fix(broker): restore main wiring and add production retry cadence + status surface

Co-authored-by: genichin <4282227+genichin@users.noreply.github.com>

.proofline/criteria/ac-0031.md

@@ -0,0 +1,27 @@
+---
+id: "ac-0031"
+status: active
+---
+
+# Broker balance failure lifecycle observability and worker-isolated retry
+
+## Criterion
+
+`trex-core`는 broker balance snapshot을 사용하는 worker(`execution`, `position_reconciliation`, `core_holding_reconciliation`)별로 독립 상태를 유지해야 한다. 상태는 최소 `state(ok|unavailable|stale)`, `last_success_at`, `consecutive_failures`, sanitized `failure_code`, `next_retry_at`를 포함해야 하며, 한 worker의 성공/실패가 다른 worker의 상태를 덮어쓰면 안 된다.
+
+balance read failure는 `timeout`, `http_5xx`, `transport_failed`, `authentication_failed`, `authorization_failed`, `malformed_response`, `broker_rejected`, `ownership_mismatch`를 구분해야 하며, validated empty success(`[]`)는 failure로 취급하면 안 된다. live read transient failure 뒤 snapshot fallback이 stale/expired여도 downstream 상태에는 transient failure 분류가 보존되어야 한다.
+
+daily snapshot cadence와 balance-worker retry cadence는 분리되어야 한다. daily refresh가 이미 수행된 날짜에도 failure worker는 `next_retry_at` 이후에만 재시도되어야 하며(backoff 중 broker read 금지), 성공 시 lifecycle recovery와 정상 cadence로 자동 복귀해야 한다. fail-closed 경계는 유지되어 unavailable/stale snapshot에서 신규 주문/경고 해제 경로가 정상 snapshot으로 해석되어서는 안 된다.
+
+health tracker의 상태는 process-local로 유지되며 daemon restart 시 초기화된다. restart 이후 첫 failure는 새 lifecycle `detected`로 다시 기록되어야 한다.
+
+operator-visible status surface는 instance+worker별 상태를 노출해야 하며 account/token/credential/raw broker payload/예외 원문을 포함해서는 안 된다.
+
+## Verification
+
+- worker isolation: execution/position/core-holding 중 하나만 실패시켜도 다른 worker의 상태가 변경되지 않음을 검증한다.
+- retry cadence: production scheduler path(`run_forever`/`_maybe_tick`)에서 daily refresh 여부와 무관하게 due worker만 backoff deadline 이후 재시도되는지 검증한다.
+- backoff/lifecycle: 장기 outage에서 backoff가 cap에 고정되고, detected/ongoing/recovered lifecycle이 중복 경고 없이 전이되는지 검증한다.
+- classification/fail-closed: empty success, timeout, HTTP 5xx, auth/credential, malformed, pagination-middle failure를 구분하고 각 worker의 fail-closed 결과와 health state를 검증한다.
+- restart semantics: daemon restart(새 tracker 인스턴스) 후 이전 health/backoff가 초기화되고 첫 failure가 detected로 재발행되는지 검증한다.
+- sanitization/visibility: operator status 응답에 instance+worker 상태 필드는 노출되지만 민감정보/원시 payload/예외 문자열은 노출되지 않음을 검증한다.

.proofline/identities.json

@@ -1,5 +1,5 @@
 {
   "schema_version": 1,
   "next_line_number": 10,
-  "next_ac_number": 31
+  "next_ac_number": 32
 }

tests/application/test_balance_health.py

@@ -0,0 +1,38 @@
+from __future__ import annotations
+
+from datetime import UTC, datetime, timedelta
+
+from trex_core.application.balance_health import BalanceHealthTracker
+
+
+def test_long_outage_backoff_is_capped_and_status_stays_valid():
+    now = {"t": datetime(2026, 9, 12, tzinfo=UTC)}
+    tracker = BalanceHealthTracker(clock=lambda: now["t"], base_backoff_sec=15, max_backoff_sec=300)
+
+    backoffs: list[float] = []
+    for _ in range(20):
+        lifecycle, backoff = tracker.record_failure("execution", code="http_5xx")
+        backoffs.append(backoff)
+        assert lifecycle in {None, "detected", "ongoing"}
+        now["t"] += timedelta(seconds=301)
+
+    assert max(backoffs) == 300.0
+    state = tracker.status("execution", stale_after_sec=600)
+    assert state["state"] == "unavailable"
+    assert state["consecutive_failures"] == 20
+    assert state["failure_code"] == "http_5xx"
+
+
+def test_restart_resets_process_local_health_and_re_emits_detected():
+    now = {"t": datetime(2026, 9, 12, tzinfo=UTC)}
+    before_restart = BalanceHealthTracker(clock=lambda: now["t"])
+    before_restart.record_success("execution")
+    lifecycle, _ = before_restart.record_failure("execution", code="timeout")
+    assert lifecycle == "detected"
+
+    after_restart = BalanceHealthTracker(clock=lambda: now["t"])
+    lifecycle, _ = after_restart.record_failure("execution", code="timeout")
+    assert lifecycle == "detected"
+    state = after_restart.status("execution", stale_after_sec=600)
+    assert state["last_success_at"] is None
+    assert state["consecutive_failures"] == 1

tests/application/test_execution.py

@@ -272,6 +272,37 @@ def test_pending_sell_balance_failure_is_fail_closed_with_backoff_and_recovery()
     assert health["consecutive_failures"] == 0
 
 
+def test_pending_sell_health_preserves_non_transient_snapshot_failure_code():
+    broker = PaperBroker(fill_after_polls=0)
+    repo, svc, intents, _ = _wire(broker)
+    sid = _buy(intents, qty=3).slot_id
+    ExecutionService(
+        svc,
+        repo,
+        broker,
+        instance_key=INST,
+    ).run_once()
+    svc.sell(sid, actor="t", reason="full")
+
+    execution = ExecutionService(
+        svc,
+        repo,
+        broker,
+        instance_key=INST,
+        balance_reader=lambda: (_ for _ in ()).throw(
+            AccountSnapshotUnavailable(
+                "live_read_failed",
+                detail_code="authentication_failed",
+            )
+        ),
+    )
+    result = execution.run_once()
+    assert result.sell_skipped_no_balance == 1
+    health = execution.balance_worker_health(stale_after_sec=600)
+    assert health["state"] == "unavailable"
+    assert health["failure_code"] == "authentication_failed"
+
+
 def test_partial_sell_qty_is_min_intent_broker():
     """dcy-021/REQ-062 (D4): partial sell dispatches min(intent qty, broker);
     remainder stays holding (broker-authoritative qty), cost basis preserved."""

tests/application/test_slots_handler_broker_quantity.py

@@ -38,6 +38,14 @@ class _Reader:
         return list(self._holdings), self._captured_at
 
 
+class _HealthReader:
+    def __init__(self, payload: dict[str, dict[str, object]]) -> None:
+        self.payload = payload
+
+    def balance_health_for_slots_rpc(self) -> dict[str, dict[str, object]]:
+        return self.payload
+
+
 class _SlotsReader(Protocol):
     def holdings_for_slots_rpc(self) -> tuple[list[BalanceItem], datetime]: ...
 
@@ -61,6 +69,7 @@ class _Broker:
 def _holding_handler(
     *,
     broker_reader: _SlotsReader,
+    health_reader: _HealthReader | None = None,
     instance_key: str = "default",
     portfolio_id: str = "pf-A",
     symbol: str = "104620",
@@ -96,6 +105,7 @@ def _holding_handler(
         instance_key=instance_key,
         snapshot_store=store,
         broker_quantity_reader=broker_reader,
+        broker_balance_health_reader=health_reader,
     )
     return repo, handler
 
@@ -229,3 +239,77 @@ def test_broker_quantity_reader_is_instance_bound_per_handler():
     row_b = handler_b(_req_holding()).payload["slots"][0]
     assert row_a["qty"] == 440.0
     assert row_b["qty"] == 111.0
+
+
+def test_slots_response_includes_instance_worker_balance_health():
+    _, handler = _holding_handler(
+        broker_reader=_Reader(
+            holdings=[BalanceItem(symbol="104620", hldg_qty=440)],
+            captured_at=datetime(2026, 8, 24, 12, 0, tzinfo=UTC),
+        ),
+        health_reader=_HealthReader(
+            {
+                "execution": {
+                    "state": "unavailable",
+                    "last_success_at": "2026-08-24T11:59:00+00:00",
+                    "consecutive_failures": 2,
+                    "failure_code": "http_5xx",
+                    "next_retry_at": "2026-08-24T12:00:15+00:00",
+                },
+                "position_reconciliation": {
+                    "state": "ok",
+                    "last_success_at": "2026-08-24T12:00:00+00:00",
+                    "consecutive_failures": 0,
+                    "failure_code": None,
+                    "next_retry_at": None,
+                },
+                "core_holding_reconciliation": {
+                    "state": "stale",
+                    "last_success_at": "2026-08-24T08:00:00+00:00",
+                    "consecutive_failures": 0,
+                    "failure_code": None,
+                    "next_retry_at": None,
+                },
+            }
+        ),
+    )
+    payload = handler(_req_holding()).payload
+    health = payload["broker_balance_health"]
+    assert health["execution"]["instance_key"] == "default"
+    assert health["execution"]["worker"] == "execution"
+    assert health["execution"]["failure_code"] == "http_5xx"
+    assert health["execution"]["consecutive_failures"] == 2
+    assert health["position_reconciliation"]["state"] == "ok"
+    assert health["core_holding_reconciliation"]["state"] == "stale"
+
+
+def test_slots_balance_health_surface_sanitizes_unexpected_fields_and_codes():
+    _, handler = _holding_handler(
+        broker_reader=_Reader(
+            holdings=[BalanceItem(symbol="104620", hldg_qty=440)],
+            captured_at=datetime(2026, 8, 24, 12, 0, tzinfo=UTC),
+        ),
+        health_reader=_HealthReader(
+            {
+                "execution": {
+                    "state": "unknown-state",
+                    "last_success_at": "2026-08-24T11:59:00+00:00",
+                    "consecutive_failures": "bad",
+                    "failure_code": "account=12345678 token=secret",
+                    "next_retry_at": "2026-08-24T12:00:15+00:00",
+                    "raw_payload": {"secret": "leak"},
+                    "error": "Traceback: token",
+                }
+            }
+        ),
+    )
+    execution = handler(_req_holding()).payload["broker_balance_health"]["execution"]
+    assert execution == {
+        "instance_key": "default",
+        "worker": "execution",
+        "state": "unavailable",
+        "last_success_at": "2026-08-24T11:59:00+00:00",
+        "consecutive_failures": 0,
+        "failure_code": None,
+        "next_retry_at": "2026-08-24T12:00:15+00:00",
+    }

tests/application/test_snapshot_scheduler.py

@@ -57,10 +57,12 @@ def test_run_once_uses_authoritative_core_holdings_broker(monkeypatch):
     store = SnapshotStore()
     projected_broker = object()
     authoritative_broker = object()
+    unmanaged_store = object()
     captured = {}
 
     def _capture(**kwargs):
         captured["broker"] = kwargs["broker"]
+        captured["unmanaged_position_store"] = kwargs.get("unmanaged_position_store")
         return {}
 
     monkeypatch.setattr(
@@ -74,11 +76,13 @@ def test_run_once_uses_authoritative_core_holdings_broker(monkeypatch):
         core_holdings_broker=authoritative_broker,
         slot_repo=object(),
         slot_service=SimpleNamespace(instance_key="inst-1"),
+        unmanaged_position_store=unmanaged_store,
     )
     sched._reconcile_slots = lambda _items: None
 
     assert sched.run_once() is True
     assert captured["broker"] is authoritative_broker
+    assert captured["unmanaged_position_store"] is unmanaged_store
 
 
 def test_swap_preserves_warning_for_carried_over_portfolio():
@@ -755,3 +759,140 @@ def test_balance_worker_health_isolated_backoff_and_recovery():
     state = sched.balance_worker_health(stale_after_sec=86_400)
     assert state["position_reconciliation"]["state"] == "ok"
     assert state["position_reconciliation"]["consecutive_failures"] == 0
+
+
+def test_maybe_tick_retries_due_worker_without_daily_refresh():
+    from trex_core.application.broker_port import BalanceItem, BrokerBalanceError
+    from trex_core.domain.slot import SlotService
+    from trex_core.domain.slot.in_memory_repository import InMemorySlotRepository
+
+    class CountingRead:
+        def __init__(self):
+            self.calls = 0
+
+        def whoami(self):
+            return "d-1"
+
+        def get_portfolios(self, _daemon_id):
+            self.calls += 1
+            return [PortfolioItem(portfolio_id="pf-X", symbol="X", cash_balance=100, asset_quantity=0)]
+
+    class SequenceBroker:
+        def __init__(self, steps):
+            self.steps = list(steps)
+            self.calls = 0
+
+        def get_balance(self):
+            self.calls += 1
+            step = self.steps.pop(0)
+            if isinstance(step, Exception):
+                raise step
+            return step
+
+    now = {"t": datetime(2026, 9, 12, 0, 0, tzinfo=UTC)}
+    read = CountingRead()
+    position_broker = SequenceBroker(
+        [BrokerBalanceError("http_5xx"), [BalanceItem("X", 0)]]
+    )
+    core_broker = SequenceBroker([[BalanceItem("X", 0)]])
+    store = SnapshotStore()
+    slot_repo = InMemorySlotRepository()
+    slot_service = SlotService(slot_repo, instance_key="default")
+    slot_repo.reconcile_universe("default", {"pf-X": "X"})
+
+    sched = SnapshotScheduler(
+        read_port=read,
+        store=store,
+        broker=position_broker,
+        core_holdings_broker=core_broker,
+        slot_repo=slot_repo,
+        slot_service=slot_service,
+        schedule_kst=datetime(2026, 9, 12, 23, 59).time(),
+        clock=lambda: now["t"],
+    )
+
+    assert sched.run_once() is True
+    assert read.calls == 1
+    assert position_broker.calls == 1
+    assert core_broker.calls == 1
+
+    now["t"] += timedelta(seconds=10)
+    sched._maybe_tick()
+    assert read.calls == 1
+    assert position_broker.calls == 1  # backoff window still active
+    assert core_broker.calls == 1      # no pending core failure, so no retry call
+
+    now["t"] += timedelta(seconds=6)
+    sched._maybe_tick()
+    assert read.calls == 1
+    assert position_broker.calls == 2  # due retry fired without daily snapshot refresh
+    health = sched.balance_worker_health(stale_after_sec=86_400)
+    assert health["position_reconciliation"]["state"] == "ok"
+    assert health["position_reconciliation"]["consecutive_failures"] == 0
+    assert health["core_holding_reconciliation"]["state"] == "ok"
+
+
+def test_run_forever_retries_due_worker_on_production_loop_path():
+    from trex_core.application.broker_port import BalanceItem, BrokerBalanceError
+
+    class LoopRead:
+        def __init__(self):
+            self.calls = 0
+
+        def whoami(self):
+            return "d-1"
+
+        def get_portfolios(self, _daemon_id):
+            self.calls += 1
+            return [PortfolioItem(portfolio_id="pf-X", symbol="X", cash_balance=100, asset_quantity=0)]
+
+    class SequenceBroker:
+        def __init__(self, steps):
+            self.steps = list(steps)
+            self.calls = 0
+
+        def get_balance(self):
+            self.calls += 1
+            step = self.steps.pop(0)
+            if isinstance(step, Exception):
+                raise step
+            return step
+
+    class StopAfter:
+        def __init__(self, waits: int, tick):
+            self._waits = waits
+            self._tick = tick
+            self._count = 0
+
+        def wait(self, _sec: float):
+            if self._count >= self._waits:
+                return True
+            self._tick(self._count)
+            self._count += 1
+            return False
+
+    now = {"t": datetime(2026, 9, 12, 0, 0, tzinfo=UTC)}
+    read = LoopRead()
+    position_broker = SequenceBroker(
+        [BrokerBalanceError("http_5xx"), [BalanceItem("X", 0)]]
+    )
+    sched = SnapshotScheduler(
+        read_port=read,
+        store=SnapshotStore(),
+        broker=position_broker,
+        schedule_kst=datetime(2026, 9, 12, 23, 59).time(),
+        clock=lambda: now["t"],
+    )
+    stop = StopAfter(
+        waits=3,
+        tick=lambda i: now.__setitem__("t", now["t"] + timedelta(seconds=(10 if i == 0 else 6))),
+    )
+
+    sched.run_forever(stop, tick_sec=1.0)
+
+    # Boot refresh once + no extra daily refresh, but one due retry after backoff deadline.
+    assert read.calls == 1
+    assert position_broker.calls == 2
+    state = sched.balance_worker_health(stale_after_sec=86_400)
+    assert state["position_reconciliation"]["state"] == "ok"
+    assert state["position_reconciliation"]["consecutive_failures"] == 0

trex_core/application/messaging_handlers.py

@@ -192,6 +192,63 @@ class SlotsBrokerQuantityReader(Protocol):
     def holdings_for_slots_rpc(self) -> tuple[list[BalanceItem], datetime]: ...
 
 
+class SlotsBrokerBalanceHealthReader(Protocol):
+    def balance_health_for_slots_rpc(self) -> dict[str, dict[str, object]]: ...
+
+
+_BALANCE_HEALTH_STATES = frozenset({"ok", "unavailable", "stale"})
+_BALANCE_HEALTH_FAILURE_CODES = frozenset({
+    "token_issuance_failed",
+    "authentication_failed",
+    "authorization_failed",
+    "transport_failed",
+    "timeout",
+    "http_5xx",
+    "malformed_response",
+    "broker_rejected",
+    "ownership_mismatch",
+    "stale_snapshot",
+    "account_mismatch",
+    "not_ready",
+    "expired",
+    "live_read_failed",
+    "read_failed",
+})
+
+
+def _sanitize_balance_worker_status(
+    *,
+    instance_key: str,
+    worker: str,
+    raw: dict[str, object],
+) -> dict[str, object]:
+    state = str(raw.get("state") or "unavailable")
+    if state not in _BALANCE_HEALTH_STATES:
+        state = "unavailable"
+    try:
+        consecutive_failures = max(0, int(raw.get("consecutive_failures", 0)))
+    except (TypeError, ValueError):
+        consecutive_failures = 0
+    failure_code_raw = raw.get("failure_code")
+    failure_code = (
+        str(failure_code_raw)
+        if isinstance(failure_code_raw, str)
+        and failure_code_raw in _BALANCE_HEALTH_FAILURE_CODES
+        else None
+    )
+    last_success_at = raw.get("last_success_at")
+    next_retry_at = raw.get("next_retry_at")
+    return {
+        "instance_key": instance_key,
+        "worker": worker,
+        "state": state,
+        "last_success_at": last_success_at if isinstance(last_success_at, str) else None,
+        "consecutive_failures": consecutive_failures,
+        "failure_code": failure_code,
+        "next_retry_at": next_retry_at if isinstance(next_retry_at, str) else None,
+    }
+
+
 def make_slots_rpc_handler(
     slot_repo: SlotRepository,
     *,
@@ -205,6 +262,7 @@ def make_slots_rpc_handler(
     max_active_slots: Optional[int] = None,
     strategy_state_store=None,
     broker_quantity_reader: Optional[SlotsBrokerQuantityReader] = None,
+    broker_balance_health_reader: Optional[SlotsBrokerBalanceHealthReader] = None,
 ):
     """Build the RPC handler for `trex.slots.req` (REQ-073/074/116).
 
@@ -437,6 +495,23 @@ def make_slots_rpc_handler(
             "reason": reason,
             "message": message,
         }
+        if broker_balance_health_reader is not None:
+            try:
+                raw_health = broker_balance_health_reader.balance_health_for_slots_rpc()
+            except Exception:  # noqa: BLE001 - status surface must stay available
+                raw_health = {}
+            health_payload: dict[str, dict[str, object]] = {}
+            if isinstance(raw_health, dict):
+                for worker, raw in raw_health.items():
+                    if not isinstance(worker, str) or not worker or not isinstance(raw, dict):
+                        continue
+                    health_payload[worker] = _sanitize_balance_worker_status(
+                        instance_key=instance_key,
+                        worker=worker,
+                        raw=raw,
+                    )
+            if health_payload:
+                base_payload["broker_balance_health"] = health_payload
         if warn_store is not None:
             base_payload["excluded_slots"] = {
                 "reconcile_quantity_mismatch": excluded_count,

trex_core/application/snapshot_scheduler.py

@@ -117,6 +117,7 @@ class SnapshotScheduler:
                 _log.exception("snapshot scheduler tick failed")
 
     def _maybe_tick(self) -> None:
+        self._maybe_retry_balance_workers()
         now_kst = self._clock().astimezone(_KST)
         target = datetime.combine(now_kst.date(), self._schedule_kst, tzinfo=_KST)
         if now_kst < target:
@@ -319,6 +320,24 @@ class SnapshotScheduler:
         self._store.swap(items)
         try:
             # BAT-050 / REQ-103: pass warn_store + slot_repo for C-case durable warning.
+            self._run_position_reconciliation_worker()
+        except Exception:  # noqa: BLE001
+            _log.exception("reconciliation pass failed")
+        if self._slot_repo is not None:
+            try:
+                self._reconcile_slots(items)
+            except Exception:  # noqa: BLE001
+                _log.exception("slot reconcile pass failed")
+            if self._slot_service is not None:
+                try:
+                    # BAT-050 / REQ-103: pass warn_store for B-case durable warning.
+                    self._run_core_holding_reconciliation_worker()
+                except Exception:  # noqa: BLE001
+                    _log.exception("core-holding divergence reconcile failed")
+        self._last_fired_date = self._clock()
+        return True
+
+    def _run_position_reconciliation_worker(self) -> None:
         self._run_balance_worker(
             worker="position_reconciliation",
             stale_after_sec=24 * 60 * 60,
@@ -332,42 +351,44 @@ class SnapshotScheduler:
                 notification_store=self._notification_store,
             ),
         )
-        except Exception:  # noqa: BLE001
-            _log.exception("reconciliation pass failed")
-        if self._slot_repo is not None:
-            try:
-                self._reconcile_slots(items)
-            except Exception:  # noqa: BLE001
-                _log.exception("slot reconcile pass failed")
-            if self._slot_service is not None:
-                try:
+
+    def _run_core_holding_reconciliation_worker(self) -> None:
         from trex_core.application.reconciliation import reconcile_core_holdings
-                    # BAT-050 / REQ-103: pass warn_store for B-case durable warning.
-<<<<<<< HEAD
+
         self._run_balance_worker(
             worker="core_holding_reconciliation",
             stale_after_sec=24 * 60 * 60,
             run=lambda: reconcile_core_holdings(
-                            slot_repo=self._slot_repo, slot_service=self._slot_service,
-                            broker=self._broker, instance_key=self._instance_key,
-                            alarm_emitter=self._alarm_emitter,  # dcy-033 / REQ-100
-                            warn_store=self._warn_store,  # BAT-050 / REQ-103
-                            notification_store=self._notification_store,  # req-0007 / ac-0024
-                        ),
-=======
-                    reconcile_core_holdings(
-                        slot_repo=self._slot_repo, slot_service=self._slot_service,
-                        broker=self._core_holdings_broker, instance_key=self._instance_key,
+                slot_repo=self._slot_repo,
+                slot_service=self._slot_service,
+                broker=self._core_holdings_broker,
+                instance_key=self._instance_key,
                 alarm_emitter=self._alarm_emitter,  # dcy-033 / REQ-100
                 warn_store=self._warn_store,  # BAT-050 / REQ-103
                 notification_store=self._notification_store,  # req-0007 / ac-0024
                 unmanaged_position_store=self._unmanaged_position_store,
->>>>>>> origin/main
+            ),
         )
+
+    def _has_pending_balance_failure(self, worker: str) -> bool:
+        status = self._balance_health.status(worker, stale_after_sec=24 * 60 * 60)
+        return int(status.get("consecutive_failures", 0)) > 0
+
+    def _maybe_retry_balance_workers(self) -> None:
+        if self._has_pending_balance_failure("position_reconciliation"):
+            try:
+                self._run_position_reconciliation_worker()
             except Exception:  # noqa: BLE001
-                    _log.exception("core-holding divergence reconcile failed")
-        self._last_fired_date = self._clock()
-        return True
+                _log.exception("reconciliation retry pass failed")
+        if (
+            self._slot_repo is not None
+            and self._slot_service is not None
+            and self._has_pending_balance_failure("core_holding_reconciliation")
+        ):
+            try:
+                self._run_core_holding_reconciliation_worker()
+            except Exception:  # noqa: BLE001
+                _log.exception("core-holding divergence retry failed")
 
     def _run_balance_worker(
         self,

trex_core/runtime/daemon.py

@@ -466,10 +466,21 @@ class Daemon:
             max_active_slots=self.config.max_active_slots,
             strategy_state_store=self.strategy_state_store,  # dcy-028 C-1
             broker_quantity_reader=self.account_snapshot_service,
+            broker_balance_health_reader=self,
         )
         transport.consume_rpc_forever(
             topology.slots_queue(self.config.instance_key), handler, self.stop)
 
+    def balance_health_for_slots_rpc(self) -> dict[str, dict[str, object]]:
+        reconcile = self.snapshot_scheduler.balance_worker_health(
+            stale_after_sec=24 * 60 * 60,
+        )
+        return {
+            "execution": self.execution.balance_worker_health(stale_after_sec=600),
+            "position_reconciliation": reconcile["position_reconciliation"],
+            "core_holding_reconciliation": reconcile["core_holding_reconciliation"],
+        }
+
     def _strategy_state_set_loop(self) -> None:
         # dcy-028 / REQ-080: opaque strategy-state write RPC (entry-version CAS).
         transport = _build_transport(self.config)