[codex] add OpenCode TUI prompt status (#146)

* feat: add opencode tui prompt status

* fix: read tui status agent reasoning effort

* fix: render real tui quota windows

* fix: avoid duplicate tui variant status

* fix: refresh tui quota after activity

* feat: improve tui quota status

* fix: refine tui quota status

* fix: hide quota on home prompt

* fix: avoid blocking on quota cache writes