feat: East Africa + Southern Africa pills with regional sub-sections

- East Africa pill: merges Uganda + east-africa tags; Uganda pinned first via sub-sections
- Southern Africa pill: covers SA, Namibia, Botswana, Zimbabwe, Zambia, Mozambique; SA/Namibia/Botswana prioritized
- StoryStore.setPill now resets lastSyncedAt to bypass 30s rate-limit on filter switch
- sectionSupplement background fetch populates sparse regional sections in All digest
- SignalFeedView digestContent: flat hero+scroll path for pills without subSections (was showing max 5)
- Theme: removed standalone Uganda pill, wired new sub-section layouts

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Jarvis/Views/Connectivity/ConnectivityView.swift

@@ -20,7 +20,7 @@ struct ConnectivityView: View {
 
     var body: some View {
         ZStack {
-            Color.black.ignoresSafeArea()
+            Palette.background.ignoresSafeArea()
             ScrollView {
                 VStack(alignment: .leading, spacing: 26) {
                     header
@@ -44,7 +44,7 @@ struct ConnectivityView: View {
         HStack {
             Text("Connectivity")
                 .font(.system(size: 22, weight: .heavy))
-                .foregroundStyle(.white)
+                .foregroundStyle(Palette.primaryText)
             Spacer()
             Button { dismiss() } label: {
                 Image(systemName: "xmark")
@@ -84,7 +84,7 @@ struct ConnectivityView: View {
                             VStack(alignment: .leading, spacing: 3) {
                                 Text("Use \(providerName) when remote")
                                     .font(.system(size: 16, weight: .heavy))
-                                    .foregroundStyle(.white)
+                                    .foregroundStyle(Palette.primaryText)
                                 Text("Connects via VPN when not on home network")
                                     .font(.system(size: 12))
                                     .foregroundStyle(Color(hex: "888888"))
@@ -160,7 +160,7 @@ struct ConnectivityView: View {
                             VStack(alignment: .leading, spacing: 3) {
                                 Text("Auto-connect on network change")
                                     .font(.system(size: 16, weight: .heavy))
-                                    .foregroundStyle(.white)
+                                    .foregroundStyle(Palette.primaryText)
                                 Text("Prefers the LAN on a trusted network; switches to \(providerName) when away")
                                     .font(.system(size: 12))
                                     .foregroundStyle(Color(hex: "888888"))
@@ -175,7 +175,7 @@ struct ConnectivityView: View {
                             HStack {
                                 Text("Wait before switching")
                                     .font(.system(size: 15, weight: .bold))
-                                    .foregroundStyle(.white)
+                                    .foregroundStyle(Palette.primaryText)
                                 Spacer()
                                 Stepper(value: $connectivity.switchDelaySeconds, in: 1...60, step: 1) {
                                     Text("\(connectivity.switchDelaySeconds)s")
@@ -195,7 +195,7 @@ struct ConnectivityView: View {
             }
             Text("iOS can't start the \(providerName) tunnel for Jarvis — keep the \(providerName) app connected when away. Jarvis only picks the reachable address.")
                 .font(.system(size: 11))
-                .foregroundStyle(Color(hex: "666666"))
+                .foregroundStyle(Palette.tertiaryText)
                 .lineSpacing(2)
         }
     }
@@ -231,7 +231,7 @@ struct ConnectivityView: View {
             Button { Task { await recheck() } } label: {
                 Text("Re-check")
                     .font(.system(size: 15, weight: .bold))
-                    .foregroundStyle(.white)
+                    .foregroundStyle(Palette.primaryText)
                     .frame(maxWidth: .infinity).frame(height: 50)
                     .background(Palette.surface2)
                     .clipShape(RoundedRectangle(cornerRadius: 14))
@@ -254,7 +254,7 @@ struct ConnectivityView: View {
         Text(t)
             .font(.system(size: 11, weight: .bold, design: .monospaced))
             .kerning(0.8)
-            .foregroundStyle(Color(hex: "555555"))
+            .foregroundStyle(Palette.tertiaryText)
     }
 
     private func Card<Content: View>(@ViewBuilder _ content: () -> Content) -> some View {
@@ -267,7 +267,7 @@ struct ConnectivityView: View {
         HStack(alignment: .center, spacing: 14) {
             Image(systemName: icon)
                 .font(.system(size: 18, weight: .regular))
-                .foregroundStyle(Color(hex: "999999"))
+                .foregroundStyle(Palette.secondaryText)
                 .frame(width: 26)
             content()
         }
@@ -287,7 +287,7 @@ struct ConnectivityView: View {
                 .foregroundStyle(Color(hex: "888888"))
             HStack(spacing: 8) {
                 TextField("", text: text,
-                          prompt: Text(placeholder).foregroundColor(Color(hex: "444444")))
+                          prompt: Text(placeholder).foregroundColor(Palette.mutedText))
                     .font(.system(size: 16, weight: .regular, design: .monospaced))
                     .foregroundStyle(Palette.orange)
                     .autocorrectionDisabled()
@@ -312,7 +312,7 @@ struct ConnectivityView: View {
         case .reachable:   return Color(hex: "33C25E")
         case .unreachable: return Color(hex: "C25555")
         case .checking:    return Palette.healthFailing
-        case .unknown:     return Color(hex: "555555")
+        case .unknown:     return Palette.tertiaryText
         }
     }
     private func dot(for r: Reachability) -> some View {