
      "source_line": 165,
      "rpc_id": 4000000001,
      "trace_id": 1000000002,
      "parent_rpc_id": 1000000007,
      "request_id": "inventory_timeout-1",
      "code": "inventory_latency",
      "delay_ms": 900,
      "reason": "Injected 900 ms inventory delay exceeds the checkout RPC timeout of 300 ms.",
      "log_path": "inventory/events.jsonl",
      "log_line": 3,
      "native_rpc_matched": true,
      "evidence_class": "application_self_report",
      "assessment": "corroborated_rpc",
      "source": {
        "file": "test/shop/service.py",
        "line": 165,
        "sha256": "3b789a99231804fa3e980fb878751438c0e365c9e000fd52d92fb045e7c586a3",
        "lines": [
          {
            "line": 162,
            "text": "            if scenario == \"inventory_shortage\":"
          },
          {
            "line": 163,
            "text": "                return failure(ctx, \"inventory_shortage\", \"Injected stock budget is zero; requested quantity cannot be reserved.\", 409)"
          },
          {
            "line": 164,
            "text": "            if scenario == \"inventory_timeout\":"
          },
          {
            "line": 165,
            "text": "                emit(\"fault_triggered\", ctx, code=\"inventory_latency\", delay_ms=900,"
          },
          {
            "line": 166,
            "text": "                     reason=\"Injected 900 ms inventory delay exceeds the checkout RPC timeout of 300 ms.\")"
          },
          {
            "line": 167,
            "text": "                time.sleep(0.9)"
          },
          {
            "line": 168,
            "text": "            with LOCK:"
          }
        ],
        "verification": "immutable_bundle_hash"
      }
    },
    {
      "schema": 1,
      "kind": "fault_triggered",
      "service": "inventory",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-inventory",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
      "tid": 10,
      "monotonic_ns": 97916335431,
      "source_file": "test/shop/service.py",
      "source_line": 165,
      "rpc_id": 4000000002,
      "trace_id": 1000000004,
      "parent_rpc_id": 1000000008,
      "request_id": "inventory_timeout-0",
      "code": "inventory_latency",
      "delay_ms": 900,
      "reason": "Injected 900 ms inventory delay exceeds the checkout RPC timeout of 300 ms.",
      "log_path": "inventory/events.jsonl",
      "log_line": 5,
      "native_rpc_matched": true,
      "evidence_class": "application_self_report",
      "assessment": "corroborated_rpc",
      "source": {
        "file": "test/shop/service.py",
        "line": 165,
        "sha256": "3b789a99231804fa3e980fb878751438c0e365c9e000fd52d92fb045e7c586a3",
        "lines": [
          {
            "line": 162,
            "text": "            if scenario == \"inventory_shortage\":"
          },
          {
            "line": 163,
            "text": "                return failure(ctx, \"inventory_shortage\", \"Injected stock budget is zero; requested quantity cannot be reserved.\", 409)"
          },
          {
            "line": 164,
            "text": "            if scenario == \"inventory_timeout\":"
          },
          {
            "line": 165,
            "text": "                emit(\"fault_triggered\", ctx, code=\"inventory_latency\", delay_ms=900,"
          },
          {
            "line": 166,
            "text": "                     reason=\"Injected 900 ms inventory delay exceeds the checkout RPC timeout of 300 ms.\")"
          },
          {
            "line": 167,
            "text": "                time.sleep(0.9)"
          },
          {
            "line": 168,
            "text": "            with LOCK:"
          }
        ],
        "verification": "immutable_bundle_hash"
      }
    },
    {
      "schema": 1,
      "kind": "fault_triggered",
      "service": "inventory",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-inventory",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
      "tid": 11,
      "monotonic_ns": 98218124615,
      "source_file": "test/shop/service.py",
      "source_line": 165,
      "rpc_id": 4000000003,
      "trace_id": 1000000010,
      "parent_rpc_id": 1000000012,
      "request_id": "inventory_timeout-2",
      "code": "inventory_latency",
      "delay_ms": 900,
      "reason": "Injected 900 ms inventory delay exceeds the checkout RPC timeout of 300 ms.",
      "log_path": "inventory/events.jsonl",
      "log_line": 7,
      "native_rpc_matched": true,
      "evidence_class": "application_self_report",
      "assessment": "corroborated_rpc",
      "source": {
        "file": "test/shop/service.py",
        "line": 165,
        "sha256": "3b789a99231804fa3e980fb878751438c0e365c9e000fd52d92fb045e7c586a3",
        "lines": [
          {
            "line": 162,
            "text": "            if scenario == \"inventory_shortage\":"
          },
          {
            "line": 163,
            "text": "                return failure(ctx, \"inventory_shortage\", \"Injected stock budget is zero; requested quantity cannot be reserved.\", 409)"
          },
          {
            "line": 164,
            "text": "            if scenario == \"inventory_timeout\":"
          },
          {
            "line": 165,
            "text": "                emit(\"fault_triggered\", ctx, code=\"inventory_latency\", delay_ms=900,"
          },
          {
            "line": 166,
            "text": "                     reason=\"Injected 900 ms inventory delay exceeds the checkout RPC timeout of 300 ms.\")"
          },
          {
            "line": 167,
            "text": "                time.sleep(0.9)"
          },
          {
            "line": 168,
            "text": "            with LOCK:"
          }
        ],
        "verification": "immutable_bundle_hash"
      }
    },
    {
      "schema": 1,
      "kind": "failure",
      "service": "inventory",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-inventory",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
      "tid": 9,
      "monotonic_ns": 98514871189,
      "source_file": "test/shop/service.py",
      "source_line": 170,
      "rpc_id": 4000000001,
      "trace_id": 1000000002,
      "parent_rpc_id": 1000000007,
      "request_id": "inventory_timeout-1",
      "code": "expired_before_reservation",
      "reason": "Caller deadline expired before stock mutation; no reservation was created.",
      "status": 504,
      "log_path": "inventory/events.jsonl",
      "log_line": 8,
      "native_rpc_matched": true,
      "evidence_class": "application_self_report",
      "assessment": "corroborated_rpc_status",
      "source": {
        "file": "test/shop/service.py",
        "line": 170,
        "sha256": "3b789a99231804fa3e980fb878751438c0e365c9e000fd52d92fb045e7c586a3",
        "lines": [
          {
            "line": 167,
            "text": "                time.sleep(0.9)"
          },
          {
            "line": 168,
            "text": "            with LOCK:"
          },
          {
            "line": 169,
            "text": "                if time.monotonic_ns() >= deadline:"
          },
          {
            "line": 170,
            "text": "                    return failure(ctx, \"expired_before_reservation\", \"Caller deadline expired before stock mutation; no reservation was created.\", 504)"
          },
          {
            "line": 171,
            "text": "                if order not in STATE[\"reservations\"]:"
          },
          {
            "line": 172,
            "text": "                    if STATE[\"stock\"] < quantity:"
          },
          {
            "line": 173,
            "text": "                        return failure(ctx, \"stock_exhausted\", \"Insufficient remaining stock.\", 409)"
          }
        ],
        "verification": "immutable_bundle_hash"
      }
    },
    {
      "schema": 1,
      "kind": "fault_triggered",
      "service": "inventory",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-inventory",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
      "tid": 9,
      "monotonic_ns": 98519692746,
      "source_file": "test/shop/service.py",
      "source_line": 165,
      "rpc_id": 4000000004,
      "trace_id": 1000000014,
      "parent_rpc_id": 1000000016,
      "request_id": "inventory_timeout-3",
      "code": "inventory_latency",
      "delay_ms": 900,
      "reason": "Injected 900 ms inventory delay exceeds the checkout RPC timeout of 300 ms.",
      "log_path": "inventory/events.jsonl",
      "log_line": 11,
      "native_rpc_matched": true,
      "evidence_class": "application_self_report",
      "assessment": "corroborated_rpc",
      "source": {
        "file": "test/shop/service.py",
        "line": 165,
        "sha256": "3b789a99231804fa3e980fb878751438c0e365c9e000fd52d92fb045e7c586a3",
        "lines": [
          {
            "line": 162,
            "text": "            if scenario == \"inventory_shortage\":"
          },
          {
            "line": 163,
            "text": "                return failure(ctx, \"inventory_shortage\", \"Injected stock budget is zero; requested quantity cannot be reserved.\", 409)"
          },
          {
            "line": 164,
            "text": "            if scenario == \"inventory_timeout\":"
          },
          {
            "line": 165,
            "text": "                emit(\"fault_triggered\", ctx, code=\"inventory_latency\", delay_ms=900,"
          },
          {
            "line": 166,
            "text": "                     reason=\"Injected 900 ms inventory delay exceeds the checkout RPC timeout of 300 ms.\")"
          },
          {
            "line": 167,
            "text": "                time.sleep(0.9)"
          },
          {
            "line": 168,
            "text": "            with LOCK:"
          }
        ],
        "verification": "immutable_bundle_hash"
      }
    },
    {
      "schema": 1,
      "kind": "failure",
      "service": "inventory",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-inventory",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
      "tid": 10,
      "monotonic_ns": 98817105893,
      "source_file": "test/shop/service.py",
      "source_line": 170,
      "rpc_id": 4000000002,
      "trace_id": 1000000004,
      "parent_rpc_id": 1000000008,
      "request_id": "inventory_timeout-0",
      "code": "expired_before_reservation",
      "reason": "Caller deadline expired before stock mutation; no reservation was created.",
      "status": 504,
      "log_path": "inventory/events.jsonl",
      "log_line": 12,
      "native_rpc_matched": true,
      "evidence_class": "application_self_report",
      "assessment": "corroborated_rpc_status",
      "source": {
        "file": "test/shop/service.py",
        "line": 170,
        "sha256": "3b789a99231804fa3e980fb878751438c0e365c9e000fd52d92fb045e7c586a3",
        "lines": [
          {
            "line": 167,
            "text": "                time.sleep(0.9)"
          },
          {
            "line": 168,
            "text": "            with LOCK:"
          },
          {
            "line": 169,
            "text": "                if time.monotonic_ns() >= deadline:"
          },
          {
            "line": 170,
            "text": "                    return failure(ctx, \"expired_before_reservation\", \"Caller deadline expired before stock mutation; no reservation was created.\", 504)"
          },
          {
            "line": 171,
            "text": "                if order not in STATE[\"reservations\"]:"
          },
          {
            "line": 172,
            "text": "                    if STATE[\"stock\"] < quantity:"
          },
          {
            "line": 173,
            "text": "                        return failure(ctx, \"stock_exhausted\", \"Insufficient remaining stock.\", 409)"
          }
        ],
        "verification": "immutable_bundle_hash"
      }
    },
    {
      "schema": 1,
      "kind": "failure",
      "service": "inventory",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-inventory",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
      "tid": 11,
      "monotonic_ns": 99118705223,
      "source_file": "test/shop/service.py",
      "source_line": 170,
      "rpc_id": 4000000003,
      "trace_id": 1000000010,
      "parent_rpc_id": 1000000012,
      "request_id": "inventory_timeout-2",
      "code": "expired_before_reservation",
      "reason": "Caller deadline expired before stock mutation; no reservation was created.",
      "status": 504,
      "log_path": "inventory/events.jsonl",
      "log_line": 14,
      "native_rpc_matched": true,
      "evidence_class": "application_self_report",
      "assessment": "corroborated_rpc_status",
      "source": {
        "file": "test/shop/service.py",
        "line": 170,
        "sha256": "3b789a99231804fa3e980fb878751438c0e365c9e000fd52d92fb045e7c586a3",
        "lines": [
          {
            "line": 167,
            "text": "                time.sleep(0.9)"
          },
          {
            "line": 168,
            "text": "            with LOCK:"
          },
          {
            "line": 169,
            "text": "                if time.monotonic_ns() >= deadline:"
          },
          {
            "line": 170,
            "text": "                    return failure(ctx, \"expired_before_reservation\", \"Caller deadline expired before stock mutation; no reservation was created.\", 504)"
          },
          {
            "line": 171,
            "text": "                if order not in STATE[\"reservations\"]:"
          },
          {
            "line": 172,
            "text": "                    if STATE[\"stock\"] < quantity:"
          },
          {
            "line": 173,
            "text": "                        return failure(ctx, \"stock_exhausted\", \"Insufficient remaining stock.\", 409)"
          }
        ],
        "verification": "immutable_bundle_hash"
      }
    },
    {
      "schema": 1,
      "kind": "failure",
      "service": "inventory",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-inventory",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
      "tid": 9,
      "monotonic_ns": 99420264675,
      "source_file": "test/shop/service.py",
      "source_line": 170,
      "rpc_id": 4000000004,
      "trace_id": 1000000014,
      "parent_rpc_id": 1000000016,
      "request_id": "inventory_timeout-3",
      "code": "expired_before_reservation",
      "reason": "Caller deadline expired before stock mutation; no reservation was created.",
      "status": 504,
      "log_path": "inventory/events.jsonl",
      "log_line": 16,
      "native_rpc_matched": true,
      "evidence_class": "application_self_report",
      "assessment": "corroborated_rpc_status",
      "source": {
        "file": "test/shop/service.py",
        "line": 170,
        "sha256": "3b789a99231804fa3e980fb878751438c0e365c9e000fd52d92fb045e7c586a3",
        "lines": [
          {
            "line": 167,
            "text": "                time.sleep(0.9)"
          },
          {
            "line": 168,
            "text": "            with LOCK:"
          },
          {
            "line": 169,
            "text": "                if time.monotonic_ns() >= deadline:"
          },
          {
            "line": 170,
            "text": "                    return failure(ctx, \"expired_before_reservation\", \"Caller deadline expired before stock mutation; no reservation was created.\", 504)"
          },
          {
            "line": 171,
            "text": "                if order not in STATE[\"reservations\"]:"
          },
          {
            "line": 172,
            "text": "                    if STATE[\"stock\"] < quantity:"
          },
          {
            "line": 173,
            "text": "                        return failure(ctx, \"stock_exhausted\", \"Insufficient remaining stock.\", 409)"
          }
        ],
        "verification": "immutable_bundle_hash"
      }
    }
  ],
  "events": [
    {
      "schema": 1,
      "kind": "process_started",
      "service": "cart",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
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      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
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      "monotonic_ns": 95970945746,
      "source_file": "test/shop/service.py",
      "source_line": 290,
      "log_path": "cart/events.jsonl",
      "log_line": 1,
      "native_rpc_matched": false
    },
    {
      "schema": 1,
      "kind": "server_begin",
      "service": "cart",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
      "tid": 10,
      "monotonic_ns": 97607749543,
      "source_file": "test/shop/service.py",
      "source_line": 279,
      "rpc_id": 1000000006,
      "trace_id": 1000000002,
      "parent_rpc_id": 1000000001,
      "request_id": "inventory_timeout-1",
      "path": "/cart",
      "log_path": "cart/events.jsonl",
      "log_line": 2,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
      "kind": "server_begin",
      "service": "cart",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
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      "monotonic_ns": 97607792388,
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      "parent_rpc_id": 1000000003,
      "request_id": "inventory_timeout-0",
      "path": "/cart",
      "log_path": "cart/events.jsonl",
      "log_line": 3,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
      "kind": "client_begin",
      "service": "cart",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
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      "monotonic_ns": 97607914161,
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      "trace_id": 1000000002,
      "rpc_id": 3000000001,
      "parent_rpc_id": 1000000006,
      "request_id": "inventory_timeout-1",
      "peer": "catalog",
      "path": "/products",
      "timeout_ms": 3000,
      "log_path": "cart/events.jsonl",
      "log_line": 4,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
      "kind": "client_begin",
      "service": "cart",
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      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
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      "monotonic_ns": 97608126284,
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      "trace_id": 1000000004,
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      "request_id": "inventory_timeout-0",
      "peer": "catalog",
      "path": "/products",
      "timeout_ms": 3000,
      "log_path": "cart/events.jsonl",
      "log_line": 5,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
      "kind": "client_end",
      "service": "cart",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
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      "monotonic_ns": 97610332610,
      "source_file": "test/shop/service.py",
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      "trace_id": 1000000002,
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      "request_id": "inventory_timeout-1",
      "peer": "catalog",
      "path": "/products",
      "status": 200,
      "log_path": "cart/events.jsonl",
      "log_line": 6,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
      "kind": "server_end",
      "service": "cart",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
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      "monotonic_ns": 97610487660,
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      "request_id": "inventory_timeout-1",
      "path": "/cart",
      "status": 200,
      "log_path": "cart/events.jsonl",
      "log_line": 7,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
      "kind": "client_end",
      "service": "cart",
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      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
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      "monotonic_ns": 97610678788,
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      "peer": "catalog",
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      "log_path": "cart/events.jsonl",
      "log_line": 8,
      "native_rpc_matched": true
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    {
      "schema": 1,
      "kind": "server_end",
      "service": "cart",
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      "request_id": "inventory_timeout-0",
      "path": "/cart",
      "status": 200,
      "log_path": "cart/events.jsonl",
      "log_line": 9,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
      "kind": "server_begin",
      "service": "cart",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
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      "monotonic_ns": 97917422150,
      "source_file": "test/shop/service.py",
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      "rpc_id": 1000000011,
      "trace_id": 1000000010,
      "parent_rpc_id": 1000000009,
      "request_id": "inventory_timeout-2",
      "path": "/cart",
      "log_path": "cart/events.jsonl",
      "log_line": 10,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
      "kind": "client_begin",
      "service": "cart",
      "process_id": "fdshop-b7b99f7b08-inventory-timeout-cart",
      "process_generation": 1,
      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
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      "monotonic_ns": 97917516687,
      "source_file": "test/shop/service.py",
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      "request_id": "inventory_timeout-2",
      "peer": "catalog",
      "path": "/products",
      "timeout_ms": 3000,
      "log_path": "cart/events.jsonl",
      "log_line": 11,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
      "kind": "client_end",
      "service": "cart",
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      "session_id": "fdshop-b7b99f7b08-inventory-timeout",
      "pid": 8,
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      "monotonic_ns": 97918701088,
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      "peer": "catalog",
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      "status": 200,
      "log_path": "cart/events.jsonl",
      "log_line": 12,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
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      "log_path": "cart/events.jsonl",
      "log_line": 13,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
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      "request_id": "inventory_timeout-3",
      "path": "/cart",
      "log_path": "cart/events.jsonl",
      "log_line": 14,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
      "kind": "client_begin",
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      "request_id": "inventory_timeout-3",
      "peer": "catalog",
      "path": "/products",
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      "log_path": "cart/events.jsonl",
      "log_line": 15,
      "native_rpc_matched": true
    },
    {
      "schema": 1,
      "kind": "client_end",
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      "log_path": "cart/events.jsonl",
      "log_line": 16,
      "native_rpc_matched": true
    },
    {
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      "log_path": "cart/events.jsonl",
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      "native_rpc_matched": true
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    {
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      "code": "expired_before_reservation",
      "reason": "Caller deadline expired before stock mutation; no reservation was created.",
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      "log_path": "inventory/events.jsonl",
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    {
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  ],
  "unresolved": [
    {
      "reason": "semantic_rpc_events_empty",
      "evidence": "rpc"
    },
    {
      "reason": "semantic_rpc_events_empty",
      "evidence": "rpc"
    },
    {
      "reason": "semantic_rpc_events_empty",
      "evidence": "rpc"
    },
    {
      "reason": "rpc_endpoint_pair_not_unique",
      "rpc_id": 1000000001,
      "events": 2,
      "processes": [
        [
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          "fdshop-b7b99f7b08-inventory-timeout-gateway",
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        ]
      ]
    },
    {
      "reason": "rpc_endpoint_pair_not_unique",
      "rpc_id": 1000000003,
      "events": 2,
      "processes": [
        [
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      ]
    },
    {
      "reason": "rpc_endpoint_pair_not_unique",
      "rpc_id": 1000000009,
      "events": 2,
      "processes": [
        [
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          "fdshop-b7b99f7b08-inventory-timeout-gateway",
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    },
    {
      "reason": "rpc_endpoint_pair_not_unique",
      "rpc_id": 1000000013,
      "events": 2,
      "processes": [
        [
          "identity",
          "fdshop-b7b99f7b08-inventory-timeout-gateway",
          1
        ]
      ]
    },
    {
      "status": "evidence_missing",
      "reason": "no_explicit_ipc_pair"
    }
  ],
  "limitations": [
    "Application reasons are self-reported; hashes identify frozen evidence, not authenticity.",
    "Native function traces cover the C++ boundary module, not Python call stacks.",
    "Parent RPC IDs come from application propagation; shared trace IDs alone do not establish causality.",
    "A receiver may finish after the caller times out; caller and receiver statuses are distinct."
  ]
}
