tests: Add integration tests for log querying

Adds comprehensive integration test for _logs query:

Test implementation:
- Deploys logs-query subgraph and waits for sync
- Triggers contract events to generate logs
- Queries _logs field with various filters
- Verifies log entries are returned correctly
- Tests filtering by level and text search

Author: fordN

CLAUDE.md

@@ -98,6 +98,9 @@ TEST_CASE=grafted just test-integration
 
 # (Optional) Use graph-cli instead of gnd for compatibility testing
 GRAPH_CLI=node_modules/.bin/graph just test-integration
+
+# Override ports if using different service ports (e.g., for local development)
+POSTGRES_TEST_PORT=5432 ETHEREUM_TEST_PORT=8545 IPFS_TEST_PORT=5001 just test-integration
 ```
 
 **⚠️ Test Verification Requirements:**

pnpm-lock.yaml

@@ -125,6 +125,7 @@ async fn introspection_query(schema: Arc<ApiSchema>, query: &str) -> QueryResult
         max_first: u32::MAX,
         max_skip: u32::MAX,
         trace: false,
+        log_store: Arc::new(graph::components::log_store::NoOpLogStore),
     };
 
     let result =