Add smooth animations to SessionsTab and Sessions components

- Replace static conditional rendering with Framer Motion animations for no-agent and session states
- Animate session list items with staggered entrance and exit transitions
- Add loading spinner animation with fade effect
- Apply motion to session creation button with delayed entrance

src/renderer/src/pages/home/Tabs/SessionsTab.tsx

@@ -1,4 +1,5 @@
 import { useRuntime } from '@renderer/hooks/useRuntime'
+import { AnimatePresence,motion } from 'framer-motion'
 import { FC, memo } from 'react'
 
 import Sessions from './components/Sessions'
@@ -9,14 +10,29 @@ const SessionsTab: FC<SessionsTabProps> = () => {
   const { chat } = useRuntime()
   const { activeAgentId } = chat
 
-  if (!activeAgentId) {
-    return <div> No active agent.</div>
-  }
-
   return (
-    <>
-      <Sessions agentId={activeAgentId} />
-    </>
+    <AnimatePresence mode="wait">
+      {!activeAgentId ? (
+        <motion.div
+          key="no-agent"
+          initial={{ opacity: 0, y: 10 }}
+          animate={{ opacity: 1, y: 0 }}
+          exit={{ opacity: 0, y: -10 }}
+          transition={{ duration: 0.2 }}
+          className="flex h-full items-center justify-center text-foreground-500">
+          No active agent.
+        </motion.div>
+      ) : (
+        <motion.div
+          key={activeAgentId}
+          initial={{ opacity: 0, x: 20 }}
+          animate={{ opacity: 1, x: 0 }}
+          exit={{ opacity: 0, x: -20 }}
+          transition={{ duration: 0.3, ease: 'easeOut' }}>
+          <Sessions agentId={activeAgentId} />
+        </motion.div>
+      )}
+    </AnimatePresence>
   )
 }
 

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

@@ -3,6 +3,7 @@ import { SessionModal } from '@renderer/components/Popups/agent/SessionModal'
 import { useSessions } from '@renderer/hooks/agents/useSessions'
 import { useAppDispatch } from '@renderer/store'
 import { setActiveSessionIdAction, setActiveTopicOrSessionAction } from '@renderer/store/runtime'
+import { AnimatePresence,motion } from 'framer-motion'
 import { Plus } from 'lucide-react'
 import { memo, useCallback } from 'react'
 import { useTranslation } from 'react-i18next'
@@ -28,36 +29,63 @@ const Sessions: React.FC<SessionsProps> = ({ agentId }) => {
     [dispatch]
   )
 
-  if (isLoading) return <Spinner />
+  if (isLoading) {
+    return (
+      <motion.div
+        initial={{ opacity: 0 }}
+        animate={{ opacity: 1 }}
+        exit={{ opacity: 0 }}
+        className="flex h-full items-center justify-center">
+        <Spinner size="lg" />
+      </motion.div>
+    )
+  }
 
   // if (error) return
 
   return (
-    <div className="agents-tab h-full w-full p-2">
+    <motion.div
+      initial={{ opacity: 0 }}
+      animate={{ opacity: 1 }}
+      transition={{ duration: 0.3 }}
+      className="agents-tab h-full w-full p-2">
       {/* TODO: Add session button */}
-      <SessionModal
-        agentId={agentId}
-        trigger={{
-          content: (
-            <Button
-              onPress={(e) => e.continuePropagation()}
-              className="mb-2 w-full justify-start bg-transparent text-foreground-500 hover:bg-accent">
-              <Plus size={16} className="mr-1 shrink-0" />
-              {t('agent.session.add.title')}
-            </Button>
-          )
-        }}
-      />
-      {sessions.map((session) => (
-        <SessionItem
-          key={session.id}
-          session={session}
+      <motion.div
+        initial={{ opacity: 0, y: -10 }}
+        animate={{ opacity: 1, y: 0 }}
+        transition={{ duration: 0.2, delay: 0.1 }}>
+        <SessionModal
           agentId={agentId}
-          onDelete={() => deleteSession(session.id)}
-          onPress={() => setActiveSessionId(agentId, session.id)}
+          trigger={{
+            content: (
+              <Button
+                onPress={(e) => e.continuePropagation()}
+                className="mb-2 w-full justify-start bg-transparent text-foreground-500 hover:bg-accent">
+                <Plus size={16} className="mr-1 shrink-0" />
+                {t('agent.session.add.title')}
+              </Button>
+            )
+          }}
         />
-      ))}
-    </div>
+      </motion.div>
+      <AnimatePresence>
+        {sessions.map((session, index) => (
+          <motion.div
+            key={session.id}
+            initial={{ opacity: 0, x: -20 }}
+            animate={{ opacity: 1, x: 0 }}
+            exit={{ opacity: 0, x: 20, transition: { duration: 0.2 } }}
+            transition={{ duration: 0.3, delay: index * 0.05 }}>
+            <SessionItem
+              session={session}
+              agentId={agentId}
+              onDelete={() => deleteSession(session.id)}
+              onPress={() => setActiveSessionId(agentId, session.id)}
+            />
+          </motion.div>
+        ))}
+      </AnimatePresence>
+    </motion.div>
   )
 }