Add Vibe Island to Menu Bar Tools

[edwluo]

Types of Changes

• New addition to list
• Fixing bug in existing item in list
• Removing item from list
• Changing structure (organization) of list

Proposed Changes

Adds Vibe Island to the Menu Bar Tools section.

Vibe Island is a native macOS app that turns the MacBook notch into a control panel for 18 AI coding CLIs (Claude Code, Codex, Gemini CLI, Cursor Agent, Droid, OpenCode, Copilot and others). Permission prompts surface in the notch with inline allow/deny, ExitPlanMode previews render with markdown, and clicking a notification jumps back to the exact terminal pane or IDE split that triggered the prompt.

PR Checklist

• I have read the CONTRIBUTING guide
• I have explained why this PR is important
• I have added necessary documentation (if appropriate)
• Alphabetical placement in EN/ZH/JA sections (after Vanilla); appended to KO section per existing convention
• All four locale READMEs updated with native-language descriptions

Further Comments

Native (Swift 6 strict concurrency, AppKit + SwiftUI), one-time purchase, distributed via direct DMG with Sparkle EdDSA-signed auto-updates. Universal binary, macOS 13+. Listed under Menu Bar Tools rather than AI Tools because the notch UI form factor is the primary differentiator, matching the positioning of recent notch additions (#2025 Notchly, #2036 CodexIsland, #2044 muxbar).