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:

src/polygateway/backends/redis/limiter.py

@@ -247,7 +247,9 @@ class RedisLimiter:
                 ],
             )
         except RedisError as exc:
-            raise GovernanceBackendError(f"限流后端 try_acquire 失败: {exc}", scope=self._scope) from exc
+            raise GovernanceBackendError(
+                f"限流后端 try_acquire 失败: {exc}", scope=self._scope
+            ) from exc
         if ok != 1:
             return None
         return _RedisPermit(self, source_key, lease_id, est_tokens, window)
@@ -265,7 +267,9 @@ class RedisLimiter:
         try:
             await self._release_lua(keys=[gl, sl], args=[lease_id])
         except RedisError as exc:
-            raise GovernanceBackendError(f"限流后端 release 失败: {exc}", scope=self._scope) from exc
+            raise GovernanceBackendError(
+                f"限流后端 release 失败: {exc}", scope=self._scope
+            ) from exc
 
     async def _settle_tpm(self, source_key: str, delta: int, window: int) -> None:
         wk = self._window_keys(source_key, window)
@@ -283,7 +287,9 @@ class RedisLimiter:
             wk = self._window_keys(source_key, window)
             res = await self._stats_lua(keys=[sl, wk["s_rpm"], wk["s_tpm"]])
         except RedisError as exc:
-            raise GovernanceBackendError(f"限流后端 source_stats 失败: {exc}", scope=self._scope) from exc
+            raise GovernanceBackendError(
+                f"限流后端 source_stats 失败: {exc}", scope=self._scope
+            ) from exc
         return SourceStats(
             inflight=int(res[0]),
             rpm_used=max(0, int(res[1])),
@@ -295,14 +301,18 @@ class RedisLimiter:
         try:
             await self._progress_mark_lua(keys=[self._progress_key()], args=[_PROGRESS_TTL_S])
         except RedisError as exc:
-            raise GovernanceBackendError(f"限流后端 mark_progress 失败: {exc}", scope=self._scope) from exc
+            raise GovernanceBackendError(
+                f"限流后端 mark_progress 失败: {exc}", scope=self._scope
+            ) from exc
 
     async def progress_age_s(self) -> float:
         """距上次全局成功的秒数;仅键缺失(-1)= 从未进展 → inf(CHS limiter.py:208)。"""
         try:
             res = await self._progress_age_lua(keys=[self._progress_key()])
         except RedisError as exc:
-            raise GovernanceBackendError(f"限流后端 progress_age_s 失败: {exc}", scope=self._scope) from exc
+            raise GovernanceBackendError(
+                f"限流后端 progress_age_s 失败: {exc}", scope=self._scope
+            ) from exc
         return float("inf") if int(res) == -1 else int(res) / 1000.0
 
     async def aclose(self) -> None: