fix(i18n): preserve exact namespace matches

Co-Authored-By: Virgil <virgil@lethean.io>

service.go

@@ -364,7 +364,11 @@ func (s *Service) Prompt(key string) string {
 	if key == "" {
 		return ""
 	}
-	return s.T(namespaceLookupKey("prompt", key))
+	lookupKey := namespaceLookupKey("prompt", key)
+	if text, ok := s.translateWithStatus(lookupKey); ok {
+		return text
+	}
+	return lookupKey
 }
 
 // CurrentPrompt is a short alias for Prompt.
@@ -378,17 +382,19 @@ func (s *Service) Lang(key string) string {
 	if key == "" {
 		return ""
 	}
-	if got := s.T(namespaceLookupKey("lang", key)); got != namespaceLookupKey("lang", key) {
-		return got
+	lookupKey := namespaceLookupKey("lang", key)
+	if text, ok := s.translateWithStatus(lookupKey); ok {
+		return text
 	}
 	if idx := indexAny(key, "-_"); idx > 0 {
 		if base := key[:idx]; base != "" {
-			if got := s.T(namespaceLookupKey("lang", base)); got != namespaceLookupKey("lang", base) {
-				return got
+			baseLookupKey := namespaceLookupKey("lang", base)
+			if text, ok := s.translateWithStatus(baseLookupKey); ok {
+				return text
 			}
 		}
 	}
-	return namespaceLookupKey("lang", key)
+	return lookupKey
 }
 
 func (s *Service) AvailableLanguages() []string {

service_test.go

@@ -434,6 +434,25 @@ func TestServicePromptAndLang(t *testing.T) {
 	}
 }
 
+func TestServicePromptAndLangExactMatch(t *testing.T) {
+	svc, err := New()
+	if err != nil {
+		t.Fatalf("New() failed: %v", err)
+	}
+
+	svc.AddMessages("en", map[string]string{
+		"prompt.exact": "prompt.exact",
+		"lang.exact":   "lang.exact",
+	})
+
+	if got, want := svc.Prompt("exact"), "prompt.exact"; got != want {
+		t.Fatalf("Prompt(exact) = %q, want %q", got, want)
+	}
+	if got, want := svc.Lang("exact"), "lang.exact"; got != want {
+		t.Fatalf("Lang(exact) = %q, want %q", got, want)
+	}
+}
+
 func TestNewWithLoaderNormalisesLanguageTags(t *testing.T) {
 	svc, err := NewWithLoader(underscoreLangLoader{})
 	if err != nil {