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/en.json

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