perf: Phase 4+5 optimizations — uploads 10x, downloads 2x, concurrent 2x. moka cache, 512KB buffers, remove sync_all, hash-on-write, preloaded queries, bench.sh v3, gitignore storage/. 500MB upload 12.6s->1.3s (392MB/s). RSS 69-113MB, 0 swap.

src/domain/services/i18n_service.rs

@@ -18,8 +18,9 @@ pub enum I18nError {
 pub type I18nResult<T> = Result<T, I18nError>;
 
 /// Supported locales
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default)]
 pub enum Locale {
+    #[default]
     English,
     Spanish,
     French,
@@ -40,7 +41,7 @@ impl Locale {
     }
 
     /// Create from locale code string
-    pub fn from_str(code: &str) -> Option<Self> {
+    pub fn from_code(code: &str) -> Option<Self> {
         match code.to_lowercase().as_str() {
             "en" => Some(Locale::English),
             "es" => Some(Locale::Spanish),
@@ -50,11 +51,6 @@ impl Locale {
             _ => None,
         }
     }
-
-    /// Get default locale
-    pub fn default() -> Self {
-        Locale::English
-    }
 }
 
 /// Interface for i18n service (primary port)