feat(multi-instance): dcy-009 BAT-013 — RabbitMQ 다중 인스턴스 토폴로지 (REQ-048~051)

dcy-009(다중 인스턴스 RabbitMQ 토폴로지) 전체 SDLC: draft-req → confirm-req →
draft-batch(BAT-013) → run-batch-delivery → confirm-req-implemented.

- REQ-048 (Configuration): DaemonInstanceConfig.from_toml + DaemonConfig.from_config
  (env 병합, portfolio_hub_token 주입) + 데몬 --config 필수 argparse + .gitignore 인스턴스
  TOML + config/instance.example.toml
- REQ-049 (Interface): topology 동적 큐명 빌더 intent/snapshot/control_queue(instance_key)
  — default=리터럴 큐명(하위호환), named=`{base}.{instance_key}` + daemon per-instance 구독
- REQ-050 (Integration): trex.direct(topic)/trex.broadcast(fanout) exchange +
  declare_topology(instance_key) per-instance binding + control dual binding + direct_routing_key
- REQ-051 (Documentation): interface-contract/runtime-flows/project-structure 정합

하위호환: instance_key="default" → 기존 리터럴 큐명·RPC 경로 무회귀(FR-5).
split-brain 방지(NFR-3): 인스턴스 전용 큐. 민감값(NFR-4): TOML + gitignore.

검증: 신규 9 단위 + RabbitMQ 라우팅 2, 단위 271 passed,
인프라 게이트 301 passed(directed 격리 S-2 + broadcast dual S-3 + default 무회귀 S-4),
ruff clean. REQ-048~051 Implemented, BAT-013 release-candidate.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

trex_core/runtime/config.py

@@ -2,7 +2,7 @@
 from __future__ import annotations
 
 import os
-from dataclasses import dataclass
+from dataclasses import dataclass, replace
 from typing import Optional
 
 
@@ -85,12 +85,44 @@ class SafetySellConfig:
     market_close_liquidation_time: Optional[str] = None  # "HH:MM" KST, optional
 
 
+@dataclass(frozen=True)
+class DaemonInstanceConfig:
+    """Per-instance TOML settings (REQ-048 / BAT-013).
+
+    `instance_key` and `portfolio_hub_token` live in a TOML file (not .env)
+    so they are not committed and so multiple instances can run distinct
+    queues. Loaded via `--config <path>.toml`.
+    """
+
+    instance_key: str
+    portfolio_hub_token: str = ""
+
+    @staticmethod
+    def from_toml(path: str) -> "DaemonInstanceConfig":
+        import tomllib
+
+        with open(path, "rb") as fh:
+            data = tomllib.load(fh)
+        instance_key = data.get("instance_key")
+        if not instance_key:
+            raise RuntimeError(
+                f"instance TOML missing required 'instance_key': {path}"
+            )
+        return DaemonInstanceConfig(
+            instance_key=str(instance_key),
+            portfolio_hub_token=str(data.get("portfolio_hub_token") or ""),
+        )
+
+
 @dataclass(frozen=True)
 class DaemonConfig:
     dsn: str
     total_slots: int
     broker: str                      # 'paper' | 'kis'
     execution_interval_sec: float
+    # BAT-013 / REQ-049: instance identity for multi-instance queue naming.
+    # "default" keeps legacy literal queue names (backward-compat).
+    instance_key: str = "default"
     kis: Optional[KISConfig] = None
     # REQ-011: paper broker tuning (only consulted when broker == 'paper').
     paper: PaperBrokerConfig = PaperBrokerConfig()
@@ -179,3 +211,18 @@ class DaemonConfig:
             snapshot_schedule=snapshot_schedule,
             safety_sell=safety_sell,
         )
+
+    @staticmethod
+    def from_config(toml_path: str) -> "DaemonConfig":
+        """Build config from env + a per-instance TOML file (REQ-048 / BAT-013).
+
+        `instance_key` and `portfolio_hub_token` come from TOML (not .env).
+        TOML `portfolio_hub_token` overrides the (env-derived) PortfolioHubConfig
+        token when a portfolio-hub base_url is configured.
+        """
+        base = DaemonConfig.from_env()
+        inst = DaemonInstanceConfig.from_toml(toml_path)
+        pf = base.portfolio_hub
+        if inst.portfolio_hub_token and pf is not None:
+            pf = replace(pf, token=inst.portfolio_hub_token)
+        return replace(base, instance_key=inst.instance_key, portfolio_hub=pf)

trex_core/runtime/daemon.py

@@ -217,7 +217,7 @@ class Daemon:
         transport = _build_transport(self.config)
         self._transports.append(transport)
         try:
-            transport.declare_topology()
+            transport.declare_topology(self.config.instance_key)
         except Exception:  # noqa: BLE001
             pass
         handler = make_intent_rpc_handler(
@@ -225,13 +225,14 @@ class Daemon:
             slot_service=self.slot_service,
             watchdog_store=self.watchdog,
         )
-        transport.consume_rpc_forever(topology.INTENT_REQ_QUEUE, handler, self.stop)
+        transport.consume_rpc_forever(
+            topology.intent_queue(self.config.instance_key), handler, self.stop)
 
     def _snapshot_rpc_loop(self) -> None:
         transport = _build_transport(self.config)
         self._transports.append(transport)
         try:
-            transport.declare_topology()
+            transport.declare_topology(self.config.instance_key)
         except Exception:  # noqa: BLE001
             pass
         handler = make_snapshot_rpc_handler(
@@ -242,20 +243,22 @@ class Daemon:
             watchdog_store=self.watchdog,
             killswitch_store=self.killswitch_store,
         )
-        transport.consume_rpc_forever(topology.SNAPSHOT_REQ_QUEUE, handler, self.stop)
+        transport.consume_rpc_forever(
+            topology.snapshot_queue(self.config.instance_key), handler, self.stop)
 
     def _control_rpc_loop(self) -> None:
         # REQ-043: operator control channel (pause/resume/list + kill_switch/resume_kill_switch).
         transport = _build_transport(self.config)
         self._transports.append(transport)
         try:
-            transport.declare_topology()
+            transport.declare_topology(self.config.instance_key)
         except Exception:  # noqa: BLE001
             pass
         handler = make_control_rpc_handler(
             self.pause_store, kill_switch_service=self.kill_switch,
         )
-        transport.consume_rpc_forever(topology.CONTROL_REQ_QUEUE, handler, self.stop)
+        transport.consume_rpc_forever(
+            topology.control_queue(self.config.instance_key), handler, self.stop)
 
     def _safety_sell_loop(self) -> None:
         # REQ-037/038/039: forced_close / stop-loss·take-profit / market-close.
@@ -281,7 +284,7 @@ class Daemon:
         )
         self.execution.reconcile()  # REQ-014 restart recovery
         try:
-            self.event_publisher.declare_topology()
+            self.event_publisher.declare_topology(self.config.instance_key)
         except Exception:  # noqa: BLE001
             _log.warning("event publisher topology declare failed", exc_info=True)
 
@@ -325,8 +328,17 @@ class Daemon:
 
 
 def main() -> None:  # pragma: no cover - process entrypoint
+    import argparse
+
     logging.basicConfig(level=logging.INFO)
-    config = DaemonConfig.from_env()
+    parser = argparse.ArgumentParser(prog="trex-core-daemon")
+    parser.add_argument(
+        "--config", required=True,
+        help="per-instance TOML config path (instance_key, portfolio_hub_token). "
+             "Required — no default (REQ-048 / dcy-009 OQ-2).",
+    )
+    args = parser.parse_args()
+    config = DaemonConfig.from_config(args.config)
     Daemon(config).run()