Fix image replacement to properly replace placeholders in-place

Fix manual edit mode to prevent element selection for chat edit mode

Add ESC key to cancel element selection after selecting

Fix fullscreen mode header to use shadcn style

Update delete button to appear on hover as red trash icon

Fix delete button adding X to input field

Fix cancel and add buttons in custom quick start dialog

Add custom quick starts functionality

Fix window.onload null reference error

Fix auto-generate images confirmation dialog stalling issue

Fix saveConfig null reference error

Add ESC key to cancel element selection with toast notification

Remove palette emoji from auto-generate checkbox and generate image button

Add auto-generate images checkbox below send button

Update VibeCoder to minimalistic shadcn-inspired design