Rebrand Ultracode → Orchestra

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]>

NucleicRemote/NucleicRemote/Views/ProjectsView.swift

@@ -66,7 +66,7 @@ struct ProjectDetailView: View {
                     HStack(alignment: .bottom, spacing: 8) {
                         TextField("Start a chat in \(project.name)…", text: $draft, axis: .vertical)
                             .textFieldStyle(.roundedBorder).lineLimit(1...4)
-                            .ultracodeGlow(active: MobileEfforts.isUltracode(effort))
+                            .orchestraGlow(active: MobileEfforts.isOrchestra(effort))
                         Button {
                             store.startChat(in: project.id, message: draft, effort: effort)
                             draft = ""