diff --git a/packages/stage-pages/src/pages/devtools/context-flow.vue b/packages/stage-pages/src/pages/devtools/context-flow.vue
deleted file mode 100644
index 02efd110f..000000000
--- a/packages/stage-pages/src/pages/devtools/context-flow.vue
+++ /dev/null
@@ -1,1125 +0,0 @@
-<script setup lang="ts">
-import type { WebSocketBaseEvent, WebSocketEvents } from '@proj-airi/server-sdk'
-import type { ChatStreamEvent, ContextMessage } from '@proj-airi/stage-ui/types/chat'
-
-import { errorMessageFrom } from '@moeru/std'
-import { ContextUpdateStrategy } from '@proj-airi/server-sdk'
-import { Section } from '@proj-airi/stage-ui/components'
-import { useCharacterStore } from '@proj-airi/stage-ui/stores/character'
-import { useCharacterOrchestratorStore } from '@proj-airi/stage-ui/stores/character-orchestrator'
-import { CHAT_STREAM_CHANNEL_NAME, CONTEXT_CHANNEL_NAME, useChatStore } from '@proj-airi/stage-ui/stores/chat'
-import { useModsServerChannelStore } from '@proj-airi/stage-ui/stores/mods/api/channel-server'
-import { Button, Callout, FieldCheckbox, FieldInput, FieldTextArea, Input, SelectTab } from '@proj-airi/ui'
-import { useBroadcastChannel } from '@vueuse/core'
-import { nanoid } from 'nanoid'
-import { computed, nextTick, onMounted, onUnmounted, ref, watch } from 'vue'
-import { toast } from 'vue-sonner'
-
-type FlowDirection = 'incoming' | 'outgoing'
-type FlowChannel = 'server' | 'broadcast' | 'chat' | 'devtools'
-
-interface FlowEntry {
-  id: number
-  timestamp: number
-  direction: FlowDirection
-  channel: FlowChannel
-  type: string
-  summary?: string
-  payload?: unknown
-  searchText: string
-}
-
-const chatStore = useChatStore()
-const characterStore = useCharacterStore()
-const characterOrchestratorStore = useCharacterOrchestratorStore()
-const serverChannelStore = useModsServerChannelStore()
-
-const entries = ref<FlowEntry[]>([])
-const showIncoming = ref(true)
-const showOutgoing = ref(true)
-const showServer = ref(true)
-const showBroadcast = ref(false)
-const showChat = ref(false)
-const showDevtools = ref(false)
-const filterText = ref('')
-const maxEntries = ref('200')
-
-const testPayload = ref('{"type":"coding:context","data":{"file":{"path":"README.md"}}}')
-const testStrategy = ref<ContextUpdateStrategy>(ContextUpdateStrategy.ReplaceSelf)
-
-const testSparkNotifyPayload = ref(JSON.stringify({
-  kind: 'ping',
-  urgency: 'immediate',
-  headline: 'Minecraft entity `zombie` attacked you, health dropped 2 points.',
-  note: 'Triggered from minecraft',
-  destinations: ['character'],
-  payload: {
-    message: 'Hello from Context Flow devtools',
-  },
-}, null, 2))
-
-const streamContainer = ref<HTMLDivElement>()
-
-const directionOptions = [
-  { label: 'All', value: 'all' },
-  { label: 'Incoming', value: 'incoming' },
-  { label: 'Outgoing', value: 'outgoing' },
-]
-
-const directionFilter = ref<'all' | FlowDirection>('all')
-const previewMaxLength = 420
-
-interface SparkNotifyEntryState {
-  eventId: string
-  sparkId?: string
-  handling: boolean
-  commands: WebSocketEvents['spark:command'][]
-  reaction: string
-  startedAt: number
-  endedAt?: number
-  error?: string
-}
-
-const sparkNotifyStates = ref<Map<string, SparkNotifyEntryState>>(new Map())
-
-interface PreviewItem {
-  label: string
-  value: string
-}
-
-const maxEntriesValue = computed(() => {
-  const parsed = Number.parseInt(maxEntries.value, 10)
-  if (!Number.isFinite(parsed))
-    return 200
-  return Math.min(Math.max(parsed, 50), 1000)
-})
-
-const filteredEntries = computed(() => {
-  const query = filterText.value.trim().toLowerCase()
-  const filtered = entries.value.filter((entry) => {
-    if (directionFilter.value !== 'all' && entry.direction !== directionFilter.value)
-      return false
-    if (!showIncoming.value && entry.direction === 'incoming')
-      return false
-    if (!showOutgoing.value && entry.direction === 'outgoing')
-      return false
-    if (!showServer.value && entry.channel === 'server')
-      return false
-    if (!showBroadcast.value && entry.channel === 'broadcast')
-      return false
-    if (!showChat.value && entry.channel === 'chat')
-      return false
-    if (!showDevtools.value && entry.channel === 'devtools')
-      return false
-    if (!query)
-      return true
-    return entry.searchText.includes(query)
-  })
-  return filtered.slice().reverse()
-})
-
-function normalizePayload(payload: unknown) {
-  try {
-    return JSON.parse(JSON.stringify(payload)) as unknown
-  }
-  catch {
-    return payload
-  }
-}
-
-function truncateText(value: string, limit = 160) {
-  if (value.length <= limit)
-    return value
-  return `${value.slice(0, limit)}...`
-}
-
-function formatDestinations(destinations: unknown) {
-  if (!destinations)
-    return ''
-  if (Array.isArray(destinations))
-    return destinations.join(', ')
-  if (typeof destinations === 'string')
-    return destinations
-  try {
-    return JSON.stringify(destinations)
-  }
-  catch {
-    return String(destinations)
-  }
-}
-
-function getPayloadData(entry: FlowEntry) {
-  const payload = entry.payload as Record<string, any> | undefined
-  if (!payload)
-    return undefined
-  return payload.data ?? payload
-}
-
-function getEventSource(entry: FlowEntry) {
-  const payload = entry.payload as Record<string, any> | undefined
-  if (!payload)
-    return undefined
-  return payload.source as string | undefined
-}
-
-function summarizeContextUpdate(update: { text?: string, content?: unknown, destinations?: unknown }) {
-  const summaryParts: string[] = []
-  if (update.text) {
-    summaryParts.push(`text="${truncateText(update.text, 120)}"`)
-  }
-  if (update.content !== undefined) {
-    const contentText = typeof update.content === 'string'
-      ? update.content
-      : (() => {
-          try {
-            return JSON.stringify(update.content)
-          }
-          catch {
-            return '[unserializable]'
-          }
-        })()
-    summaryParts.push(`content="${truncateText(contentText, 120)}"`)
-  }
-  if (update.destinations !== undefined) {
-    summaryParts.push(`destinations="${truncateText(formatDestinations(update.destinations), 120)}"`)
-  }
-  return summaryParts.join(' ')
-}
-
-function toPreviewValue(value: unknown) {
-  if (value === undefined || value === null)
-    return ''
-  if (typeof value === 'string')
-    return value
-  try {
-    return JSON.stringify(value, null, 2)
-  }
-  catch {
-    return String(value)
-  }
-}
-
-function formatPreviewValue(value: unknown) {
-  const text = toPreviewValue(value)
-  if (!text)
-    return ''
-  return truncateText(text, previewMaxLength)
-}
-
-function getContextUpdatePreview(entry: FlowEntry) {
-  const candidate = getPayloadData(entry) as Record<string, any> | undefined
-  if (!candidate || (candidate.text === undefined && candidate.content === undefined && candidate.destinations === undefined))
-    return null
-  return {
-    text: candidate.text as string | undefined,
-    content: candidate.content as unknown,
-    destinations: candidate.destinations as unknown,
-  }
-}
-
-function buildPreviewItems(entry: FlowEntry): PreviewItem[] {
-  const items: PreviewItem[] = []
-  const contextPreview = getContextUpdatePreview(entry)
-  if (contextPreview) {
-    if (contextPreview.text) {
-      items.push({ label: 'Text', value: formatPreviewValue(contextPreview.text) })
-    }
-    if (contextPreview.content !== undefined) {
-      items.push({ label: 'Content', value: formatPreviewValue(contextPreview.content) })
-    }
-    if (contextPreview.destinations !== undefined) {
-      items.push({ label: 'Destinations', value: formatPreviewValue(formatDestinations(contextPreview.destinations)) })
-    }
-    return items
-  }
-
-  const payload = getPayloadData(entry) as Record<string, any> | undefined
-  if (payload?.destinations !== undefined) {
-    items.push({ label: 'Destinations', value: formatPreviewValue(formatDestinations(payload.destinations)) })
-  }
-  if (entry.type.startsWith('spark:')) {
-    if (payload?.headline)
-      items.push({ label: 'Headline', value: formatPreviewValue(payload.headline) })
-    if (payload?.state)
-      items.push({ label: 'State', value: formatPreviewValue(payload.state) })
-    if (payload?.intent)
-      items.push({ label: 'Intent', value: formatPreviewValue(payload.intent) })
-  }
-  if (payload?.messageText) {
-    items.push({ label: 'Message', value: formatPreviewValue(payload.messageText) })
-  }
-  else if (payload?.literal) {
-    items.push({ label: 'Token', value: formatPreviewValue(payload.literal) })
-  }
-  else if (payload?.special) {
-    items.push({ label: 'Token', value: formatPreviewValue(payload.special) })
-  }
-  else if (payload?.message) {
-    items.push({ label: 'Message', value: formatPreviewValue(payload.message) })
-  }
-  else if (payload?.name && entry.type === 'module:announce') {
-    items.push({ label: 'Module', value: formatPreviewValue(payload.name) })
-  }
-  else if (payload?.text) {
-    items.push({ label: 'Text', value: formatPreviewValue(payload.text) })
-  }
-  else if (payload?.transcription) {
-    items.push({ label: 'Transcription', value: formatPreviewValue(payload.transcription) })
-  }
-  else if (entry.summary) {
-    items.push({ label: 'Summary', value: formatPreviewValue(entry.summary) })
-  }
-
-  return items
-}
-
-function getSparkNotifyReaction(eventId: string) {
-  const reactions = characterStore.reactions
-  for (let index = reactions.length - 1; index >= 0; index -= 1) {
-    const reaction = reactions[index]
-    if (reaction.sourceEventId === eventId)
-      return reaction
-  }
-  return undefined
-}
-
-function getSparkNotifyEntryState(entry: FlowEntry) {
-  if (entry.type !== 'spark:notify')
-    return undefined
-  const payload = getPayloadData(entry) as { id?: string } | undefined
-  if (!payload?.id)
-    return undefined
-  return sparkNotifyStates.value.get(payload.id)
-}
-
-function setSparkNotifyState(nextState: SparkNotifyEntryState) {
-  const nextMap = new Map(sparkNotifyStates.value)
-  nextMap.set(nextState.eventId, nextState)
-  sparkNotifyStates.value = nextMap
-}
-
-function updateSparkNotifyState(eventId: string, updater: (state: SparkNotifyEntryState) => SparkNotifyEntryState) {
-  const current = sparkNotifyStates.value.get(eventId)
-  if (!current)
-    return
-  setSparkNotifyState(updater(current))
-}
-
-function buildSparkCommandPreview(command: WebSocketEvents['spark:command']): PreviewItem[] {
-  const items: PreviewItem[] = []
-  if (command.intent)
-    items.push({ label: 'Intent', value: formatPreviewValue(command.intent) })
-  if (command.priority)
-    items.push({ label: 'Priority', value: formatPreviewValue(command.priority) })
-  if (command.interrupt !== undefined)
-    items.push({ label: 'Interrupt', value: formatPreviewValue(command.interrupt) })
-  if (command.destinations?.length)
-    items.push({ label: 'Destinations', value: formatPreviewValue(formatDestinations(command.destinations)) })
-  if (command.ack)
-    items.push({ label: 'Ack', value: formatPreviewValue(command.ack) })
-  if (command.guidance !== undefined)
-    items.push({ label: 'Guidance', value: formatPreviewValue(command.guidance) })
-  if (command.contexts !== undefined)
-    items.push({ label: 'Contexts', value: formatPreviewValue(command.contexts) })
-  return items
-}
-
-function summarizeServerEvent(event: { type: string, data: Record<string, any> }) {
-  switch (event.type) {
-    case 'module:announce':
-      return `name=${event.data.name} events=${event.data.possibleEvents?.length ?? 0}`
-    case 'spark:notify':
-      return [
-        event.data.headline ? `headline="${truncateText(String(event.data.headline), 120)}"` : '',
-        event.data.destinations ? `destinations="${truncateText(formatDestinations(event.data.destinations), 120)}"` : '',
-      ].filter(Boolean).join(' ')
-    case 'spark:emit':
-      return [
-        event.data.state ? `state=${event.data.state}` : '',
-        event.data.destinations ? `destinations="${truncateText(formatDestinations(event.data.destinations), 120)}"` : '',
-      ].filter(Boolean).join(' ')
-    case 'spark:command':
-      return [
-        event.data.intent ? `intent=${event.data.intent}` : '',
-        event.data.priority ? `priority=${event.data.priority}` : '',
-        event.data.destinations ? `destinations="${truncateText(formatDestinations(event.data.destinations), 120)}"` : '',
-      ].filter(Boolean).join(' ')
-    default:
-      if (event.data.text)
-        return `text="${truncateText(String(event.data.text), 120)}"`
-      if (event.data.transcription)
-        return `transcription="${truncateText(String(event.data.transcription), 120)}"`
-      return ''
-  }
-}
-
-function buildSearchText(entry: Omit<FlowEntry, 'searchText'>) {
-  const payloadText = typeof entry.payload === 'string'
-    ? entry.payload
-    : (() => {
-        try {
-          return JSON.stringify(entry.payload)
-        }
-        catch {
-          return ''
-        }
-      })()
-  return [
-    entry.direction,
-    entry.channel,
-    entry.type,
-    entry.summary ?? '',
-    payloadText,
-  ].join(' ').toLowerCase()
-}
-
-let entryId = 0
-function pushEntry(entry: Omit<FlowEntry, 'id' | 'timestamp' | 'searchText'>) {
-  const normalizedPayload = normalizePayload(entry.payload)
-  const nextEntry: FlowEntry = {
-    ...entry,
-    id: entryId++,
-    timestamp: Date.now(),
-    payload: normalizedPayload,
-    searchText: '',
-  }
-  nextEntry.searchText = buildSearchText(nextEntry)
-
-  entries.value.push(nextEntry)
-  if (entries.value.length > maxEntriesValue.value)
-    entries.value.splice(0, entries.value.length - maxEntriesValue.value)
-}
-
-function formatTimestamp(value: number) {
-  const date = new Date(value)
-  return date.toLocaleTimeString('en-US', { hour12: false })
-}
-
-function formatPayload(payload: unknown) {
-  if (payload === undefined)
-    return '-'
-  if (typeof payload === 'string')
-    return payload
-  try {
-    return JSON.stringify(payload, null, 2)
-  }
-  catch {
-    return String(payload)
-  }
-}
-
-function directionBadgeClasses(direction: FlowDirection) {
-  if (direction === 'incoming') {
-    return [
-      'bg-complementary-500/15',
-      'text-complementary-600',
-      'dark:text-complementary-300',
-      'border-complementary-500/30',
-    ]
-  }
-  return [
-    'bg-primary-500/15',
-    'text-primary-600',
-    'dark:text-primary-300',
-    'border-primary-500/30',
-  ]
-}
-
-function directionIconClass(direction: FlowDirection) {
-  return direction === 'incoming' ? 'i-solar:arrow-down-linear' : 'i-solar:arrow-up-linear'
-}
-
-function channelBadgeClasses(channel: FlowChannel) {
-  switch (channel) {
-    case 'server':
-      return ['bg-orange-500/15', 'text-orange-600', 'dark:text-orange-300', 'border-orange-500/30']
-    case 'broadcast':
-      return ['bg-violet-500/15', 'text-violet-600', 'dark:text-violet-300', 'border-violet-500/30']
-    case 'chat':
-      return ['bg-lime-500/15', 'text-lime-600', 'dark:text-lime-300', 'border-lime-500/30']
-    default:
-      return ['bg-neutral-400/15', 'text-neutral-600', 'dark:text-neutral-300', 'border-neutral-500/30']
-  }
-}
-
-function sourceBadgeClasses() {
-  return ['bg-neutral-400/15', 'text-neutral-600', 'dark:text-neutral-300', 'border-neutral-500/30']
-}
-
-function clearEntries() {
-  entries.value = []
-}
-
-function sendTestContextUpdate() {
-  const text = testPayload.value.trim()
-  if (!text)
-    return
-
-  serverChannelStore.sendContextUpdate({
-    strategy: testStrategy.value,
-    text,
-  })
-
-  pushEntry({
-    direction: 'outgoing',
-    channel: 'devtools',
-    type: 'context:update',
-    summary: `strategy=${testStrategy.value} length=${text.length}`,
-    payload: { strategy: testStrategy.value, text },
-  })
-}
-
-async function sendTestSparkNotify() {
-  const raw = testSparkNotifyPayload.value.trim()
-  if (!raw)
-    return
-
-  let parsed: any
-  try {
-    parsed = JSON.parse(raw)
-  }
-  catch (err) {
-    toast(`Invalid spark:notify: ${errorMessageFrom(err)}`)
-    return
-  }
-
-  const destinations = Array.isArray(parsed?.destinations) ? parsed.destinations.filter((d: unknown) => typeof d === 'string') : []
-  if (!parsed?.headline || !destinations.length) {
-    toast('Missing required fields (headline, destinations[]) for spark:notify')
-    return
-  }
-
-  // TODO(@nekomeowww): improve server event, support to have zod or valibot schema validation for better cross runtime handling
-  const notify = {
-    id: typeof parsed.id === 'string' && parsed.id ? parsed.id : nanoid(),
-    eventId: typeof parsed.eventId === 'string' && parsed.eventId ? parsed.eventId : nanoid(),
-    lane: typeof parsed.lane === 'string' ? parsed.lane : undefined,
-    kind: parsed.kind === 'alarm' || parsed.kind === 'ping' || parsed.kind === 'reminder' ? parsed.kind : 'ping',
-    urgency: parsed.urgency === 'immediate' || parsed.urgency === 'soon' || parsed.urgency === 'later' ? parsed.urgency : 'immediate',
-    headline: String(parsed.headline),
-    note: typeof parsed.note === 'string' ? parsed.note : undefined,
-    payload: parsed.payload && typeof parsed.payload === 'object' ? parsed.payload : undefined,
-    ttlMs: typeof parsed.ttlMs === 'number' ? parsed.ttlMs : undefined,
-    requiresAck: typeof parsed.requiresAck === 'boolean' ? parsed.requiresAck : undefined,
-    destinations,
-    metadata: parsed.metadata && typeof parsed.metadata === 'object' ? parsed.metadata : undefined,
-  }
-
-  const simulatedEvent: WebSocketBaseEvent<'spark:notify', WebSocketEvents['spark:notify']> = {
-    type: 'spark:notify',
-    source: 'devtools',
-    data: notify,
-  }
-
-  pushEntry({
-    direction: 'incoming',
-    channel: 'server',
-    type: 'spark:notify',
-    summary: summarizeServerEvent(simulatedEvent as any),
-    payload: simulatedEvent,
-  })
-
-  try {
-    setSparkNotifyState({
-      eventId: notify.id,
-      sparkId: notify.eventId,
-      handling: true,
-      commands: [],
-      reaction: '',
-      startedAt: Date.now(),
-    })
-
-    const result = await characterOrchestratorStore.handleSparkNotify(simulatedEvent)
-    const reaction = getSparkNotifyReaction(notify.id)
-    updateSparkNotifyState(notify.id, current => ({
-      ...current,
-      sparkId: notify.eventId,
-      handling: false,
-      commands: result?.commands ?? [],
-      reaction: reaction?.message ?? '',
-      endedAt: Date.now(),
-    }))
-
-    if (result?.commands?.length) {
-      for (const command of result.commands) {
-        serverChannelStore.send({
-          type: 'spark:command',
-          data: command,
-        })
-      }
-    }
-  }
-  catch (error) {
-    toast(`Error handling spark:notify: ${errorMessageFrom(error)}`)
-    updateSparkNotifyState(notify.id, current => ({
-      ...current,
-      handling: false,
-      endedAt: Date.now(),
-      error: errorMessageFrom(error),
-    }))
-  }
-}
-
-const { data: incomingContext } = useBroadcastChannel<ContextMessage, ContextMessage>({
-  name: CONTEXT_CHANNEL_NAME,
-})
-const { data: incomingStreamEvent } = useBroadcastChannel<ChatStreamEvent, ChatStreamEvent>({
-  name: CHAT_STREAM_CHANNEL_NAME,
-})
-
-const cleanupFns: Array<() => void> = []
-
-onMounted(() => {
-  cleanupFns.push(serverChannelStore.onContextUpdate((event) => {
-    pushEntry({
-      direction: 'incoming',
-      channel: 'server',
-      type: event.type,
-      summary: [
-        `source=${event.source}`,
-        `strategy=${event.data.strategy}`,
-        summarizeContextUpdate(event.data),
-      ].filter(Boolean).join(' '),
-      payload: event,
-    })
-  }))
-
-  const serverEventTypes = [
-    'module:announce',
-    'module:configure',
-    'module:authenticated',
-    'error',
-    'spark:notify',
-    'spark:emit',
-    'spark:command',
-    'input:text',
-    'input:text:voice',
-    'output:gen-ai:chat:message',
-    'output:gen-ai:chat:complete',
-    'output:gen-ai:chat:tool-call',
-  ] as const
-
-  for (const type of serverEventTypes) {
-    cleanupFns.push(serverChannelStore.onEvent(type, (event) => {
-      if (event.type === 'spark:notify') {
-        const eventId = (event as WebSocketBaseEvent<'spark:notify', WebSocketEvents['spark:notify']>).data?.id
-        if (eventId && !sparkNotifyStates.value.has(eventId)) {
-          const sparkId = (event as WebSocketBaseEvent<'spark:notify', WebSocketEvents['spark:notify']>).data?.eventId
-          setSparkNotifyState({
-            eventId,
-            sparkId,
-            handling: true,
-            commands: [],
-            reaction: '',
-            startedAt: Date.now(),
-          })
-        }
-      }
-
-      pushEntry({
-        direction: 'incoming',
-        channel: 'server',
-        type: event.type,
-        summary: summarizeServerEvent(event as any),
-        payload: event,
-      })
-    }))
-  }
-
-  cleanupFns.push(
-    chatStore.onBeforeMessageComposed(async (message, context) => {
-      pushEntry({
-        direction: 'outgoing',
-        channel: 'chat',
-        type: 'before-compose',
-        summary: truncateText(message),
-        payload: { message, context },
-      })
-    }),
-    chatStore.onAfterMessageComposed(async (message, context) => {
-      pushEntry({
-        direction: 'outgoing',
-        channel: 'chat',
-        type: 'after-compose',
-        summary: truncateText(message),
-        payload: { message, context },
-      })
-    }),
-    chatStore.onBeforeSend(async (message, context) => {
-      pushEntry({
-        direction: 'outgoing',
-        channel: 'chat',
-        type: 'before-send',
-        summary: truncateText(message),
-        payload: { message, context },
-      })
-    }),
-    chatStore.onAfterSend(async (message, context) => {
-      pushEntry({
-        direction: 'outgoing',
-        channel: 'chat',
-        type: 'after-send',
-        summary: truncateText(message),
-        payload: { message, context },
-      })
-    }),
-    chatStore.onTokenLiteral(async (literal, context) => {
-      pushEntry({
-        direction: 'outgoing',
-        channel: 'chat',
-        type: 'token-literal',
-        summary: truncateText(literal, 80),
-        payload: { literal, context },
-      })
-    }),
-    chatStore.onTokenSpecial(async (special, context) => {
-      pushEntry({
-        direction: 'outgoing',
-        channel: 'chat',
-        type: 'token-special',
-        summary: truncateText(special, 80),
-        payload: { special, context },
-      })
-    }),
-    chatStore.onStreamEnd(async (context) => {
-      pushEntry({
-        direction: 'outgoing',
-        channel: 'chat',
-        type: 'stream-end',
-        summary: 'stream completed',
-        payload: { context },
-      })
-    }),
-    chatStore.onAssistantResponseEnd(async (message, context) => {
-      pushEntry({
-        direction: 'outgoing',
-        channel: 'chat',
-        type: 'assistant-end',
-        summary: truncateText(message),
-        payload: { message, context },
-      })
-    }),
-    chatStore.onAssistantMessage(async (message, messageText, context) => {
-      pushEntry({
-        direction: 'outgoing',
-        channel: 'chat',
-        type: 'assistant-message',
-        summary: truncateText(messageText),
-        payload: { message, messageText, context },
-      })
-    }),
-    chatStore.onChatTurnComplete(async (chat, context) => {
-      pushEntry({
-        direction: 'outgoing',
-        channel: 'chat',
-        type: 'chat-turn-complete',
-        summary: truncateText(chat.outputText),
-        payload: { chat, context },
-      })
-    }),
-  )
-})
-
-watch(incomingContext, (event) => {
-  if (!event)
-    return
-
-  pushEntry({
-    direction: 'incoming',
-    channel: 'broadcast',
-    type: 'context:broadcast',
-    summary: [
-      `source=${event.source}`,
-      `strategy=${event.strategy}`,
-      summarizeContextUpdate(event),
-    ].filter(Boolean).join(' '),
-    payload: event,
-  })
-})
-
-watch(incomingStreamEvent, (event) => {
-  if (!event)
-    return
-
-  pushEntry({
-    direction: 'incoming',
-    channel: 'broadcast',
-    type: `stream:${event.type}`,
-    summary: event.type === 'token-literal'
-      ? truncateText(event.literal, 80)
-      : event.type === 'token-special'
-        ? truncateText(event.special, 80)
-        : event.type === 'assistant-message'
-          ? truncateText(event.messageText ?? '', 120)
-          : `session=${event.sessionId}`,
-    payload: event,
-  })
-})
-
-watch(() => entries.value.length, async () => {
-  await nextTick()
-  if (streamContainer.value)
-    streamContainer.value.scrollTop = 0
-})
-
-watch(() => characterStore.reactions.length, () => {
-  for (const state of sparkNotifyStates.value.values()) {
-    if (state.reaction)
-      continue
-    const reaction = getSparkNotifyReaction(state.eventId)
-    if (!reaction)
-      continue
-    updateSparkNotifyState(state.eventId, current => ({
-      ...current,
-      reaction: reaction.message,
-      handling: false,
-      endedAt: current.endedAt ?? Date.now(),
-    }))
-  }
-})
-
-watch(maxEntriesValue, () => {
-  if (entries.value.length > maxEntriesValue.value)
-    entries.value.splice(0, entries.value.length - maxEntriesValue.value)
-})
-
-onUnmounted(() => {
-  for (const cleanup of cleanupFns)
-    cleanup()
-})
-</script>
-
-<template>
-  <div :class="['flex', 'flex-col', 'gap-6']">
-    <Callout label="Context Flow">
-      Inspect incoming context updates (server + broadcast) and outgoing chat hooks in real time. Use this to verify
-      how plugin context (e.g. VSCode coding context) travels into the chat pipeline and out to server events.
-    </Callout>
-
-    <div :class="['grid', 'gap-6', 'lg:grid-cols-[360px_1fr]']">
-      <div :class="['flex', 'flex-col', 'gap-6', 'rounded-xl', 'bg-neutral-50', 'p-4', 'dark:bg-[rgba(0,0,0,0.3)]', 'h-fit']">
-        <div :class="['flex', 'items-center', 'gap-2', 'text-sm', 'font-semibold', 'text-neutral-600', 'dark:text-neutral-300']">
-          <div :class="['size-5', 'i-solar:filter-bold-duotone']" />
-          Filters
-        </div>
-        <div :class="['flex', 'flex-col', 'gap-3']">
-          <div :class="['flex', 'flex-col', 'gap-2', 'w-full']">
-            <div :class="['text-xs', 'font-medium', 'text-neutral-500', 'dark:text-neutral-400']">
-              Direction
-            </div>
-            <SelectTab
-              v-model="directionFilter"
-              size="sm"
-              :options="directionOptions"
-            />
-          </div>
-          <div :class="['flex', 'flex-col', 'gap-2', 'w-full']">
-            <div :class="['text-xs', 'font-medium', 'text-neutral-500', 'dark:text-neutral-400']">
-              Visibility
-            </div>
-            <div :class="['flex', 'flex-wrap', 'gap-2']">
-              <FieldCheckbox v-model="showIncoming" label="Show incoming" />
-              <FieldCheckbox v-model="showOutgoing" label="Show outgoing" />
-            </div>
-          </div>
-          <div :class="['flex', 'flex-col', 'gap-2', 'w-full']">
-            <div :class="['text-xs', 'font-medium', 'text-neutral-500', 'dark:text-neutral-400']">
-              Channels
-            </div>
-            <div :class="['flex', 'flex-wrap', 'gap-2']">
-              <FieldCheckbox v-model="showServer" label="Server" />
-              <FieldCheckbox v-model="showBroadcast" label="Broadcast" />
-              <FieldCheckbox v-model="showChat" label="Chat" />
-              <FieldCheckbox v-model="showDevtools" label="Devtools" />
-            </div>
-          </div>
-          <div :class="['flex', 'flex-col', 'gap-2', 'w-full']">
-            <FieldInput
-              v-model="maxEntries"
-              label="Max entries"
-              description="50-1000 (default 200)"
-              type="number"
-            />
-          </div>
-          <div :class="['flex', 'items-end', 'justify-end', 'w-full']">
-            <Button label="Clear" icon="i-solar:trash-bin-trash-bold-duotone" size="sm" @click="clearEntries" />
-          </div>
-        </div>
-      </div>
-
-      <div :class="['flex', 'flex-col', 'gap-2']">
-        <Section title="Send" icon="i-solar:plain-2-bold-duotone" inner-class="gap-3" :expand="false">
-          <div :class="['flex', 'flex-col', 'gap-2']">
-            <div :class="['text-xs', 'font-medium', 'text-neutral-500', 'dark:text-neutral-400']">
-              Strategy
-            </div>
-            <SelectTab
-              v-model="testStrategy"
-              size="sm"
-              :options="[
-                { label: 'Replace', value: ContextUpdateStrategy.ReplaceSelf },
-                { label: 'Append', value: ContextUpdateStrategy.AppendSelf },
-              ]"
-            />
-            <FieldTextArea
-              v-model="testPayload"
-              label="Payload"
-              description="Raw text payload sent as ContextUpdate.text. JSON is allowed."
-              :input-class="['font-mono', 'min-h-32']"
-            />
-            <div :class="['flex', 'justify-end']">
-              <Button label="Send context update" icon="i-solar:plain-2-bold-duotone" size="sm" @click="sendTestContextUpdate" />
-            </div>
-          </div>
-        </Section>
-        <Section title="Simulate incoming" icon="i-solar:plain-2-bold-duotone" inner-class="gap-3" :expand="false">
-          <FieldTextArea
-            v-model="testSparkNotifyPayload"
-            label="spark:notify"
-            description="Raw JSON payload for spark:notify. Required: headline, destinations[]. id/eventId will be auto-filled if missing."
-            :input-class="['font-mono', 'min-h-44', 'overflow-hidden']"
-          />
-          <div :class="['flex', 'justify-end']">
-            <Button
-              label="Send spark:notify"
-              icon="i-solar:bell-bing-bold-duotone"
-              size="sm"
-              @click="sendTestSparkNotify"
-            />
-          </div>
-        </Section>
-
-        <div :class="['flex']">
-          <Input
-            v-model="filterText"
-            placeholder="Search type, source, text..."
-          />
-        </div>
-        <div
-          ref="streamContainer"
-          :class="[
-            'max-h-[60vh]',
-            'min-h-[360px]',
-            'overflow-y-auto',
-            'rounded-lg',
-            'bg-white/70',
-            'p-3',
-            'dark:bg-neutral-950/50',
-          ]"
-        >
-          <div
-            v-if="!filteredEntries.length"
-            :class="['h-full', 'w-full', 'flex', 'items-center', 'justify-center', 'text-sm', 'text-neutral-500', 'dark:text-neutral-400']"
-          >
-            No data yet. Trigger a chat, send a context update, or enable broadcast capture.
-          </div>
-          <div v-else v-auto-animate :class="['grid', 'gap-3']">
-            <div
-              v-for="entry in filteredEntries"
-              :key="entry.id"
-              :class="[
-                'rounded-xl',
-                'border',
-                'border-neutral-200/70',
-                'bg-neutral-50/80',
-                'p-4',
-                'shadow-sm',
-                'dark:border-neutral-800/80',
-                'dark:bg-neutral-950/60',
-              ]"
-            >
-              <div :class="['flex', 'items-start', 'justify-between', 'gap-3']">
-                <div :class="['flex', 'flex-wrap', 'items-center', 'gap-2', 'text-xs']">
-                  <span :class="['rounded-full', 'border', 'px-2', 'py-0.5', 'flex', 'items-center', 'justify-center', ...directionBadgeClasses(entry.direction)]">
-                    <span :class="['size-3.5', directionIconClass(entry.direction)]" :aria-label="entry.direction" />
-                  </span>
-                  <span :class="['rounded-full', 'border', 'px-2', 'py-0.5', ...channelBadgeClasses(entry.channel)]">
-                    {{ entry.channel }}
-                  </span>
-                  <span
-                    v-if="getEventSource(entry)"
-                    :class="['rounded-full', 'border', 'px-2', 'py-0.5', ...sourceBadgeClasses()]"
-                  >
-                    {{ getEventSource(entry) }}
-                  </span>
-                  <span :class="['font-semibold', 'text-neutral-800', 'dark:text-neutral-100']">
-                    {{ entry.type }}
-                  </span>
-                </div>
-                <span :class="['font-mono', 'text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
-                  {{ formatTimestamp(entry.timestamp) }}
-                </span>
-              </div>
-
-              <div v-if="entry.summary" :class="['mt-2', 'text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
-                {{ entry.summary }}
-              </div>
-
-              <div
-                v-if="entry.type === 'spark:notify'"
-                :class="[
-                  'mt-3',
-                  'rounded-lg',
-                  'border',
-                  'border-neutral-200/70',
-                  'bg-white/80',
-                  'p-3',
-                  'text-xs',
-                  'dark:border-neutral-800/80',
-                  'dark:bg-neutral-900/70',
-                  'grid',
-                  'gap-3',
-                ]"
-              >
-                <div v-if="getSparkNotifyEntryState(entry)" :class="['grid', 'gap-3']">
-                  <div :class="['flex', 'items-center', 'justify-between', 'gap-2']">
-                    <div :class="['flex', 'items-center', 'gap-2', 'text-neutral-700', 'dark:text-neutral-200']">
-                      <span
-                        v-if="getSparkNotifyEntryState(entry)?.handling"
-                        :class="['size-3.5', 'i-solar:spinner-line-duotone', 'animate-spin']"
-                      />
-                      <span>
-                        {{ getSparkNotifyEntryState(entry)?.handling ? 'Handling spark:notify...' : 'spark:notify handled' }}
-                      </span>
-                    </div>
-                    <span
-                      v-if="getSparkNotifyEntryState(entry)?.endedAt"
-                      :class="['text-[11px]', 'text-neutral-400', 'dark:text-neutral-500']"
-                    >
-                      {{
-                        Math.max(
-                          0,
-                          (getSparkNotifyEntryState(entry)?.endedAt ?? 0)
-                            - (getSparkNotifyEntryState(entry)?.startedAt ?? 0),
-                        )
-                      }}ms
-                    </span>
-                  </div>
-                  <div :class="['text-[11px]', 'text-neutral-500', 'dark:text-neutral-400']">
-                    eventId: {{ getSparkNotifyEntryState(entry)?.eventId }} · sparkId: {{ getSparkNotifyEntryState(entry)?.sparkId ?? '-' }}
-                  </div>
-                  <div
-                    v-if="getSparkNotifyEntryState(entry)?.error"
-                    :class="['rounded-md', 'border', 'border-rose-500/40', 'bg-rose-500/10', 'px-2', 'py-1.5', 'text-rose-600', 'dark:text-rose-300']"
-                  >
-                    {{ getSparkNotifyEntryState(entry)?.error }}
-                  </div>
-                  <div :class="['grid', 'gap-2']">
-                    <div :class="['text-[11px]', 'uppercase', 'tracking-[0.06em]', 'text-neutral-400', 'dark:text-neutral-500']">
-                      Output text
-                    </div>
-                    <pre :class="['max-h-40', 'overflow-auto', 'whitespace-pre-wrap', 'break-words', 'text-xs', 'font-mono', 'text-neutral-800', 'dark:text-neutral-100']">
-{{ getSparkNotifyEntryState(entry)?.reaction || '-' }}
-                    </pre>
-                  </div>
-                  <div :class="['grid', 'gap-2']">
-                    <div :class="['text-[11px]', 'uppercase', 'tracking-[0.06em]', 'text-neutral-400', 'dark:text-neutral-500']">
-                      Commands
-                    </div>
-                    <div v-if="getSparkNotifyEntryState(entry)?.commands.length" :class="['grid', 'gap-2']">
-                      <div
-                        v-for="(command, index) in getSparkNotifyEntryState(entry)?.commands ?? []"
-                        :key="command.commandId ?? `${entry.id}-${index}`"
-                        :class="[
-                          'rounded-lg',
-                          'border',
-                          'border-neutral-200/70',
-                          'bg-white/80',
-                          'p-3',
-                          'dark:border-neutral-800/80',
-                          'dark:bg-neutral-950/60',
-                          'grid',
-                          'gap-2',
-                        ]"
-                      >
-                        <div :class="['text-xs', 'font-semibold', 'text-neutral-700', 'dark:text-neutral-200']">
-                          Command {{ index + 1 }}
-                        </div>
-                        <div v-if="buildSparkCommandPreview(command).length" :class="['grid', 'gap-2', 'sm:grid-cols-2']">
-                          <div
-                            v-for="item in buildSparkCommandPreview(command)"
-                            :key="`${entry.id}-${index}-${item.label}`"
-                            :class="[
-                              'rounded-lg',
-                              'border',
-                              'border-neutral-200/70',
-                              'bg-white/80',
-                              'p-2.5',
-                              'dark:border-neutral-800/80',
-                              'dark:bg-neutral-900/70',
-                            ]"
-                          >
-                            <div :class="['text-[11px]', 'uppercase', 'tracking-[0.06em]', 'text-neutral-400', 'dark:text-neutral-500']">
-                              {{ item.label }}
-                            </div>
-                            <pre :class="['mt-1.5', 'max-h-32', 'overflow-auto', 'whitespace-pre-wrap', 'break-words', 'text-xs', 'font-mono', 'text-neutral-800', 'dark:text-neutral-100']">
-{{ item.value || '-' }}
-                            </pre>
-                          </div>
-                        </div>
-                        <div v-else :class="['text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
-                          No command details available.
-                        </div>
-                      </div>
-                    </div>
-                    <div v-else :class="['text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
-                      No commands returned.
-                    </div>
-                  </div>
-                </div>
-                <div v-else :class="['text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
-                  No spark:notify handling data yet.
-                </div>
-              </div>
-
-              <div :class="['mt-3', 'grid', 'gap-2']">
-                <div :class="['text-[11px]', 'uppercase', 'tracking-[0.08em]', 'text-neutral-400', 'dark:text-neutral-500']">
-                  Preview
-                </div>
-                <div v-if="buildPreviewItems(entry).length" :class="['grid', 'gap-2', 'sm:grid-cols-2']">
-                  <div
-                    v-for="item in buildPreviewItems(entry)"
-                    :key="`${entry.id}-${item.label}`"
-                    :class="[
-                      'rounded-lg',
-                      'border',
-                      'border-neutral-200/70',
-                      'bg-white/80',
-                      'p-3',
-                      'dark:border-neutral-800/80',
-                      'dark:bg-neutral-900/70',
-                    ]"
-                  >
-                    <div :class="['text-[11px]', 'uppercase', 'tracking-[0.06em]', 'text-neutral-400', 'dark:text-neutral-500']">
-                      {{ item.label }}
-                    </div>
-                    <pre :class="['mt-2', 'max-h-40', 'overflow-auto', 'whitespace-pre-wrap', 'break-words', 'text-xs', 'font-mono', 'text-neutral-800', 'dark:text-neutral-100']">
-{{ item.value || '-' }}
-                    </pre>
-                  </div>
-                </div>
-                <div v-else :class="['text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
-                  No preview available.
-                </div>
-              </div>
-
-              <details :class="['mt-3']">
-                <summary :class="['cursor-pointer', 'text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
-                  Details
-                </summary>
-                <pre :class="['mt-2', 'max-h-64', 'overflow-auto', 'rounded-lg', 'bg-neutral-900/90', 'p-3', 'text-xs', 'text-neutral-100']">
-{{ formatPayload(entry.payload) }}
-                </pre>
-              </details>
-            </div>
-          </div>
-        </div>
-      </div>
-    </div>
-  </div>
-</template>
-
-<route lang="yaml">
-meta:
-  layout: settings
-</route>
diff --git a/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-actions.vue b/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-actions.vue
new file mode 100644
index 000000000..bb2cccc48
--- /dev/null
+++ b/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-actions.vue
@@ -0,0 +1,60 @@
+<script setup lang="ts">
+import { ContextUpdateStrategy } from '@proj-airi/server-sdk'
+import { Section } from '@proj-airi/stage-ui/components'
+import { Button, FieldTextArea, SelectTab } from '@proj-airi/ui'
+
+const emit = defineEmits<{
+  (event: 'sendContextUpdate'): void
+  (event: 'sendSparkNotify'): void
+}>()
+const testStrategy = defineModel<ContextUpdateStrategy>('testStrategy', { required: true })
+const testPayload = defineModel<string>('testPayload', { required: true })
+const testSparkNotifyPayload = defineModel<string>('testSparkNotifyPayload', { required: true })
+
+const strategyOptions = [
+  { label: 'Replace', value: ContextUpdateStrategy.ReplaceSelf },
+  { label: 'Append', value: ContextUpdateStrategy.AppendSelf },
+]
+</script>
+
+<template>
+  <div :class="['flex', 'flex-col', 'gap-2']">
+    <Section title="Send" icon="i-solar:plain-2-bold-duotone" inner-class="gap-3" :expand="false">
+      <div :class="['flex', 'flex-col', 'gap-2']">
+        <div :class="['text-xs', 'font-medium', 'text-neutral-500', 'dark:text-neutral-400']">
+          Strategy
+        </div>
+        <SelectTab
+          v-model="testStrategy"
+          size="sm"
+          :options="strategyOptions"
+        />
+        <FieldTextArea
+          v-model="testPayload"
+          label="Payload"
+          description="Raw text payload sent as ContextUpdate.text. JSON is allowed."
+          :input-class="['font-mono', 'min-h-32']"
+        />
+        <div :class="['flex', 'justify-end']">
+          <Button label="Send context update" icon="i-solar:plain-2-bold-duotone" size="sm" @click="emit('sendContextUpdate')" />
+        </div>
+      </div>
+    </Section>
+    <Section title="Simulate incoming" icon="i-solar:plain-2-bold-duotone" inner-class="gap-3" :expand="false">
+      <FieldTextArea
+        v-model="testSparkNotifyPayload"
+        label="spark:notify"
+        description="Raw JSON payload for spark:notify. Required: headline, destinations[]. id/eventId will be auto-filled if missing."
+        :input-class="['font-mono', 'min-h-44', 'overflow-hidden']"
+      />
+      <div :class="['flex', 'justify-end']">
+        <Button
+          label="Send spark:notify"
+          icon="i-solar:bell-bing-bold-duotone"
+          size="sm"
+          @click="emit('sendSparkNotify')"
+        />
+      </div>
+    </Section>
+  </div>
+</template>
diff --git a/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-entry-card.vue b/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-entry-card.vue
new file mode 100644
index 000000000..23e29e5b6
--- /dev/null
+++ b/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-entry-card.vue
@@ -0,0 +1,79 @@
+<script setup lang="ts">
+import type { FlowEntry, SparkNotifyEntryState } from '../context-flow-types'
+
+import ContextFlowPreview from './context-flow-preview.vue'
+import ContextFlowSparkNotify from './context-flow-spark-notify.vue'
+
+import { useContextFlowFormatters } from '../composables/use-context-flow-formatters'
+
+defineProps<{ entry: FlowEntry, sparkNotifyState?: SparkNotifyEntryState }>()
+
+const {
+  channelBadgeClasses,
+  directionBadgeClasses,
+  directionIconClass,
+  formatPayload,
+  formatTimestamp,
+  getEventSource,
+  sourceBadgeClasses,
+} = useContextFlowFormatters()
+</script>
+
+<template>
+  <div
+    :class="[
+      'rounded-xl',
+      'border',
+      'border-neutral-200/70',
+      'bg-neutral-50/80',
+      'p-4',
+      'shadow-sm',
+      'dark:border-neutral-800/80',
+      'dark:bg-neutral-950/60',
+    ]"
+  >
+    <div :class="['flex', 'items-start', 'justify-between', 'gap-3']">
+      <div :class="['flex', 'flex-wrap', 'items-center', 'gap-2', 'text-xs']">
+        <span :class="['rounded-full', 'border', 'px-2', 'py-0.5', 'flex', 'items-center', 'justify-center', ...directionBadgeClasses(entry.direction)]">
+          <span :class="['size-3.5', directionIconClass(entry.direction)]" :aria-label="entry.direction" />
+        </span>
+        <span :class="['rounded-full', 'border', 'px-2', 'py-0.5', ...channelBadgeClasses(entry.channel)]">
+          {{ entry.channel }}
+        </span>
+        <span
+          v-if="getEventSource(entry)"
+          :class="['rounded-full', 'border', 'px-2', 'py-0.5', ...sourceBadgeClasses()]"
+        >
+          {{ getEventSource(entry) }}
+        </span>
+        <span :class="['font-semibold', 'text-neutral-800', 'dark:text-neutral-100']">
+          {{ entry.type }}
+        </span>
+      </div>
+      <span :class="['font-mono', 'text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
+        {{ formatTimestamp(entry.timestamp) }}
+      </span>
+    </div>
+
+    <div v-if="entry.summary" :class="['mt-2', 'text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
+      {{ entry.summary }}
+    </div>
+
+    <ContextFlowSparkNotify
+      v-if="entry.type === 'spark:notify'"
+      :entry-id="entry.id"
+      :state="sparkNotifyState"
+    />
+
+    <ContextFlowPreview :entry="entry" />
+
+    <details :class="['mt-3']">
+      <summary :class="['cursor-pointer', 'text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
+        Details
+      </summary>
+      <pre :class="['mt-2', 'max-h-64', 'overflow-auto', 'rounded-lg', 'bg-neutral-900/90', 'p-3', 'text-xs', 'text-neutral-100']">
+{{ formatPayload(entry.payload) }}
+      </pre>
+    </details>
+  </div>
+</template>
diff --git a/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-filters.vue b/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-filters.vue
new file mode 100644
index 000000000..502122f38
--- /dev/null
+++ b/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-filters.vue
@@ -0,0 +1,73 @@
+<script setup lang="ts">
+import type { FlowDirection } from '../context-flow-types'
+
+import { Button, FieldCheckbox, FieldInput, SelectTab } from '@proj-airi/ui'
+
+const emit = defineEmits<{ (event: 'clear'): void }>()
+const directionFilter = defineModel<'all' | FlowDirection>('directionFilter', { required: true })
+const showIncoming = defineModel<boolean>('showIncoming', { required: true })
+const showOutgoing = defineModel<boolean>('showOutgoing', { required: true })
+const showServer = defineModel<boolean>('showServer', { required: true })
+const showBroadcast = defineModel<boolean>('showBroadcast', { required: true })
+const showChat = defineModel<boolean>('showChat', { required: true })
+const showDevtools = defineModel<boolean>('showDevtools', { required: true })
+const maxEntries = defineModel<string>('maxEntries', { required: true })
+
+const directionOptions = [
+  { label: 'All', value: 'all' },
+  { label: 'Incoming', value: 'incoming' },
+  { label: 'Outgoing', value: 'outgoing' },
+]
+</script>
+
+<template>
+  <div :class="['flex', 'flex-col', 'gap-6', 'rounded-xl', 'bg-neutral-50', 'p-4', 'dark:bg-[rgba(0,0,0,0.3)]', 'h-fit']">
+    <div :class="['flex', 'items-center', 'gap-2', 'text-sm', 'font-semibold', 'text-neutral-600', 'dark:text-neutral-300']">
+      <div :class="['size-5', 'i-solar:filter-bold-duotone']" />
+      Filters
+    </div>
+    <div :class="['flex', 'flex-col', 'gap-3']">
+      <div :class="['flex', 'flex-col', 'gap-2', 'w-full']">
+        <div :class="['text-xs', 'font-medium', 'text-neutral-500', 'dark:text-neutral-400']">
+          Direction
+        </div>
+        <SelectTab
+          v-model="directionFilter"
+          size="sm"
+          :options="directionOptions"
+        />
+      </div>
+      <div :class="['flex', 'flex-col', 'gap-2', 'w-full']">
+        <div :class="['text-xs', 'font-medium', 'text-neutral-500', 'dark:text-neutral-400']">
+          Visibility
+        </div>
+        <div :class="['flex', 'flex-wrap', 'gap-2']">
+          <FieldCheckbox v-model="showIncoming" label="Show incoming" />
+          <FieldCheckbox v-model="showOutgoing" label="Show outgoing" />
+        </div>
+      </div>
+      <div :class="['flex', 'flex-col', 'gap-2', 'w-full']">
+        <div :class="['text-xs', 'font-medium', 'text-neutral-500', 'dark:text-neutral-400']">
+          Channels
+        </div>
+        <div :class="['flex', 'flex-wrap', 'gap-2']">
+          <FieldCheckbox v-model="showServer" label="Server" />
+          <FieldCheckbox v-model="showBroadcast" label="Broadcast" />
+          <FieldCheckbox v-model="showChat" label="Chat" />
+          <FieldCheckbox v-model="showDevtools" label="Devtools" />
+        </div>
+      </div>
+      <div :class="['flex', 'flex-col', 'gap-2', 'w-full']">
+        <FieldInput
+          v-model="maxEntries"
+          label="Max entries"
+          description="50-1000 (default 200)"
+          type="number"
+        />
+      </div>
+      <div :class="['flex', 'items-end', 'justify-end', 'w-full']">
+        <Button label="Clear" icon="i-solar:trash-bin-trash-bold-duotone" size="sm" @click="emit('clear')" />
+      </div>
+    </div>
+  </div>
+</template>
diff --git a/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-preview.vue b/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-preview.vue
new file mode 100644
index 000000000..0f917c567
--- /dev/null
+++ b/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-preview.vue
@@ -0,0 +1,42 @@
+<script setup lang="ts">
+import type { FlowEntry } from '../context-flow-types'
+
+import { useContextFlowFormatters } from '../composables/use-context-flow-formatters'
+
+defineProps<{ entry: FlowEntry }>()
+
+const { buildPreviewItems } = useContextFlowFormatters()
+</script>
+
+<template>
+  <div :class="['mt-3', 'grid', 'gap-2']">
+    <div :class="['text-[11px]', 'uppercase', 'tracking-[0.08em]', 'text-neutral-400', 'dark:text-neutral-500']">
+      Preview
+    </div>
+    <div v-if="buildPreviewItems(entry).length" :class="['grid', 'gap-2', 'sm:grid-cols-2']">
+      <div
+        v-for="item in buildPreviewItems(entry)"
+        :key="`${entry.id}-${item.label}`"
+        :class="[
+          'rounded-lg',
+          'border',
+          'border-neutral-200/70',
+          'bg-white/80',
+          'p-3',
+          'dark:border-neutral-800/80',
+          'dark:bg-neutral-900/70',
+        ]"
+      >
+        <div :class="['text-[11px]', 'uppercase', 'tracking-[0.06em]', 'text-neutral-400', 'dark:text-neutral-500']">
+          {{ item.label }}
+        </div>
+        <pre :class="['mt-2', 'max-h-40', 'overflow-auto', 'whitespace-pre-wrap', 'break-words', 'text-xs', 'font-mono', 'text-neutral-800', 'dark:text-neutral-100']">
+{{ item.value || '-' }}
+        </pre>
+      </div>
+    </div>
+    <div v-else :class="['text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
+      No preview available.
+    </div>
+  </div>
+</template>
diff --git a/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-spark-notify.vue b/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-spark-notify.vue
new file mode 100644
index 000000000..224866b95
--- /dev/null
+++ b/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-spark-notify.vue
@@ -0,0 +1,121 @@
+<script setup lang="ts">
+import type { SparkNotifyEntryState } from '../context-flow-types'
+
+import { useContextFlowFormatters } from '../composables/use-context-flow-formatters'
+
+defineProps<{ entryId: number, state?: SparkNotifyEntryState }>()
+
+const { buildSparkCommandPreview } = useContextFlowFormatters()
+</script>
+
+<template>
+  <div
+    :class="[
+      'mt-3',
+      'rounded-lg',
+      'border',
+      'border-neutral-200/70',
+      'bg-white/80',
+      'p-3',
+      'text-xs',
+      'dark:border-neutral-800/80',
+      'dark:bg-neutral-900/70',
+      'grid',
+      'gap-3',
+    ]"
+  >
+    <div v-if="state" :class="['grid', 'gap-3']">
+      <div :class="['flex', 'items-center', 'justify-between', 'gap-2']">
+        <div :class="['flex', 'items-center', 'gap-2', 'text-neutral-700', 'dark:text-neutral-200']">
+          <span
+            v-if="state.handling"
+            :class="['size-3.5', 'i-solar:spinner-line-duotone', 'animate-spin']"
+          />
+          <span>
+            {{ state.handling ? 'Handling spark:notify...' : 'spark:notify handled' }}
+          </span>
+        </div>
+        <span
+          v-if="state.endedAt"
+          :class="['text-[11px]', 'text-neutral-400', 'dark:text-neutral-500']"
+        >
+          {{ Math.max(0, (state.endedAt ?? 0) - (state.startedAt ?? 0)) }}ms
+        </span>
+      </div>
+      <div :class="['text-[11px]', 'text-neutral-500', 'dark:text-neutral-400']">
+        eventId: {{ state.eventId }} · sparkId: {{ state.sparkId ?? '-' }}
+      </div>
+      <div
+        v-if="state.error"
+        :class="['rounded-md', 'border', 'border-rose-500/40', 'bg-rose-500/10', 'px-2', 'py-1.5', 'text-rose-600', 'dark:text-rose-300']"
+      >
+        {{ state.error }}
+      </div>
+      <div :class="['grid', 'gap-2']">
+        <div :class="['text-[11px]', 'uppercase', 'tracking-[0.06em]', 'text-neutral-400', 'dark:text-neutral-500']">
+          Output text
+        </div>
+        <pre :class="['max-h-40', 'overflow-auto', 'whitespace-pre-wrap', 'break-words', 'text-xs', 'font-mono', 'text-neutral-800', 'dark:text-neutral-100']">
+{{ state.reaction || '-' }}
+        </pre>
+      </div>
+      <div :class="['grid', 'gap-2']">
+        <div :class="['text-[11px]', 'uppercase', 'tracking-[0.06em]', 'text-neutral-400', 'dark:text-neutral-500']">
+          Commands
+        </div>
+        <div v-if="state.commands.length" :class="['grid', 'gap-2']">
+          <div
+            v-for="(command, index) in state.commands"
+            :key="command.commandId ?? `${entryId}-${index}`"
+            :class="[
+              'rounded-lg',
+              'border',
+              'border-neutral-200/70',
+              'bg-white/80',
+              'p-3',
+              'dark:border-neutral-800/80',
+              'dark:bg-neutral-950/60',
+              'grid',
+              'gap-2',
+            ]"
+          >
+            <div :class="['text-xs', 'font-semibold', 'text-neutral-700', 'dark:text-neutral-200']">
+              Command {{ index + 1 }}
+            </div>
+            <div v-if="buildSparkCommandPreview(command).length" :class="['grid', 'gap-2', 'sm:grid-cols-2']">
+              <div
+                v-for="item in buildSparkCommandPreview(command)"
+                :key="`${entryId}-${index}-${item.label}`"
+                :class="[
+                  'rounded-lg',
+                  'border',
+                  'border-neutral-200/70',
+                  'bg-white/80',
+                  'p-2.5',
+                  'dark:border-neutral-800/80',
+                  'dark:bg-neutral-900/70',
+                ]"
+              >
+                <div :class="['text-[11px]', 'uppercase', 'tracking-[0.06em]', 'text-neutral-400', 'dark:text-neutral-500']">
+                  {{ item.label }}
+                </div>
+                <pre :class="['mt-1.5', 'max-h-32', 'overflow-auto', 'whitespace-pre-wrap', 'break-words', 'text-xs', 'font-mono', 'text-neutral-800', 'dark:text-neutral-100']">
+{{ item.value || '-' }}
+                </pre>
+              </div>
+            </div>
+            <div v-else :class="['text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
+              No command details available.
+            </div>
+          </div>
+        </div>
+        <div v-else :class="['text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
+          No commands returned.
+        </div>
+      </div>
+    </div>
+    <div v-else :class="['text-xs', 'text-neutral-500', 'dark:text-neutral-400']">
+      No spark:notify handling data yet.
+    </div>
+  </div>
+</template>
diff --git a/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-stream.vue b/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-stream.vue
new file mode 100644
index 000000000..78311f9b9
--- /dev/null
+++ b/packages/stage-pages/src/pages/devtools/context-flow/components/context-flow-stream.vue
@@ -0,0 +1,64 @@
+<script setup lang="ts">
+import type { FlowEntry, SparkNotifyEntryState } from '../context-flow-types'
+
+import { Input } from '@proj-airi/ui'
+import { nextTick, ref, watch } from 'vue'
+
+import ContextFlowEntryCard from './context-flow-entry-card.vue'
+
+const props = defineProps<{
+  entries: FlowEntry[]
+  getSparkNotifyState: (entry: FlowEntry) => SparkNotifyEntryState | undefined
+}>()
+
+const filterText = defineModel<string>('filterText', { required: true })
+
+const streamContainer = ref<HTMLDivElement>()
+
+async function scrollToTop() {
+  await nextTick()
+  if (streamContainer.value)
+    streamContainer.value.scrollTop = 0
+}
+
+watch(() => props.entries.length, scrollToTop)
+watch(() => filterText.value, scrollToTop)
+</script>
+
+<template>
+  <div :class="['flex', 'flex-col', 'gap-2']">
+    <div :class="['flex']">
+      <Input
+        v-model="filterText"
+        placeholder="Search type, source, text..."
+      />
+    </div>
+    <div
+      ref="streamContainer"
+      :class="[
+        'max-h-[60vh]',
+        'min-h-[360px]',
+        'overflow-y-auto',
+        'rounded-lg',
+        'bg-white/70',
+        'p-3',
+        'dark:bg-neutral-950/50',
+      ]"
+    >
+      <div
+        v-if="!entries.length"
+        :class="['h-full', 'w-full', 'flex', 'items-center', 'justify-center', 'text-sm', 'text-neutral-500', 'dark:text-neutral-400']"
+      >
+        No data yet. Trigger a chat, send a context update, or enable broadcast capture.
+      </div>
+      <div v-else v-auto-animate :class="['grid', 'gap-3']">
+        <ContextFlowEntryCard
+          v-for="entry in entries"
+          :key="entry.id"
+          :entry="entry"
+          :spark-notify-state="getSparkNotifyState(entry)"
+        />
+      </div>
+    </div>
+  </div>
+</template>
diff --git a/packages/stage-pages/src/pages/devtools/context-flow/composables/use-context-flow-formatters.test.ts b/packages/stage-pages/src/pages/devtools/context-flow/composables/use-context-flow-formatters.test.ts
new file mode 100644
index 000000000..d5c7aa313
--- /dev/null
+++ b/packages/stage-pages/src/pages/devtools/context-flow/composables/use-context-flow-formatters.test.ts
@@ -0,0 +1,37 @@
+import type { FlowEntry } from '../context-flow-types'
+
+import { describe, expect, it } from 'vitest'
+
+import { useContextFlowFormatters } from './use-context-flow-formatters'
+
+describe('useContextFlowFormatters', () => {
+  const { buildPreviewItems, formatDestinations } = useContextFlowFormatters()
+
+  it('formats destinations consistently', () => {
+    expect(formatDestinations(['alpha', 'beta'])).toBe('alpha, beta')
+    expect(formatDestinations('single')).toBe('single')
+  })
+
+  it('builds preview items for context updates', () => {
+    const entry: FlowEntry = {
+      id: 1,
+      timestamp: Date.now(),
+      direction: 'incoming',
+      channel: 'server',
+      type: 'context:update',
+      summary: 'test',
+      payload: {
+        data: {
+          text: 'Hello world',
+          destinations: ['character'],
+        },
+      },
+      searchText: '',
+    }
+
+    const items = buildPreviewItems(entry)
+    expect(items.map(item => item.label)).toEqual(['Text', 'Destinations'])
+    expect(items[0]?.value).toContain('Hello world')
+    expect(items[1]?.value).toContain('character')
+  })
+})
diff --git a/packages/stage-pages/src/pages/devtools/context-flow/composables/use-context-flow-formatters.ts b/packages/stage-pages/src/pages/devtools/context-flow/composables/use-context-flow-formatters.ts
new file mode 100644
index 000000000..7c8860e0f
--- /dev/null
+++ b/packages/stage-pages/src/pages/devtools/context-flow/composables/use-context-flow-formatters.ts
@@ -0,0 +1,244 @@
+import type { WebSocketEvents } from '@proj-airi/server-sdk'
+
+import type { FlowChannel, FlowDirection, FlowEntry, PreviewItem } from '../context-flow-types'
+
+const previewMaxLength = 420
+
+function truncateText(value: string, limit = 160) {
+  if (value.length <= limit)
+    return value
+  return `${value.slice(0, limit)}...`
+}
+
+function formatDestinations(destinations: unknown) {
+  if (!destinations)
+    return ''
+  if (Array.isArray(destinations))
+    return destinations.join(', ')
+  if (typeof destinations === 'string')
+    return destinations
+  try {
+    return JSON.stringify(destinations)
+  }
+  catch {
+    return String(destinations)
+  }
+}
+
+function getPayloadData(entry: FlowEntry) {
+  const payload = entry.payload as Record<string, any> | undefined
+  if (!payload)
+    return undefined
+  return payload.data ?? payload
+}
+
+function getEventSource(entry: FlowEntry) {
+  const payload = entry.payload as Record<string, any> | undefined
+  if (!payload)
+    return undefined
+  return payload.source as string | undefined
+}
+
+function summarizeContextUpdate(update: { text?: string, content?: unknown, destinations?: unknown }) {
+  const summaryParts: string[] = []
+  if (update.text) {
+    summaryParts.push(`text="${truncateText(update.text, 120)}"`)
+  }
+  if (update.content !== undefined) {
+    const contentText = typeof update.content === 'string'
+      ? update.content
+      : (() => {
+          try {
+            return JSON.stringify(update.content)
+          }
+          catch {
+            return '[unserializable]'
+          }
+        })()
+    summaryParts.push(`content="${truncateText(contentText, 120)}"`)
+  }
+  if (update.destinations !== undefined) {
+    summaryParts.push(`destinations="${truncateText(formatDestinations(update.destinations), 120)}"`)
+  }
+  return summaryParts.join(' ')
+}
+
+function toPreviewValue(value: unknown) {
+  if (value === undefined || value === null)
+    return ''
+  if (typeof value === 'string')
+    return value
+  try {
+    return JSON.stringify(value, null, 2)
+  }
+  catch {
+    return String(value)
+  }
+}
+
+function formatPreviewValue(value: unknown) {
+  const text = toPreviewValue(value)
+  if (!text)
+    return ''
+  return truncateText(text, previewMaxLength)
+}
+
+function getContextUpdatePreview(entry: FlowEntry) {
+  const candidate = getPayloadData(entry) as Record<string, any> | undefined
+  if (!candidate || (candidate.text === undefined && candidate.content === undefined && candidate.destinations === undefined))
+    return null
+  return {
+    text: candidate.text as string | undefined,
+    content: candidate.content as unknown,
+    destinations: candidate.destinations as unknown,
+  }
+}
+
+function buildPreviewItems(entry: FlowEntry): PreviewItem[] {
+  const items: PreviewItem[] = []
+  const contextPreview = getContextUpdatePreview(entry)
+  if (contextPreview) {
+    if (contextPreview.text) {
+      items.push({ label: 'Text', value: formatPreviewValue(contextPreview.text) })
+    }
+    if (contextPreview.content !== undefined) {
+      items.push({ label: 'Content', value: formatPreviewValue(contextPreview.content) })
+    }
+    if (contextPreview.destinations !== undefined) {
+      items.push({ label: 'Destinations', value: formatPreviewValue(formatDestinations(contextPreview.destinations)) })
+    }
+    return items
+  }
+
+  const payload = getPayloadData(entry) as Record<string, any> | undefined
+  if (payload?.destinations !== undefined) {
+    items.push({ label: 'Destinations', value: formatPreviewValue(formatDestinations(payload.destinations)) })
+  }
+  if (entry.type.startsWith('spark:')) {
+    if (payload?.headline)
+      items.push({ label: 'Headline', value: formatPreviewValue(payload.headline) })
+    if (payload?.state)
+      items.push({ label: 'State', value: formatPreviewValue(payload.state) })
+    if (payload?.intent)
+      items.push({ label: 'Intent', value: formatPreviewValue(payload.intent) })
+  }
+  if (payload?.messageText) {
+    items.push({ label: 'Message', value: formatPreviewValue(payload.messageText) })
+  }
+  else if (payload?.literal) {
+    items.push({ label: 'Token', value: formatPreviewValue(payload.literal) })
+  }
+  else if (payload?.special) {
+    items.push({ label: 'Token', value: formatPreviewValue(payload.special) })
+  }
+  else if (payload?.message) {
+    items.push({ label: 'Message', value: formatPreviewValue(payload.message) })
+  }
+  else if (payload?.name && entry.type === 'module:announce') {
+    items.push({ label: 'Module', value: formatPreviewValue(payload.name) })
+  }
+  else if (payload?.text) {
+    items.push({ label: 'Text', value: formatPreviewValue(payload.text) })
+  }
+  else if (payload?.transcription) {
+    items.push({ label: 'Transcription', value: formatPreviewValue(payload.transcription) })
+  }
+  else if (entry.summary) {
+    items.push({ label: 'Summary', value: formatPreviewValue(entry.summary) })
+  }
+
+  return items
+}
+
+function buildSparkCommandPreview(command: WebSocketEvents['spark:command']): PreviewItem[] {
+  const items: PreviewItem[] = []
+  if (command.intent)
+    items.push({ label: 'Intent', value: formatPreviewValue(command.intent) })
+  if (command.priority)
+    items.push({ label: 'Priority', value: formatPreviewValue(command.priority) })
+  if (command.interrupt !== undefined)
+    items.push({ label: 'Interrupt', value: formatPreviewValue(command.interrupt) })
+  if (command.destinations?.length)
+    items.push({ label: 'Destinations', value: formatPreviewValue(formatDestinations(command.destinations)) })
+  if (command.ack)
+    items.push({ label: 'Ack', value: formatPreviewValue(command.ack) })
+  if (command.guidance !== undefined)
+    items.push({ label: 'Guidance', value: formatPreviewValue(command.guidance) })
+  if (command.contexts !== undefined)
+    items.push({ label: 'Contexts', value: formatPreviewValue(command.contexts) })
+  return items
+}
+
+function formatTimestamp(value: number) {
+  const date = new Date(value)
+  return date.toLocaleTimeString('en-US', { hour12: false })
+}
+
+function formatPayload(payload: unknown) {
+  if (payload === undefined)
+    return '-'
+  if (typeof payload === 'string')
+    return payload
+  try {
+    return JSON.stringify(payload, null, 2)
+  }
+  catch {
+    return String(payload)
+  }
+}
+
+function directionBadgeClasses(direction: FlowDirection) {
+  if (direction === 'incoming') {
+    return [
+      'bg-complementary-500/15',
+      'text-complementary-600',
+      'dark:text-complementary-300',
+      'border-complementary-500/30',
+    ]
+  }
+  return [
+    'bg-primary-500/15',
+    'text-primary-600',
+    'dark:text-primary-300',
+    'border-primary-500/30',
+  ]
+}
+
+function directionIconClass(direction: FlowDirection) {
+  return direction === 'incoming' ? 'i-solar:arrow-down-linear' : 'i-solar:arrow-up-linear'
+}
+
+function channelBadgeClasses(channel: FlowChannel) {
+  switch (channel) {
+    case 'server':
+      return ['bg-orange-500/15', 'text-orange-600', 'dark:text-orange-300', 'border-orange-500/30']
+    case 'broadcast':
+      return ['bg-violet-500/15', 'text-violet-600', 'dark:text-violet-300', 'border-violet-500/30']
+    case 'chat':
+      return ['bg-lime-500/15', 'text-lime-600', 'dark:text-lime-300', 'border-lime-500/30']
+    default:
+      return ['bg-neutral-400/15', 'text-neutral-600', 'dark:text-neutral-300', 'border-neutral-500/30']
+  }
+}
+
+function sourceBadgeClasses() {
+  return ['bg-neutral-400/15', 'text-neutral-600', 'dark:text-neutral-300', 'border-neutral-500/30']
+}
+
+export function useContextFlowFormatters() {
+  return {
+    buildPreviewItems,
+    buildSparkCommandPreview,
+    channelBadgeClasses,
+    directionBadgeClasses,
+    directionIconClass,
+    formatDestinations,
+    formatPayload,
+    formatTimestamp,
+    getEventSource,
+    getPayloadData,
+    sourceBadgeClasses,
+    summarizeContextUpdate,
+    truncateText,
+  }
+}
diff --git a/packages/stage-pages/src/pages/devtools/context-flow/context-flow-types.ts b/packages/stage-pages/src/pages/devtools/context-flow/context-flow-types.ts
new file mode 100644
index 000000000..63f3358c9
--- /dev/null
+++ b/packages/stage-pages/src/pages/devtools/context-flow/context-flow-types.ts
@@ -0,0 +1,33 @@
+import type { WebSocketEvents } from '@proj-airi/server-sdk'
+
+type Optional<T> = T | undefined
+
+export type FlowDirection = 'incoming' | 'outgoing'
+export type FlowChannel = 'server' | 'broadcast' | 'chat' | 'devtools'
+
+export interface FlowEntry {
+  id: number
+  timestamp: number
+  direction: FlowDirection
+  channel: FlowChannel
+  type: string
+  summary?: string
+  payload?: unknown
+  searchText: string
+}
+
+export interface PreviewItem {
+  label: string
+  value: string
+}
+
+export interface SparkNotifyEntryState {
+  eventId: string
+  sparkId?: string
+  handling: boolean
+  commands: WebSocketEvents['spark:command'][]
+  reaction: string
+  startedAt: number
+  endedAt?: number
+  error?: Optional<string>
+}
diff --git a/packages/stage-pages/src/pages/devtools/context-flow/index.vue b/packages/stage-pages/src/pages/devtools/context-flow/index.vue
new file mode 100644
index 000000000..99057edc1
--- /dev/null
+++ b/packages/stage-pages/src/pages/devtools/context-flow/index.vue
@@ -0,0 +1,584 @@
+<script setup lang="ts">
+import type { WebSocketBaseEvent, WebSocketEvents } from '@proj-airi/server-sdk'
+import type { ChatStreamEvent, ContextMessage } from '@proj-airi/stage-ui/types/chat'
+
+import type { FlowDirection, FlowEntry, SparkNotifyEntryState } from './context-flow-types'
+
+import { errorMessageFrom } from '@moeru/std'
+import { ContextUpdateStrategy } from '@proj-airi/server-sdk'
+import { useCharacterStore } from '@proj-airi/stage-ui/stores/character'
+import { useCharacterOrchestratorStore } from '@proj-airi/stage-ui/stores/character-orchestrator'
+import { CHAT_STREAM_CHANNEL_NAME, CONTEXT_CHANNEL_NAME, useChatStore } from '@proj-airi/stage-ui/stores/chat'
+import { useModsServerChannelStore } from '@proj-airi/stage-ui/stores/mods/api/channel-server'
+import { Callout } from '@proj-airi/ui'
+import { useBroadcastChannel } from '@vueuse/core'
+import { nanoid } from 'nanoid'
+import { computed, onMounted, onUnmounted, ref, watch } from 'vue'
+import { toast } from 'vue-sonner'
+
+import ContextFlowActions from './components/context-flow-actions.vue'
+import ContextFlowFilters from './components/context-flow-filters.vue'
+import ContextFlowStream from './components/context-flow-stream.vue'
+
+import { useContextFlowFormatters } from './composables/use-context-flow-formatters'
+
+type DirectionFilter = 'all' | FlowDirection
+
+const {
+  formatDestinations,
+  getPayloadData,
+  summarizeContextUpdate,
+  truncateText,
+} = useContextFlowFormatters()
+
+const chatStore = useChatStore()
+const characterStore = useCharacterStore()
+const characterOrchestratorStore = useCharacterOrchestratorStore()
+const serverChannelStore = useModsServerChannelStore()
+
+const entries = ref<FlowEntry[]>([])
+const showIncoming = ref(true)
+const showOutgoing = ref(true)
+const showServer = ref(true)
+const showBroadcast = ref(false)
+const showChat = ref(false)
+const showDevtools = ref(false)
+const filterText = ref('')
+const maxEntries = ref('200')
+
+const testPayload = ref('{"type":"coding:context","data":{"file":{"path":"README.md"}}}')
+const testStrategy = ref<ContextUpdateStrategy>(ContextUpdateStrategy.ReplaceSelf)
+
+const testSparkNotifyPayload = ref(JSON.stringify({
+  kind: 'ping',
+  urgency: 'immediate',
+  headline: 'Minecraft entity `zombie` attacked you, health dropped 2 points.',
+  note: 'Triggered from minecraft',
+  destinations: ['character'],
+  payload: {
+    message: 'Hello from Context Flow devtools',
+  },
+}, null, 2))
+
+const directionFilter = ref<DirectionFilter>('all')
+
+const sparkNotifyStates = ref<Map<string, SparkNotifyEntryState>>(new Map())
+
+const maxEntriesValue = computed(() => {
+  const parsed = Number.parseInt(maxEntries.value, 10)
+  if (!Number.isFinite(parsed))
+    return 200
+  return Math.min(Math.max(parsed, 50), 1000)
+})
+
+const filteredEntries = computed(() => {
+  const query = filterText.value.trim().toLowerCase()
+  const filtered = entries.value.filter((entry) => {
+    if (directionFilter.value !== 'all' && entry.direction !== directionFilter.value)
+      return false
+    if (!showIncoming.value && entry.direction === 'incoming')
+      return false
+    if (!showOutgoing.value && entry.direction === 'outgoing')
+      return false
+    if (!showServer.value && entry.channel === 'server')
+      return false
+    if (!showBroadcast.value && entry.channel === 'broadcast')
+      return false
+    if (!showChat.value && entry.channel === 'chat')
+      return false
+    if (!showDevtools.value && entry.channel === 'devtools')
+      return false
+    if (!query)
+      return true
+    return entry.searchText.includes(query)
+  })
+  return filtered.slice().reverse()
+})
+
+function normalizePayload(payload: unknown) {
+  try {
+    return JSON.parse(JSON.stringify(payload)) as unknown
+  }
+  catch {
+    return payload
+  }
+}
+
+function getSparkNotifyReaction(eventId: string) {
+  const reactions = characterStore.reactions
+  for (let index = reactions.length - 1; index >= 0; index -= 1) {
+    const reaction = reactions[index]
+    if (reaction.sourceEventId === eventId)
+      return reaction
+  }
+  return undefined
+}
+
+function getSparkNotifyEntryState(entry: FlowEntry) {
+  if (entry.type !== 'spark:notify')
+    return undefined
+  const payload = getPayloadData(entry) as { id?: string } | undefined
+  if (!payload?.id)
+    return undefined
+  return sparkNotifyStates.value.get(payload.id)
+}
+
+function setSparkNotifyState(nextState: SparkNotifyEntryState) {
+  const nextMap = new Map(sparkNotifyStates.value)
+  nextMap.set(nextState.eventId, nextState)
+  sparkNotifyStates.value = nextMap
+}
+
+function updateSparkNotifyState(eventId: string, updater: (state: SparkNotifyEntryState) => SparkNotifyEntryState) {
+  const current = sparkNotifyStates.value.get(eventId)
+  if (!current)
+    return
+  setSparkNotifyState(updater(current))
+}
+
+function summarizeServerEvent(event: { type: string, data: Record<string, any> }) {
+  switch (event.type) {
+    case 'module:announce':
+      return `name=${event.data.name} events=${event.data.possibleEvents?.length ?? 0}`
+    case 'spark:notify':
+      return [
+        event.data.headline ? `headline="${truncateText(String(event.data.headline), 120)}"` : '',
+        event.data.destinations ? `destinations="${truncateText(formatDestinations(event.data.destinations), 120)}"` : '',
+      ].filter(Boolean).join(' ')
+    case 'spark:emit':
+      return [
+        event.data.state ? `state=${event.data.state}` : '',
+        event.data.destinations ? `destinations="${truncateText(formatDestinations(event.data.destinations), 120)}"` : '',
+      ].filter(Boolean).join(' ')
+    case 'spark:command':
+      return [
+        event.data.intent ? `intent=${event.data.intent}` : '',
+        event.data.priority ? `priority=${event.data.priority}` : '',
+        event.data.destinations ? `destinations="${truncateText(formatDestinations(event.data.destinations), 120)}"` : '',
+      ].filter(Boolean).join(' ')
+    default:
+      if (event.data.text)
+        return `text="${truncateText(String(event.data.text), 120)}"`
+      if (event.data.transcription)
+        return `transcription="${truncateText(String(event.data.transcription), 120)}"`
+      return ''
+  }
+}
+
+function buildSearchText(entry: Omit<FlowEntry, 'searchText'>) {
+  const payloadText = typeof entry.payload === 'string'
+    ? entry.payload
+    : (() => {
+        try {
+          return JSON.stringify(entry.payload)
+        }
+        catch {
+          return ''
+        }
+      })()
+  return [
+    entry.direction,
+    entry.channel,
+    entry.type,
+    entry.summary ?? '',
+    payloadText,
+  ].join(' ').toLowerCase()
+}
+
+let entryId = 0
+function pushEntry(entry: Omit<FlowEntry, 'id' | 'timestamp' | 'searchText'>) {
+  const normalizedPayload = normalizePayload(entry.payload)
+  const nextEntry: FlowEntry = {
+    ...entry,
+    id: entryId++,
+    timestamp: Date.now(),
+    payload: normalizedPayload,
+    searchText: '',
+  }
+  nextEntry.searchText = buildSearchText(nextEntry)
+
+  entries.value.push(nextEntry)
+  if (entries.value.length > maxEntriesValue.value)
+    entries.value.splice(0, entries.value.length - maxEntriesValue.value)
+}
+
+function clearEntries() {
+  entries.value = []
+}
+
+function sendTestContextUpdate() {
+  const text = testPayload.value.trim()
+  if (!text)
+    return
+
+  serverChannelStore.sendContextUpdate({
+    strategy: testStrategy.value,
+    text,
+  })
+
+  pushEntry({
+    direction: 'outgoing',
+    channel: 'devtools',
+    type: 'context:update',
+    summary: `strategy=${testStrategy.value} length=${text.length}`,
+    payload: { strategy: testStrategy.value, text },
+  })
+}
+
+async function sendTestSparkNotify() {
+  const raw = testSparkNotifyPayload.value.trim()
+  if (!raw)
+    return
+
+  let parsed: any
+  try {
+    parsed = JSON.parse(raw)
+  }
+  catch (err) {
+    toast(`Invalid spark:notify: ${errorMessageFrom(err)}`)
+    return
+  }
+
+  const destinations = Array.isArray(parsed?.destinations) ? parsed.destinations.filter((d: unknown) => typeof d === 'string') : []
+  if (!parsed?.headline || !destinations.length) {
+    toast('Missing required fields (headline, destinations[]) for spark:notify')
+    return
+  }
+
+  // TODO(@nekomeowww): improve server event, support to have zod or valibot schema validation for better cross runtime handling
+  const notify = {
+    id: typeof parsed.id === 'string' && parsed.id ? parsed.id : nanoid(),
+    eventId: typeof parsed.eventId === 'string' && parsed.eventId ? parsed.eventId : nanoid(),
+    lane: typeof parsed.lane === 'string' ? parsed.lane : undefined,
+    kind: parsed.kind === 'alarm' || parsed.kind === 'ping' || parsed.kind === 'reminder' ? parsed.kind : 'ping',
+    urgency: parsed.urgency === 'immediate' || parsed.urgency === 'soon' || parsed.urgency === 'later' ? parsed.urgency : 'immediate',
+    headline: String(parsed.headline),
+    note: typeof parsed.note === 'string' ? parsed.note : undefined,
+    payload: parsed.payload && typeof parsed.payload === 'object' ? parsed.payload : undefined,
+    ttlMs: typeof parsed.ttlMs === 'number' ? parsed.ttlMs : undefined,
+    requiresAck: typeof parsed.requiresAck === 'boolean' ? parsed.requiresAck : undefined,
+    destinations,
+    metadata: parsed.metadata && typeof parsed.metadata === 'object' ? parsed.metadata : undefined,
+  }
+
+  const simulatedEvent: WebSocketBaseEvent<'spark:notify', WebSocketEvents['spark:notify']> = {
+    type: 'spark:notify',
+    source: 'devtools',
+    data: notify,
+  }
+
+  pushEntry({
+    direction: 'incoming',
+    channel: 'server',
+    type: 'spark:notify',
+    summary: summarizeServerEvent(simulatedEvent as any),
+    payload: simulatedEvent,
+  })
+
+  try {
+    setSparkNotifyState({
+      eventId: notify.id,
+      sparkId: notify.eventId,
+      handling: true,
+      commands: [],
+      reaction: '',
+      startedAt: Date.now(),
+    })
+
+    const result = await characterOrchestratorStore.handleSparkNotify(simulatedEvent)
+    const reaction = getSparkNotifyReaction(notify.id)
+    updateSparkNotifyState(notify.id, current => ({
+      ...current,
+      sparkId: notify.eventId,
+      handling: false,
+      commands: result?.commands ?? [],
+      reaction: reaction?.message ?? '',
+      endedAt: Date.now(),
+    }))
+
+    if (result?.commands?.length) {
+      for (const command of result.commands) {
+        serverChannelStore.send({
+          type: 'spark:command',
+          data: command,
+        })
+      }
+    }
+  }
+  catch (error) {
+    toast(`Error handling spark:notify: ${errorMessageFrom(error)}`)
+    updateSparkNotifyState(notify.id, current => ({
+      ...current,
+      handling: false,
+      endedAt: Date.now(),
+      error: errorMessageFrom(error),
+    }))
+  }
+}
+
+const { data: incomingContext } = useBroadcastChannel<ContextMessage, ContextMessage>({
+  name: CONTEXT_CHANNEL_NAME,
+})
+const { data: incomingStreamEvent } = useBroadcastChannel<ChatStreamEvent, ChatStreamEvent>({
+  name: CHAT_STREAM_CHANNEL_NAME,
+})
+
+const cleanupFns: Array<() => void> = []
+
+onMounted(() => {
+  cleanupFns.push(serverChannelStore.onContextUpdate((event) => {
+    pushEntry({
+      direction: 'incoming',
+      channel: 'server',
+      type: event.type,
+      summary: [
+        `source=${event.source}`,
+        `strategy=${event.data.strategy}`,
+        summarizeContextUpdate(event.data),
+      ].filter(Boolean).join(' '),
+      payload: event,
+    })
+  }))
+
+  const serverEventTypes = [
+    'module:announce',
+    'module:configure',
+    'module:authenticated',
+    'error',
+    'spark:notify',
+    'spark:emit',
+    'spark:command',
+    'input:text',
+    'input:text:voice',
+    'output:gen-ai:chat:message',
+    'output:gen-ai:chat:complete',
+    'output:gen-ai:chat:tool-call',
+  ] as const
+
+  for (const type of serverEventTypes) {
+    cleanupFns.push(serverChannelStore.onEvent(type, (event) => {
+      if (event.type === 'spark:notify') {
+        const eventId = (event as WebSocketBaseEvent<'spark:notify', WebSocketEvents['spark:notify']>).data?.id
+        if (eventId && !sparkNotifyStates.value.has(eventId)) {
+          const sparkId = (event as WebSocketBaseEvent<'spark:notify', WebSocketEvents['spark:notify']>).data?.eventId
+          setSparkNotifyState({
+            eventId,
+            sparkId,
+            handling: true,
+            commands: [],
+            reaction: '',
+            startedAt: Date.now(),
+          })
+        }
+      }
+
+      pushEntry({
+        direction: 'incoming',
+        channel: 'server',
+        type: event.type,
+        summary: summarizeServerEvent(event as any),
+        payload: event,
+      })
+    }))
+  }
+
+  cleanupFns.push(
+    chatStore.onBeforeMessageComposed(async (message, context) => {
+      pushEntry({
+        direction: 'outgoing',
+        channel: 'chat',
+        type: 'before-compose',
+        summary: truncateText(message),
+        payload: { message, context },
+      })
+    }),
+    chatStore.onAfterMessageComposed(async (message, context) => {
+      pushEntry({
+        direction: 'outgoing',
+        channel: 'chat',
+        type: 'after-compose',
+        summary: truncateText(message),
+        payload: { message, context },
+      })
+    }),
+    chatStore.onBeforeSend(async (message, context) => {
+      pushEntry({
+        direction: 'outgoing',
+        channel: 'chat',
+        type: 'before-send',
+        summary: truncateText(message),
+        payload: { message, context },
+      })
+    }),
+    chatStore.onAfterSend(async (message, context) => {
+      pushEntry({
+        direction: 'outgoing',
+        channel: 'chat',
+        type: 'after-send',
+        summary: truncateText(message),
+        payload: { message, context },
+      })
+    }),
+    chatStore.onTokenLiteral(async (literal, context) => {
+      pushEntry({
+        direction: 'outgoing',
+        channel: 'chat',
+        type: 'token-literal',
+        summary: truncateText(literal, 80),
+        payload: { literal, context },
+      })
+    }),
+    chatStore.onTokenSpecial(async (special, context) => {
+      pushEntry({
+        direction: 'outgoing',
+        channel: 'chat',
+        type: 'token-special',
+        summary: truncateText(special, 80),
+        payload: { special, context },
+      })
+    }),
+    chatStore.onStreamEnd(async (context) => {
+      pushEntry({
+        direction: 'outgoing',
+        channel: 'chat',
+        type: 'stream-end',
+        summary: 'stream completed',
+        payload: { context },
+      })
+    }),
+    chatStore.onAssistantResponseEnd(async (message, context) => {
+      pushEntry({
+        direction: 'outgoing',
+        channel: 'chat',
+        type: 'assistant-end',
+        summary: truncateText(message),
+        payload: { message, context },
+      })
+    }),
+    chatStore.onAssistantMessage(async (message, messageText, context) => {
+      pushEntry({
+        direction: 'outgoing',
+        channel: 'chat',
+        type: 'assistant-message',
+        summary: truncateText(messageText),
+        payload: { message, messageText, context },
+      })
+    }),
+    chatStore.onChatTurnComplete(async (chat, context) => {
+      pushEntry({
+        direction: 'outgoing',
+        channel: 'chat',
+        type: 'chat-turn-complete',
+        summary: truncateText(chat.outputText),
+        payload: { chat, context },
+      })
+    }),
+  )
+})
+
+watch(incomingContext, (event) => {
+  if (!event)
+    return
+
+  pushEntry({
+    direction: 'incoming',
+    channel: 'broadcast',
+    type: 'context:broadcast',
+    summary: [
+      `source=${event.source}`,
+      `strategy=${event.strategy}`,
+      summarizeContextUpdate(event),
+    ].filter(Boolean).join(' '),
+    payload: event,
+  })
+})
+
+watch(incomingStreamEvent, (event) => {
+  if (!event)
+    return
+
+  pushEntry({
+    direction: 'incoming',
+    channel: 'broadcast',
+    type: `stream:${event.type}`,
+    summary: event.type === 'token-literal'
+      ? truncateText(event.literal, 80)
+      : event.type === 'token-special'
+        ? truncateText(event.special, 80)
+        : event.type === 'assistant-message'
+          ? truncateText(event.messageText ?? '', 120)
+          : `session=${event.sessionId}`,
+    payload: event,
+  })
+})
+
+watch(() => characterStore.reactions.length, () => {
+  for (const state of sparkNotifyStates.value.values()) {
+    if (state.reaction)
+      continue
+    const reaction = getSparkNotifyReaction(state.eventId)
+    if (!reaction)
+      continue
+    updateSparkNotifyState(state.eventId, current => ({
+      ...current,
+      reaction: reaction.message,
+      handling: false,
+      endedAt: current.endedAt ?? Date.now(),
+    }))
+  }
+})
+
+watch(maxEntriesValue, () => {
+  if (entries.value.length > maxEntriesValue.value)
+    entries.value.splice(0, entries.value.length - maxEntriesValue.value)
+})
+
+onUnmounted(() => {
+  for (const cleanup of cleanupFns)
+    cleanup()
+})
+</script>
+
+<template>
+  <div :class="['flex', 'flex-col', 'gap-6']">
+    <Callout label="Context Flow">
+      Inspect incoming context updates (server + broadcast) and outgoing chat hooks in real time. Use this to verify
+      how plugin context (e.g. VSCode coding context) travels into the chat pipeline and out to server events.
+    </Callout>
+
+    <div :class="['grid', 'gap-6', 'lg:grid-cols-[360px_1fr]']">
+      <ContextFlowFilters
+        v-model:direction-filter="directionFilter"
+        v-model:show-incoming="showIncoming"
+        v-model:show-outgoing="showOutgoing"
+        v-model:show-server="showServer"
+        v-model:show-broadcast="showBroadcast"
+        v-model:show-chat="showChat"
+        v-model:show-devtools="showDevtools"
+        v-model:max-entries="maxEntries"
+        @clear="clearEntries"
+      />
+
+      <div :class="['flex', 'flex-col', 'gap-2']">
+        <ContextFlowActions
+          v-model:test-strategy="testStrategy"
+          v-model:test-payload="testPayload"
+          v-model:test-spark-notify-payload="testSparkNotifyPayload"
+          @send-context-update="sendTestContextUpdate"
+          @send-spark-notify="sendTestSparkNotify"
+        />
+
+        <ContextFlowStream
+          v-model:filter-text="filterText"
+          :entries="filteredEntries"
+          :get-spark-notify-state="getSparkNotifyEntryState"
+        />
+      </div>
+    </div>
+  </div>
+</template>
+
+<route lang="yaml">
+meta:
+  layout: settings
+</route>