add MAI-Code-1-Flash model and reasoning-effort metadata
add quick action model catalog cache
resolve quick action models dynamically
add 'none' reasoning effort level

add models constants and quick action defaults
migrate default model from deprecated gpt-4.1 to gpt-5-mini

extension: add parallel image upload capability to API client (3ce536f)
extension: enhance chat UI for image attachments and error reporting (60ca515)
extension: implement pre-upload image workflow in chat service (eb73def)
extension: improve screenshot quality and deprecate full-page capture (eb20dc5)
extension: update extension entrypoints and sidepanel with image support (34138c9)

Features
- disable model picker after chat starts and add session recovery retry logic (c5e7b73)
- insert pending text at cursor position instead of replacing draft (18cc61b)
- add dynamic backend URL configuration from storage (1f22e19)

Features
extension: add model search, pricing tiers, and account status display
extension: replace auth status badge with user avatar icon and tooltip
Refactoring
extension: add browser compatibility layer for Chrome/Firefox API differences
extension: add programmatic side panel opening with fallback for Firefox