v1.2.4

What's New

✨ Features

• OpenRouter support — Unified API for 200+ models (amazon/nova-2-lite-v1 default)
• Model search — Searchable model picker in settings with filter & count display
• API key masking — Keys are hidden after save, shown as •••••••• in settings
• Model selection dialog — New dialog-based model picker with radio-button style selection

🛠 Improvements

• Default port changed from 3000 to 7250
• API key persistence fixed in onboarding flow
• Model selection logic rewritten (stale closure bugs fixed)
• README hero section with screenshot

📦 Other

• Removed CONTRIBUTING.md
• Cleaned up README (removed Configuration, Tech Stack, Contributing sections)