diff --git a/.gitignore b/.gitignore
index de62549..7377e04 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,7 @@
 node_modules/
 .env
 *.log
-scripts/
\ No newline at end of file
+scripts/
+.omx/
+updates/
+!updates/index.html
\ No newline at end of file
diff --git a/admin-web/index.html b/admin-web/index.html
index 3168d2c..8c01456 100644
--- a/admin-web/index.html
+++ b/admin-web/index.html
@@ -624,14 +624,15 @@
     </div>
 
     <script>
-      const ALL_MODES = ['chat', 'clarify', 'cowork', 'create', 'video', 'code']
+      const ALL_MODES = ['chat', 'clarify', 'cowork', 'create', 'video', 'code', 'like']
       const MODE_LABELS = {
         chat: '对话',
         clarify: '澄清',
         cowork: '协作',
         create: '创作',
         video: '视频',
-        code: '代码'
+        code: '代码',
+        like: 'Like视频制作'
       }
       let token = localStorage.getItem('admin_token') || ''
       const containerEl = document.querySelector('.container')
diff --git a/routes/auth.js b/routes/auth.js
index 5209c30..108f14f 100644
--- a/routes/auth.js
+++ b/routes/auth.js
@@ -22,7 +22,7 @@ const WHITELIST_EMAILS = (process.env.WHITELIST_EMAILS || '')
   .map((e) => e.trim().toLowerCase())
   .filter(Boolean)
 
-const ALL_MODES = ['chat', 'clarify', 'cowork', 'create', 'video', 'code']
+const ALL_MODES = ['chat', 'clarify', 'cowork', 'create', 'video', 'code', 'like']
 
 function getDefaultPermissions() {
   return {
diff --git a/routes/chat.js b/routes/chat.js
index a2d0485..bc1d744 100644
--- a/routes/chat.js
+++ b/routes/chat.js
@@ -13,6 +13,115 @@ const AGENT_ONLY_BLOCK_TYPES = new Set([
   'server_tool_use',
   'web_search_tool_result'
 ])
+const MAX_AGENT_STATE_BYTES = 512 * 1024
+const MAX_APPROVED_TOOL_NAMES = 300
+const MAX_COMPLETED_SUBAGENTS = 120
+const MAX_SUBAGENT_HISTORY = 240
+const MAX_SUBAGENT_TOOL_CALLS = 120
+const MAX_TEXT_CHARS = 12_000
+
+function clampText(value, max = MAX_TEXT_CHARS) {
+  if (typeof value !== 'string') return ''
+  if (value.length <= max) return value
+  return value.slice(0, max)
+}
+
+function asPlainObject(value) {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) return null
+  return value
+}
+
+function sanitizeUsage(value) {
+  const obj = asPlainObject(value)
+  if (!obj) return undefined
+  const out = {}
+  if (typeof obj.inputTokens === 'number') out.inputTokens = obj.inputTokens
+  if (typeof obj.outputTokens === 'number') out.outputTokens = obj.outputTokens
+  if (typeof obj.totalTokens === 'number') out.totalTokens = obj.totalTokens
+  return Object.keys(out).length > 0 ? out : undefined
+}
+
+function sanitizeToolCall(value) {
+  const obj = asPlainObject(value)
+  if (!obj || typeof obj.id !== 'string') return null
+  return {
+    id: obj.id,
+    name: typeof obj.name === 'string' ? obj.name : 'UnknownTool',
+    status: typeof obj.status === 'string' ? obj.status : 'completed',
+    input: obj.input,
+    output: obj.output,
+    error: typeof obj.error === 'string' ? clampText(obj.error, 2_000) : undefined,
+    startedAt: typeof obj.startedAt === 'number' ? obj.startedAt : Date.now(),
+    completedAt: typeof obj.completedAt === 'number' ? obj.completedAt : Date.now()
+  }
+}
+
+function sanitizeSubAgent(value, sessionId) {
+  const obj = asPlainObject(value)
+  if (!obj || typeof obj.toolUseId !== 'string') return null
+  const toolCalls = Array.isArray(obj.toolCalls)
+    ? obj.toolCalls.map(sanitizeToolCall).filter(Boolean).slice(-MAX_SUBAGENT_TOOL_CALLS)
+    : []
+  return {
+    name: typeof obj.name === 'string' ? clampText(obj.name, 200) : 'task',
+    toolUseId: obj.toolUseId,
+    sessionId,
+    isRunning: !!obj.isRunning,
+    iteration: Number.isFinite(obj.iteration) ? Number(obj.iteration) : 0,
+    toolCalls,
+    streamingText: clampText(typeof obj.streamingText === 'string' ? obj.streamingText : ''),
+    resultOutput: clampText(typeof obj.resultOutput === 'string' ? obj.resultOutput : ''),
+    usage: sanitizeUsage(obj.usage),
+    error: typeof obj.error === 'string' ? clampText(obj.error, 2_000) : undefined,
+    startedAt: typeof obj.startedAt === 'number' ? obj.startedAt : Date.now(),
+    completedAt: typeof obj.completedAt === 'number' ? obj.completedAt : null
+  }
+}
+
+function sanitizeAgentState(value, sessionId) {
+  const obj = asPlainObject(value) ?? {}
+  const completedSubAgentsIn = asPlainObject(obj.completedSubAgents) ?? {}
+  const completedEntries = Object.entries(completedSubAgentsIn).slice(-MAX_COMPLETED_SUBAGENTS)
+  const completedSubAgents = {}
+  for (const [key, raw] of completedEntries) {
+    const parsed = sanitizeSubAgent(raw, sessionId)
+    if (parsed) completedSubAgents[key] = parsed
+  }
+
+  const history = Array.isArray(obj.subAgentHistory)
+    ? obj.subAgentHistory
+        .map((raw) => sanitizeSubAgent(raw, sessionId))
+        .filter(Boolean)
+        .slice(-MAX_SUBAGENT_HISTORY)
+    : []
+
+  const approvedToolNames = Array.isArray(obj.approvedToolNames)
+    ? obj.approvedToolNames
+        .filter((name) => typeof name === 'string')
+        .map((name) => clampText(name, 200))
+        .slice(-MAX_APPROVED_TOOL_NAMES)
+    : []
+
+  const sessionMemoryInjectionBySession = {}
+  const memoryObj = asPlainObject(obj.sessionMemoryInjectionBySession)
+  const row = memoryObj ? asPlainObject(memoryObj[sessionId]) : null
+  if (row) {
+    sessionMemoryInjectionBySession[sessionId] = {
+      snapshotVersion: typeof row.snapshotVersion === 'string' ? row.snapshotVersion : null,
+      snapshotUpdatedAt:
+        typeof row.snapshotUpdatedAt === 'number' ? row.snapshotUpdatedAt : Date.now(),
+      scope: row.scope === 'daily' ? 'daily' : 'user',
+      injectedAt: typeof row.injectedAt === 'number' ? row.injectedAt : Date.now()
+    }
+  }
+
+  return {
+    completedSubAgents,
+    subAgentHistory: history,
+    approvedToolNames,
+    sessionMemoryInjectionBySession
+  }
+}
 
 function stripContentForUserView(contentStr) {
   if (typeof contentStr !== 'string') return contentStr
@@ -50,12 +159,14 @@ function mapMessageDoc(doc, view) {
 function registerChatRoutes(app, db, authRoutes) {
   const sessionsCol = db.collection('chat_sessions')
   const messagesCol = db.collection('chat_messages')
+  const agentStateCol = db.collection('chat_session_agent_state')
 
   const withAuth = (handler) => (req, res) => {
     authRoutes.verifyToken(req, res, () => handler(req, res))
   }
 
   const userObjectId = (req) => new ObjectId(req.user.id)
+  const getOwnedSession = (uid, sessionId) => sessionsCol.findOne({ _id: sessionId, user_id: uid })
   const assertModeAllowed = (req, res, mode) => {
     if (!mode) return true
     if (authRoutes.isModeAllowed(req.user, mode)) return true
@@ -194,6 +305,7 @@ function registerChatRoutes(app, db, authRoutes) {
         const uid = userObjectId(req)
         const id = req.params.id
         await messagesCol.deleteMany({ session_id: id, user_id: uid })
+        await agentStateCol.deleteOne({ session_id: id, user_id: uid })
         const r = await sessionsCol.deleteOne({ _id: id, user_id: uid })
         if (r.deletedCount === 0) {
           return res.status(404).json({ success: false, error: 'Session not found' })
@@ -218,7 +330,7 @@ function registerChatRoutes(app, db, authRoutes) {
         const limit = Math.min(parseInt(req.query.limit, 10) || 200, 500)
         const offset = Math.max(parseInt(req.query.offset, 10) || 0, 0)
 
-        const sess = await sessionsCol.findOne({ _id: sessionId, user_id: uid })
+        const sess = await getOwnedSession(uid, sessionId)
         if (!sess) {
           return res.status(404).json({ success: false, error: 'Session not found' })
         }
@@ -248,7 +360,7 @@ function registerChatRoutes(app, db, authRoutes) {
         const uid = userObjectId(req)
         const sessionId = req.params.id
         const m = req.body || {}
-        const sess = await sessionsCol.findOne({ _id: sessionId, user_id: uid })
+        const sess = await getOwnedSession(uid, sessionId)
         if (!sess) {
           return res.status(404).json({ success: false, error: 'Session not found' })
         }
@@ -339,6 +451,108 @@ function registerChatRoutes(app, db, authRoutes) {
     })
   )
 
+  // --- Agent State (session scoped) ---
+  app.get(
+    '/api/chat/sessions/:id/agent-state',
+    withAuth(async (req, res) => {
+      try {
+        const uid = userObjectId(req)
+        const sessionId = req.params.id
+        const sess = await getOwnedSession(uid, sessionId)
+        if (!sess) {
+          return res.status(404).json({ success: false, error: 'Session not found' })
+        }
+        const doc = await agentStateCol.findOne({ session_id: sessionId, user_id: uid })
+        res.json({
+          success: true,
+          state: doc?.state ?? null,
+          revision: typeof doc?.revision === 'number' ? doc.revision : 0,
+          updated_at: typeof doc?.updated_at === 'number' ? doc.updated_at : null
+        })
+      } catch (err) {
+        console.error('[Chat] get agent state:', err)
+        res.status(500).json({ success: false, error: err.message })
+      }
+    })
+  )
+
+  app.put(
+    '/api/chat/sessions/:id/agent-state',
+    withAuth(async (req, res) => {
+      try {
+        const uid = userObjectId(req)
+        const sessionId = req.params.id
+        const sess = await getOwnedSession(uid, sessionId)
+        if (!sess) {
+          return res.status(404).json({ success: false, error: 'Session not found' })
+        }
+        const body = req.body || {}
+        const baseRevision =
+          typeof body.base_revision === 'number' && Number.isFinite(body.base_revision)
+            ? body.base_revision
+            : null
+        const sanitized = sanitizeAgentState(body.state, sessionId)
+        const estimatedSize = Buffer.byteLength(JSON.stringify(sanitized), 'utf8')
+        if (estimatedSize > MAX_AGENT_STATE_BYTES) {
+          return res.status(413).json({
+            success: false,
+            error: `agent state too large (${estimatedSize} bytes)`
+          })
+        }
+
+        const existing = await agentStateCol.findOne({ session_id: sessionId, user_id: uid })
+        const currentRevision = typeof existing?.revision === 'number' ? existing.revision : 0
+        if (baseRevision !== null && baseRevision !== currentRevision) {
+          return res.status(409).json({
+            success: false,
+            error: 'Revision conflict',
+            revision: currentRevision,
+            state: existing?.state ?? null
+          })
+        }
+
+        const nextRevision = currentRevision + 1
+        const now = Date.now()
+        await agentStateCol.updateOne(
+          { session_id: sessionId, user_id: uid },
+          {
+            $set: {
+              session_id: sessionId,
+              user_id: uid,
+              state: sanitized,
+              revision: nextRevision,
+              updated_at: now
+            }
+          },
+          { upsert: true }
+        )
+        res.json({ success: true, revision: nextRevision, updated_at: now })
+      } catch (err) {
+        console.error('[Chat] put agent state:', err)
+        res.status(500).json({ success: false, error: err.message })
+      }
+    })
+  )
+
+  app.delete(
+    '/api/chat/sessions/:id/agent-state',
+    withAuth(async (req, res) => {
+      try {
+        const uid = userObjectId(req)
+        const sessionId = req.params.id
+        const sess = await getOwnedSession(uid, sessionId)
+        if (!sess) {
+          return res.status(404).json({ success: false, error: 'Session not found' })
+        }
+        await agentStateCol.deleteOne({ session_id: sessionId, user_id: uid })
+        res.json({ success: true })
+      } catch (err) {
+        console.error('[Chat] delete agent state:', err)
+        res.status(500).json({ success: false, error: err.message })
+      }
+    })
+  )
+
   app.delete(
     '/api/chat/sessions/:id/messages/all',
     withAuth(async (req, res) => {
@@ -364,9 +578,12 @@ function registerChatRoutes(app, db, authRoutes) {
 async function ensureChatIndexes(db) {
   const sessionsCol = db.collection('chat_sessions')
   const messagesCol = db.collection('chat_messages')
+  const agentStateCol = db.collection('chat_session_agent_state')
   await sessionsCol.createIndex({ user_id: 1, updated_at: -1 })
   await messagesCol.createIndex({ session_id: 1, sort_order: 1 })
   await messagesCol.createIndex({ user_id: 1, session_id: 1 })
+  await agentStateCol.createIndex({ user_id: 1, session_id: 1 }, { unique: true })
+  await agentStateCol.createIndex({ updated_at: -1 })
 }
 
 module.exports = { registerChatRoutes, ensureChatIndexes }
diff --git a/server.js b/server.js
index a38847f..280a430 100644
--- a/server.js
+++ b/server.js
@@ -157,7 +157,7 @@ function normalizeTagList(tags) {
   return out
 }
 
-const ROOT_MODE_TAGS = ['clarify', 'cowork', 'create', 'video', 'code']
+const ROOT_MODE_TAGS = ['clarify', 'cowork', 'create', 'video', 'code', 'like']
 
 function getAllowedModeTagsFromUser(user) {
   if (user?.is_root_admin) {