style: modernize the new tooling code to match the repo conventions

cmd/gasm/audit.go

@@ -10,7 +10,8 @@ import (
 	"path/filepath"
 	"regexp"
 	"runtime"
-	"sort"
+	"slices"
+	"strconv"
 	"strings"
 
 	"sourcedock.dev/petrbalvin/gasm-devkit/arch"
@@ -80,9 +81,9 @@ mnemonic, so the audit tracks whatever toolchain `+"`go env GOROOT`"+` names.
 	// GO-ONLY is not enumerable by probing: Go's table is only visible
 	// through names we already know, so nothing can be reported there.
 
-	sort.Strings(superset)
-	sort.Strings(backlog)
-	sort.Strings(shared)
+	slices.Sort(superset)
+	slices.Sort(backlog)
+	slices.Sort(shared)
 
 	w := os.Stdout
 	fmt.Fprintf(w, "gasm table (amd64, families excluded): %d mnemonics\n", len(names))
@@ -176,8 +177,10 @@ func probeGoAsm(names []string) (map[string]bool, error) {
 		if m == nil {
 			continue
 		}
-		var lineNo int
-		fmt.Sscanf(m[1], "%d", &lineNo)
+		lineNo, err := strconv.Atoi(m[1])
+		if err != nil {
+			continue
+		}
 		if name, ok := lineMnemonic[lineNo]; ok && unrecognizedRe.MatchString(l) {
 			result[name] = false
 		}