feat: add support for claude thought signatures

feat: add auto-collapsing code blocks

feat: automatically enable aihubmix app code for specific base URLs

feat: upgrade flutter to 3.38.4 and bump version

feat: save Mermaid diagrams to gallery on mobile

chore: bump version to 1.1.2+17

feat: allow selecting multiple instruction injections

build: bump version to 1.1.0+15

style: increase desktop nav rail width

feat: add free tier models for SiliconFlow