lint and correct cypher query code

pkg/neo4j/save-event.go

@@ -154,13 +154,22 @@ CREATE (e)-[:AUTHORED_BY]->(a)
 				paramName := fmt.Sprintf("eTag_%d", eTagIndex)
 				params[paramName] = tagValue
 
-				// Add WITH clause before first OPTIONAL MATCH to transition from CREATE to MATCH
+				// Add WITH clause before OPTIONAL MATCH
+				// This is required because:
+				// 1. Cypher doesn't allow MATCH after CREATE without WITH
+				// 2. Cypher doesn't allow MATCH after FOREACH without WITH
+				// So we need WITH before EVERY OPTIONAL MATCH, not just the first
 				if needsWithClause {
 					cypher += `
 // Carry forward event and author nodes for tag processing
 WITH e, a
 `
 					needsWithClause = false
+				} else {
+					// After a FOREACH, we need WITH to transition back to MATCH
+					cypher += `
+WITH e, a
+`
 				}
 
 				cypher += fmt.Sprintf(`