fix(talk): align sessions and chat UI

apps/shared/ClawdisKit/Sources/ClawdisChatUI/ChatMessageViews.swift

@@ -137,9 +137,10 @@ private struct ChatBubbleShape: InsettableShape {
 struct ChatMessageBubble: View {
     let message: ClawdisChatMessage
     let style: ClawdisChatView.Style
+    let userAccent: Color?
 
     var body: some View {
-        ChatMessageBody(message: self.message, isUser: self.isUser, style: self.style)
+        ChatMessageBody(message: self.message, isUser: self.isUser, style: self.style, userAccent: self.userAccent)
             .frame(maxWidth: ChatUIConstants.bubbleMaxWidth, alignment: self.isUser ? .trailing : .leading)
             .frame(maxWidth: .infinity, alignment: self.isUser ? .trailing : .leading)
             .padding(.horizontal, 2)
@@ -153,6 +154,7 @@ private struct ChatMessageBody: View {
     let message: ClawdisChatMessage
     let isUser: Bool
     let style: ClawdisChatView.Style
+    let userAccent: Color?
 
     var body: some View {
         let text = self.primaryText
@@ -287,7 +289,7 @@ private struct ChatMessageBody: View {
 
     private var bubbleFillColor: Color {
         if self.isUser {
-            return ClawdisChatTheme.userBubble
+            return self.userAccent ?? ClawdisChatTheme.userBubble
         }
         if self.style == .onboarding {
             return ClawdisChatTheme.onboardingAssistantBubble

apps/shared/ClawdisKit/Sources/ClawdisChatUI/ChatTheme.swift

@@ -101,11 +101,7 @@ enum ClawdisChatTheme {
     }
 
     static var userBubble: Color {
-        #if os(macOS)
-        Color(nsColor: .systemBlue)
-        #else
-        Color(uiColor: .systemBlue)
-        #endif
+        Color(red: 127 / 255.0, green: 184 / 255.0, blue: 212 / 255.0)
     }
 
     static var assistantBubble: Color {

apps/shared/ClawdisKit/Sources/ClawdisChatUI/ChatView.swift

@@ -13,6 +13,7 @@ public struct ClawdisChatView: View {
     @State private var hasPerformedInitialScroll = false
     private let showsSessionSwitcher: Bool
     private let style: Style
+    private let userAccent: Color?
 
     private enum Layout {
         #if os(macOS)
@@ -37,11 +38,13 @@ public struct ClawdisChatView: View {
     public init(
         viewModel: ClawdisChatViewModel,
         showsSessionSwitcher: Bool = false,
-        style: Style = .standard)
+        style: Style = .standard,
+        userAccent: Color? = nil)
     {
         self._viewModel = State(initialValue: viewModel)
         self.showsSessionSwitcher = showsSessionSwitcher
         self.style = style
+        self.userAccent = userAccent
     }
 
     public var body: some View {
@@ -74,7 +77,7 @@ public struct ClawdisChatView: View {
                 ScrollView {
                     LazyVStack(spacing: Layout.messageSpacing) {
                         ForEach(self.visibleMessages) { msg in
-                            ChatMessageBubble(message: msg, style: self.style)
+                            ChatMessageBubble(message: msg, style: self.style, userAccent: self.userAccent)
                                 .frame(
                                     maxWidth: .infinity,
                                     alignment: msg.role.lowercased() == "user" ? .trailing : .leading)

apps/shared/ClawdisKit/Sources/ClawdisChatUI/ChatViewModel.swift

@@ -150,9 +150,36 @@ public final class ClawdisChatViewModel {
     }
 
     private static func decodeMessages(_ raw: [AnyCodable]) -> [ClawdisChatMessage] {
-        raw.compactMap { item in
+        let decoded = raw.compactMap { item in
             (try? ChatPayloadDecoding.decode(item, as: ClawdisChatMessage.self))
         }
+        return Self.dedupeMessages(decoded)
+    }
+
+    private static func dedupeMessages(_ messages: [ClawdisChatMessage]) -> [ClawdisChatMessage] {
+        var result: [ClawdisChatMessage] = []
+        result.reserveCapacity(messages.count)
+        var seen = Set<String>()
+
+        for message in messages {
+            guard let key = Self.dedupeKey(for: message) else {
+                result.append(message)
+                continue
+            }
+            if seen.contains(key) { continue }
+            seen.insert(key)
+            result.append(message)
+        }
+
+        return result
+    }
+
+    private static func dedupeKey(for message: ClawdisChatMessage) -> String? {
+        guard let timestamp = message.timestamp else { return nil }
+        let text = message.content.compactMap { $0.text }.joined(separator: "\n")
+            .trimmingCharacters(in: .whitespacesAndNewlines)
+        guard !text.isEmpty else { return nil }
+        return "\(message.role)|\(timestamp)|\(text)"
     }
 
     private func performSend() async {

apps/shared/ClawdisKit/Tests/ClawdisKitTests/ChatViewModelTests.swift

@@ -117,6 +117,29 @@ private extension TestChatTransportState {
 }
 
 @Suite struct ChatViewModelTests {
+    @Test func dedupesDuplicateHistoryMessages() async throws {
+        let ts = Date().timeIntervalSince1970 * 1000
+        let duplicate = AnyCodable([
+            "role": "assistant",
+            "content": [["type": "text", "text": "Same message"]],
+            "timestamp": ts,
+        ])
+        let history = ClawdisChatHistoryPayload(
+            sessionKey: "main",
+            sessionId: "sess-main",
+            messages: [duplicate, duplicate],
+            thinkingLevel: "off")
+
+        let transport = TestChatTransport(historyResponses: [history])
+        let vm = await MainActor.run { ClawdisChatViewModel(sessionKey: "main", transport: transport) }
+
+        await MainActor.run { vm.load() }
+        try await waitUntil("bootstrap") { await MainActor.run { !vm.messages.isEmpty } }
+
+        #expect(await MainActor.run { vm.messages.count } == 1)
+        #expect(await MainActor.run { vm.messages.first?.role } == "assistant")
+    }
+
     @Test func streamsAssistantAndClearsOnFinal() async throws {
         let sessionId = "sess-main"
         let history1 = ClawdisChatHistoryPayload(