fix: correct i18n keys in settings modal for metadata archive and proxy settings

- Fix metadata archive DB setting to use correct i18n keys (enableArchiveDb, etc.)
- Restore metadata archive status display and management buttons
- Fix proxy settings to use correct i18n keys (enableProxy, proxyType, proxyHost, etc.)
- Add missing help text for proxy settings
- Add SOCKS4 proxy option
- Add onblur/onkeydown handlers for proxy input fields
- Update locales for new nav items (organization, system, network)

locales/de.json

@@ -270,10 +270,12 @@
             "proxySettings": "Proxy-Einstellungen"
         },
         "nav": {
-            "general": "[TODO: Translate] General",
-            "interface": "[TODO: Translate] Interface",
-            "download": "[TODO: Translate] Download",
-            "advanced": "[TODO: Translate] Advanced"
+            "general": "Allgemein",
+            "interface": "Oberfläche",
+            "download": "Download",
+            "organization": "Organisation",
+            "system": "System",
+            "network": "Netzwerk"
         },
         "search": {
             "placeholder": "[TODO: Translate] Search settings...",

locales/en.json

@@ -273,7 +273,9 @@
             "general": "General",
             "interface": "Interface",
             "download": "Download",
-            "advanced": "Advanced"
+            "organization": "Organization",
+            "system": "System",
+            "network": "Network"
         },
         "search": {
             "placeholder": "Search settings...",

locales/es.json

@@ -270,10 +270,12 @@
             "proxySettings": "Configuración de proxy"
         },
         "nav": {
-            "general": "[TODO: Translate] General",
-            "interface": "[TODO: Translate] Interface",
-            "download": "[TODO: Translate] Download",
-            "advanced": "[TODO: Translate] Advanced"
+            "general": "General",
+            "interface": "Interfaz",
+            "download": "Descarga",
+            "organization": "Organización",
+            "system": "Sistema",
+            "network": "Red"
         },
         "search": {
             "placeholder": "[TODO: Translate] Search settings...",

locales/fr.json

@@ -270,10 +270,12 @@
             "proxySettings": "Paramètres du proxy"
         },
         "nav": {
-            "general": "[TODO: Translate] General",
-            "interface": "[TODO: Translate] Interface",
-            "download": "[TODO: Translate] Download",
-            "advanced": "[TODO: Translate] Advanced"
+            "general": "Général",
+            "interface": "Interface",
+            "download": "Téléchargement",
+            "organization": "Organisation",
+            "system": "Système",
+            "network": "Réseau"
         },
         "search": {
             "placeholder": "[TODO: Translate] Search settings...",

locales/he.json

@@ -270,10 +270,12 @@
             "proxySettings": "הגדרות פרוקסי"
         },
         "nav": {
-            "general": "[TODO: Translate] General",
-            "interface": "[TODO: Translate] Interface",
-            "download": "[TODO: Translate] Download",
-            "advanced": "[TODO: Translate] Advanced"
+            "general": "כללי",
+            "interface": "ממשק",
+            "download": "הורדה",
+            "organization": "ארגון",
+            "system": "מערכת",
+            "network": "רשת"
         },
         "search": {
             "placeholder": "[TODO: Translate] Search settings...",

locales/ja.json

@@ -270,10 +270,12 @@
             "proxySettings": "プロキシ設定"
         },
         "nav": {
-            "general": "[TODO: Translate] General",
-            "interface": "[TODO: Translate] Interface",
-            "download": "[TODO: Translate] Download",
-            "advanced": "[TODO: Translate] Advanced"
+            "general": "一般",
+            "interface": "インターフェース",
+            "download": "ダウンロード",
+            "organization": "整理",
+            "system": "システム",
+            "network": "ネットワーク"
         },
         "search": {
             "placeholder": "[TODO: Translate] Search settings...",

locales/ko.json

@@ -270,10 +270,12 @@
             "proxySettings": "프록시 설정"
         },
         "nav": {
-            "general": "[TODO: Translate] General",
-            "interface": "[TODO: Translate] Interface",
-            "download": "[TODO: Translate] Download",
-            "advanced": "[TODO: Translate] Advanced"
+            "general": "일반",
+            "interface": "인터페이스",
+            "download": "다운로드",
+            "organization": "정리",
+            "system": "시스템",
+            "network": "네트워크"
         },
         "search": {
             "placeholder": "[TODO: Translate] Search settings...",

locales/ru.json

@@ -270,10 +270,12 @@
             "proxySettings": "Настройки прокси"
         },
         "nav": {
-            "general": "[TODO: Translate] General",
-            "interface": "[TODO: Translate] Interface",
-            "download": "[TODO: Translate] Download",
-            "advanced": "[TODO: Translate] Advanced"
+            "general": "Общее",
+            "interface": "Интерфейс",
+            "download": "Загрузка",
+            "organization": "Организация",
+            "system": "Система",
+            "network": "Сеть"
         },
         "search": {
             "placeholder": "[TODO: Translate] Search settings...",

locales/zh-CN.json

@@ -270,10 +270,12 @@
             "proxySettings": "代理设置"
         },
         "nav": {
-            "general": "[TODO: Translate] General",
-            "interface": "[TODO: Translate] Interface",
-            "download": "[TODO: Translate] Download",
-            "advanced": "[TODO: Translate] Advanced"
+            "general": "通用",
+            "interface": "界面",
+            "download": "下载",
+            "organization": "整理",
+            "system": "系统",
+            "network": "网络"
         },
         "search": {
             "placeholder": "[TODO: Translate] Search settings...",

locales/zh-TW.json

@@ -270,10 +270,12 @@
             "proxySettings": "代理設定"
         },
         "nav": {
-            "general": "[TODO: Translate] General",
-            "interface": "[TODO: Translate] Interface",
-            "download": "[TODO: Translate] Download",
-            "advanced": "[TODO: Translate] Advanced"
+            "general": "通用",
+            "interface": "介面",
+            "download": "下載",
+            "organization": "整理",
+            "system": "系統",
+            "network": "網路"
         },
         "search": {
             "placeholder": "[TODO: Translate] Search settings...",