Chat refactoring

2026-02-21 15:05:56 +00:00
parent fda5ea147a
commit af803236c8
25 changed files with 732 additions and 713 deletions
@@ -0,0 +1,46 @@
+## Authentication
+
+src/apps/officer-web/Screens/Authentication/ForgotPassword/useResetPassword.ts
+src/apps/officer-web/Screens/Authentication/VerifyScreen/useVerifyScreen.ts
+
+## Files
+
+src/apps/officer-web/Screens/Dashboard/Files/state/usePinnedFiles.ts
+src/apps/officer-web/Screens/Dashboard/Files/state/useRecentFiles.ts
+
+## Officer-web State
+
+src/apps/officer-web/state/useChatGroups.ts
+src/apps/officer-web/state/useChatSessions.ts
+src/apps/officer-web/state/useInitialData.ts
+src/apps/officer-web/state/useLandingPage.ts
+src/apps/officer-web/state/useModels.ts
+src/apps/officer-web/state/usePlans.ts
+src/apps/officer-web/state/useProjectsState.ts
+src/apps/officer-web/state/useRecentModels.ts
+src/apps/officer-web/state/useResources.ts
+src/apps/officer-web/state/useServerSettings.ts
+src/apps/officer-web/state/useSettings.ts
+src/apps/officer-web/state/useThemeSync.ts
+src/apps/officer-web/state/useUserState.ts
+src/apps/officer-web/state/useWorkspacesState.ts
+
+## Chat (apps/Chat)
+
+src/workspaces/apps/Chat/useChatSessions.ts
+src/workspaces/apps/Chat/useChatSession.ts
+src/workspaces/apps/Chat/usePi.ts
+src/workspaces/apps/Chat/useSlashCommands.ts
+
+## Other Workspaces
+
+src/workspaces/apps/CodeEditor/useEditorState.ts
+src/workspaces/apps/FileBrowser/useFiles.ts
+src/workspaces/apps/FileBrowser/useTasks.ts
+src/workspaces/components/DataTable/useFixedHeightPagination.ts
+src/workspaces/components/ui/hooks/use-mobile.tsx
+src/workspaces/components/ui/hooks/use-toast.ts
+src/workspaces/components/ui/use-toast.ts
+src/workspaces/i18n/src/useTranslation.ts
+src/workspaces/injector/use-client.ts
+Done!
@@ -10,8 +10,7 @@ import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription } f
 import { useClient } from 'hooks/useClient';
 import { useVisiblePiModels } from '@/state/useModels';
 import { Card } from '@/components/Card';
-import { usePi } from '@/Screens/Dashboard/Chat/usePi';
-import { EmbeddableChat } from '@/Screens/Dashboard/Chat/EmbeddableChat';
+import { usePi, EmbeddableChat } from 'apps/Chat';
 type CapabilitySummary = {
  dirName: string;
  name: string;
@@ -1,35 +1,28 @@
 import { useRef, useEffect, useState } from 'react';
 import { useNavigate, useLocation } from 'react-router';
 import { useChatSessions } from '@/state/useChatSessions';
-import { useSlashCommands } from '@/state/useSlashCommands';
 import { SessionBar } from 'apps/ChatHistory';
-import type { ModelOption } from '@/state/useModels';
-import type { usePi } from './usePi';
-import { EmbeddableChat, type Attachment } from './EmbeddableChat';
+import { EmbeddableChat, type UsePiType, type Attachment } from 'apps/Chat';
 import { Card } from '@/components/Card';

 export type { Attachment };

 type ChatPanelProps = {
-  chat: ReturnType<typeof usePi>;
-  availableModels?: ModelOption[];
+  chat: UsePiType;
 };

-export const ChatPanel = ({ chat, availableModels = [] }: ChatPanelProps) => {
+export const ChatPanel = ({ chat }: ChatPanelProps) => {
  const { isConnected, isGenerating, sessionId, setSelectedModel, sendPrompt } = chat;

  const location = useLocation();
  const navigate = useNavigate();
-  const [commandFeedback, setCommandFeedback] = useState<string | null>(null);
  const [fullscreen, setFullscreen] = useState(false);
-  const initialSentRef = useRef(false);

  const { sessions, deleteSession } = useChatSessions();
-  const slashCommands = useSlashCommands({ sessionId });
  const sessionTitle = sessionId ? sessions.find((s) => s.id === sessionId)?.title : undefined;
  const listPath = '/chat';

-  // Capture prefill input from location.state (one-time, before first render completes)
+  // Capture initial state from navigation
  const locationState = location.state as {
    initialMessage?: string;
    prefillInput?: string;
@@ -38,42 +31,30 @@ export const ChatPanel = ({ chat, availableModels = [] }: ChatPanelProps) => {
    attachmentIds?: string[];
    images?: { filename: string; dataUrl: string }[];
  } | null;
-  const initialPrefill = useRef(locationState?.prefillInput ?? '');
-
-  const handleBeforeSend = async (text: string) => {
-    if (text.startsWith('/')) {
-      const result = await slashCommands.execute(text);
-      if (result.handled) {
-        setCommandFeedback(result.feedback);
-        return true;
+  
+  const initialMessage = locationState?.initialMessage
+    ? {
+        text: locationState.initialMessage,
+        attachmentIds: locationState.attachmentIds,
+        images: locationState.images,
+        cwd: locationState.cwd,
      }
-    }
-    setCommandFeedback(null);
-    return false;
-  };
+    : undefined;
+  
+  const defaultInput = locationState?.prefillInput ?? '';
+  const initialModel = locationState?.model ?? null;

-  // Auto-send initial message from Home launcher
+  // Clear location state after capturing
  useEffect(() => {
-    const state = location.state as typeof locationState;
-    if (!state || initialSentRef.current) return;
-    if (state.prefillInput) {
-      initialSentRef.current = true;
+    if (locationState) {
      window.history.replaceState({}, '', location.pathname);
-      return;
    }
-    if (!state.initialMessage || !isConnected) return;
-    initialSentRef.current = true;
-    if (state.model) setSelectedModel(state.model);
-    sendPrompt(state.initialMessage, state.attachmentIds, state.images, state.cwd);
-    // Clear the location state so refresh doesn't re-send
-    window.history.replaceState({}, '', location.pathname);
-  }, [isConnected, location.state]);
+  }, []);

  return (
    <Card
-      className={`flex flex-col overflow-hidden transition-all duration-200 rounded-none border-0 md:rounded-xl md:border-2 ${
-        fullscreen ? 'fixed inset-0 m-auto z-50 w-[90vw] h-[calc(90vh-4.5rem)]' : 'h-full'
-      }`}
+      className={`flex flex-col overflow-hidden transition-all duration-200 rounded-none border-0 md:rounded-xl md:border-2 ${fullscreen ? 'fixed inset-0 m-auto z-50 w-[90vw] h-[calc(90vh-4.5rem)]' : 'h-full'
+        }`}
    >
      <SessionBar
        listPath={listPath}
@@ -90,11 +71,10 @@ export const ChatPanel = ({ chat, availableModels = [] }: ChatPanelProps) => {
      />

      <EmbeddableChat
-        chat={chat}
-        availableModels={availableModels}
-        onBeforeSend={handleBeforeSend}
-        commandFeedback={commandFeedback}
-        defaultInput={initialPrefill.current}
+        sessionId={sessionId ?? undefined}
+        initialModel={initialModel}
+        initialMessage={initialMessage}
+        defaultInput={defaultInput}
        className="flex-1 min-h-0"
      />
    </Card>
@@ -1,110 +0,0 @@
-import { useMemo, useState } from 'react';
-import { Check, ChevronsUpDown } from 'lucide-react';
-import { Button } from '@/components/ui/button';
-import { Command, CommandEmpty, CommandGroup, CommandInput, CommandItem, CommandList } from '@/components/ui/command';
-import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/popover';
-import type { ModelOption } from '@/state/useModels';
-import { useRecentModels } from '@/state/useRecentModels';
-
-type OpenCodeModelPickerProps = {
-  models: ModelOption[];
-  selectedModel: string | null;
-  onSelect: (modelId: string) => void;
-  isConnected: boolean;
-  isGenerating: boolean;
-};
-
-export const OpenCodeModelPicker = ({
-  models,
-  selectedModel,
-  onSelect,
-  isConnected,
-  isGenerating,
-}: OpenCodeModelPickerProps) => {
-  const [open, setOpen] = useState(false);
-  const { recents, addRecent } = useRecentModels();
-
-  const selected = models.find((m) => m.id === selectedModel);
-
-  const groupedByProvider = useMemo(() => {
-    const groups: Record<string, ModelOption[]> = {};
-    for (const m of models) {
-      const provider = m.provider ?? 'Other';
-      if (!groups[provider]) groups[provider] = [];
-      groups[provider].push(m);
-    }
-    return Object.entries(groups)
-      .sort(([a], [b]) => a.localeCompare(b))
-      .map(([provider, items]) => ({
-        provider,
-        models: items.sort((a, b) => a.name.localeCompare(b.name)),
-      }));
-  }, [models]);
-
-  const handleSelect = (modelId: string) => {
-    const model = models.find((m) => m.id === modelId);
-    if (model) {
-      onSelect(model.id);
-      addRecent(model);
-    }
-    setOpen(false);
-  };
-
-  return (
-    <Popover open={open} onOpenChange={setOpen}>
-      <PopoverTrigger asChild>
-        <Button
-          variant="ghost"
-          role="combobox"
-          aria-expanded={open}
-          disabled={isGenerating || !isConnected}
-          className="h-auto border-0 bg-transparent p-0 text-xs text-duck-dark/50 shadow-none focus:ring-0 gap-1 cursor-pointer hover:bg-transparent hover:text-duck-dark/70"
-        >
-          {selected ? (
-            <>
-              {selected.name}
-              {selected.provider && <span className="hidden md:inline"> ({selected.provider})</span>}
-            </>
-          ) : (
-            'select model'
-          )}
-          <ChevronsUpDown className="h-3 w-3 shrink-0 opacity-50" />
-        </Button>
-      </PopoverTrigger>
-      <PopoverContent className="z-[800] w-[320px] p-0" align="end" side="top">
-        <Command>
-          <CommandInput placeholder="Search models..." />
-          <CommandList className="max-h-[400px]">
-            <CommandEmpty>No models found.</CommandEmpty>
-            {recents.length > 0 && (
-              <CommandGroup heading="Recent">
-                {recents.map((m) => (
-                  <CommandItem
-                    key={`recent-${m.id}`}
-                    value={`${m.name} ${m.provider ?? ''}`}
-                    onSelect={() => handleSelect(m.id)}
-                  >
-                    <Check className={`mr-2 h-4 w-4 ${selectedModel === m.id ? 'opacity-100' : 'opacity-0'}`} />
-                    <span className="truncate font-bold">{m.name}</span>
-                    {m.provider && <span className="ml-1 text-xs text-muted-foreground">({m.provider})</span>}
-                  </CommandItem>
-                ))}
-              </CommandGroup>
-            )}
-            {groupedByProvider.map(({ provider, models: providerModels }) => (
-              <CommandGroup key={provider} heading={provider}>
-                {providerModels.map((m) => (
-                  <CommandItem key={m.id} value={`${m.name} ${m.provider ?? ''}`} onSelect={() => handleSelect(m.id)}>
-                    <Check className={`mr-2 h-4 w-4 ${selectedModel === m.id ? 'opacity-100' : 'opacity-0'}`} />
-                    <span className="truncate font-bold">{m.name}</span>
-                    {m.provider && <span className="ml-1 text-xs text-muted-foreground">({m.provider})</span>}
-                  </CommandItem>
-                ))}
-              </CommandGroup>
-            ))}
-          </CommandList>
-        </Command>
-      </PopoverContent>
-    </Popover>
-  );
-};
@@ -1,6 +1,3 @@
 export { ChatPanel } from './ChatPanel';
-export { EmbeddableChat, type Attachment } from './EmbeddableChat';
-export { InputArea } from './InputArea';
-export { Settings } from './Settings';
-export { usePi } from './usePi';
-export { ChatList } from './ChatList';
+export { EmbeddableChat, usePi, ChatList } from 'apps/Chat';
+export type { Attachment } from 'apps/Chat';
@@ -1,11 +1,9 @@
-import { useEffect, useRef } from 'react';
+import { useEffect } from 'react';
 import { useLocation } from 'react-router';
 import { Trash2 } from 'lucide-react';
 import { usePanelChannel } from 'hooks/usePanelChannel';
 import { useChatSessions } from '@/state/useChatSessions';
-import { useVisiblePiModels } from '@/state/useModels';
-import { usePi } from '@/Screens/Dashboard/Chat/usePi';
-import { EmbeddableChat } from '@/Screens/Dashboard/Chat/EmbeddableChat';
+import { usePi, EmbeddableChat } from 'apps/Chat';

 export type SelectedSession = {
  id: string;
@@ -66,12 +64,14 @@ type SessionChatProps = {
 };

 function SessionChat({ sessionId, model }: SessionChatProps) {
-  const chat = usePi(sessionId, model, { replaceUrl: false });
-  const models = useVisiblePiModels();
  const { sessions, deleteSession } = useChatSessions();
  const [, setSelected] = usePanelChannel<SelectedSession>(CHANNEL, null);
  const sessionTitle = sessions.find((s) => s.id === sessionId)?.title;

+  // We need connection status for the DetailBar, so we still call usePi here
+  // TODO: Consider moving DetailBar into EmbeddableChat or exposing status from it
+  const chat = usePi(sessionId, model, { replaceUrl: false });
+
  return (
    <div className="flex flex-col h-full">
      <DetailBar
@@ -84,7 +84,11 @@ function SessionChat({ sessionId, model }: SessionChatProps) {
          window.history.replaceState(null, '', '/chat');
        }}
      />
-      <EmbeddableChat chat={chat} availableModels={models} className="flex-1 min-h-0" />
+      <EmbeddableChat 
+        sessionId={sessionId}
+        initialModel={model ?? undefined}
+        className="flex-1 min-h-0" 
+      />
    </div>
  );
 }
@@ -92,30 +96,25 @@ function SessionChat({ sessionId, model }: SessionChatProps) {
 function NewChat() {
  const location = useLocation();
  const locationState = location.state as ChatLocationState;
-  const initialSentRef = useRef(false);
-  const chat = usePi();
-  const models = useVisiblePiModels();
  const [, setSelected] = usePanelChannel<SelectedSession>(CHANNEL, null);

+  // We need connection status for DetailBar, so call usePi
+  const chat = usePi();
+
  useEffect(() => {
    if (chat.sessionId) {
      setSelected({ id: chat.sessionId, model: chat.model });
    }
  }, [chat.sessionId]);

-  useEffect(() => {
-    if (!locationState || initialSentRef.current || !chat.isConnected) return;
-    if (locationState.prefillInput) {
-      initialSentRef.current = true;
-      window.history.replaceState({}, '', location.pathname);
-      return;
-    }
-    if (!locationState.initialMessage) return;
-    initialSentRef.current = true;
-    if (locationState.model) chat.setSelectedModel(locationState.model);
-    chat.sendPrompt(locationState.initialMessage, locationState.attachmentIds, locationState.images, locationState.cwd);
-    window.history.replaceState({}, '', location.pathname);
-  }, [chat.isConnected, location.state]);
+  const initialMessage = locationState?.initialMessage
+    ? {
+        text: locationState.initialMessage,
+        attachmentIds: locationState.attachmentIds,
+        images: locationState.images,
+        cwd: locationState.cwd,
+      }
+    : undefined;

  return (
    <div className="flex flex-col h-full">
@@ -126,8 +125,9 @@ function NewChat() {
        onDelete={undefined}
      />
      <EmbeddableChat
-        chat={chat}
-        availableModels={models}
+        sessionId={undefined}
+        initialModel={locationState?.model ?? undefined}
+        initialMessage={initialMessage}
        defaultInput={locationState?.prefillInput ?? ''}
        cwd={locationState?.cwd}
        className="flex-1 min-h-0"
@@ -4,8 +4,7 @@ import { Dialog, DialogOverlay, DialogPortal } from '@/components/ui/dialog';
 import * as DialogPrimitive from '@radix-ui/react-dialog';
 import { cardStyle } from '@/components/Card';
 import type { TaskInfo } from 'apps/Chat';
-import { usePi } from '@/Screens/Dashboard/Chat/usePi';
-import { EmbeddableChat } from '@/Screens/Dashboard/Chat/EmbeddableChat';
+import { usePi, EmbeddableChat } from 'apps/Chat';
 import { useVisiblePiModels } from '@/state/useModels';
 import { useSettings } from '@/state/useSettings';
 import type { TaskSummary } from 'apps/FileBrowser';
@@ -1,357 +1,44 @@
-import { useState, useMemo, useRef, useEffect, type KeyboardEvent } from 'react';
+import { useEffect, useState } from 'react';
 import { useNavigate } from 'react-router';
-import {
-  Send,
-  ChevronDown,
-  Check,
-  Paperclip,
-  Link as LinkIcon,
-  Loader2,
-  X,
-  FileText,
-  Image,
-} from 'lucide-react';
-import { toast } from 'sonner';
-import { useClient } from 'hooks/useClient';
-import { Button } from '@/components/ui/button';
 import { Widget } from 'widgets/Widget';
-import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription } from '@/components/ui/dialog';
-import {
-  DropdownMenu,
-  DropdownMenuContent,
-  DropdownMenuItem,
-  DropdownMenuTrigger,
-} from '@/components/ui/dropdown-menu';
 import { useSettings } from '@/state/useSettings';
-import { useVisiblePiModels, type ModelOption } from '@/state/useModels';
-import type { Attachment } from '@/Screens/Dashboard/Chat/EmbeddableChat';
-
-const PROVIDER_DISPLAY: Record<string, string> = {
-  anthropic: 'Anthropic',
-  openai: 'OpenAI',
-  opencode: 'OpenCode Zen',
-  google: 'Google',
-  groq: 'Groq',
-  mistral: 'Mistral',
-  xai: 'xAI',
-  openrouter: 'OpenRouter',
-  huggingface: 'Hugging Face',
-  'github-copilot': 'GitHub Copilot',
-  minimax: 'MiniMax',
-  bedrock: 'Amazon Bedrock',
-  'google-vertex': 'Google Vertex AI',
-  'azure-openai': 'Azure OpenAI',
-};
+import { useVisiblePiModels } from '@/state/useModels';
+import { ChatLauncher as ChatLauncherComponent } from 'apps/Chat';

 export const ChatLauncher = () => {
  const navigate = useNavigate();
  const { settings } = useSettings();
  const piModels = useVisiblePiModels();
-
-  const client = useClient();
  const [model, setModel] = useState<string | null>(settings.chat.defaultModel);
-  const [input, setInput] = useState('');
-  const [attachments, setAttachments] = useState<Attachment[]>([]);
-  const [urlDialogOpen, setUrlDialogOpen] = useState(false);
-  const [urlInput, setUrlInput] = useState('');
-  const textareaRef = useRef<HTMLTextAreaElement | null>(null);
-  const imageInputRef = useRef<HTMLInputElement>(null);

  useEffect(() => {
    setModel(settings.chat.defaultModel);
  }, [settings.chat.defaultModel]);

-  const providers = useMemo(
-    () => [...new Set(piModels.map((m: ModelOption) => m.provider).filter(Boolean))] as string[],
-    [piModels],
-  );
-
-  const activeProvider = piModels.find((m: ModelOption) => m.id === model)?.provider ?? providers[0];
-  const providerModels = piModels.filter((m: ModelOption) => m.provider === activeProvider);
-
-  const displayName = (provider: string) => PROVIDER_DISPLAY[provider] ?? provider;
-
-  const handleProviderClick = (provider: string) => {
-    const firstModel = piModels.find((m: ModelOption) => m.provider === provider);
-    if (firstModel) setModel(firstModel.id);
-  };
-
-  const handleAttachWebpage = async (url: string) => {
-    const idx = attachments.length;
-    setAttachments((prev) => [
-      ...prev,
-      { type: 'webpage', url, title: '', content: '', attachmentId: '', loading: true },
-    ]);
-
-    try {
-      const res = await client.post<{ url: string; title: string; content: string; attachmentId: string }>('/scrape', {
-        url,
-        provider: 'pi-mono',
-      });
-      setAttachments((prev) =>
-        prev.map((a, i) =>
-          i === idx
-            ? { ...a, title: res.title, content: res.content, attachmentId: res.attachmentId, loading: false }
-            : a,
-        ),
-      );
-    } catch {
-      setAttachments((prev) => prev.filter((_, i) => i !== idx));
-      toast.error('Failed to scrape webpage');
-    }
-  };
-
-  const handleAttachImage = async (file: File) => {
-    const idx = attachments.length;
-    setAttachments((prev) => [
-      ...prev,
-      { type: 'image', filename: file.name, dataUrl: '', attachmentId: '', loading: true },
-    ]);
-
-    try {
-      const formData = new FormData();
-      formData.append('file', file);
-      formData.append('provider', 'pi-mono');
-
-      const res = await client.post<{ filename: string; dataUrl: string; attachmentId: string }>('/upload', formData);
-      setAttachments((prev) =>
-        prev.map((a, i) =>
-          i === idx ? { ...a, dataUrl: res.dataUrl, attachmentId: res.attachmentId, loading: false } : a,
-        ),
-      );
-    } catch {
-      setAttachments((prev) => prev.filter((_, i) => i !== idx));
-      toast.error('Failed to upload image');
-    }
-  };
-
-  const handleUrlSubmit = () => {
-    const url = urlInput.trim();
-    if (!url) return;
-    handleAttachWebpage(url);
-    setUrlInput('');
-    setUrlDialogOpen(false);
-  };
-
-  const handleSubmit = () => {
-    const text = input.trim();
-    if (!text) return;
-
-    let prompt = text;
-    const attachmentIds: string[] = [];
-    const images: { filename: string; dataUrl: string }[] = [];
-    for (const a of attachments) {
-      if (a.loading) continue;
-      if (a.type === 'webpage' && a.content) {
-        prompt = `[Attached webpage: ${a.url}]\n${a.content}\n\n${prompt}`;
-      } else if (a.type === 'image' && a.dataUrl) {
-        prompt = `[Attached image: ${a.filename}]\n\n${prompt}`;
-        images.push({ filename: a.filename, dataUrl: a.dataUrl });
-      }
-      attachmentIds.push(a.attachmentId);
-    }
-
+  const handleSubmit = (data: {
+    prompt: string;
+    model: string | null;
+    attachmentIds?: string[];
+    images?: { filename: string; dataUrl: string }[];
+  }) => {
    navigate('/chat/new', {
      state: {
-        initialMessage: prompt,
-        model,
-        attachmentIds: attachmentIds.length > 0 ? attachmentIds : undefined,
-        images: images.length > 0 ? images : undefined,
+        initialMessage: data.prompt,
+        model: data.model,
+        attachmentIds: data.attachmentIds,
+        images: data.images,
      },
    });
  };

-  const handleKeyDown = (ev: KeyboardEvent<HTMLTextAreaElement>) => {
-    if (ev.key === 'Enter' && !ev.shiftKey) {
-      ev.preventDefault();
-      handleSubmit();
-    }
-  };
-
-  useEffect(() => {
-    const textarea = textareaRef.current;
-    if (!textarea) return;
-    textarea.style.height = 'auto';
-    textarea.style.height = Math.min(textarea.scrollHeight, 160) + 'px';
-  }, [input]);
-
  return (
-    <>
-      <Widget title="Start Chat">
-        <div className="p-4 pb-2 pt-1">
-          {attachments.length > 0 && (
-            <div className="mb-2 flex flex-wrap gap-1.5">
-              {attachments.map((a, i) => (
-                <span
-                  key={i}
-                  className="relative inline-flex items-center gap-1 px-2 py-1 text-xs bg-duck-teal/10 text-duck-teal rounded-md max-w-[240px] group"
-                >
-                  {a.loading ? (
-                    <Loader2 className="h-3 w-3 shrink-0 animate-spin" />
-                  ) : a.type === 'image' && a.dataUrl ? (
-                    <img src={a.dataUrl} alt={a.filename} className="h-8 w-8 shrink-0 rounded object-cover" />
-                  ) : a.type === 'image' ? (
-                    <Image className="h-3 w-3 shrink-0" />
-                  ) : (
-                    <LinkIcon className="h-3 w-3 shrink-0" />
-                  )}
-                  <span className="truncate">
-                    {a.type === 'image' ? a.filename : a.loading ? a.url : a.title || a.url}
-                  </span>
-                  <button
-                    type="button"
-                    onClick={() => setAttachments((prev) => prev.filter((_, j) => j !== i))}
-                    className="shrink-0 hover:text-duck-dark cursor-pointer"
-                  >
-                    <X className="h-3 w-3" />
-                  </button>
-                </span>
-              ))}
-            </div>
-          )}
-          <div className="flex items-end gap-2">
-            <DropdownMenu>
-              <DropdownMenuTrigger asChild>
-                <button
-                  type="button"
-                  className="shrink-0 h-10 w-10 flex items-center justify-center rounded-lg text-duck-dark/40 hover:text-duck-dark/70 hover:bg-duck-dark/5 transition-colors cursor-pointer"
-                >
-                  <Paperclip className="h-4 w-4" />
-                </button>
-              </DropdownMenuTrigger>
-              <DropdownMenuContent side="top" align="start" className="z-[600]">
-                <DropdownMenuItem className="cursor-pointer" onSelect={() => imageInputRef.current?.click()}>
-                  <Image className="mr-2 h-4 w-4" />
-                  Image
-                </DropdownMenuItem>
-                <DropdownMenuItem className="cursor-pointer">
-                  <FileText className="mr-2 h-4 w-4" />
-                  Text File
-                </DropdownMenuItem>
-                <DropdownMenuItem className="cursor-pointer">
-                  <FileText className="mr-2 h-4 w-4" />
-                  PDF
-                </DropdownMenuItem>
-                <DropdownMenuItem className="cursor-pointer" onSelect={() => setUrlDialogOpen(true)}>
-                  <LinkIcon className="mr-2 h-4 w-4" />
-                  Webpage URL
-                </DropdownMenuItem>
-              </DropdownMenuContent>
-            </DropdownMenu>
-            <input
-              ref={imageInputRef}
-              type="file"
-              accept="image/*"
-              className="hidden"
-              onChange={(ev) => {
-                const file = ev.target.files?.[0];
-                if (file) handleAttachImage(file);
-                ev.target.value = '';
-              }}
-            />
-            <textarea
-              ref={textareaRef}
-              value={input}
-              onChange={(ev) => setInput(ev.target.value)}
-              onKeyDown={handleKeyDown}
-              onPaste={(ev) => {
-                const items = ev.clipboardData?.items;
-                if (!items) return;
-                for (const item of Array.from(items)) {
-                  if (item.type.startsWith('image/')) {
-                    ev.preventDefault();
-                    const file = item.getAsFile();
-                    if (file) handleAttachImage(file);
-                    return;
-                  }
-                }
-              }}
-              placeholder="What do you want to work on now?"
-              rows={1}
-              className="flex-1 resize-none bg-transparent px-2 py-2 text-duck-dark placeholder:text-duck-dark/30 focus:outline-none text-lg"
-            />
-            <Button
-              onClick={handleSubmit}
-              disabled={!input.trim()}
-              size="icon"
-              className="shrink-0 h-10 w-10 bg-duck-teal hover:bg-duck-teal/90 cursor-pointer disabled:opacity-40"
-            >
-              <Send className="h-4 w-4" />
-            </Button>
-          </div>
-        </div>
-
-        <div className="flex items-center justify-between px-4 pb-3">
-          <div className="flex items-center gap-1 rounded-lg bg-duck-dark/5 p-1">
-            {providers.map((provider) => (
-              <button
-                key={provider}
-                onClick={() => handleProviderClick(provider)}
-                className={`rounded-md px-3 py-1 text-xs font-medium transition-colors cursor-pointer ${
-                  activeProvider === provider
-                    ? 'bg-background text-duck-dark shadow-sm'
-                    : 'text-duck-dark/50 hover:text-duck-dark/70'
-                }`}
-              >
-                {displayName(provider)}
-              </button>
-            ))}
-          </div>
-
-          {providerModels.length > 0 && (
-            <DropdownMenu>
-              <DropdownMenuTrigger asChild>
-                <button className="flex items-center gap-1 text-xs text-duck-dark/50 hover:text-duck-dark/70 cursor-pointer transition-colors">
-                  {providerModels.find((m) => m.id === (model ?? providerModels[0]?.id))?.name ?? providerModels[0]?.name}
-                  <ChevronDown className="h-3 w-3" />
-                </button>
-              </DropdownMenuTrigger>
-              <DropdownMenuContent align="end" className="z-[600] max-h-64 overflow-y-auto">
-                {providerModels.map((m) => (
-                  <DropdownMenuItem key={m.id} onClick={() => setModel(m.id)} className="cursor-pointer">
-                    <Check
-                      className={`mr-2 h-3 w-3 ${(model ?? providerModels[0]?.id) === m.id ? 'opacity-100' : 'opacity-0'}`}
-                    />
-                    <span className="font-bold">{m.name}</span>
-                  </DropdownMenuItem>
-                ))}
-              </DropdownMenuContent>
-            </DropdownMenu>
-          )}
-        </div>
-      </Widget>
-
-      <Dialog open={urlDialogOpen} onOpenChange={setUrlDialogOpen}>
-        <DialogContent className="sm:max-w-md z-[700]">
-          <DialogHeader>
-            <DialogTitle>Attach Webpage</DialogTitle>
-            <DialogDescription>Enter a URL to scrape and attach as context.</DialogDescription>
-          </DialogHeader>
-          <div className="flex gap-2">
-            <input
-              type="url"
-              value={urlInput}
-              onChange={(ev) => setUrlInput(ev.target.value)}
-              onKeyDown={(ev) => {
-                if (ev.key === 'Enter') {
-                  ev.preventDefault();
-                  handleUrlSubmit();
-                }
-              }}
-              placeholder="https://example.com"
-              className="flex-1 rounded-lg border border-duck-dark/20 bg-background px-3 py-2 text-sm text-duck-dark placeholder:text-duck-dark/30 focus:outline-none focus:ring-2 focus:ring-duck-teal/30 focus:border-duck-teal/50"
-              autoFocus
-            />
-            <Button
-              onClick={handleUrlSubmit}
-              disabled={!urlInput.trim()}
-              className="bg-duck-teal hover:bg-duck-teal/90 cursor-pointer disabled:opacity-40"
-            >
-              Attach
-            </Button>
-          </div>
-        </DialogContent>
-      </Dialog>
-    </>
+    <Widget title="Start Chat">
+      <ChatLauncherComponent
+        availableModels={piModels}
+        selectedModel={model}
+        onModelChange={setModel}
+        onSubmit={handleSubmit}
+      />
+    </Widget>
  );
 };
@@ -9,7 +9,7 @@ import { TerminalView } from 'apps/Terminal';
 import { useWorkspacesState } from '@/state/useWorkspacesState';
 import { usePanelChannel } from 'hooks/usePanelChannel';
 import { FileViewerProvider, FileViewerHeader, FileViewerBody } from 'apps/FileViewer';
-import { usePi } from '../Chat/usePi';
+import { usePi } from 'apps/Chat';
 import { ChatPanel } from '../Chat/ChatPanel';
 import { useVisiblePiModels } from '@/state/useModels';
 import { ChatHistoryApp as ChatHistory } from '../ChatHistory';
@@ -1,31 +0,0 @@
-import { useChatSessions } from '@/state/useChatSessions';
-
-export type SlashCommandResult = { handled: true; feedback: string } | { handled: false };
-
-type UseSlashCommandsParams = {
-  sessionId: string | null;
-};
-
-export const useSlashCommands = ({ sessionId }: UseSlashCommandsParams) => {
-  const { renameSession } = useChatSessions();
-
-  const execute = async (input: string): Promise<SlashCommandResult> => {
-    const trimmed = input.trim();
-    if (!trimmed.startsWith('/')) return { handled: false };
-
-    const spaceIndex = trimmed.indexOf(' ');
-    const command = spaceIndex === -1 ? trimmed.slice(1) : trimmed.slice(1, spaceIndex);
-    const args = spaceIndex === -1 ? '' : trimmed.slice(spaceIndex + 1).trim();
-
-    switch (command) {
-      case 'rename':
-        if (!sessionId || !args) return { handled: false };
-        await renameSession(sessionId, args);
-        return { handled: true, feedback: `Session renamed to "${args}"` };
-      default:
-        return { handled: false };
-    }
-  };
-
-  return { execute };
-};
@@ -0,0 +1,64 @@
+import { useRef } from 'react';
+import { Paperclip, Image, Link, FileText } from 'lucide-react';
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+} from '@/components/ui/dropdown-menu';
+
+type AttachButtonProps = {
+  onAttachImage: (file: File) => void;
+  onAttachWebpage: () => void;
+  size?: 'sm' | 'md';
+};
+
+export function AttachButton({ onAttachImage, onAttachWebpage, size = 'sm' }: AttachButtonProps) {
+  const imageInputRef = useRef<HTMLInputElement>(null);
+
+  const sizeClasses = size === 'md' ? 'h-10 w-10' : 'h-7 w-7 md:h-9 md:w-9';
+
+  return (
+    <>
+      <DropdownMenu>
+        <DropdownMenuTrigger asChild>
+          <button
+            type="button"
+            className={`shrink-0 ${sizeClasses} flex items-center justify-center rounded-lg text-duck-dark/40 hover:text-duck-dark/70 hover:bg-duck-dark/5 transition-colors cursor-pointer`}
+          >
+            <Paperclip className="h-4 w-4" />
+          </button>
+        </DropdownMenuTrigger>
+        <DropdownMenuContent side="top" align="start" className="z-[800]">
+          <DropdownMenuItem className="cursor-pointer" onSelect={() => imageInputRef.current?.click()}>
+            <Image className="mr-2 h-4 w-4" />
+            Image
+          </DropdownMenuItem>
+          <DropdownMenuItem className="cursor-pointer">
+            <FileText className="mr-2 h-4 w-4" />
+            Text File
+          </DropdownMenuItem>
+          <DropdownMenuItem className="cursor-pointer">
+            <FileText className="mr-2 h-4 w-4" />
+            PDF
+          </DropdownMenuItem>
+          <DropdownMenuItem className="cursor-pointer" onSelect={onAttachWebpage}>
+            <Link className="mr-2 h-4 w-4" />
+            Webpage URL
+          </DropdownMenuItem>
+        </DropdownMenuContent>
+      </DropdownMenu>
+      <input
+        ref={imageInputRef}
+        type="file"
+        accept="image/*"
+        className="hidden"
+        onChange={(ev) => {
+          const file = ev.target.files?.[0];
+          if (file) onAttachImage(file);
+          ev.target.value = '';
+        }}
+      />
+    </>
+  );
+}
@@ -0,0 +1,42 @@
+import { Loader2, Image, Link, X } from 'lucide-react';
+import type { Attachment } from './types';
+
+type AttachmentListProps = {
+  attachments: Attachment[];
+  onRemove: (index: number) => void;
+};
+
+export function AttachmentList({ attachments, onRemove }: AttachmentListProps) {
+  if (attachments.length === 0) return null;
+
+  return (
+    <div className="mb-2 flex flex-wrap gap-1.5">
+      {attachments.map((a, i) => (
+        <span
+          key={i}
+          className="relative inline-flex items-center gap-1 px-2 py-1 text-xs bg-duck-teal/10 text-duck-teal rounded-md max-w-[240px] group"
+        >
+          {a.loading ? (
+            <Loader2 className="h-3 w-3 shrink-0 animate-spin" />
+          ) : a.type === 'image' && a.dataUrl ? (
+            <img src={a.dataUrl} alt={a.filename} className="h-8 w-8 shrink-0 rounded object-cover" />
+          ) : a.type === 'image' ? (
+            <Image className="h-3 w-3 shrink-0" />
+          ) : (
+            <Link className="h-3 w-3 shrink-0" />
+          )}
+          <span className="truncate">
+            {a.type === 'image' ? a.filename : a.loading ? 'Loading...' : a.title}
+          </span>
+          <button
+            type="button"
+            onClick={() => onRemove(i)}
+            className="shrink-0 hover:text-duck-dark cursor-pointer"
+          >
+            <X className="h-3 w-3" />
+          </button>
+        </span>
+      ))}
+    </div>
+  );
+}
@@ -0,0 +1,195 @@
+import { useState, useMemo, useRef, useEffect, type KeyboardEvent } from 'react';
+import { Send } from 'lucide-react';
+import { toast } from 'sonner';
+import { useClient } from 'hooks/useClient';
+import { Button } from '@/components/ui/button';
+import type { ModelOption, Attachment } from './types';
+import { ModelSelector } from './ModelSelector';
+import { AttachmentList } from './AttachmentList';
+import { AttachButton } from './AttachButton';
+import { WebpageDialog } from './WebpageDialog';
+
+type ChatLauncherProps = {
+  availableModels: ModelOption[];
+  selectedModel: string | null;
+  onModelChange: (modelId: string) => void;
+  onSubmit: (data: {
+    prompt: string;
+    model: string | null;
+    attachmentIds?: string[];
+    images?: { filename: string; dataUrl: string }[];
+  }) => void;
+  placeholder?: string;
+};
+
+export function ChatLauncher({
+  availableModels,
+  selectedModel,
+  onModelChange,
+  onSubmit,
+  placeholder = 'What do you want to work on now?',
+}: ChatLauncherProps) {
+  const client = useClient();
+  const [input, setInput] = useState('');
+  const [attachments, setAttachments] = useState<Attachment[]>([]);
+  const [urlDialogOpen, setUrlDialogOpen] = useState(false);
+  const textareaRef = useRef<HTMLTextAreaElement | null>(null);
+
+  const handleAttachWebpage = async (url: string) => {
+    const idx = attachments.length;
+    setAttachments((prev) => [
+      ...prev,
+      { type: 'webpage', url, title: '', content: '', attachmentId: '', loading: true },
+    ]);
+
+    try {
+      const res = await client.post<{ url: string; title: string; content: string; attachmentId: string }>('/scrape', {
+        url,
+        provider: 'pi-mono',
+      });
+      setAttachments((prev) =>
+        prev.map((a, i) =>
+          i === idx
+            ? { ...a, title: res.title, content: res.content, attachmentId: res.attachmentId, loading: false }
+            : a,
+        ),
+      );
+    } catch {
+      setAttachments((prev) => prev.filter((_, i) => i !== idx));
+      toast.error('Failed to scrape webpage');
+    }
+  };
+
+  const handleAttachImage = async (file: File) => {
+    const idx = attachments.length;
+    setAttachments((prev) => [
+      ...prev,
+      { type: 'image', filename: file.name, dataUrl: '', attachmentId: '', loading: true },
+    ]);
+
+    try {
+      const formData = new FormData();
+      formData.append('file', file);
+      formData.append('provider', 'pi-mono');
+
+      const res = await client.post<{ filename: string; dataUrl: string; attachmentId: string }>('/upload', formData);
+      setAttachments((prev) =>
+        prev.map((a, i) =>
+          i === idx ? { ...a, dataUrl: res.dataUrl, attachmentId: res.attachmentId, loading: false } : a,
+        ),
+      );
+    } catch {
+      setAttachments((prev) => prev.filter((_, i) => i !== idx));
+      toast.error('Failed to upload image');
+    }
+  };
+
+  const handleSubmit = () => {
+    const text = input.trim();
+    if (!text) return;
+
+    let prompt = text;
+    const attachmentIds: string[] = [];
+    const images: { filename: string; dataUrl: string }[] = [];
+
+    for (const a of attachments) {
+      if (a.loading) continue;
+      if (a.type === 'webpage' && a.content) {
+        prompt = `[Attached webpage: ${a.url}]\n${a.content}\n\n${prompt}`;
+      } else if (a.type === 'image' && a.dataUrl) {
+        prompt = `[Attached image: ${a.filename}]\n\n${prompt}`;
+        images.push({ filename: a.filename, dataUrl: a.dataUrl });
+      }
+      attachmentIds.push(a.attachmentId);
+    }
+
+    onSubmit({
+      prompt,
+      model: selectedModel,
+      attachmentIds: attachmentIds.length > 0 ? attachmentIds : undefined,
+      images: images.length > 0 ? images : undefined,
+    });
+
+    // Reset form
+    setInput('');
+    setAttachments([]);
+  };
+
+  const handleKeyDown = (ev: KeyboardEvent<HTMLTextAreaElement>) => {
+    if (ev.key === 'Enter' && !ev.shiftKey) {
+      ev.preventDefault();
+      handleSubmit();
+    }
+  };
+
+  const handleImagePaste = (file: File) => {
+    handleAttachImage(file);
+  };
+
+  // Auto-resize textarea
+  useEffect(() => {
+    const textarea = textareaRef.current;
+    if (!textarea) return;
+    textarea.style.height = 'auto';
+    textarea.style.height = Math.min(textarea.scrollHeight, 160) + 'px';
+  }, [input]);
+
+  return (
+    <div className="p-4 pb-2 pt-1">
+      <AttachmentList attachments={attachments} onRemove={(i) => setAttachments((prev) => prev.filter((_, j) => j !== i))} />
+
+      <div className="flex items-end gap-2">
+        <AttachButton
+          size="md"
+          onAttachImage={handleAttachImage}
+          onAttachWebpage={() => setUrlDialogOpen(true)}
+        />
+        <textarea
+          ref={textareaRef}
+          value={input}
+          onChange={(ev) => setInput(ev.target.value)}
+          onKeyDown={handleKeyDown}
+          onPaste={(ev) => {
+            const items = ev.clipboardData?.items;
+            if (!items) return;
+            for (const item of Array.from(items)) {
+              if (item.type.startsWith('image/')) {
+                ev.preventDefault();
+                const file = item.getAsFile();
+                if (file) handleImagePaste(file);
+                return;
+              }
+            }
+          }}
+          placeholder={placeholder}
+          rows={1}
+          className="flex-1 resize-none bg-transparent px-2 py-2 text-duck-dark placeholder:text-duck-dark/30 focus:outline-none text-lg"
+        />
+        <Button
+          onClick={handleSubmit}
+          disabled={!input.trim()}
+          size="icon"
+          className="shrink-0 h-10 w-10 bg-duck-teal hover:bg-duck-teal/90 cursor-pointer disabled:opacity-40"
+        >
+          <Send className="h-4 w-4" />
+        </Button>
+      </div>
+
+      <ModelSelector
+        messages={[]}
+        availableModels={availableModels}
+        selectedModel={selectedModel}
+        onModelChange={onModelChange}
+        model={selectedModel}
+        isConnected={true}
+        isGenerating={false}
+      />
+
+      <WebpageDialog
+        open={urlDialogOpen}
+        onOpenChange={setUrlDialogOpen}
+        onSubmit={handleAttachWebpage}
+      />
+    </div>
+  );
+}
@@ -2,20 +2,22 @@ import type { KeyboardEvent } from 'react';
 import { useRef, useEffect, useState } from 'react';
 import { toast } from 'sonner';
 import { useClient } from 'hooks/useClient';
-import type { ModelOption } from '@/state/useModels';
-import type { usePi } from './usePi';
-import { MessageList } from 'apps/Chat';
+import { useVisiblePiModels } from '@/state/useModels';
+import { usePi } from './usePi';
+import { MessageList } from './MessageList';
 import { InputArea } from './InputArea';
-
-export type Attachment =
-  | { type: 'webpage'; url: string; title: string; content: string; attachmentId: string; loading?: boolean }
-  | { type: 'image'; filename: string; dataUrl: string; attachmentId: string; loading?: boolean };
+import type { Attachment } from './types';
+import { useSlashCommands } from './useSlashCommands';

 type EmbeddableChatProps = {
-  chat: ReturnType<typeof usePi>;
-  availableModels?: ModelOption[];
-  onBeforeSend?: (text: string) => boolean | Promise<boolean>;
-  commandFeedback?: string | null;
+  sessionId?: string;
+  initialModel?: string | null;
+  initialMessage?: {
+    text: string;
+    attachmentIds?: string[];
+    images?: { filename: string; dataUrl: string }[];
+    cwd?: { root?: string; path: string };
+  };
  defaultInput?: string;
  promptPrefix?: string;
  className?: string;
@@ -24,16 +26,17 @@ type EmbeddableChatProps = {
 };

 export const EmbeddableChat = ({
-  chat,
-  availableModels = [],
-  onBeforeSend,
-  commandFeedback = null,
+  sessionId: initialSessionId,
+  initialModel,
+  initialMessage,
  defaultInput = '',
  promptPrefix,
  className,
  cwd,
  autoSend = false,
 }: EmbeddableChatProps) => {
+  const chat = usePi(initialSessionId, initialModel);
+  const availableModels = useVisiblePiModels();
  const {
    messages,
    streamingText,
@@ -51,11 +54,14 @@ export const EmbeddableChat = ({
  const [input, setInput] = useState(defaultInput);
  const [attachments, setAttachments] = useState<Attachment[]>([]);
  const [showJumpToBottom, setShowJumpToBottom] = useState(false);
+  const [commandFeedback, setCommandFeedback] = useState<string | null>(null);
  const textareaRef = useRef<HTMLTextAreaElement | null>(null);
  const scrollViewportRef = useRef<HTMLDivElement | null>(null);
  const bottomRef = useRef<HTMLDivElement | null>(null);
  const userScrolledRef = useRef(false);

+  const slashCommandHandler = useSlashCommands({ sessionId });
+
  const handleAttachWebpage = async (url: string) => {
    const idx = attachments.length;
    setAttachments((prev) => [
@@ -115,14 +121,17 @@ export const EmbeddableChat = ({
    const text = input.trim();
    if (!text || isGenerating) return;

-    if (onBeforeSend) {
-      const handled = await onBeforeSend(text);
-      if (handled) {
+    // Handle slash commands
+    if (text.startsWith('/')) {
+      const result = await slashCommandHandler.execute(text);
+      if (result.handled) {
+        setCommandFeedback(result.feedback);
        setInput('');
        if (textareaRef.current) textareaRef.current.style.height = 'auto';
        return;
      }
    }
+    setCommandFeedback(null);

    // Prepend metadata/attachment content to the prompt
    let prompt = promptPrefix ? `${promptPrefix}\n\n${text}` : text;
@@ -203,6 +212,21 @@ export const EmbeddableChat = ({
    textareaRef.current?.focus();
  }, []);

+  // Auto-send initial message when provided
+  const initialSentRef = useRef(false);
+  useEffect(() => {
+    if (initialMessage && isConnected && !initialSentRef.current) {
+      initialSentRef.current = true;
+      if (initialModel) setSelectedModel(initialModel);
+      sendPrompt(
+        initialMessage.text,
+        initialMessage.attachmentIds,
+        initialMessage.images,
+        initialMessage.cwd,
+      );
+    }
+  }, [initialMessage, isConnected]);
+
  // Auto-send first message when autoSend is enabled
  const autoSentRef = useRef(false);
  useEffect(() => {
@@ -1,19 +1,14 @@
 import type { KeyboardEvent, RefObject } from 'react';
 import { useState, useRef } from 'react';
-import { FileText, Image, Link, Loader2, Mic, Paperclip, Send, Square, X } from 'lucide-react';
+import { Loader2, Mic, Send, Square } from 'lucide-react';
 import { toast } from 'sonner';
 import { Button } from '@/components/ui/button';
-import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription } from '@/components/ui/dialog';
-import {
-  DropdownMenu,
-  DropdownMenuContent,
-  DropdownMenuItem,
-  DropdownMenuTrigger,
-} from '@/components/ui/dropdown-menu';
 import type { ModelOption } from '@/state/useModels';
-import type { ChatMessage } from 'apps/Chat';
-import type { Attachment } from './EmbeddableChat';
-import { Settings } from './Settings';
+import type { ChatMessage, Attachment } from './types';
+import { ModelSelector } from './ModelSelector';
+import { AttachmentList } from './AttachmentList';
+import { AttachButton } from './AttachButton';
+import { WebpageDialog } from './WebpageDialog';

 const blobToWav = async (blob: Blob): Promise<Blob> => {
  const ctx = new AudioContext();
@@ -93,21 +88,11 @@ export const InputArea = ({
  onRemoveAttachment,
 }: InputAreaProps) => {
  const [urlDialogOpen, setUrlDialogOpen] = useState(false);
-  const [urlInput, setUrlInput] = useState('');
  const [recording, setRecording] = useState(false);
  const [transcribing, setTranscribing] = useState(false);
-  const imageInputRef = useRef<HTMLInputElement>(null);
  const mediaRecorderRef = useRef<MediaRecorder | null>(null);
  const chunksRef = useRef<Blob[]>([]);

-  const handleUrlSubmit = () => {
-    const url = urlInput.trim();
-    if (!url) return;
-    onAttachWebpage(url);
-    setUrlInput('');
-    setUrlDialogOpen(false);
-  };
-
  const handleMicClick = async () => {
    if (recording) {
      const recorder = mediaRecorderRef.current;
@@ -187,64 +172,13 @@ export const InputArea = ({
        <div className="mb-2 px-3 py-1.5 text-xs text-duck-teal bg-duck-teal/10 rounded-md">{commandFeedback}</div>
      )}

-      {attachments.length > 0 && (
-        <div className="mb-2 flex flex-wrap gap-1.5">
-          {attachments.map((a, i) => (
-            <span
-              key={i}
-              className="relative inline-flex items-center gap-1 px-2 py-1 text-xs bg-duck-teal/10 text-duck-teal rounded-md max-w-[240px] group"
-            >
-              {a.loading ? (
-                <Loader2 className="h-3 w-3 shrink-0 animate-spin" />
-              ) : a.type === 'image' && a.dataUrl ? (
-                <img src={a.dataUrl} alt={a.filename} className="h-8 w-8 shrink-0 rounded object-cover" />
-              ) : a.type === 'image' ? (
-                <Image className="h-3 w-3 shrink-0" />
-              ) : (
-                <Link className="h-3 w-3 shrink-0" />
-              )}
-              <span className="truncate">{a.type === 'image' ? a.filename : a.loading ? a.url : a.title || a.url}</span>
-              <button
-                type="button"
-                onClick={() => onRemoveAttachment(i)}
-                className="shrink-0 hover:text-duck-dark cursor-pointer"
-              >
-                <X className="h-3 w-3" />
-              </button>
-            </span>
-          ))}
-        </div>
-      )}
+      <AttachmentList attachments={attachments} onRemove={onRemoveAttachment} />

      <div className="flex items-end gap-1 md:gap-2">
-        <DropdownMenu>
-          <DropdownMenuTrigger asChild>
-            <button
-              type="button"
-              className="shrink-0 h-7 w-7 md:h-9 md:w-9 flex items-center justify-center rounded-lg text-duck-dark/40 hover:text-duck-dark/70 hover:bg-duck-dark/5 transition-colors cursor-pointer"
-            >
-              <Paperclip className="h-4 w-4" />
-            </button>
-          </DropdownMenuTrigger>
-          <DropdownMenuContent side="top" align="start" className="z-[800]">
-            <DropdownMenuItem className="cursor-pointer" onSelect={() => imageInputRef.current?.click()}>
-              <Image className="mr-2 h-4 w-4" />
-              Image
-            </DropdownMenuItem>
-            <DropdownMenuItem className="cursor-pointer">
-              <FileText className="mr-2 h-4 w-4" />
-              Text File
-            </DropdownMenuItem>
-            <DropdownMenuItem className="cursor-pointer">
-              <FileText className="mr-2 h-4 w-4" />
-              PDF
-            </DropdownMenuItem>
-            <DropdownMenuItem className="cursor-pointer" onSelect={() => setUrlDialogOpen(true)}>
-              <Link className="mr-2 h-4 w-4" />
-              Webpage URL
-            </DropdownMenuItem>
-          </DropdownMenuContent>
-        </DropdownMenu>
+        <AttachButton
+          onAttachImage={onAttachImage}
+          onAttachWebpage={() => setUrlDialogOpen(true)}
+        />
        <button
          type="button"
          disabled={transcribing}
@@ -262,17 +196,7 @@ export const InputArea = ({
            <Mic className="h-4 w-4" />
          )}
        </button>
-        <input
-          ref={imageInputRef}
-          type="file"
-          accept="image/*"
-          className="hidden"
-          onChange={(ev) => {
-            const file = ev.target.files?.[0];
-            if (file) onAttachImage(file);
-            ev.target.value = '';
-          }}
-        />
+
        <textarea
          ref={textareaRef}
          value={input}
@@ -309,7 +233,7 @@ export const InputArea = ({
          </Button>
        )}
      </div>
-      <Settings
+      <ModelSelector
        messages={messages}
        availableModels={availableModels}
        selectedModel={selectedModel}
@@ -319,37 +243,11 @@ export const InputArea = ({
        isGenerating={isGenerating}
      />

-      <Dialog open={urlDialogOpen} onOpenChange={setUrlDialogOpen}>
-        <DialogContent className="sm:max-w-md z-[700]">
-          <DialogHeader>
-            <DialogTitle>Attach Webpage</DialogTitle>
-            <DialogDescription>Enter a URL to scrape and attach as context.</DialogDescription>
-          </DialogHeader>
-          <div className="flex gap-2">
-            <input
-              type="url"
-              value={urlInput}
-              onChange={(ev) => setUrlInput(ev.target.value)}
-              onKeyDown={(ev) => {
-                if (ev.key === 'Enter') {
-                  ev.preventDefault();
-                  handleUrlSubmit();
-                }
-              }}
-              placeholder="https://example.com"
-              className="flex-1 rounded-lg border border-duck-dark/20 bg-background px-3 py-2 text-sm text-duck-dark placeholder:text-duck-dark/30 focus:outline-none focus:ring-2 focus:ring-duck-teal/30 focus:border-duck-teal/50"
-              autoFocus
-            />
-            <Button
-              onClick={handleUrlSubmit}
-              disabled={!urlInput.trim()}
-              className="bg-duck-teal hover:bg-duck-teal/90 cursor-pointer disabled:opacity-40"
-            >
-              Attach
-            </Button>
-          </div>
-        </DialogContent>
-      </Dialog>
+      <WebpageDialog
+        open={urlDialogOpen}
+        onOpenChange={setUrlDialogOpen}
+        onSubmit={onAttachWebpage}
+      />
    </div>
  );
 };
@@ -3,7 +3,6 @@ import { useVirtualizer } from '@tanstack/react-virtual';
 import type { ChatMessage } from './types';
 import { MessageBubble, StreamingBubble } from './MessageBubble';

-const MESSAGE_HEIGHT = 100; // Estimated height per message bubble
 const OVERSCAN = 5;

 export const MessageList = ({
@@ -28,8 +27,9 @@ export const MessageList = ({
  const virtualizer = useVirtualizer({
    count: messages.length,
    getScrollElement: () => scrollViewportRef.current,
-    estimateSize: () => MESSAGE_HEIGHT,
+    estimateSize: () => 150, // Initial estimate, will be measured
    overscan: OVERSCAN,
+    measureElement: (element) => element.getBoundingClientRect().height,
  });

  return (
@@ -50,6 +50,8 @@ export const MessageList = ({
              return (
                <div
                  key={virtualRow.key}
+                  data-index={virtualRow.index}
+                  ref={virtualizer.measureElement}
                  className="absolute top-0 left-0 w-full px-4"
                  style={{
                    transform: `translateY(${virtualRow.start}px)`,
@@ -1,7 +1,7 @@
 import { useMemo } from 'react';
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
 import type { ModelOption } from '@/state/useModels';
-import type { ChatMessage } from 'apps/Chat';
+import type { ChatMessage } from './types';

 const PROVIDER_DISPLAY: Record<string, string> = {
  anthropic: 'Anthropic',
@@ -20,7 +20,7 @@ const PROVIDER_DISPLAY: Record<string, string> = {
  'azure-openai': 'Azure OpenAI',
 };

-type SettingsProps = {
+type ModelSelectorProps = {
  messages: ChatMessage[];
  availableModels: ModelOption[];
  selectedModel: string | null;
@@ -30,7 +30,7 @@ type SettingsProps = {
  isGenerating: boolean;
 };

-export const Settings = ({
+export function ModelSelector({
  messages,
  availableModels,
  selectedModel,
@@ -38,7 +38,7 @@ export const Settings = ({
  model,
  isConnected,
  isGenerating,
-}: SettingsProps) => {
+}: ModelSelectorProps) {
  const providers = useMemo(
    () => [...new Set(availableModels.map((m) => m.provider).filter(Boolean))] as string[],
    [availableModels],
@@ -102,4 +102,4 @@ export const Settings = ({
      </div>
    </div>
  );
-};
+}
@@ -0,0 +1,55 @@
+import { useState } from 'react';
+import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription } from '@/components/ui/dialog';
+import { Button } from '@/components/ui/button';
+
+type WebpageDialogProps = {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  onSubmit: (url: string) => void;
+};
+
+export function WebpageDialog({ open, onOpenChange, onSubmit }: WebpageDialogProps) {
+  const [urlInput, setUrlInput] = useState('');
+
+  const handleSubmit = () => {
+    const url = urlInput.trim();
+    if (!url) return;
+    onSubmit(url);
+    setUrlInput('');
+    onOpenChange(false);
+  };
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="sm:max-w-md z-[700]">
+        <DialogHeader>
+          <DialogTitle>Attach Webpage</DialogTitle>
+          <DialogDescription>Enter a URL to scrape and attach as context.</DialogDescription>
+        </DialogHeader>
+        <div className="flex gap-2">
+          <input
+            type="url"
+            value={urlInput}
+            onChange={(ev) => setUrlInput(ev.target.value)}
+            onKeyDown={(ev) => {
+              if (ev.key === 'Enter') {
+                ev.preventDefault();
+                handleSubmit();
+              }
+            }}
+            placeholder="https://example.com"
+            className="flex-1 rounded-lg border border-duck-dark/20 bg-background px-3 py-2 text-sm text-duck-dark placeholder:text-duck-dark/30 focus:outline-none focus:ring-2 focus:ring-duck-teal/30 focus:border-duck-teal/50"
+            autoFocus
+          />
+          <Button
+            onClick={handleSubmit}
+            disabled={!urlInput.trim()}
+            className="bg-duck-teal hover:bg-duck-teal/90 cursor-pointer disabled:opacity-40"
+          >
+            Attach
+          </Button>
+        </div>
+      </DialogContent>
+    </Dialog>
+  );
+}
@@ -2,17 +2,17 @@ export { MessageList } from './MessageList';
 export { MessageBubble, StreamingBubble } from './MessageBubble';
 export { ToolActivity } from './ToolActivity';
 export { QuestionActivity } from './QuestionActivity';
+export { ModelSelector } from './ModelSelector';
+export { InputArea } from './InputArea';
+export { ChatLauncher } from './ChatLauncher';
+export { AttachmentList } from './AttachmentList';
+export { AttachButton } from './AttachButton';
+export { WebpageDialog } from './WebpageDialog';
+export { EmbeddableChat } from './EmbeddableChat';
+export { usePi, type UsePiType } from './usePi';
+export { ChatList } from './ChatList';
+export { useSlashCommands } from './useSlashCommands';
+export { useChatSessions, type UseChatSessionsType } from './useChatSessions';
+export { useChatSession, type UseChatSessionType } from './useChatSession';

-export type {
-  ChatMessage,
-  SessionEntry,
-  GroupEntry,
-  ServerMessage,
-  Message,
-  MessageCost,
-  ModelOption,
-  TaskInfo,
-  LegacyChatMessage,
-  LegacySessionEntry,
-  LegacyServerMessage,
-} from './types';
+export * from './types';
@@ -1,3 +1,7 @@
+export type Attachment =
+  | { type: 'webpage'; url: string; title: string; content: string; attachmentId: string; loading?: boolean }
+  | { type: 'image'; filename: string; dataUrl: string; attachmentId: string; loading?: boolean };
+
 export type MessageCost = {
  inputTokens: number;
  outputTokens: number;
@@ -80,6 +84,12 @@ export type Message = {
  isError?: boolean;
 };

+export type SlashCommand = {
+  command: string;
+  description?: string;
+  execute: (args: string, sessionId: string) => Promise<{ success: boolean; feedback: string }>;
+};
+
 // Legacy type aliases for backward compatibility during migration
 // TODO: Remove after Phase 9 cleanup

@@ -0,0 +1,77 @@
+import type { SessionEntry, ChatMessage, Message } from './types';
+import { useClient } from 'hooks/useClient';
+import { useQuery, useQueryClient } from '@tanstack/react-query';
+
+type SessionWithMessages = {
+  id: string;
+  title: string;
+  model: string;
+  cwd: string;
+  groupSlug?: string | null;
+  createdAt: number;
+  updatedAt: number;
+  messageCount: number;
+  cost: {
+    inputTokens: number;
+    outputTokens: number;
+    totalUSD: number;
+  };
+  messages: Message[];
+};
+
+type UseChatSessionParams = {
+  sessionId: string | null | undefined;
+};
+
+export function useChatSession({ sessionId }: UseChatSessionParams) {
+  const client = useClient();
+  const queryClient = useQueryClient();
+
+  const { data: session, isLoading } = useQuery<SessionWithMessages | null>({
+    queryKey: ['PI_SESSION', sessionId],
+    enabled: !!sessionId,
+    queryFn: async () => {
+      if (!sessionId) return null;
+      const result = await client.get<{ session: SessionWithMessages }>(`/pi/sessions/${sessionId}`);
+      return result.session;
+    },
+  });
+
+  async function saveMessages(messages: ChatMessage[]) {
+    if (!sessionId) return;
+    await client.put(`/pi/sessions/${sessionId}/messages`, messages);
+  }
+
+  async function rename(title: string) {
+    if (!sessionId) return;
+    await client.patch(`/pi/sessions/${sessionId}`, { title });
+    queryClient.invalidateQueries({ queryKey: ['PI_SESSION', sessionId] });
+    queryClient.invalidateQueries({ queryKey: ['PI_SESSIONS'] });
+  }
+
+  async function deleteSession() {
+    if (!sessionId) return;
+    await client.delete(`/pi/sessions/${sessionId}`);
+    queryClient.invalidateQueries({ queryKey: ['PI_SESSIONS'] });
+    queryClient.removeQueries({ queryKey: ['PI_SESSION', sessionId] });
+  }
+
+  async function moveToGroup(groupSlug: string | null) {
+    if (!sessionId) return;
+    await client.post(`/pi/sessions/${sessionId}/move`, { groupSlug });
+    queryClient.invalidateQueries({ queryKey: ['PI_SESSION', sessionId] });
+    queryClient.invalidateQueries({ queryKey: ['PI_SESSIONS'] });
+    queryClient.invalidateQueries({ queryKey: ['PI_GROUPS'] });
+  }
+
+  return {
+    session,
+    isLoading,
+    saveMessages,
+    rename,
+    delete: deleteSession,
+    moveToGroup,
+  };
+}
+
+export type UseChatSessionType = ReturnType<typeof useChatSession>;
@@ -0,0 +1,34 @@
+import type { SessionEntry } from './types';
+import { useAuth } from 'hooks/useAuth';
+import { useClient } from 'hooks/useClient';
+import { useQuery } from '@tanstack/react-query';
+
+type UseChatSessionsParams = {
+  cwd?: string;
+};
+
+export function useChatSessions({ cwd }: UseChatSessionsParams = {}) {
+  const client = useClient();
+  const { isAuthenticated } = useAuth();
+
+  const { data: sessions = [], isLoading } = useQuery<SessionEntry[]>({
+    queryKey: ['PI_SESSIONS', cwd],
+    enabled: isAuthenticated,
+    queryFn: async () => {
+      const result = await client.post<{ sessions: SessionEntry[] }>('/pi/sessions', cwd ? { cwd } : {});
+      return result.sessions;
+    },
+  });
+
+  function searchSessions(query: string) {
+    return client.get<{ results: SessionEntry[] }>(`/pi/sessions/search?q=${encodeURIComponent(query)}`);
+  }
+
+  return {
+    sessions,
+    isLoading,
+    searchSessions,
+  };
+}
+
+export type UseChatSessionsType = ReturnType<typeof useChatSessions>;
@@ -1,7 +1,7 @@
 import { useState, useEffect, useRef } from 'react';
 import { useChatWebSocket } from 'hooks/useChatWebSocket';
 import { useChatSessions } from '@/state/useChatSessions';
-import type { ChatMessage, ServerMessage, TaskInfo, Message } from 'apps/Chat';
+import type { ChatMessage, ServerMessage, TaskInfo, Message } from './types';

 const SAVE_DEBOUNCE_MS = 1000;

@@ -283,3 +283,5 @@ export function usePi(initialSessionId?: string, initialModel?: string | null, o
    stopGeneration,
  };
 }
+
+export type UsePiType = ReturnType<typeof usePi>;
@@ -0,0 +1,49 @@
+import { useChatSession } from './useChatSession';
+
+export type SlashCommandResult = { handled: true; feedback: string } | { handled: false };
+
+type UseSlashCommandsParams = {
+  sessionId: string | null;
+};
+
+export function useSlashCommands({ sessionId }: UseSlashCommandsParams) {
+  const { rename } = useChatSession({ sessionId });
+
+  const execute = async (input: string): Promise<SlashCommandResult> => {
+    const trimmed = input.trim();
+    if (!trimmed.startsWith('/')) return { handled: false };
+    if (!sessionId) return { handled: false };
+
+    const spaceIndex = trimmed.indexOf(' ');
+    const commandName = spaceIndex === -1 ? trimmed.slice(1) : trimmed.slice(1, spaceIndex);
+    const args = spaceIndex === -1 ? '' : trimmed.slice(spaceIndex + 1).trim();
+
+    try {
+      switch (commandName) {
+        case 'rename': {
+          if (!args.trim()) {
+            return { handled: true, feedback: 'Usage: /rename <new name>' };
+          }
+          await rename(args);
+          return { handled: true, feedback: `Session renamed to "${args}"` };
+        }
+
+        case 'help': {
+          const helpText = [
+            'Available commands:',
+            '  /rename <name> - Rename the current session',
+            '  /help - Show this help message',
+          ].join('\n');
+          return { handled: true, feedback: helpText };
+        }
+
+        default:
+          return { handled: false };
+      }
+    } catch (error) {
+      return { handled: true, feedback: `Error: ${error instanceof Error ? error.message : 'Unknown error'}` };
+    }
+  };
+
+  return { execute };
+}