cleanup: remove private code nothing uses

Strand/Collect/RawHistoryArchive.swift

@@ -137,10 +137,6 @@ struct RawHistoryArchive {
     /// kept as distinct buckets (their layouts differ despite the shared version number).
     private struct VersionKey: Hashable { let family: String; let version: Int }
 
-    private func versionKey(family: DeviceFamily, version: Int) -> VersionKey {
-        VersionKey(family: family.rawValue, version: version)
-    }
-
     /// Durably append `frames` as JSONL. `trim`/`family` tag each line so the corpus is replayable.
     /// Empty input is a no-op success. See `Result` for the ack contract.
     ///

Strand/Screens/BiofeedbackController.swift

@@ -115,13 +115,6 @@ final class BiofeedbackController: ObservableObject {
         model.buzz(loops: UInt8(clamping: loops), gate: HapticPrefs.breathing)
     }
 
-    /// Schedule one cancellable buzz at `offsetMs` from now (the asyncAfter walk, cancellable on stop).
-    private func scheduleBuzz(loops: Int, afterMs: Int) {
-        let item = DispatchWorkItem { [weak self] in self?.fireBuzz(loops: loops) }
-        pending.append(item)
-        DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(afterMs), execute: item)
-    }
-
     private func startSecondTimer() {
         elapsedSeconds = 0
         secondTimer = Timer.publish(every: 1, on: .main, in: .common)

Strand/Screens/FullDayChartView.swift

@@ -66,8 +66,6 @@ struct FullDayChartView: View {
     /// The visible window the chart's gestures mutate. nil → full day (the chart falls back to `dayBounds`).
     @State private var zoomDomain: ClosedRange<Date>? = nil
     @State private var loading = true
-    /// Bumped on every settled zoom/metric change so the re-read task re-runs at the new resolution.
-    @State private var reloadTick = 0
 
     /// The full clamp the zoom window can never escape — the selected calendar day.
     private var dayBounds: ClosedRange<Date> {

Strand/Screens/IntervalTimerView.swift

@@ -86,14 +86,6 @@ struct IntervalTimerView: View {
         }
     }
 
-    private var phaseTone: StrandTone {
-        switch phase {
-        case .work: return .accent
-        case .rest: return .neutral
-        case .done: return .positive
-        }
-    }
-
     private var isFinished: Bool { phase == .done }
 
     // MARK: Body

Strand/Screens/LiveView.swift

@@ -979,9 +979,6 @@ private struct LivePhysiology: View {
     /// Oura ring actively streaming live HR — trusted stream without a WHOOP bond (see LiveView.ringStreaming).
     private var ringStreaming: Bool { live.connected && live.streamingLiveHR }
 
-    /// The liquid heart pink (matches LiquidThread's default + the mockup #ff6b81).
-    private let liquidHeart = Color(.sRGB, red: 1, green: 107 / 255, blue: 129 / 255, opacity: 1)
-
     var body: some View {
         VStack(alignment: .leading, spacing: NoopMetrics.space4) {
             HStack(alignment: .firstTextBaseline) {

Strand/Screens/LiveWorkoutView.swift

@@ -437,22 +437,6 @@ struct LiveWorkoutView: View {
         .accessibilityLabel(Text("Delete"))
     }
 
-    private var activeSportName: String {
-        model.activeWorkout?.sport ?? WorkoutCatalog.defaultSportName
-    }
-
-    private var workoutTypeGlassButton: some View {
-        Button {
-            // Placeholder — sport-type picker lands later; chrome and sizing stay put.
-        } label: {
-            WorkoutTypeIcon(workoutType: activeSportName, size: 22, weight: .semibold)
-                .frame(width: Self.bottomControlDiameter, height: Self.bottomControlDiameter)
-                .contentShape(Circle())
-        }
-        .nativeLiquidGlassWorkoutControl()
-        .accessibilityLabel(Text("\(WorkoutSource.displaySport(activeSportName)) workout"))
-    }
-
     // MARK: - Helpers
 
     /// Delegates to the shared clock. This carried its own `%d:%02d` with NO hour roll-over, so a

Strand/Screens/SleepView.swift

@@ -2224,14 +2224,6 @@ struct SleepView: View {
         return stages.total > 0 ? (stages, intervals) : nil
     }
 
-    /// yyyy-MM-dd → Date (en_US_POSIX, UTC), per task spec.
-    private static let dayParser: DateFormatter = {
-        let f = DateFormatter()
-        f.locale = Locale(identifier: "en_US_POSIX")
-        f.timeZone = TimeZone(identifier: "UTC")
-        f.dateFormat = "yyyy-MM-dd"
-        return f
-    }()
 }
 
 /// Original atmospheric night hero — photographic moonlit lake plus lightweight static depth layers.

Strand/Screens/TodayView.swift

@@ -1711,69 +1711,6 @@ struct TodayView: View {
 
     // MARK: First-run scoring-guide card (one-time, dismissible)
 
-    /// "New here?", a single, dismissible card that points first-time users at the guide. Tapping the
-    /// card opens the guide; the ✕ closes it. Either action sets `scoringGuideCardSeen`, so it shows
-    /// once and never again. Follows the in-flow, never-modal card pattern.
-    private var scoringGuideFirstRunCard: some View {
-        NoopCard {
-            HStack(alignment: .top, spacing: 14) {
-                Image(systemName: "sparkles")
-                    .font(.system(size: 18))
-                    .foregroundStyle(StrandPalette.accent)
-                    .accessibilityHidden(true)
-                VStack(alignment: .leading, spacing: 4) {
-                    Text("New here?")
-                        .font(StrandFont.headline)
-                        .foregroundStyle(StrandPalette.textPrimary)
-                    Text("See how Charge, Effort and Rest are calculated, and how they differ from WHOOP.")
-                        .font(StrandFont.subhead)
-                        .foregroundStyle(StrandPalette.textSecondary)
-                        .fixedSize(horizontal: false, vertical: true)
-                    Button {
-                        scoringGuideCardSeen = true
-                        showGuideTop = true
-                    } label: {
-                        Label("How your scores work", systemImage: "arrow.right")
-                            .font(StrandFont.subhead)
-                    }
-                    .buttonStyle(.plain)
-                    .foregroundStyle(StrandPalette.accent)
-                    .padding(.top, 2)
-                }
-                Spacer(minLength: 0)
-                Button {
-                    // Dismiss INTO the Updates inbox (restorable), rather than permanently hiding.
-                    withAnimation(StrandMotion.interactive) {
-                        dismissTodayCard(
-                            id: "newHere",
-                            title: String(localized: "New here?"),
-                            message: String(localized: "How Charge, Effort and Rest are calculated, and how they differ from WHOOP.")
-                        )
-                    }
-                } label: {
-                    Image(systemName: "xmark")
-                        .font(.system(size: 12, weight: .semibold))
-                        .foregroundStyle(StrandPalette.textTertiary)
-                        .padding(6)
-                        .contentShape(Rectangle())
-                }
-                .buttonStyle(.plain)
-                .accessibilityLabel("Dismiss")
-            }
-            // The whole card is tappable as the primary action; the ✕ stops the tap from also firing.
-            .contentShape(Rectangle())
-            .onTapGesture {
-                #if os(iOS)
-                StrandHaptic.selection.play()
-                #endif
-                scoringGuideCardSeen = true
-                showGuideTop = true
-            }
-        }
-        // Press-down feedback for the tappable card surface.
-        .strandPressable()
-    }
-
     // MARK: Readiness, on-device training-readiness synthesis (HRV / resting-HR / load).
 
     /// S4: Readiness now lives behind the Charge-ring tap (in `chargeBreakdownSheet`), not as a standalone
@@ -3168,14 +3105,6 @@ struct TodayView: View {
         return hrvInsightDetail(d, score: score)
     }
 
-    /// The Synthesis status colour, keyed on the carried prior recovery when carrying, else today's.
-    private func synthesisCardColor(score: Double?) -> Color {
-        if let rec = lastScoredRecoveryDay?.recovery {
-            return StrandPalette.recoveryColor(rec)
-        }
-        return score.map { StrandPalette.recoveryColor($0) } ?? StrandPalette.textTertiary
-    }
-
     /// Screen-4 insight headline, when the HRV baseline is established, the gold "primed" read
     /// keyed on how far today's HRV sits above/below the learned baseline ("HRV 12% over baseline");
     /// otherwise the recovery-state word. Purely a re-presentation of the existing recovery + HRV
@@ -5276,27 +5205,6 @@ struct TodayView: View {
         }
     }
 
-    private var dateLine: String {
-        // The selected day's date when navigated; today's banked-row date (or today) at offset 0.
-        if selectedDayOffset == 0, let day = repo.today?.day, let date = Self.dayParser.date(from: day) {
-            return date.formatted(
-                .dateTime.weekday(.wide).day().month(.wide).locale(AppLanguage.activeLocale)
-            )
-        }
-        return selectedLogicalDay.formatted(
-            .dateTime.weekday(.wide).day().month(.wide).locale(AppLanguage.activeLocale)
-        )
-    }
-
-    /// Hero title that names the selected day, "Today's"/"Yesterday's"/"Day's" Synthesis.
-    private var synthesisTitle: LocalizedStringKey {
-        switch selectedDayOffset {
-        case 0:  return "Today’s Synthesis"
-        case 1:  return "Yesterday’s Synthesis"
-        default: return "Synthesis"
-        }
-    }
-
     /// Section overline naming the selected day, "Today"/"Yesterday"/"EEE d MMM".
     private var selectedDayOverline: String {
         switch selectedDayOffset {
@@ -5357,12 +5265,6 @@ struct TodayView: View {
         }
     }
 
-    private func ringSupporting(_ d: DailyMetric?) -> String {
-        let hrv = d?.avgHrv.map { String(localized: "\(Int($0.rounded())) ms") } ?? " - ms"
-        let rhr = d?.restingHr.map { "\($0)" } ?? "—"
-        return String(localized: "HRV \(hrv) · RHR \(rhr)")
-    }
-
     private func sleepValue(_ d: DailyMetric?) -> String {
         guard let m = d?.totalSleepMin else { return "—" }
         let h = Int(m) / 60, mm = Int(m) % 60

Strand/Screens/TrendsView.swift

@@ -83,12 +83,6 @@ struct TrendsView: View {
 
     // MARK: Window selection (relative to the LATEST day, with auto-expand)
 
-    /// The latest recorded day across all history (anchors every window).
-    private var latestDay: Date? {
-        guard let d = repo.days.last?.day else { return nil }
-        return date(d)
-    }
-
     /// Days for a given range, taken RELATIVE TO TODAY (the phone's local date) — not the latest
     /// recorded day, which on a stale import anchored W/M/3M to months-old data so it looked current
     /// (issue #23). Empty short windows auto-widen (see `resolve`), so old imports surface under a

Strand/Screens/WeeklyDigestView.swift

@@ -146,8 +146,6 @@ struct WeeklyDigestContent: View {
     @Environment(\.dynamicTypeSize) private var dynamicTypeSize
     #endif
 
-    /// Display order: the two daily scores first, then the nightly signals.
-    private static let order: [WeeklyMetric] = [.charge, .effort, .rest, .hrv, .rhr]
     /// The three headline 0–100 scores shown as domain summaries.
     private static let scoreOrder: [WeeklyMetric] = [.charge, .effort, .rest]