fix: use $(cat) instead of $(</dev/stdin) for portable stdin reading

refactor: consolidate jq calls and optimize shell ops

feat: replace rate-limit parsing with oauth usage api

feat: accurate usage limit timer and token-based usage percentage

fix: show stale msg count instead of 0 during background refresh

feat: accurate usage limit timer and message count

feat: add agent progress tracking with tool counts

refactor: remove running/in-progress tool and agent state

refactor: remove "msgs" label from usage limit display

refactor: show session cost before time in statusline

feat: add usage limit countdown and session skill progress

refactor: remove duplicate file stats from statusline

refactor: use built-in context percentage

feat: smart path truncation for file operations

fix: clear stale running agents after 2 turns