style: reformat three files the current ruff would rewrite

Not related to the schema work. These three fail ruff format --check on
main as well -- the pinned ruff is newer than whatever last formatted
them -- and a red make check makes the per-task quality gate useless for
everything that follows.

src/polygateway/backends/redis/breaker.py

@@ -367,7 +367,9 @@ class RedisGate:
                 keys=[self._key(source_name)], args=[owner, self._probe_ttl_ms]
             )
         except RedisError as exc:
-            raise GovernanceBackendError(f"熔断后端 try_enter 失败: {exc}", scope=self._scope) from exc
+            raise GovernanceBackendError(
+                f"熔断后端 try_enter 失败: {exc}", scope=self._scope
+            ) from exc
         return self._decision(source_name, result)
 
     async def record_success(
@@ -385,7 +387,9 @@ class RedisGate:
         try:
             result = await self._success_lua(keys=[self._key(entry.source_name)], args=args)
         except RedisError as exc:
-            raise GovernanceBackendError(f"熔断后端 record_success 失败: {exc}", scope=self._scope) from exc
+            raise GovernanceBackendError(
+                f"熔断后端 record_success 失败: {exc}", scope=self._scope
+            ) from exc
         return self._update(result)
 
     async def record_failure(
@@ -407,7 +411,9 @@ class RedisGate:
         try:
             result = await self._failure_lua(keys=[self._key(entry.source_name)], args=args)
         except RedisError as exc:
-            raise GovernanceBackendError(f"熔断后端 record_failure 失败: {exc}", scope=self._scope) from exc
+            raise GovernanceBackendError(
+                f"熔断后端 record_failure 失败: {exc}", scope=self._scope
+            ) from exc
         return self._update(result)
 
     async def release_probe(self, entry: GateDecision) -> GateUpdate:
@@ -419,7 +425,9 @@ class RedisGate:
                 keys=[self._key(entry.source_name)], args=[entry.epoch, entry.probe_owner]
             )
         except RedisError as exc:
-            raise GovernanceBackendError(f"熔断后端 release_probe 失败: {exc}", scope=self._scope) from exc
+            raise GovernanceBackendError(
+                f"熔断后端 release_probe 失败: {exc}", scope=self._scope
+            ) from exc
         return self._update(result)
 
     async def retry_after_s(self, sources: tuple[str, ...]) -> float:
@@ -429,7 +437,9 @@ class RedisGate:
         try:
             result = await self._retry_after_lua(keys=[self._key(s) for s in sources])
         except RedisError as exc:
-            raise GovernanceBackendError(f"熔断后端 retry_after_s 失败: {exc}", scope=self._scope) from exc
+            raise GovernanceBackendError(
+                f"熔断后端 retry_after_s 失败: {exc}", scope=self._scope
+            ) from exc
         return int(result) / 1000.0
 
     async def aclose(self) -> None: