fix(matchers): name matching case-insensitive

internal/resolver/matchers.go

@@ -1,10 +1,12 @@
 package resolver
 
 import (
+	"strings"
+
 	"github.com/UpCloudLtd/upcloud-cli/v3/internal/completion"
 )
 
 // MatchStringWithWhitespace checks if arg that may include whitespace matches given value. This checks both quoted args and auto-completed args handled with completion.RemoveWordBreaks.
 func MatchArgWithWhitespace(arg string, value string) bool {
-	return completion.RemoveWordBreaks(value) == arg || value == arg
+	return completion.RemoveWordBreaks(value) == arg || value == arg || strings.EqualFold(arg, value)
 }

internal/resolver/matchers_test.go

@@ -0,0 +1,43 @@
+package resolver
+
+import "testing"
+
+func TestMatchers(t *testing.T) {
+	cases := []struct {
+		name     string
+		execFn   func(string, string) bool
+		arg      string
+		value    string
+		expected bool
+	}{
+		{
+			name:     "Matcher no case",
+			execFn:   MatchArgWithWhitespace,
+			arg:      "test",
+			value:    "test",
+			expected: true,
+		},
+		{
+			name:     "Matcher with case",
+			execFn:   MatchArgWithWhitespace,
+			arg:      "TeSt",
+			value:    "test",
+			expected: true,
+		},
+		{
+			name:     "Matcher invalid",
+			execFn:   MatchArgWithWhitespace,
+			arg:      "test",
+			value:    "invalid",
+			expected: false,
+		},
+	}
+
+	for _, tt := range cases {
+		t.Run(tt.name, func(t *testing.T) {
+			if result := tt.execFn(tt.arg, tt.value); result != tt.expected {
+				t.Errorf("Matcher() failed %v, wanted %v", result, tt.expected)
+			}
+		})
+	}
+}