fix: resolve linting and formatting issues for CI

- Use contextlib.suppress instead of try/except/pass (SIM105)
- Prefix unused fixture arguments with underscore (ARG002)
- Replace asyncio.TimeoutError with TimeoutError (UP041)
- Apply ruff formatting to all files

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/polymarket_insider_tracker/profiler/entities.py

@@ -195,19 +195,16 @@ class EntityRegistry:
             True if the address is a known smart contract.
         """
         entity_type = self.classify(address)
-        contract_types = (
-            self.DEX_ENTITY_TYPES
-            | {
-                EntityType.TOKEN_USDC,
-                EntityType.TOKEN_USDT,
-                EntityType.TOKEN_WETH,
-                EntityType.TOKEN_WMATIC,
-                EntityType.DEFI_AAVE,
-                EntityType.DEFI_COMPOUND,
-                EntityType.DEFI_OTHER,
-                EntityType.CONTRACT,
-            }
-        )
+        contract_types = self.DEX_ENTITY_TYPES | {
+            EntityType.TOKEN_USDC,
+            EntityType.TOKEN_USDT,
+            EntityType.TOKEN_WETH,
+            EntityType.TOKEN_WMATIC,
+            EntityType.DEFI_AAVE,
+            EntityType.DEFI_COMPOUND,
+            EntityType.DEFI_OTHER,
+            EntityType.CONTRACT,
+        }
         return entity_type in contract_types
 
     def get_entity_category(self, address: str) -> str: