fix(sessions): reset topic fulfilled state when switching sessions

Reset the topic fulfilled state when switching between sessions to ensure proper state management. Also remove redundant state update from SessionItem's onPress handler.

src/renderer/src/pages/home/Tabs/components/SessionItem.tsx

@@ -14,7 +14,7 @@ import { AgentSessionEntity } from '@renderer/types'
 import { ContextMenu, ContextMenuContent, ContextMenuItem, ContextMenuTrigger } from '@renderer/ui/context-menu'
 import { buildAgentSessionTopicId } from '@renderer/utils/agentSession'
 import { XIcon } from 'lucide-react'
-import React, { FC, memo, startTransition, useMemo, useState } from 'react'
+import React, { FC, memo, startTransition, useEffect, useMemo, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import styled from 'styled-components'
 
@@ -97,6 +97,12 @@ const SessionItem: FC<SessionItemProps> = ({ session, agentId, isDisabled, isLoa
   const isPending = useMemo(() => topicLoadingQuery[sessionTopicId], [sessionTopicId, topicLoadingQuery])
   const isFulfilled = useMemo(() => topicFulfilledQuery[sessionTopicId], [sessionTopicId, topicFulfilledQuery])
 
+  useEffect(() => {
+    if (isFulfilled && activeSessionId === session.id) {
+      dispatch(newMessagesActions.setTopicFulfilled({ topicId: sessionTopicId, fulfilled: false }))
+    }
+  }, [activeSessionId, dispatch, isFulfilled, session.id, sessionTopicId])
+
   return (
     <>
       <ContextMenu modal={false}>
@@ -104,10 +110,7 @@ const SessionItem: FC<SessionItemProps> = ({ session, agentId, isDisabled, isLoa
           <ButtonContainer
             isDisabled={isDisabled}
             isLoading={isLoading}
-            onPress={() => {
-              dispatch(newMessagesActions.setTopicFulfilled({ topicId: sessionTopicId, fulfilled: false }))
-              onPress()
-            }}
+            onPress={onPress}
             isActive={isActive}
             onDoubleClick={() => startEdit(session.name ?? '')}
             className="group">

src/renderer/src/pages/home/Tabs/components/Sessions.tsx

@@ -4,12 +4,14 @@ import { useAgent } from '@renderer/hooks/agents/useAgent'
 import { useSessions } from '@renderer/hooks/agents/useSessions'
 import { useRuntime } from '@renderer/hooks/useRuntime'
 import { useAppDispatch } from '@renderer/store'
+import { newMessagesActions } from '@renderer/store/newMessage'
 import {
   setActiveSessionIdAction,
   setActiveTopicOrSessionAction,
   setSessionWaitingAction
 } from '@renderer/store/runtime'
 import { CreateSessionForm } from '@renderer/types'
+import { buildAgentSessionTopicId } from '@renderer/utils/agentSession'
 import { AnimatePresence, motion } from 'framer-motion'
 import { Plus } from 'lucide-react'
 import { memo, useCallback, useEffect } from 'react'
@@ -80,6 +82,17 @@ const Sessions: React.FC<SessionsProps> = ({ agentId }) => {
     }
   }, [isLoading, sessions, currentActiveSessionId, agentId, setActiveSessionId])
 
+  useEffect(() => {
+    if (currentActiveSessionId) {
+      dispatch(
+        newMessagesActions.setTopicFulfilled({
+          topicId: buildAgentSessionTopicId(currentActiveSessionId),
+          fulfilled: false
+        })
+      )
+    }
+  }, [currentActiveSessionId, dispatch])
+
   if (isLoading) {
     return (
       <motion.div