test(cli): restore stable git utils coverage

chore(cli): remove unused open dependency

fix(webui): avoid rebuilding file columns without segments

test(cli): stabilize git project context coverage

Fix Windows cwd picker host root handling

fix(cli): fail fast when no backends are available

fix(cli): tighten windows cwd containment check

fix(cli): validate windows paths within cwd

Add ACP context left usage display

build: upgrade vite to v8

build(aur): add mobvibe-cli-git package

fix(webui): restore build and test typecheck

test: add image upload coverage

refine chat footer image upload entry

Add ACP image prompt support through gateway