fix: startup

[franklinkim]

Description

Fix menubar app silently failing to launch on bad config, and add version display + app rebranding as Dockprox.app.

Type of Change

• 🐛 Bug fix
• ✨ New feature
• 💥 Breaking change
• 📝 Documentation
• ♻️ Refactoring
• 🏃 Performance
• ✅ Tests
• 🔐 Security
• 🔧 Build/CI

Changes

• Fix: dockprox-menubar no longer exits invisibly on a bad/missing config — log setup and the tray now happen before config parsing, so failures surface as
  StateError in a running tray instead of a silent process exit
• Move default log directory to org.foomo.dockprox cache path
• Reorder run() setup for clarity
• Add version display as the first tray menu item; clicking it opens the GitHub releases page
• Rename the packaged app bundle to Dockprox.app (Info.plist, wails app name, Makefile, release workflow, Homebrew cask, README)

Checklist

• My code adheres to the coding and style guidelines of the project.
• I have performed a self-review of my own code.
• I have commented on my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.