feat(web): multi-session grid view, composer status bar, in-chat keyboard shortcuts

web/src/App.tsx

@@ -117,7 +117,7 @@ function AppInner() {
         }
     }, [goBack, pathname])
     const queryClient = useQueryClient()
-    const sessionMatch = matchRoute({ to: '/sessions/$sessionId' })
+    const sessionMatch = matchRoute({ to: '/sessions/$sessionId', fuzzy: true })
     const selectedSessionId = sessionMatch && sessionMatch.sessionId !== 'new' ? sessionMatch.sessionId : null
     const { isSyncing, startSync, endSync } = useSyncingState()
     const [sseDisconnected, setSseDisconnected] = useState(false)
@@ -230,14 +230,30 @@ function AppInner() {
     }, [])
 
     const handleSseEvent = useCallback(() => {}, [])
+    const isGridRoute = matchRoute({ to: '/grid' })
     const handleToast = useCallback((event: ToastEvent) => {
+        // In the grid parent frame, notify GridView via CustomEvent then suppress the card
+        if (isGridRoute) {
+            window.dispatchEvent(new CustomEvent('grid-toast', { detail: { sessionId: event.data.sessionId } }))
+            return
+        }
+        // In grid view iframes, notify the parent frame and filter by session
+        const isInIframe = window.self !== window.top
+        if (isInIframe) {
+            if (event.data.sessionId && selectedSessionId && event.data.sessionId !== selectedSessionId) {
+                return
+            }
+            // Forward to parent GridView
+            window.parent.postMessage({ type: 'grid-cell-toast', sessionId: event.data.sessionId }, '*')
+            return
+        }
         addToast({
             title: event.data.title,
             body: event.data.body,
             sessionId: event.data.sessionId,
             url: event.data.url
         })
-    }, [addToast])
+    }, [addToast, selectedSessionId, isGridRoute])
 
     const eventSubscription = useMemo(() => {
         if (selectedSessionId) {

web/src/components/AssistantChat/ComposerButtons.tsx

@@ -1,6 +1,13 @@
+import { useMemo } from 'react'
 import { ComposerPrimitive } from '@assistant-ui/react'
 import type { ConversationStatus } from '@/realtime/types'
 import { useTranslation } from '@/lib/use-translation'
+import type { AgentState, PermissionMode, CodexCollaborationMode } from '@/types/api'
+import { getConnectionStatus, getContextWarning } from '@/components/AssistantChat/StatusBar'
+import { getContextBudgetTokens } from '@/chat/modelConfig'
+import {
+    getPermissionModeLabel, getPermissionModeTone, getCodexCollaborationModeLabel, isPermissionModeAllowedForFlavor
+} from '@hapi/protocol'
 
 function VoiceAssistantIcon() {
     return (
@@ -319,10 +326,52 @@ export function ComposerButtons(props: {
     onVoiceToggle: () => void
     onVoiceMicToggle?: () => void
     onSend: () => void
+    // Status bar props
+    active?: boolean
+    thinking?: boolean
+    agentState?: AgentState | null
+    backgroundTaskCount?: number
+    contextSize?: number
+    model?: string | null
+    agentFlavor?: string | null
+    permissionMode?: PermissionMode
+    collaborationMode?: CodexCollaborationMode
 }) {
     const { t } = useTranslation()
     const isVoiceConnected = props.voiceStatus === 'connected'
 
+    const connectionStatus = useMemo(
+        () => getConnectionStatus(
+            props.active ?? true,
+            props.thinking ?? false,
+            props.agentState,
+            props.voiceStatus,
+            props.backgroundTaskCount ?? 0,
+            t
+        ),
+        [props.active, props.thinking, props.agentState, props.voiceStatus, props.backgroundTaskCount, t]
+    )
+
+    const contextWarning = useMemo(() => {
+        if (props.contextSize === undefined) return null
+        const max = getContextBudgetTokens(props.model, props.agentFlavor)
+        if (!max) return null
+        return getContextWarning(props.contextSize, max, t)
+    }, [props.contextSize, props.model, props.agentFlavor, t])
+
+    const permissionToneClasses: Record<string, string> = {
+        neutral: 'text-[var(--app-hint)]', info: 'text-blue-500', warning: 'text-amber-500', danger: 'text-red-500'
+    }
+    const displayPermissionMode = props.permissionMode
+        && isPermissionModeAllowedForFlavor(props.permissionMode, props.agentFlavor)
+        ? props.permissionMode : null
+    const permissionLabel = displayPermissionMode ? getPermissionModeLabel(displayPermissionMode) : null
+    const permissionColor = displayPermissionMode && displayPermissionMode !== 'default'
+        ? (permissionToneClasses[getPermissionModeTone(displayPermissionMode)] ?? 'text-[var(--app-hint)]')
+        : 'text-[var(--app-hint)]'
+    const collaborationLabel = props.agentFlavor === 'codex' && props.collaborationMode === 'plan'
+        ? getCodexCollaborationModeLabel(props.collaborationMode) : null
+
     return (
         <div className="flex items-center justify-between px-2 pb-2">
             <div className="flex items-center gap-1">
@@ -404,6 +453,25 @@ export function ComposerButtons(props: {
                 ) : null}
             </div>
 
+            {/* Status area: left=dot+status+context, right=mode labels */}
+            <div className="flex items-center justify-between mx-2 min-w-0 flex-1">
+                <div className="flex items-center gap-1 min-w-0">
+                    <span className={`h-1.5 w-1.5 rounded-full flex-shrink-0 ${connectionStatus.dotColor} ${connectionStatus.isPulsing ? 'animate-pulse' : ''}`} />
+                    <span className={`text-[10px] leading-none truncate ${connectionStatus.color}`}>{connectionStatus.text}</span>
+                    {contextWarning ? (
+                        <span className={`text-[10px] leading-none whitespace-nowrap flex-shrink-0 ${contextWarning.color}`}>· {contextWarning.text}</span>
+                    ) : null}
+                </div>
+                <div className="flex items-center gap-1.5 flex-shrink-0 ml-2">
+                    {collaborationLabel ? (
+                        <span className="text-[10px] leading-none text-blue-500">{collaborationLabel}</span>
+                    ) : null}
+                    {permissionLabel ? (
+                        <span className={`text-[10px] leading-none ${permissionColor}`}>{permissionLabel}</span>
+                    ) : null}
+                </div>
+            </div>
+
             <UnifiedButton
                 canSend={props.canSend}
                 voiceStatus={props.voiceStatus}

web/src/components/AssistantChat/HappyComposer.tsx

@@ -25,7 +25,6 @@ import { markSkillUsed } from '@/lib/recent-skills'
 import { useComposerDraft } from '@/hooks/useComposerDraft'
 import { FloatingOverlay } from '@/components/ChatInput/FloatingOverlay'
 import { Autocomplete } from '@/components/ChatInput/Autocomplete'
-import { StatusBar } from '@/components/AssistantChat/StatusBar'
 import { ComposerButtons } from '@/components/AssistantChat/ComposerButtons'
 import { AttachmentItem } from '@/components/AssistantChat/AttachmentItem'
 import { useTranslation } from '@/lib/use-translation'
@@ -400,7 +399,11 @@ export function HappyComposer(props: {
             end: e.target.selectionEnd
         }
         setInputState({ text: e.target.value, selection })
-    }, [])
+        // Notify parent GridView to clear notification dot when user starts typing
+        if (window.self !== window.top && sessionId) {
+            window.parent.postMessage({ type: 'grid-cell-typing', sessionId }, '*')
+        }
+    }, [sessionId])
 
     const handleSelect = useCallback((e: ReactSyntheticEvent<HTMLTextAreaElement>) => {
         const target = e.target as HTMLTextAreaElement
@@ -754,19 +757,6 @@ export function HappyComposer(props: {
                 <ComposerPrimitive.Root className="relative" onSubmit={handleSubmit}>
                     {overlays}
 
-                    <StatusBar
-                        active={active}
-                        thinking={thinking}
-                        agentState={agentState}
-                        backgroundTaskCount={backgroundTaskCount}
-                        contextSize={contextSize}
-                        model={model}
-                        permissionMode={permissionMode}
-                        collaborationMode={collaborationMode}
-                        agentFlavor={agentFlavor}
-                        voiceStatus={voiceStatus}
-                    />
-
                     <div className="overflow-hidden rounded-[20px] bg-[var(--app-secondary-bg)]">
                         {attachments.length > 0 ? (
                             <div className="flex flex-wrap gap-2 px-4 pt-3">
@@ -814,6 +804,15 @@ export function HappyComposer(props: {
                             onVoiceToggle={onVoiceToggle ?? (() => {})}
                             onVoiceMicToggle={onVoiceMicToggle}
                             onSend={handleSend}
+                            active={active}
+                            thinking={thinking}
+                            agentState={agentState}
+                            backgroundTaskCount={backgroundTaskCount}
+                            contextSize={contextSize}
+                            model={model}
+                            agentFlavor={agentFlavor}
+                            permissionMode={permissionMode}
+                            collaborationMode={collaborationMode}
                         />
                     </div>
                 </ComposerPrimitive.Root>

web/src/components/AssistantChat/HappyThread.tsx

@@ -160,6 +160,47 @@ export function HappyThread(props: {
         onFlushPendingRef.current()
     }, [])
 
+    // Alt+[/] — jump to prev/next message; Alt+Shift+[/] — scroll up/down
+    useEffect(() => {
+        const handler = (e: KeyboardEvent) => {
+            if (!e.altKey || e.metaKey || e.ctrlKey) return
+            const isBracketLeft = e.code === 'BracketLeft'
+            const isBracketRight = e.code === 'BracketRight'
+            if (!isBracketLeft && !isBracketRight) return
+            e.preventDefault()
+            e.stopPropagation()
+            const viewport = viewportRef.current
+            if (!viewport) return
+
+            if (e.shiftKey) {
+                // Jump to prev/next message
+                const messages = Array.from(viewport.querySelectorAll('.happy-thread-messages > *')) as HTMLElement[]
+                if (messages.length === 0) return
+                const scrollTop = viewport.scrollTop
+                if (isBracketLeft) {
+                    let target: HTMLElement | null = null
+                    for (let i = messages.length - 1; i >= 0; i--) {
+                        if (messages[i].offsetTop < scrollTop - 8) { target = messages[i]; break }
+                    }
+                    viewport.scrollTo({ top: target ? target.offsetTop : 0, behavior: 'smooth' })
+                } else {
+                    for (let i = 0; i < messages.length; i++) {
+                        if (messages[i].offsetTop > scrollTop + 8) {
+                            viewport.scrollTo({ top: messages[i].offsetTop, behavior: 'smooth' })
+                            break
+                        }
+                    }
+                }
+            } else {
+                // Scroll by ~40% of viewport height
+                const amount = viewport.clientHeight * 0.4
+                viewport.scrollBy({ top: isBracketLeft ? -amount : amount, behavior: 'smooth' })
+            }
+        }
+        document.addEventListener('keydown', handler, true)
+        return () => document.removeEventListener('keydown', handler, true)
+    }, [])
+
     // Reset state when session changes
     useEffect(() => {
         setAutoScrollEnabled(true)
@@ -280,7 +321,7 @@ export function HappyThread(props: {
             <ThreadPrimitive.Root className="flex min-h-0 flex-1 flex-col relative">
                 <ThreadPrimitive.Viewport asChild autoScroll={autoScrollEnabled}>
                     <div ref={viewportRef} className="app-scroll-y min-h-0 flex-1 overflow-x-hidden">
-                        <div className="mx-auto w-full max-w-content min-w-0 p-3">
+                        <div className={`w-full min-w-0 p-3 ${window.self !== window.top ? '' : 'mx-auto max-w-content'}`}>
                             <div ref={topSentinelRef} className="h-px w-full" aria-hidden="true" />
                             {showSkeleton ? (
                                 <MessageSkeleton />

web/src/components/AssistantChat/StatusBar.tsx

@@ -37,7 +37,7 @@ const PERMISSION_TONE_CLASSES: Record<PermissionModeTone, string> = {
     danger: 'text-red-500'
 }
 
-function getConnectionStatus(
+export function getConnectionStatus(
     active: boolean,
     thinking: boolean,
     agentState: AgentState | null | undefined,
@@ -102,7 +102,7 @@ function getConnectionStatus(
     }
 }
 
-function getContextWarning(contextSize: number, maxContextSize: number, t: (key: string, params?: Record<string, string | number>) => string): { text: string; color: string } | null {
+export function getContextWarning(contextSize: number, maxContextSize: number, t: (key: string, params?: Record<string, string | number>) => string): { text: string; color: string } | null {
     const percentageUsed = (contextSize / maxContextSize) * 100
     const percentageRemaining = Math.max(0, 100 - percentageUsed)