Add i18n support for Control Widgets

[Copilot]

Control Widgets displayed hardcoded English strings. Added localization following the project's .xcstrings pattern.

Changes

• Added 6 localization keys to Localizable.xcstrings with English and Simplified Chinese translations:

  • vpn_connected, vpn_disconnected, vpn_connect, vpn_disconnect
  • toggle_vpn, toggle_vpn_connection

• Updated ControlWidgetsControl.swift to use LocalizedStringResource:

  // Before
  Label(isOn ? "Connected" : "Disconnected", systemImage: "network")
      .controlWidgetActionHint(isOn ? "Disconnect" : "Connect")
  
  // After  
  Label(isOn ? LocalizedStringResource("vpn_connected") : LocalizedStringResource("vpn_disconnected"), systemImage: "network")
      .controlWidgetActionHint(isOn ? LocalizedStringResource("vpn_disconnect") : LocalizedStringResource("vpn_connect"))

Widget text now respects device language settings.

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[Copilot]

Pull request overview

This PR adds internationalization (i18n) support to Control Widgets by replacing hardcoded English strings with localized resources. The changes enable the widget to display text in the user's preferred language, currently supporting English and Simplified Chinese.

Changes:

• Added 6 localization keys to Localizable.xcstrings with English and Simplified Chinese translations
• Updated ControlWidgetsControl.swift to use localized strings instead of hardcoded English text
• Applied localization to widget labels, action hints, descriptions, and intent parameters

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
EasyTier/Localizable.xcstrings	Added 6 new localization keys (vpn_connected, vpn_disconnected, vpn_connect, vpn_disconnect, toggle_vpn, toggle_vpn_connection) with English and Simplified Chinese translations
ControlWidgets/ControlWidgetsControl.swift	Replaced hardcoded English strings with localized string resources for widget labels, action hints, descriptions, and intent parameters

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[Copilot]

The LocalizedStringResource constructor should not be used to wrap localization keys. According to the pattern used elsewhere in the codebase (e.g., EasyTierShortcuts.swift), localization keys should be passed as string literals directly without wrapping them in LocalizedStringResource(). The compiler can automatically convert string literals to LocalizedStringResource.

Change from:

• LocalizedStringResource("vpn_connected")
• LocalizedStringResource("vpn_disconnected")
• LocalizedStringResource("vpn_disconnect")
• LocalizedStringResource("vpn_connect")

To:

• "vpn_connected"
• "vpn_disconnected"
• "vpn_disconnect"
• "vpn_connect"

[Copilot]

The LocalizedStringResource constructor should not be used to wrap the localization key. Following the pattern used elsewhere in the codebase, the localization key should be passed as a string literal directly without wrapping it in LocalizedStringResource().

Change from:
LocalizedStringResource("toggle_vpn_connection")

To:
"toggle_vpn_connection"

Suggested change

	.description(LocalizedStringResource("toggle_vpn_connection"))
	.description("toggle_vpn_connection")

[Copilot]

The @parameter title should not use "vpn_connected" as it represents a boolean parameter for the connection state (both connected and disconnected states), not just the connected state. Consider using a more neutral localization key like "toggle_vpn" or a new key such as "vpn_state" that better represents both states.

Additionally, the LocalizedStringResource constructor should not be used. The localization key should be passed as a string literal directly.

Suggested change

	@Parameter(title: LocalizedStringResource("vpn_connected"))
	@Parameter(title: "vpn_state")