refactor(safety): apply consistent formatting across services and tests

Improved code readability and uniformity by standardizing line breaks, indentation, and inline conditions across safety-related services, models, and tests, including content filters, validation rules, and emergency controls.

backend/app/services/safety/costs/controller.py

@@ -69,7 +69,9 @@ class BudgetTracker:
                 else 0
             )
 
-            is_warning = max(token_usage_ratio, cost_usage_ratio) >= self.warning_threshold
+            is_warning = (
+                max(token_usage_ratio, cost_usage_ratio) >= self.warning_threshold
+            )
             is_exceeded = (
                 self._tokens_used >= self.tokens_limit
                 or self._cost_used_usd >= self.cost_limit_usd
@@ -94,12 +96,16 @@ class BudgetTracker:
                 reset_at=reset_at,
             )
 
-    async def check_budget(self, estimated_tokens: int, estimated_cost_usd: float) -> bool:
+    async def check_budget(
+        self, estimated_tokens: int, estimated_cost_usd: float
+    ) -> bool:
         """Check if there's enough budget for an operation."""
         async with self._lock:
             self._check_reset()
 
-            would_exceed_tokens = (self._tokens_used + estimated_tokens) > self.tokens_limit
+            would_exceed_tokens = (
+                self._tokens_used + estimated_tokens
+            ) > self.tokens_limit
             would_exceed_cost = (
                 self._cost_used_usd + estimated_cost_usd
             ) > self.cost_limit_usd
@@ -241,13 +247,13 @@ class CostController:
             session_tracker = await self.get_or_create_tracker(
                 BudgetScope.SESSION, session_id
             )
-            if not await session_tracker.check_budget(estimated_tokens, estimated_cost_usd):
+            if not await session_tracker.check_budget(
+                estimated_tokens, estimated_cost_usd
+            ):
                 return False
 
         # Check agent daily budget
-        agent_tracker = await self.get_or_create_tracker(
-            BudgetScope.DAILY, agent_id
-        )
+        agent_tracker = await self.get_or_create_tracker(BudgetScope.DAILY, agent_id)
         if not await agent_tracker.check_budget(estimated_tokens, estimated_cost_usd):
             return False