fix: warn on ambiguous contains match, use sort.Slice in sortedCalls

internal/tools/callees.go

@@ -61,6 +61,9 @@ func Callees(p *cachegrind.Profile, name string, topN int) string {
 	}
 
 	var sb strings.Builder
+	if len(fns) > 1 {
+		fmt.Fprintf(&sb, "Warning: %d functions match %q — showing all\n\n", len(fns), name)
+	}
 	for _, fn := range fns {
 		fmt.Fprintf(&sb, "Callees of %q [%s]\n", fn.Name, fn.File)
 		if len(fn.Calls) == 0 {

internal/tools/callers.go

@@ -3,6 +3,7 @@ package tools
 import (
 	"context"
 	"fmt"
+	"sort"
 	"strings"
 
 	"github.com/mark3labs/mcp-go/mcp"
@@ -61,6 +62,9 @@ func Callers(p *cachegrind.Profile, name string, topN int) string {
 	}
 
 	var sb strings.Builder
+	if len(fns) > 1 {
+		fmt.Fprintf(&sb, "Warning: %d functions match %q — showing all\n\n", len(fns), name)
+	}
 	for _, fn := range fns {
 		fmt.Fprintf(&sb, "Callers of %q [%s]\n", fn.Name, fn.File)
 		if len(fn.CalledBy) == 0 {
@@ -87,25 +91,15 @@ func Callers(p *cachegrind.Profile, name string, topN int) string {
 func sortedCalls(calls []*cachegrind.Call) []*cachegrind.Call {
 	out := make([]*cachegrind.Call, len(calls))
 	copy(out, calls)
-	sortCallSlice(out)
+	sort.Slice(out, func(i, j int) bool {
+		ci, cj := int64(0), int64(0)
+		if len(out[i].Costs) > 0 {
+			ci = out[i].Costs[0]
+		}
+		if len(out[j].Costs) > 0 {
+			cj = out[j].Costs[0]
+		}
+		return ci > cj
+	})
 	return out
 }
-
-func sortCallSlice(calls []*cachegrind.Call) {
-	for i := 1; i < len(calls); i++ {
-		for j := i; j > 0; j-- {
-			ci, cj := int64(0), int64(0)
-			if len(calls[j].Costs) > 0 {
-				ci = calls[j].Costs[0]
-			}
-			if len(calls[j-1].Costs) > 0 {
-				cj = calls[j-1].Costs[0]
-			}
-			if ci > cj {
-				calls[j], calls[j-1] = calls[j-1], calls[j]
-			} else {
-				break
-			}
-		}
-	}
-}