- make staging real in the git panel: new /stage and /unstage endpoints,
/status now reports the actual index via porcelain -z (handles renames,
conflicts, and paths with spaces), and Stage/Unstage All run real git
commands instead of toggling client-side state
- add branch search to the header dropdown and Branches tab
- persist the chosen permission mode per provider so a brand-new chat
keeps it once the session id arrives, instead of reverting to default
- replace cmdk's fuzzy model search with strict token matching so
"chatgpt" no longer surfaces unrelated models
- unit tests for the git status parser
