Renames the orchestration mode's user-facing brand and all code identifiers
(UltracodeStyle→OrchestraStyle, isUltracode→isOrchestra, AppTheme.ultracode→
.orchestra, etc.). The canonical effort sentinel becomes "orchestra"; the legacy
"ultracode" token is still recognized so a persisted/in-flight session keeps
working. Comment referencing Claude Code's own ultracode mode kept accurate.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
