diff --git a/app/static/js/app.jsx b/app/static/js/app.jsx
index 2ad3703..5bec07b 100644
--- a/app/static/js/app.jsx
+++ b/app/static/js/app.jsx
@@ -3190,6 +3190,7 @@ const App = () => {
       try {
         const profile = await window.SonicAPI.getProfile();
         setCurrentUser(profile);
+        localStorage.setItem('sonic_user', JSON.stringify(profile));
         if (profile.must_change_password) {
           setIsMandatoryLogin(true);
           setAuthMode('force_change');
@@ -3199,12 +3200,19 @@ const App = () => {
           setAuthModalOpen(false);
         }
       } catch (err) {
-        localStorage.removeItem('sonic_token');
-        localStorage.removeItem('sonic_user');
-        setCurrentUser(null);
-        setIsMandatoryLogin(true);
-        setAuthMode('login');
-        setAuthModalOpen(true);
+        const cached = localStorage.getItem('sonic_user');
+        if (cached) {
+          try { setCurrentUser(JSON.parse(cached)); } catch (_) {}
+          setIsMandatoryLogin(false);
+          setAuthModalOpen(false);
+        } else {
+          localStorage.removeItem('sonic_token');
+          localStorage.removeItem('sonic_user');
+          setCurrentUser(null);
+          setIsMandatoryLogin(true);
+          setAuthMode('login');
+          setAuthModalOpen(true);
+        }
       }
     };
     checkAuthStatus();
@@ -7470,6 +7478,45 @@ const App = () => {
         handlePlayheadSet(time);
         return { success: true, time: parseFloat(time.toFixed(3)) };
       },
+      selectItem: (args) => {
+        if (args.select_all) {
+          setSelectedTrackId(null);
+          clearLocalSelection();
+          setSelectionMode('global');
+          setSelectionStart(0);
+          const maxDur = tracks.reduce((max, t) => {
+            const dur = t.buffer ? t.buffer.duration : 0;
+            const clips = t.clips || [];
+            const clipMax = clips.reduce((m, c) => Math.max(m, (c.startTime || 0) + (c.buffer ? c.buffer.duration : 0)), 0);
+            return Math.max(max, dur, clipMax);
+          }, 0);
+          setSelectionEnd(Math.max(maxDur, currentTime + 10));
+          return { success: true, selection: 'all', duration: parseFloat(Math.max(maxDur, currentTime + 10).toFixed(3)) };
+        }
+        const tid = args.track_id || selectedTrackId;
+        const track = tracks.find(t => t.id === tid);
+        if (!track) return { success: false, error: `Track ${tid} not found` };
+        const clips = track.clips && track.clips.length > 0 ? track.clips : (track.buffer ? [{ id: 'default_' + track.id, name: track.name, buffer: track.buffer, startTime: track.startTime || 0 }] : []);
+        if (args.item_name) {
+          const match = clips.find(c => c.name && c.name.toLowerCase().includes(args.item_name.toLowerCase()));
+          if (!match) return { success: false, error: `No clip matching "${args.item_name}" on track ${track.name}` };
+          setSelectedTrackId(tid);
+          clearLocalSelection();
+          setSelectionMode('global');
+          const start = match.startTime || 0;
+          const end = start + (match.buffer ? match.buffer.duration : 2);
+          setSelectionStart(start);
+          setSelectionEnd(end);
+          return { success: true, trackId: tid, trackName: track.name, clipId: match.id, clipName: match.name, start: parseFloat(start.toFixed(3)), end: parseFloat(end.toFixed(3)) };
+        }
+        setSelectedTrackId(tid);
+        clearLocalSelection();
+        setSelectionMode('global');
+        const trackEnd = track.buffer ? track.buffer.duration : (clips.length > 0 ? Math.max(...clips.map(c => (c.startTime || 0) + (c.buffer ? c.buffer.duration : 0))) : 4);
+        setSelectionStart(0);
+        setSelectionEnd(trackEnd);
+        return { success: true, trackId: tid, trackName: track.name, duration: parseFloat(trackEnd.toFixed(3)) };
+      },
       addMarker: (args) => {
         const trackId = args.track_id || selectedTrackId;
         const time = args.time ?? currentTime;
@@ -7741,7 +7788,7 @@ const App = () => {
     onClick: () => setMenuOpen(menuOpen === menu.label ? null : menu.label),
     className: `px-3 py-1 text-xs font-medium transition rounded ${menuOpen === menu.label ? 'bg-zinc-700 text-zinc-100' : 'text-zinc-400 hover:text-zinc-200 hover:bg-zinc-800'}`
   }, menu.label), menuOpen === menu.label && /*#__PURE__*/React.createElement("div", {
-    className: "absolute top-full left-0 mt-0.5 bg-[#2a2a2a] border border-zinc-700 rounded-lg shadow-2xl py-1 w-52 z-50",
+    className: "absolute top-full left-0 mt-0.5 bg-[#2a2a2a] border border-zinc-700 rounded-lg shadow-2xl py-1 w-64 z-50",
     onClick: () => setMenuOpen(null)
   }, menu.items.map((item, i) => item.sep ? /*#__PURE__*/React.createElement("div", {
     key: i,
@@ -8892,6 +8939,23 @@ const App = () => {
           setEditNameInput(track.name);
         }
       }, track.name)), /*#__PURE__*/React.createElement("div", {
+        className: "flex flex-wrap gap-0.5 max-w-[100px] mb-0.5"
+      }, (track.clips && track.clips.length > 0 ? track.clips : track.buffer ? [{ id: 'default', name: track.name, startTime: track.startTime }] : []).slice(0, 3).map(c => /*#__PURE__*/React.createElement("span", {
+        key: c.id,
+        className: "text-[9px] font-mono text-zinc-500 bg-zinc-800/60 rounded px-0.5 truncate max-w-[90px] cursor-pointer hover:text-cyan-400 hover:bg-zinc-700",
+        title: c.name || track.name,
+        onClick: e => {
+          e.stopPropagation();
+          setSelectedTrackId(track.id);
+          clearLocalSelection();
+          setSelectionMode('global');
+          const start = c.startTime || 0;
+          const end = start + (c.buffer ? c.buffer.duration : 2);
+          setSelectionStart(start);
+          setSelectionEnd(end);
+          showToast(`Selected: ${c.name || track.name}`, 'info');
+        }
+      }, c.name || track.name))), /*#__PURE__*/React.createElement("div", {
         className: "flex items-center gap-1"
       }, /*#__PURE__*/React.createElement("button", {
         onClick: e => {
diff --git a/app/static/js/app.precompiled.js b/app/static/js/app.precompiled.js
index 68d55f8..c6b98ab 100644
--- a/app/static/js/app.precompiled.js
+++ b/app/static/js/app.precompiled.js
@@ -3190,6 +3190,7 @@ const App = () => {
       try {
         const profile = await window.SonicAPI.getProfile();
         setCurrentUser(profile);
+        localStorage.setItem('sonic_user', JSON.stringify(profile));
         if (profile.must_change_password) {
           setIsMandatoryLogin(true);
           setAuthMode('force_change');
@@ -3199,12 +3200,21 @@ const App = () => {
           setAuthModalOpen(false);
         }
       } catch (err) {
-        localStorage.removeItem('sonic_token');
-        localStorage.removeItem('sonic_user');
-        setCurrentUser(null);
-        setIsMandatoryLogin(true);
-        setAuthMode('login');
-        setAuthModalOpen(true);
+        const cached = localStorage.getItem('sonic_user');
+        if (cached) {
+          try {
+            setCurrentUser(JSON.parse(cached));
+          } catch (_) {}
+          setIsMandatoryLogin(false);
+          setAuthModalOpen(false);
+        } else {
+          localStorage.removeItem('sonic_token');
+          localStorage.removeItem('sonic_user');
+          setCurrentUser(null);
+          setIsMandatoryLogin(true);
+          setAuthMode('login');
+          setAuthModalOpen(true);
+        }
       }
     };
     checkAuthStatus();
@@ -7635,6 +7645,73 @@ const App = () => {
           time: parseFloat(time.toFixed(3))
         };
       },
+      selectItem: args => {
+        if (args.select_all) {
+          setSelectedTrackId(null);
+          clearLocalSelection();
+          setSelectionMode('global');
+          setSelectionStart(0);
+          const maxDur = tracks.reduce((max, t) => {
+            const dur = t.buffer ? t.buffer.duration : 0;
+            const clips = t.clips || [];
+            const clipMax = clips.reduce((m, c) => Math.max(m, (c.startTime || 0) + (c.buffer ? c.buffer.duration : 0)), 0);
+            return Math.max(max, dur, clipMax);
+          }, 0);
+          setSelectionEnd(Math.max(maxDur, currentTime + 10));
+          return {
+            success: true,
+            selection: 'all',
+            duration: parseFloat(Math.max(maxDur, currentTime + 10).toFixed(3))
+          };
+        }
+        const tid = args.track_id || selectedTrackId;
+        const track = tracks.find(t => t.id === tid);
+        if (!track) return {
+          success: false,
+          error: `Track ${tid} not found`
+        };
+        const clips = track.clips && track.clips.length > 0 ? track.clips : track.buffer ? [{
+          id: 'default_' + track.id,
+          name: track.name,
+          buffer: track.buffer,
+          startTime: track.startTime || 0
+        }] : [];
+        if (args.item_name) {
+          const match = clips.find(c => c.name && c.name.toLowerCase().includes(args.item_name.toLowerCase()));
+          if (!match) return {
+            success: false,
+            error: `No clip matching "${args.item_name}" on track ${track.name}`
+          };
+          setSelectedTrackId(tid);
+          clearLocalSelection();
+          setSelectionMode('global');
+          const start = match.startTime || 0;
+          const end = start + (match.buffer ? match.buffer.duration : 2);
+          setSelectionStart(start);
+          setSelectionEnd(end);
+          return {
+            success: true,
+            trackId: tid,
+            trackName: track.name,
+            clipId: match.id,
+            clipName: match.name,
+            start: parseFloat(start.toFixed(3)),
+            end: parseFloat(end.toFixed(3))
+          };
+        }
+        setSelectedTrackId(tid);
+        clearLocalSelection();
+        setSelectionMode('global');
+        const trackEnd = track.buffer ? track.buffer.duration : clips.length > 0 ? Math.max(...clips.map(c => (c.startTime || 0) + (c.buffer ? c.buffer.duration : 0))) : 4;
+        setSelectionStart(0);
+        setSelectionEnd(trackEnd);
+        return {
+          success: true,
+          trackId: tid,
+          trackName: track.name,
+          duration: parseFloat(trackEnd.toFixed(3))
+        };
+      },
       addMarker: args => {
         const trackId = args.track_id || selectedTrackId;
         const time = args.time ?? currentTime;
@@ -7928,7 +8005,7 @@ const App = () => {
     onClick: () => setMenuOpen(menuOpen === menu.label ? null : menu.label),
     className: `px-3 py-1 text-xs font-medium transition rounded ${menuOpen === menu.label ? 'bg-zinc-700 text-zinc-100' : 'text-zinc-400 hover:text-zinc-200 hover:bg-zinc-800'}`
   }, menu.label), menuOpen === menu.label && /*#__PURE__*/React.createElement("div", {
-    className: "absolute top-full left-0 mt-0.5 bg-[#2a2a2a] border border-zinc-700 rounded-lg shadow-2xl py-1 w-52 z-50",
+    className: "absolute top-full left-0 mt-0.5 bg-[#2a2a2a] border border-zinc-700 rounded-lg shadow-2xl py-1 w-64 z-50",
     onClick: () => setMenuOpen(null)
   }, menu.items.map((item, i) => item.sep ? /*#__PURE__*/React.createElement("div", {
     key: i,
@@ -9081,6 +9158,27 @@ const App = () => {
           setEditNameInput(track.name);
         }
       }, track.name)), /*#__PURE__*/React.createElement("div", {
+        className: "flex flex-wrap gap-0.5 max-w-[100px] mb-0.5"
+      }, (track.clips && track.clips.length > 0 ? track.clips : track.buffer ? [{
+        id: 'default',
+        name: track.name,
+        startTime: track.startTime
+      }] : []).slice(0, 3).map(c => /*#__PURE__*/React.createElement("span", {
+        key: c.id,
+        className: "text-[9px] font-mono text-zinc-500 bg-zinc-800/60 rounded px-0.5 truncate max-w-[90px] cursor-pointer hover:text-cyan-400 hover:bg-zinc-700",
+        title: c.name || track.name,
+        onClick: e => {
+          e.stopPropagation();
+          setSelectedTrackId(track.id);
+          clearLocalSelection();
+          setSelectionMode('global');
+          const start = c.startTime || 0;
+          const end = start + (c.buffer ? c.buffer.duration : 2);
+          setSelectionStart(start);
+          setSelectionEnd(end);
+          showToast(`Selected: ${c.name || track.name}`, 'info');
+        }
+      }, c.name || track.name))), /*#__PURE__*/React.createElement("div", {
         className: "flex items-center gap-1"
       }, /*#__PURE__*/React.createElement("button", {
         onClick: e => {
diff --git a/app/static/js/services/aiGateway.js b/app/static/js/services/aiGateway.js
index 043bf1d..3ea9321 100644
--- a/app/static/js/services/aiGateway.js
+++ b/app/static/js/services/aiGateway.js
@@ -166,6 +166,17 @@ const AIGateway = (function() {
         length_bars: { type: 'number', description: 'Độ dài vùng chọn (bar). Dùng cùng start_bar thay cho end_bar.' }
       }
     }
+  }, {
+    name: 'select_item',
+    description: 'Chọn một item/clip/sample cụ thể trên track. Nếu không có track_id và item_name thì chọn toàn bộ timeline.',
+    parameters: {
+      type: 'object',
+      properties: {
+        track_id: { type: 'string', description: 'ID của track. Nếu không có thì dùng track đang chọn.' },
+        item_name: { type: 'string', description: 'Tên của clip/sample cần chọn. VD: "Cut_Cartoon Capers Loop.mp3". Nếu không có thì chọn toàn bộ track.' },
+        select_all: { type: 'boolean', description: 'Chọn toàn bộ timeline (bỏ qua track_id và item_name)' }
+      }
+    }
   }, {
     name: 'cut_audio',
     description: 'Cắt đoạn audio đang được chọn từ track nguồn, snap zero-crossing, tạo track mới chứa đoạn cắt',
diff --git a/app/static/js/services/dawCommandDispatcher.js b/app/static/js/services/dawCommandDispatcher.js
index e32671f..72a9e37 100644
--- a/app/static/js/services/dawCommandDispatcher.js
+++ b/app/static/js/services/dawCommandDispatcher.js
@@ -63,6 +63,7 @@ const DAWCommandDispatcher = (function() {
     register('SET_SELECTION', (args) => api.setSelection(args));
     register('SET_BPM', (args) => api.setBpm(args));
     register('SET_PLAYHEAD', (args) => api.setPlayhead(args));
+    register('SELECT_ITEM', (args) => api.selectItem(args));
     register('ADD_MARKER', (args) => api.addMarker(args));
     register('CREATE_MIDI_ITEM', (args) => AIGateway.createMidiItem(args));
     register('MODIFY_MIDI_NOTES', (args) => AIGateway.modifyMidiNotes(args));
diff --git a/app/storage/sonicforge.db b/app/storage/sonicforge.db
index bf8521e..0fa4385 100644
Binary files a/app/storage/sonicforge.db and b/app/storage/sonicforge.db differ