Add initial project files and configurations for clawd_code

SCROLLING_FIX_SUMMARY.md

@@ -0,0 +1,59 @@
+# Chat View Scrolling Fix Summary
+
+## Problem Analysis
+The chat view had inconsistent scroll thumb behavior where it would "jump around" during use. This was caused by:
+
+1. **Aggressive auto-scrolling**: The `_scrollToBottom()` function was called on every build when messages were present
+2. **Interference with user scrolling**: During message streaming, the chat provider calls `notifyListeners()` frequently (on each text delta), triggering rebuilds and auto-scrolling
+3. **No user scroll detection**: The system couldn't distinguish between user-initiated scrolling and auto-scrolling
+
+## Solution Implemented
+
+### 1. Smart Auto-Scrolling Logic
+- Only auto-scrolls when new messages arrive AND user is near the bottom (within 150px)
+- Uses `_isNearBottom()` to check scroll position
+- Tracks actual message content changes, not just rebuilds
+
+### 2. User Scroll Detection
+- Uses `ScrollController` listener to detect when user is scrolling
+- Implements 150ms debouncing to detect when scrolling stops
+- Sets `_isUserScrolling` flag to prevent auto-scrolling while user is interacting
+
+### 3. Jump-to-Bottom Button
+- When user scrolls away from bottom (>200px) and new messages arrive, shows a "New messages" button
+- Button appears in bottom-right corner with subtle animation
+- Clicking it smoothly scrolls to bottom and hides the button
+- Button only shows when there are actually new messages while user is scrolled away
+
+### 4. Message Change Tracking
+- Tracks previous message contents to detect actual changes (not just re-renders)
+- Prevents unnecessary auto-scrolling on provider updates that don't change message content
+
+## Technical Details
+
+### Key Variables
+- `_isUserScrolling`: Tracks if user is actively scrolling
+- `_showJumpToBottom`: Whether to show the jump-to-bottom button
+- `_hasNewMessagesWhileScrolledAway`: Whether new messages arrived while user was scrolled away
+- `_previousMessageContents`: List of previous message contents for change detection
+
+### Scroll Thresholds
+- **Near bottom**: Within 150px of bottom (triggers auto-scroll)
+- **Far from bottom**: More than 200px from bottom (shows jump button)
+- **Debounce timeout**: 150ms (detects scroll stop)
+
+## Benefits
+1. **Smooth scrolling**: No more jumpy scroll thumb during streaming
+2. **User control**: Users can scroll up to read previous messages without being forced back to bottom
+3. **Clear UX**: Jump-to-bottom button provides clear indication of new messages
+4. **Performance**: Reduces unnecessary scroll animations
+
+## Testing
+To test the fix:
+1. Send multiple messages to create a scrollable chat
+2. Scroll up to read previous messages during streaming
+3. Observe that auto-scroll doesn't interfere
+4. See the jump-to-bottom button appear when new messages arrive
+5. Click the button to smoothly return to bottom
+
+The fix maintains the original behavior for users who are at/near the bottom while preventing the disruptive scrolling behavior for users actively reading previous messages.

lib/src/api/openrouter_client.dart

@@ -103,6 +103,218 @@ class OpenRouterClient {
     return ResponseParser.parseOpenRouterResponse(response);
   }
 
+  Future<ApiMessage> createStreamingMessage({
+    required String model,
+    required int maxTokens,
+    required List<Map<String, dynamic>> messages,
+    String? system,
+    double? temperature,
+    List<Map<String, dynamic>>? tools,
+    String? toolChoice,
+    void Function(String delta)? onTextDelta,
+  }) async {
+    final requestBody = <String, dynamic>{
+      "model": model,
+      "max_tokens": maxTokens,
+      "messages": messages,
+      "stream": true,
+      "stream_options": <String, dynamic>{"include_usage": true},
+    };
+
+    if (system != null) {
+      if (messages.isEmpty || messages.first["role"] != "system") {
+        requestBody["messages"] = [
+          {"role": "system", "content": system},
+          ...messages,
+        ];
+      }
+    }
+
+    if (temperature != null) {
+      requestBody["temperature"] = temperature;
+    }
+
+    if (tools != null && tools.isNotEmpty) {
+      requestBody["tools"] = tools;
+      if (toolChoice != null) {
+        requestBody["tool_choice"] = toolChoice;
+      }
+    }
+
+    final url = Uri.parse("$_baseUrl/chat/completions");
+    final headers = _buildHeaders();
+
+    final textBuffer = StringBuffer();
+    final toolCalls = <int, _StreamingToolCallBuilder>{};
+    String responseId = "";
+    String responseModel = model;
+    String? finishReason;
+    Map<String, dynamic>? usage;
+
+    try {
+      if (_requestCancelled) {
+        throw const RequestCancelledException();
+      }
+
+      final request = await _httpClient.openUrl("POST", url);
+      headers.forEach((key, value) {
+        request.headers.set(key, value);
+      });
+      request.headers.contentType = ContentType.json;
+      request.write(jsonEncode(requestBody));
+
+      final response = await request.close();
+      if (response.statusCode >= 400) {
+        final responseBody = await response.transform(utf8.decoder).join();
+        print(
+          "OpenRouter API error ${response.statusCode} for /chat/completions: $responseBody",
+        );
+        _handleErrorResponse(response.statusCode, responseBody);
+      }
+
+      final responseStream = response
+          .transform(utf8.decoder)
+          .transform(const LineSplitter());
+
+      await for (final line in responseStream) {
+        if (_requestCancelled) {
+          throw const RequestCancelledException();
+        }
+
+        final event = StreamingResponseParser.parseStreamLine(line);
+        if (StreamingResponseParser.isDone(event)) {
+          break;
+        }
+        if (event == null) {
+          continue;
+        }
+
+        final id = event["id"];
+        if (id is String && id.isNotEmpty) {
+          responseId = id;
+        }
+
+        final streamedModel = event["model"];
+        if (streamedModel is String && streamedModel.isNotEmpty) {
+          responseModel = streamedModel;
+        }
+
+        final rawUsage = event["usage"];
+        if (rawUsage is Map<String, dynamic>) {
+          usage = rawUsage;
+        }
+
+        final choices = event["choices"];
+        if (choices is! List || choices.isEmpty) {
+          continue;
+        }
+
+        final firstChoice = choices.first;
+        if (firstChoice is! Map<String, dynamic>) {
+          continue;
+        }
+
+        final rawFinishReason = firstChoice["finish_reason"];
+        if (rawFinishReason is String && rawFinishReason.isNotEmpty) {
+          finishReason = rawFinishReason == "tool_calls"
+              ? "tool_use"
+              : rawFinishReason;
+        }
+
+        final delta = firstChoice["delta"];
+        if (delta is! Map<String, dynamic>) {
+          continue;
+        }
+
+        final content = delta["content"];
+        if (content is String && content.isNotEmpty) {
+          textBuffer.write(content);
+          onTextDelta?.call(content);
+        }
+
+        final toolCallDeltas = delta["tool_calls"];
+        if (toolCallDeltas is! List) {
+          continue;
+        }
+
+        for (final rawToolCall in toolCallDeltas) {
+          if (rawToolCall is! Map<String, dynamic>) {
+            continue;
+          }
+
+          final index = (rawToolCall["index"] as num?)?.toInt() ?? 0;
+          final builder = toolCalls.putIfAbsent(
+            index,
+            () => _StreamingToolCallBuilder(),
+          );
+
+          final toolCallId = rawToolCall["id"];
+          if (toolCallId is String && toolCallId.isNotEmpty) {
+            builder.id = toolCallId;
+          }
+
+          final rawType = rawToolCall["type"];
+          if (rawType is String && rawType.isNotEmpty) {
+            builder.type = rawType;
+          }
+
+          final function = rawToolCall["function"];
+          if (function is! Map<String, dynamic>) {
+            continue;
+          }
+
+          final name = function["name"];
+          if (name is String && name.isNotEmpty) {
+            builder.name = name;
+          }
+
+          final arguments = function["arguments"];
+          if (arguments is String && arguments.isNotEmpty) {
+            builder.arguments.write(arguments);
+          }
+        }
+      }
+
+      final contentBlocks = <Map<String, dynamic>>[];
+      final text = textBuffer.toString();
+      if (text.isNotEmpty) {
+        contentBlocks.add(<String, dynamic>{"type": "text", "text": text});
+      }
+
+      final orderedToolCalls = toolCalls.entries.toList()
+        ..sort((a, b) => a.key.compareTo(b.key));
+      for (final entry in orderedToolCalls) {
+        final builder = entry.value;
+        contentBlocks.add(<String, dynamic>{
+          "type": "tool_use",
+          "id": builder.id,
+          "name": builder.name,
+          "input": builder.parsedArguments,
+        });
+      }
+
+      return ApiMessage(
+        id: responseId,
+        type: "message",
+        role: "assistant",
+        content: contentBlocks,
+        model: responseModel,
+        stopReason: finishReason,
+        usage: usage,
+        inputTokens: (usage?["prompt_tokens"] as num?)?.toInt(),
+        outputTokens: (usage?["completion_tokens"] as num?)?.toInt(),
+      );
+    } catch (e) {
+      if (_requestCancelled) {
+        throw const RequestCancelledException();
+      }
+      if (_config.enableLogging) {
+        _log("[API STREAM ERROR] $e");
+      }
+      rethrow;
+    }
+  }
+
   // List available models
   Future<List<Map<String, dynamic>>> listModels() async {
     final response = await _makeRequest(method: "GET", endpoint: "/models");
@@ -225,6 +437,27 @@ class OpenRouterClient {
   }
 }
 
+class _StreamingToolCallBuilder {
+  String id = "";
+  String type = "function";
+  String name = "";
+  final StringBuffer arguments = StringBuffer();
+
+  Map<String, dynamic> get parsedArguments {
+    final raw = arguments.toString();
+    if (raw.isEmpty) {
+      return <String, dynamic>{};
+    }
+
+    try {
+      final decoded = jsonDecode(raw);
+      return decoded is Map<String, dynamic> ? decoded : <String, dynamic>{};
+    } catch (_) {
+      return <String, dynamic>{};
+    }
+  }
+}
+
 class RequestCancelledException implements Exception {
   const RequestCancelledException();
 

lib/src/api/response_parser.dart

@@ -1,6 +1,8 @@
 // Response parser for Anthropic Message API responses
 // Ported from old_repo/services/api/errors.ts and claude.ts
 
+import "dart:convert";
+
 import "api_types.dart";
 
 // Parse Message API response into ApiMessage model
@@ -145,12 +147,15 @@ class ErrorParser {
 class StreamingResponseParser {
   // parse a streamed event from newline-delimited JSON
   static Map<String, dynamic>? parseStreamLine(String line) {
-    if (line.trim().isEmpty) return null;
+    final trimmed = line.trim();
+    if (trimmed.isEmpty || trimmed.startsWith(":")) return null;
 
     try {
       // handle SSE format (data: {...})
       final data = line.startsWith("data: ") ? line.substring(6) : line;
-      // simple JSON parsing - in production would use json.decode
+      if (data.trim() == "[DONE]") {
+        return <String, dynamic>{"type": "done"};
+      }
       return _parseJson(data);
     } catch (_) {
       return null;
@@ -158,9 +163,8 @@ class StreamingResponseParser {
   }
 
   static Map<String, dynamic>? _parseJson(String jsonStr) {
-    // stubbed - would use dart:convert.jsonDecode in real impl
+    final decoded = jsonDecode(jsonStr);
-    // for now just return null to indicate parsing would happen
+    return decoded is Map<String, dynamic> ? decoded : null;
-    return null;
   }
 
   // check if streamed event is a message delta (partial response)
@@ -177,6 +181,11 @@ class StreamingResponseParser {
     return type == "message_stop";
   }
 
+  static bool isDone(Map<String, dynamic>? event) {
+    if (event == null) return false;
+    return event["type"] == "done";
+  }
+
   // extract partial text from delta event
   static String? extractDeltaText(Map<String, dynamic>? event) {
     if (event == null) return null;

lib/src/chat/tool_loop_service.dart

@@ -13,11 +13,13 @@ class ToolLoopResult {
     required this.apiMessages,
     required this.responseText,
     required this.response,
+    required this.finalResponseWasStreamed,
   });
 
   final List<Map<String, dynamic>> apiMessages;
   final String responseText;
   final ApiMessage response;
+  final bool finalResponseWasStreamed;
 }
 
 class ToolLoopException implements Exception {
@@ -48,6 +50,8 @@ class ToolLoopService {
     String? workingDirectory,
     void Function(String toolName, Map<String, dynamic> input)? onToolCall,
     void Function(String toolName, String result)? onToolResult,
+    void Function(String delta)? onAssistantTextDelta,
+    void Function()? onAssistantMessageComplete,
   }) async {
     final updatedMessages = List<Map<String, dynamic>>.from(apiMessages)
       ..add(<String, dynamic>{"role": "user", "content": userText});
@@ -56,14 +60,22 @@ class ToolLoopService {
 
     try {
       while (true) {
-        lastResponse = await client.createMessage(
+        bool streamedTextThisIteration = false;
+        lastResponse = await client.createStreamingMessage(
           model: model,
           maxTokens: 4096,
           messages: updatedMessages,
           system: _buildSystemPrompt(workingDirectory),
           tools: _buildToolDefinitions(),
           toolChoice: "auto",
+          onTextDelta: (delta) {
+            streamedTextThisIteration = true;
+            onAssistantTextDelta?.call(delta);
+          },
         );
+        if (streamedTextThisIteration) {
+          onAssistantMessageComplete?.call();
+        }
 
         updatedMessages.add(_assistantMessageForApi(lastResponse));
 
@@ -78,6 +90,7 @@ class ToolLoopService {
                 ? _buildEmptyAssistantFallback(lastResponse)
                 : responseText,
             response: lastResponse,
+            finalResponseWasStreamed: streamedTextThisIteration,
           );
         }
 

lib/src/session/conversation_history.dart

@@ -30,6 +30,21 @@ class ConversationHistory {
     _session!.updated = DateTime.now().toUtc();
   }
 
+  void appendToLastMessage(String text) {
+    if (_session == null || _session!.messages.isEmpty || text.isEmpty) {
+      return;
+    }
+
+    final lastMessage = _session!.messages.last;
+    _session!.messages[_session!.messages.length - 1] = Message(
+      role: lastMessage.role,
+      content: "${lastMessage.content}$text",
+      timestamp: lastMessage.timestamp,
+      tokens: lastMessage.tokens,
+    );
+    _session!.updated = DateTime.now().toUtc();
+  }
+
   void removeLastMessage() {
     if (_session == null || _session!.messages.isEmpty) {
       return;

lib/ui/constants.dart

@@ -31,6 +31,11 @@ const List<SelectableAiModel> selectableAiModels = [
     group: "Recommended",
     id: "deepseek/deepseek-v3.2",
     label: "DeepSeek v3.2",
+  ),
+  SelectableAiModel(
+    group: "Recommended",
+    id: "qwen/qwen3-coder-next",
+    label: "Qwen3 Coder Next",
   )
 
 

lib/ui/pages/home_screen/page.dart

@@ -2,17 +2,17 @@ import "package:file_picker/file_picker.dart";
 import "package:provider/provider.dart";
 import "package:shadcn_flutter/shadcn_flutter.dart";
 
-import "../../src/project_store.dart";
+import "../../../src/project_store.dart";
-import "../../src/session/session_types.dart";
+import "../../../src/session/session_types.dart";
-import "../constants.dart";
+import "../../constants.dart";
-import "../providers/chat_provider.dart";
+import "../../providers/chat_provider.dart";
-import "../providers/cost_provider.dart";
+import "../../providers/cost_provider.dart";
-import "../providers/projects_provider.dart";
+import "../../providers/projects_provider.dart";
-import "../providers/session_provider.dart";
+import "../../providers/session_provider.dart";
-import "../providers/settings_provider.dart";
+import "../../providers/settings_provider.dart";
-import "../widgets/app_header.dart";
+import "../../widgets/app_header.dart";
-import "../widgets/chat_view.dart";
+import "../../widgets/chat_view.dart";
-import "../widgets/settings_sheet.dart";
+import "../../widgets/settings_sheet.dart";
 
 class NewHomeScreen extends StatefulWidget {
   const NewHomeScreen({super.key});
@@ -268,7 +268,7 @@ class _NewHomeScreenState extends State<NewHomeScreen> {
                 const Gap(16),
                 const Padding(
                   padding: EdgeInsets.symmetric(horizontal: 16),
-                  child: GarageHeader(),
+                  child: AppHeader(),
                 ),
                 Padding(
                   padding: const EdgeInsets.all(8),
@@ -332,179 +332,159 @@ class _NewHomeScreenState extends State<NewHomeScreen> {
           ),
           const VerticalDivider(),
           Expanded(
-            child: Padding(
+            child: Column(
-              padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 18),
+              children: [
-              child: Column(
+
-                children: [
+                if (selectedProject != null && sessionProvider.currentSession != null)...[
-                  Row(
+                  Padding(
-                    crossAxisAlignment: CrossAxisAlignment.start,
+                    padding: const EdgeInsets.symmetric(
-                    children: [
+                      horizontal: 16,
-                      Expanded(
+                      vertical: 12
-                        child: Column(
+                    ),
-                          crossAxisAlignment: CrossAxisAlignment.start,
+                    child: Row(
-                          children: [
+                      children: [
-                            Text(
+
-                              selectedProject?.name ?? "Choose a project",
+                        Icon(
-                              style: const TextStyle(
+                          LucideIcons.messageCircle
-                                fontSize: 24,
+                        ).iconSmall,
-                                fontWeight: FontWeight.w700,
+
-                              ),
+                        Gap(8),
-                            ),
+
-                            const Gap(6),
+                        Transform.translate(
-                            Text(
+                          offset: Offset(0, -1),
-                              sessionProvider.currentSession?.name ??
+                          child: Row(
-                                  (selectedProject == null
-                                      ? "Use the file picker to choose a working directory."
-                                      : "Start a new chat in this working directory."),
-                            ).textSmall.muted,
-                          ],
-                        ),
-                      ),
-                      const Gap(16),
-                      Column(
-                        crossAxisAlignment: CrossAxisAlignment.end,
-                        children: [
-                          OutlinedContainer(
-                            padding: const EdgeInsets.symmetric(
-                              horizontal: 12,
-                              vertical: 10,
-                            ),
-                            child: Column(
-                              crossAxisAlignment: CrossAxisAlignment.end,
-                              children: [
-                                Text("Working Directory").textSmall.muted,
-                                const Gap(4),
-                                SizedBox(
-                                  width: 280,
-                                  child: Text(
-                                    selectedWorkingDirectory ?? "Not selected",
-                                    textAlign: TextAlign.right,
-                                    overflow: TextOverflow.ellipsis,
-                                  ).textSmall,
-                                ),
-                              ],
-                            ),
-                          ),
-                          const Gap(8),
-                          Row(
-                            mainAxisSize: MainAxisSize.min,
                             children: [
-                              OutlinedContainer(
+                              Text(
-                                padding: const EdgeInsets.symmetric(
+                                selectedProject.name
-                                  horizontal: 12,
+                              ).textSmall,
-                                  vertical: 10,
+
-                                ),
+                              Padding(
-                                child: Text(
+                                padding: EdgeInsets.symmetric(horizontal: 8),
-                                  "Session cost ${costProvider.getFormattedTotalCost()}",
+                                child: Icon(
-                                ).textSmall,
+                                    LucideIcons.slash
-                              ),
+                                ).iconX2Small,
-                              const Gap(8),
-                              IconButton.ghost(
-                                onPressed: _openSettings,
-                                icon: const Icon(LucideIcons.settings2),
                               ),
+
+                              Text(
+                                  sessionProvider.currentSession!.name
+                              ).textSmall
                             ],
                           ),
-                        ],
+                        ),
-                      ),
+
-                    ],
+
-                  ),
+
-                  const Gap(20),
+                      ],
-                  Expanded(
-                    child: ClipRect(
-                      child: OutlinedContainer(
-                        child: chatProvider.messages.isEmpty
-                            ? _EmptyChatState(
-                                projectName: selectedProject?.name,
-                                hasProject: selectedProject != null,
-                              )
-                            : const ChatView(),
-                      ),
                     ),
                   ),
-                  const Gap(16),
+                  Divider(),
-                  TextField(
+                ],
-                    controller: _messageController,
+
-                    minLines: 3,
+
-                    maxLines: 6,
+                const Gap(18),
-                    enabled: !chatProvider.isLoading,
+                Expanded(
-                    placeholder: Text(
+                  child: ConstrainedBox(
-                      selectedProject == null
+                    constraints: BoxConstraints(
-                          ? "Choose a project to start chatting"
+                      maxWidth: 600
-                          : "Ask a question or type a message",
                     ),
-                    onSubmitted: chatProvider.isLoading
+                    child: Column(
-                        ? null
+                      children: [
-                        : (_) => _sendMessage(),
+                        Expanded(
-                    features: [
+                          child: ClipRect(
-                      InputFeature.below(
+                            child: chatProvider.messages.isEmpty
-                        Row(
+                                ? _EmptyChatState(
-                          children: [
+                              projectName: selectedProject?.name,
-                            IconButton.ghost(
+                              hasProject: selectedProject != null,
-                              onPressed: _pickProjectDirectory,
+                            )
-                              icon: const Icon(LucideIcons.folderSearch),
+                                : const ChatView(),
-                            ),
+                          ),
-                            const Spacer(),
+                        ),
-                            Select<String>(
+                        const Gap(16),
-                              itemBuilder: (context, item) {
+                        TextField(
-                                return Text(_modelLabel(item));
+                          controller: _messageController,
-                              },
+                          minLines: 3,
-                              popup: SelectPopup.builder(
+                          maxLines: 6,
-                                searchPlaceholder: const Text("Search models"),
+                          enabled: !chatProvider.isLoading,
-                                builder: (context, searchQuery) {
+                          placeholder: Text(
-                                  final filteredModels = searchQuery == null
+                            selectedProject == null
-                                      ? _modelGroups.entries
+                                ? "Choose a project to start chatting"
-                                      : _filteredModels(searchQuery);
+                                : "Ask a question or type a message",
-                                  return SelectItemList(
+                          ),
-                                    children: [
+                          onSubmitted: chatProvider.isLoading
-                                      for (final entry in filteredModels)
+                              ? null
-                                        SelectGroup(
+                              : (_) => _sendMessage(),
-                                          headers: [
+                          features: [
-                                            SelectLabel(child: Text(entry.key)),
+                            InputFeature.below(
-                                          ],
+                              Row(
+                                children: [
+                                  IconButton.ghost(
+                                    onPressed: _pickProjectDirectory,
+                                    icon: const Icon(LucideIcons.folderSearch),
+                                  ),
+                                  const Spacer(),
+                                  Select<String>(
+                                    itemBuilder: (context, item) {
+                                      return Text(_modelLabel(item));
+                                    },
+                                    popup: SelectPopup.builder(
+                                      searchPlaceholder: const Text("Search models"),
+                                      builder: (context, searchQuery) {
+                                        final filteredModels = searchQuery == null
+                                            ? _modelGroups.entries
+                                            : _filteredModels(searchQuery);
+                                        return SelectItemList(
                                           children: [
-                                            for (final modelId in entry.value)
+                                            for (final entry in filteredModels)
-                                              SelectItemButton(
+                                              SelectGroup(
-                                                value: modelId,
+                                                headers: [
-                                                child: Text(
+                                                  SelectLabel(child: Text(entry.key)),
-                                                  _modelLabel(modelId),
+                                                ],
-                                                ),
+                                                children: [
+                                                  for (final modelId in entry.value)
+                                                    SelectItemButton(
+                                                      value: modelId,
+                                                      child: Text(
+                                                        _modelLabel(modelId),
+                                                      ),
+                                                    ),
+                                                ],
                                               ),
                                           ],
-                                        ),
+                                        );
-                                    ],
+                                      },
-                                  );
+                                    ),
-                                },
+                                    onChanged: (value) {
-                              ),
+                                      if (value != null) {
-                              onChanged: (value) {
+                                        settingsProvider.updateModel(value);
-                                if (value != null) {
+                                      }
-                                  settingsProvider.updateModel(value);
+                                    },
-                                }
+                                    constraints: const BoxConstraints(minWidth: 220),
-                              },
+                                    value: currentModel,
-                              constraints: const BoxConstraints(minWidth: 220),
+                                    placeholder: const Text("Select a model"),
-                              value: currentModel,
+                                  ),
-                              placeholder: const Text("Select a model"),
+                                  const Gap(10),
-                            ),
+                                  Button.primary(
-                            const Gap(10),
+                                    onPressed: chatProvider.isLoading
-                            Button.primary(
+                                        ? _stopMessage
-                              onPressed: chatProvider.isLoading
+                                        : _sendMessage,
-                                  ? _stopMessage
+                                    child: chatProvider.isLoading
-                                  : _sendMessage,
+                                        ? Text(
-                              child: chatProvider.isLoading
-                                  ? Text(
                                       chatProvider.isStopping
                                           ? "Stopping..."
                                           : "Stop",
                                     )
-                                  : const Text("Send"),
+                                        : const Text("Send"),
+                                  ),
+                                ],
+                              ),
                             ),
                           ],
                         ),
-                      ),
+                      ],
-                    ],
+                    ),
                   ),
-                ],
+                )
-              ),
+              ],
             ),
           ),
         ],

lib/ui/providers/chat_provider.dart

@@ -61,6 +61,7 @@ class ChatProvider extends ChangeNotifier {
 
     try {
       _stopRequested = false;
+      bool hasStreamingAssistantMessage = false;
       _client = await OpenRouterClientFactory.create(apiKey: apiKey);
       final session = _conversationHistory!.session;
       final workingDirectory = session?.workingDirectory;
@@ -100,15 +101,31 @@ class ChatProvider extends ChangeNotifier {
           _messages = _conversationHistory!.getMessages();
           notifyListeners();
         },
+        onAssistantTextDelta: (delta) {
+          if (!hasStreamingAssistantMessage) {
+            _conversationHistory!.addMessage("assistant", "");
+            hasStreamingAssistantMessage = true;
+          }
+          _conversationHistory!.appendToLastMessage(delta);
+          _messages = _conversationHistory!.getMessages();
+          notifyListeners();
+        },
+        onAssistantMessageComplete: () {
+          hasStreamingAssistantMessage = false;
+          _messages = _conversationHistory!.getMessages();
+          notifyListeners();
+        },
       );
       _apiMessages = toolLoopResult.apiMessages;
 
       // add assistant message to visible conversation
-      _conversationHistory!.addMessage(
+      if (!toolLoopResult.finalResponseWasStreamed) {
-        "assistant",
+        _conversationHistory!.addMessage(
-        toolLoopResult.responseText,
+          "assistant",
-        tokens: toolLoopResult.response.outputTokens,
+          toolLoopResult.responseText,
-      );
+          tokens: toolLoopResult.response.outputTokens,
+        );
+      }
       _messages = _conversationHistory!.getMessages();
 
       // track cost (set to 0 for now — OpenRouter pricing varies by model)

lib/ui/widgets/app_header.dart

@@ -1,7 +1,7 @@
 import "package:shadcn_flutter/shadcn_flutter.dart";
 
-class GarageHeader extends StatelessWidget {
+class AppHeader extends StatelessWidget {
-  const GarageHeader({super.key});
+  const AppHeader({super.key});
 
   @override
   Widget build(BuildContext context) {

lib/ui/widgets/chat_view.dart

@@ -1,5 +1,5 @@
-import "package:flutter/widgets.dart";
 import "package:provider/provider.dart";
+import "package:shadcn_flutter/shadcn_flutter.dart";
 
 import "../providers/chat_provider.dart";
 import "message_bubble.dart";
@@ -13,49 +13,193 @@ class ChatView extends StatefulWidget {
 
 class _ChatViewState extends State<ChatView> {
   late ScrollController _scrollController;
+  List<String> _previousMessageContents = [];
+  bool _isUserScrolling = false;
+  DateTime? _lastScrollTime;
+  bool _showJumpToBottom = false;
+  bool _hasNewMessagesWhileScrolledAway = false;
 
   @override
   void initState() {
     super.initState();
     _scrollController = ScrollController();
+    _scrollController.addListener(_handleScroll);
   }
 
   @override
   void dispose() {
+    _scrollController.removeListener(_handleScroll);
     _scrollController.dispose();
     super.dispose();
   }
 
-  void _scrollToBottom() {
+  void _handleScroll() {
-    WidgetsBinding.instance.addPostFrameCallback((_) {
+    _lastScrollTime = DateTime.now();
-      if (_scrollController.hasClients) {
+    _isUserScrolling = true;
-        _scrollController.animateTo(
+    
-          _scrollController.position.maxScrollExtent,
+    // Update whether to show jump-to-bottom button
-          duration: const Duration(milliseconds: 300),
+    if (_scrollController.hasClients) {
-          curve: Curves.easeOut,
+      final position = _scrollController.position;
-        );
+      final isFarFromBottom = position.pixels < position.maxScrollExtent - 200;
+      if (isFarFromBottom != _showJumpToBottom) {
+        setState(() {
+          _showJumpToBottom = isFarFromBottom;
+        });
+      }
+      
+      // If user scrolls to bottom manually, clear the new messages flag
+      if (!isFarFromBottom) {
+        setState(() {
+          _hasNewMessagesWhileScrolledAway = false;
+        });
+      }
+    }
+    
+    // Check if scrolling has stopped (no scroll events for 150ms)
+    Future.delayed(const Duration(milliseconds: 150), () {
+      if (_lastScrollTime != null && 
+          DateTime.now().difference(_lastScrollTime!) >= const Duration(milliseconds: 150)) {
+        if (mounted) {
+          setState(() {
+            _isUserScrolling = false;
+          });
+        }
       }
     });
   }
 
+  bool _isNearBottom() {
+    if (!_scrollController.hasClients) return false;
+    
+    final position = _scrollController.position;
+    // Consider user to be "near bottom" if they're within 150 pixels of the bottom
+    // Add a small buffer so we don't trigger on exact bottom
+    return position.pixels >= position.maxScrollExtent - 150;
+  }
+
+  void _jumpToBottom() {
+    if (_scrollController.hasClients) {
+      _scrollController.animateTo(
+        _scrollController.position.maxScrollExtent,
+        duration: const Duration(milliseconds: 300),
+        curve: Curves.easeOut,
+      );
+      setState(() {
+        _showJumpToBottom = false;
+        _hasNewMessagesWhileScrolledAway = false;
+      });
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Consumer<ChatProvider>(
       builder: (context, chatProvider, _) {
-        // scroll to bottom when new messages arrive
+        // Get current messages
-        if (chatProvider.messages.isNotEmpty) {
+        final currentMessages = chatProvider.messages;
-          _scrollToBottom();
+        
+        // Check if messages have actually changed (not just re-renders)
+        bool messagesChanged = false;
+        
+        if (currentMessages.length != _previousMessageContents.length) {
+          messagesChanged = true;
+        } else {
+          for (int i = 0; i < currentMessages.length; i++) {
+            if (i >= _previousMessageContents.length || 
+                currentMessages[i].content != _previousMessageContents[i]) {
+              messagesChanged = true;
+              break;
+            }
+          }
+        }
+        
+        if (messagesChanged && currentMessages.isNotEmpty) {
+          // Check if we're near the bottom
+          final nearBottom = _isNearBottom();
+          
+          if (nearBottom && !_isUserScrolling) {
+            // Auto-scroll to bottom if user is near bottom and not scrolling
+            WidgetsBinding.instance.addPostFrameCallback((_) {
+              if (_scrollController.hasClients) {
+                _scrollController.animateTo(
+                  _scrollController.position.maxScrollExtent,
+                  duration: const Duration(milliseconds: 300),
+                  curve: Curves.easeOut,
+                );
+              }
+            });
+            _hasNewMessagesWhileScrolledAway = false;
+          } else if (!nearBottom) {
+            // User is scrolled away from bottom when new messages arrive
+            _hasNewMessagesWhileScrolledAway = true;
+          }
         }
 
-        return ListView.builder(
+        // Update previous message state for next build
-          controller: _scrollController,
+        WidgetsBinding.instance.addPostFrameCallback((_) {
-          itemCount: chatProvider.messages.length,
+          _previousMessageContents = currentMessages.map((m) => m.content).toList();
-          itemBuilder: (context, index) {
+        });
-            final message = chatProvider.messages[index];
+
-            return MessageBubble(message: message);
+        return Stack(
-          },
+          children: [
+            ListView.builder(
+              controller: _scrollController,
+              itemCount: currentMessages.length,
+              itemBuilder: (context, index) {
+                final message = currentMessages[index];
+                return Padding(
+                  padding: EdgeInsetsGeometry.only(
+                    top: index != 0 ? 12 : 0
+                  ),
+                  child: MessageBubble(message: message)
+                );
+              },
+            ),
+            if (_showJumpToBottom && _hasNewMessagesWhileScrolledAway)
+              Positioned(
+                bottom: 16,
+                right: 16,
+                child: GestureDetector(
+                  onTap: _jumpToBottom,
+                  child: AnimatedContainer(
+                    duration: const Duration(milliseconds: 200),
+                    padding: const EdgeInsets.all(12),
+                    decoration: BoxDecoration(
+                      color: Theme.of(context).colorScheme.background.withOpacity(0.9),
+                      borderRadius: BorderRadius.circular(24),
+                      boxShadow: [
+                        BoxShadow(
+                          color: const Color(0xFF000000).withOpacity(0.1),
+                          blurRadius: 8,
+                          offset: const Offset(0, 2),
+                        ),
+                      ],
+                    ),
+                    child: Row(
+                      mainAxisSize: MainAxisSize.min,
+                      children: [
+                        Icon(
+                          LucideIcons.arrowDown,
+                          size: 16,
+                          color: Theme.of(context).colorScheme.foreground,
+                        ),
+                        const SizedBox(width: 6),
+                        Text(
+                          "New messages",
+                          style: TextStyle(
+                            fontSize: 12,
+                            fontWeight: FontWeight.w500,
+                            color: Theme.of(context).colorScheme.foreground,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                ),
+              ),
+          ],
         );
       },
     );
   }
-}
+}

lib/ui/widgets/cost_badge.dart

@@ -1,33 +0,0 @@
-import "package:provider/provider.dart";
-import "package:shadcn_flutter/shadcn_flutter.dart";
-
-import "../providers/cost_provider.dart";
-
-class CostBadge extends StatelessWidget {
-  const CostBadge();
-
-  @override
-  Widget build(BuildContext context) {
-    return Consumer<CostProvider>(
-      builder: (context, costProvider, _) {
-        final costStr = costProvider.getFormattedTotalCost();
-
-        return Container(
-          padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
-          decoration: BoxDecoration(
-            color: const Color(0xFFF1F5F9),
-            borderRadius: BorderRadius.circular(4),
-          ),
-          child: Text(
-            costStr,
-            style: const TextStyle(
-              fontSize: 12,
-              fontWeight: FontWeight.w600,
-              color: Color(0xFF475569),
-            ),
-          ),
-        );
-      },
-    );
-  }
-}

lib/ui/widgets/input_bar.dart

@@ -1,82 +0,0 @@
-import "package:provider/provider.dart";
-import "package:shadcn_flutter/shadcn_flutter.dart";
-
-import "../providers/chat_provider.dart";
-
-class InputBar extends StatefulWidget {
-  const InputBar({super.key});
-
-  @override
-  State<InputBar> createState() => _InputBarState();
-}
-
-class _InputBarState extends State<InputBar> {
-  late TextEditingController _controller;
-
-  @override
-  void initState() {
-    super.initState();
-    _controller = TextEditingController();
-  }
-
-  @override
-  void dispose() {
-    _controller.dispose();
-    super.dispose();
-  }
-
-  void _send(ChatProvider provider) {
-    final text = _controller.text.trim();
-    if (text.isEmpty) return;
-    provider.sendMessage(text);
-    _controller.clear();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Consumer<ChatProvider>(
-      builder: (context, chatProvider, _) {
-        return Container(
-          padding: const EdgeInsets.all(14),
-          decoration: const BoxDecoration(
-            border: Border(
-              top: BorderSide(color: Color(0xFFE2E8F0)),
-            ),
-          ),
-          child: Row(
-            crossAxisAlignment: CrossAxisAlignment.end,
-            children: [
-
-              Expanded(
-                child: TextField(
-                  controller: _controller,
-                  minLines: 1,
-                  maxLines: 4,
-                  placeholder: const Text("Type a message..."),
-                  enabled: !chatProvider.isLoading,
-                  onSubmitted: chatProvider.isLoading ? null : (_) => _send(chatProvider),
-                ),
-              ),
-
-              const SizedBox(width: 10),
-
-              chatProvider.isLoading
-                  ? const Padding(
-                      padding: EdgeInsets.symmetric(horizontal: 8, vertical: 4),
-                      child: SizedBox(
-                        width: 22,
-                        height: 22,
-                        child: CircularProgressIndicator(value: null),
-                      ),
-                    )
-                  : PrimaryButton(
-                      onPressed: () => _send(chatProvider),
-                      child: const Text("Send"),
-                    ),
-            ],
-          ),
-        );
-      },
-    );
-  }
-}

lib/ui/widgets/message_bubble.dart

@@ -1,4 +1,4 @@
-import "package:flutter/material.dart" as material hide Card;
+import "package:flutter/src/material/theme_data.dart";
 import "package:flutter_markdown/flutter_markdown.dart";
 import "package:shadcn_flutter/shadcn_flutter.dart";
 
@@ -14,47 +14,95 @@ class MessageBubble extends StatelessWidget {
     final isUser = message.role == "user";
     final isTool = message.role == "tool";
     final isAssistant = message.role == "assistant";
-    final accentColor = isTool
+
-        ? const Color(0xFF64748B)
+    final theme = Theme.of(context);
-        : const Color(0xFF94A3B8);
+
+
+    if (isUser) {
+      return Row(
+        children: [
+          Spacer(),
+          OutlinedContainer(
+            padding: EdgeInsets.symmetric(
+              horizontal: 12,
+              vertical: 8,
+            ),
+            backgroundColor: theme.colorScheme.border,
+            child: MarkdownBody(
+              data: message.content,
+              selectable: true,
+              shrinkWrap: true,
+              styleSheet: _toolMarkdownStyleSheet(context),
+            ),
+          ),
+        ],
+      );
+    } else if (isAssistant) {
+      return MarkdownBody(
+        data: message.content,
+        selectable: true,
+        shrinkWrap: true,
+        styleSheet: _toolMarkdownStyleSheet(context),
+      );
+    } else if (isTool) {
+
+      final lines = message.content.split("\n");
+      final title = lines.first.trim();
+
+      return Row(
+        children: [
+
+          Container(
+            height: 10,
+            width: 10,
+            decoration: BoxDecoration(
+              color: Colors.green,
+              shape: BoxShape.circle
+            ),
+          ),
+
+          Gap(8),
+
+          Text(
+            title,
+            style: theme.typography.p.copyWith(
+              fontSize: 13
+            ),
+          ),
+        ],
+      );
+    }
 
     return Align(
       alignment: isUser ? Alignment.centerRight : Alignment.centerLeft,
       child: Container(
-        constraints: BoxConstraints(
+        child: Padding(
-          maxWidth: material.MediaQuery.of(context).size.width * 0.7,
+          padding: const EdgeInsets.all(12),
-        ),
+          child: Column(
-        margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+            crossAxisAlignment: CrossAxisAlignment.start,
-        child: Card(
+            children: [
-          child: Padding(
+              Text(
-            padding: const EdgeInsets.all(12),
+                message.role,
-            child: material.Column(
+                style: TextStyle(
-              crossAxisAlignment: CrossAxisAlignment.start,
+                  fontSize: 12,
-              children: [
+                  fontWeight: FontWeight.w600,
-                Text(
-                  message.role,
-                  style: TextStyle(
-                    fontSize: 12,
-                    fontWeight: FontWeight.w600,
-                    color: accentColor,
-                  ),
                 ),
-                const SizedBox(height: 4),
+              ),
-                if (isAssistant || isTool)
+              const SizedBox(height: 4),
-                  MarkdownBody(
+              if (isAssistant || isTool)
-                    data: isTool
+                MarkdownBody(
-                        ? _buildToolMarkdown(message.content)
+                  data: isTool
-                        : message.content,
+                      ? _buildToolMarkdown(message.content)
-                    selectable: true,
+                      : message.content,
-                    shrinkWrap: true,
+                  selectable: true,
-                    styleSheet: isTool
+                  shrinkWrap: true,
-                        ? _toolMarkdownStyleSheet(context)
+                  styleSheet: isTool
-                        : null,
+                      ? _toolMarkdownStyleSheet(context)
-                  )
+                      : null,
-                else
+                )
-                  Text(message.content),
+              else
-              ],
+                Text(message.content),
-            ),
+            ],
           ),
         ),
       ),
@@ -78,16 +126,9 @@ class MessageBubble extends StatelessWidget {
 
   MarkdownStyleSheet _toolMarkdownStyleSheet(BuildContext context) {
     final theme = Theme.of(context);
-    return MarkdownStyleSheet.fromTheme(material.Theme.of(context)).copyWith(
+    return MarkdownStyleSheet(
-      p: theme.typography.base.copyWith(height: 1.35),
+      p: theme.typography.p.copyWith(
-      codeblockDecoration: BoxDecoration(
+        fontSize: 13
-        color: theme.colorScheme.muted.withValues(alpha: 0.35),
-        borderRadius: BorderRadius.circular(10),
-      ),
-      codeblockPadding: const EdgeInsets.all(12),
-      code: theme.typography.base.copyWith(
-        fontFamily: "monospace",
-        height: 1.35,
       ),
     );
   }

lib/ui/widgets/sidebar.dart

@@ -1,97 +0,0 @@
-import "package:provider/provider.dart";
-import "package:shadcn_flutter/shadcn_flutter.dart";
-
-import "../providers/chat_provider.dart";
-import "../providers/session_provider.dart";
-
-class Sidebar extends StatelessWidget {
-  const Sidebar();
-
-  @override
-  Widget build(BuildContext context) {
-    return Consumer<SessionProvider>(
-      builder: (context, sessionProvider, _) {
-        return Column(
-          children: [
-            // sessions list
-            Expanded(
-              child: ListView.builder(
-                itemCount: sessionProvider.sessions.length,
-                itemBuilder: (context, index) {
-                  final session = sessionProvider.sessions[index];
-                  final isSelected =
-                      sessionProvider.currentSessionId == session.id;
-
-                  return GestureDetector(
-                    onTap: () async {
-                      await sessionProvider.loadSession(session.id);
-                      if (context.mounted) {
-                        final chatProvider =
-                            Provider.of<ChatProvider>(context, listen: false);
-                        chatProvider.setConversation(
-                          sessionProvider.getConversationHistory(),
-                        );
-                      }
-                    },
-                    child: Container(
-                      padding: const EdgeInsets.symmetric(
-                        horizontal: 12,
-                        vertical: 8,
-                      ),
-                      decoration: BoxDecoration(
-                        color: isSelected
-                            ? const Color(0xFFEFF6FF)
-                            : Colors.transparent,
-                        borderRadius: BorderRadius.circular(4),
-                      ),
-                      child: Column(
-                        crossAxisAlignment: CrossAxisAlignment.start,
-                        children: [
-                          Text(
-                            session.name,
-                            maxLines: 1,
-                            overflow: TextOverflow.ellipsis,
-                            style: TextStyle(
-                              fontWeight: isSelected
-                                  ? FontWeight.w600
-                                  : FontWeight.w400,
-                            ),
-                          ),
-                          Text(
-                            "${session.messageCount} msgs",
-                            style: const TextStyle(
-                              fontSize: 12,
-                              color: Color(0xFF94A3B8),
-                            ),
-                          ),
-                        ],
-                      ),
-                    ),
-                  );
-                },
-              ),
-            ),
-
-            // new session button
-            Padding(
-              padding: const EdgeInsets.all(12),
-              child: PrimaryButton(
-                onPressed: () async {
-                  await sessionProvider.createNewSession();
-                  if (context.mounted) {
-                    final chatProvider =
-                        Provider.of<ChatProvider>(context, listen: false);
-                    chatProvider.setConversation(
-                      sessionProvider.getConversationHistory(),
-                    );
-                  }
-                },
-                child: const Text("+ New"),
-              ),
-            ),
-          ],
-        );
-      },
-    );
-  }
-}