P13-02-CODE1: P13-02 背面対象参照・占有・保存の非描写機構（全原成果の一部、加算なし）

docs/plans/original-completion-2026-10-02/execution/completion_marker_contracts.json

@@ -3784,7 +3784,7 @@
       "template": "Peeping room runtime: <checks> checks, <failures> failures",
       "required": true,
       "fixed_check_count_used": false,
-      "source_sha256_at_schema_audit": "30ed2fe11cc6b0353e9a3a6d995cf8690d322858d2c3dbb38ef32fd941072d2d",
+      "source_sha256_at_schema_audit": "924efd34414c12a325a1b700f799aef0396de9f15441fd88a3608292ff221657",
       "authority": {
         "path": "docs/plans/original-completion-2026-10-02/execution/p13-02/CODE1_TASK_SPEC.json",
         "scope": "new backend suite marker; native execution pending"

tests/special/test_peeping_room_runtime.gd

@@ -12,10 +12,43 @@ func _run() -> void:
 	expect(before == var_to_bytes(runtime.create_snapshot()), "validator changes no whole Runtime bytes")
 	var public_validation: CommandResult = runtime.submit_command(&"peeping_room_validate", validation.payload)
 	expect(public_validation.is_success(), "registered validation command runs through real queue")
-	var domain_before := [runtime.world_service.create_snapshot(), runtime.economy_service.create_snapshot(), runtime.id_generator.create_snapshot(), runtime.peeping_room_service.create_snapshot()]
+	var placement := SimulationCommand.new()
+	placement.command_type = &"peeping_room_place"
+	placement.payload = validation.payload.duplicate(true)
+	var placement_before := var_to_bytes(runtime.create_snapshot())
+	var direct_unavailable: CommandResult = runtime._execute_peeping_room(placement)
+	expect(not direct_unavailable.is_success() and direct_unavailable.details[&"reason"] == &"BUILD_DEFINITION_PENDING_D04", "direct production placement unavailable with precise reason")
+	expect(placement_before == var_to_bytes(runtime.create_snapshot()), "direct placement adds no room, occupancy, cost or ID in whole typed Runtime")
+	var domain_before := var_to_bytes([runtime.world_service.create_snapshot(), runtime.economy_service.create_snapshot(), runtime.peeping_room_service.create_snapshot()])
+	var ids_before: Dictionary = runtime.id_generator.create_snapshot()
+	var counters_before: Dictionary = ids_before["counters"]
+	var event_counter_before: int = counters_before.get("domain_event", 0)
+	var event_ids_before := {}
+	for event: SimulationDomainEvent in runtime.domain_events.recent_events():
+		event_ids_before[event.event_id] = true
 	var unavailable: CommandResult = runtime.submit_command(&"peeping_room_place", validation.payload)
 	expect(not unavailable.is_success() and unavailable.details[&"reason"] == &"BUILD_DEFINITION_PENDING_D04", "production placement unavailable with precise reason")
-	expect(var_to_bytes(domain_before) == var_to_bytes([runtime.world_service.create_snapshot(), runtime.economy_service.create_snapshot(), runtime.id_generator.create_snapshot(), runtime.peeping_room_service.create_snapshot()]), "placement adds no room, occupancy, cost or ID (normal queue receipt only)")
+	expect(domain_before == var_to_bytes([runtime.world_service.create_snapshot(), runtime.economy_service.create_snapshot(), runtime.peeping_room_service.create_snapshot()]), "queued placement adds no room, occupancy or cost")
+	var ids_after: Dictionary = runtime.id_generator.create_snapshot()
+	var counters_after: Dictionary = ids_after["counters"]
+	expect(ids_before["version"] == ids_after["version"], "queued placement preserves ID generator version")
+	for prefix: Variant in counters_before:
+		if prefix != "domain_event":
+			expect(counters_after.has(prefix) and counters_after.get(prefix) == counters_before[prefix], "queued placement consumes no non-event ID or removes prefix: %s" % prefix)
+	for prefix: Variant in counters_after:
+		if prefix != "domain_event":
+			expect(counters_before.has(prefix), "queued placement adds no non-event ID prefix: %s" % prefix)
+	expect(counters_after.has("domain_event") and counters_after["domain_event"] == event_counter_before + 1, "queued placement allocates exactly one normal receipt event ID")
+	var new_events: Array[SimulationDomainEvent] = []
+	for event: SimulationDomainEvent in runtime.domain_events.recent_events():
+		if not event_ids_before.has(event.event_id):
+			new_events.append(event)
+	expect(new_events.size() == 1, "queued placement publishes exactly one new receipt event")
+	if new_events.size() == 1:
+		var receipt: SimulationDomainEvent = new_events[0]
+		expect(receipt.event_id == StringName("domain_event.%012d" % (event_counter_before + 1)), "placement receipt uses the next domain event ID")
+		expect(receipt.event_type == &"COMMAND_FAILED", "unavailable placement receipt is COMMAND_FAILED")
+		expect(receipt.causation_command_id == unavailable.command_id, "placement receipt causation matches rejected command")
 	var room := place(f)
 	enable_fixture(f, room)
 	var blocked: CommandResult = runtime.submit_command(&"peeping_room_record_evidence", {&"room_id": room, &"source_event_key": &"fixture.command"})