Fix: Add NotStartsWith to negative condition checks

The NotStartsWith filter was being treated as a positive condition, causing
incorrect filter logic. Stack filters with negative conditions need ALL
functions to not match (AND logic), while positive conditions need ANY
function to match (OR logic).

Fixed in 4 functions:
- handleUnsymbolizedFunctionCondition
- matchesFunctionNameInRange
- matchesSystemNameInRange
- matchesFilenameInRange

This fixes the failing TestStackFilterFunctionNameNotStartsWith test.

Author: claude

pkg/query/columnquery.go

@@ -715,22 +715,22 @@ func stackMatchesFilter(
 
 func handleUnsymbolizedFunctionCondition(fnCond *pb.StringCondition) bool {
 	switch fnCond.GetCondition().(type) {
-	case *pb.StringCondition_Contains, *pb.StringCondition_Equal:
-		// For Contains/Equal: no function names means no matches
+	case *pb.StringCondition_Contains, *pb.StringCondition_Equal, *pb.StringCondition_StartsWith:
+		// For Contains/Equal/StartsWith: no function names means no matches
 		return false
-	case *pb.StringCondition_NotContains, *pb.StringCondition_NotEqual:
-		// For NotContains/NotEqual: no function names means condition is satisfied
+	case *pb.StringCondition_NotContains, *pb.StringCondition_NotEqual, *pb.StringCondition_NotStartsWith:
+		// For NotContains/NotEqual/NotStartsWith: no function names means condition is satisfied
 		return true
 	}
 	return false
 }
 
 func matchesFunctionNameInRange(r *profile.RecordReader, firstStart, lastEnd int, fnCond *pb.StringCondition) bool {
-	// For NotContains/NotEqual, we need ALL functions to not contain/equal the target (AND logic)
-	// For Contains/Equal, we need ANY function to contain/equal the target (OR logic)
+	// For NotContains/NotEqual/NotStartsWith, we need ALL functions to not contain/equal/start-with the target (AND logic)
+	// For Contains/Equal/StartsWith, we need ANY function to contain/equal/start-with the target (OR logic)
 	isNegativeCondition := false
 	switch fnCond.GetCondition().(type) {
-	case *pb.StringCondition_NotContains, *pb.StringCondition_NotEqual:
+	case *pb.StringCondition_NotContains, *pb.StringCondition_NotEqual, *pb.StringCondition_NotStartsWith:
 		isNegativeCondition = true
 	}
 
@@ -771,7 +771,7 @@ func matchesFunctionNameInRange(r *profile.RecordReader, firstStart, lastEnd int
 func matchesSystemNameInRange(r *profile.RecordReader, firstStart, lastEnd int, sysCond *pb.StringCondition) bool {
 	isNegativeCondition := false
 	switch sysCond.GetCondition().(type) {
-	case *pb.StringCondition_NotContains, *pb.StringCondition_NotEqual:
+	case *pb.StringCondition_NotContains, *pb.StringCondition_NotEqual, *pb.StringCondition_NotStartsWith:
 		isNegativeCondition = true
 	}
 
@@ -802,7 +802,7 @@ func matchesSystemNameInRange(r *profile.RecordReader, firstStart, lastEnd int,
 func matchesFilenameInRange(r *profile.RecordReader, firstStart, lastEnd int, fileCond *pb.StringCondition) bool {
 	isNegativeCondition := false
 	switch fileCond.GetCondition().(type) {
-	case *pb.StringCondition_NotContains, *pb.StringCondition_NotEqual:
+	case *pb.StringCondition_NotContains, *pb.StringCondition_NotEqual, *pb.StringCondition_NotStartsWith:
 		isNegativeCondition = true
 	}