feat(ui): 新增购票兑换菜单，优化输入交互与界面布局

新增new_menu中间页面，拆分首页NEW按钮为购票和兑换码两个入口
抽离通用输入渲染函数，重构线上券码和IC卡兑换页面的代码逻辑
优化输入交互，按键、退格、清空时实时更新输入显示与提示
完善键盘快捷键支持，调整部分按钮布局与显示文本
统一音频播放逻辑，仅购票时播放欢迎音效

ticketmachine.lua

@@ -1440,8 +1440,8 @@ local function showHome()
     local cx = math.floor((w - btnW) / 2) + 1
     addButton(cx, y-4, 'NEW', btnW, btnH, {colors.green, colors.white}, function()
       resetTicketFlow()
-      stopAudio(); playAudioFile('Audio/welcome.wav'); waitAudioComplete()
+      stopAudio()
-      state.page = 'departure'
+      state.page = 'new_menu'
     end)
     addButton(cx, y, 'SINGLE', btnW, btnH, {colors.blue, colors.white}, function()
       resetTicketFlow()
@@ -1452,34 +1452,48 @@ local function showHome()
       resetCardFlow('open')
       stopAudio(); state.page = 'card_home'
     end)
-    addButton(cx, y+8, 'ONLINE', btnW, btnH, {colors.cyan, colors.white}, function()
-      resetTicketFlow()
-      stopAudio(); state.page = 'online'
-    end)
   else
     local cx = math.floor((w - btnW) / 2) + 1
     addButton(x1, y-2, 'NEW', btnW, btnH, {colors.green, colors.white}, function()
       resetTicketFlow()
-      stopAudio(); playAudioFile('Audio/welcome.wav'); waitAudioComplete()
+      stopAudio()
-      state.page = 'departure'
+      state.page = 'new_menu'
     end)
     addButton(x2, y-2, 'SINGLE', btnW, btnH, {colors.blue, colors.white}, function()
       resetTicketFlow()
       stopAudio(); playAudioFile('Audio/welcome.wav'); waitAudioComplete()
       state.page = 'single_segment'
     end)
-    addButton(x1, y+2, 'CARD', btnW, btnH, {colors.orange, colors.white}, function()
+    addButton(cx, y+2, 'CARD', btnW, btnH, {colors.orange, colors.white}, function()
       resetCardFlow('open')
       stopAudio(); state.page = 'card_home'
     end)
-    addButton(x2, y+2, 'ONLINE', btnW, btnH, {colors.cyan, colors.white}, function()
-      resetTicketFlow()
-      stopAudio(); state.page = 'online'
-    end)
   end
   waitButtons()
 end
 
+local function showNewMenu()
+  while state.page == 'new_menu' do
+    drawHeader('Ticket Service', 'Buy ticket or redeem voucher')
+    Buttons = {}
+    local btnW, btnH = 16, 3
+    local cx = math.floor((w - btnW) / 2) + 1
+    local y = math.floor(h / 2) - 3
+    addButton(cx, y, 'BUY TICKET', btnW, btnH, {colors.green, colors.white}, function()
+      resetTicketFlow()
+      stopAudio(); playAudioFile('Audio/welcome.wav'); waitAudioComplete()
+      state.page = 'departure'
+    end)
+    addButton(cx, y + 4, 'REDEEM CODE', btnW, btnH, {colors.cyan, colors.white}, function()
+      resetTicketFlow()
+      stopAudio()
+      state.page = 'online'
+    end)
+    addButton(2, h-3, '<-back', 8, 3, {colors.black, colors.red}, function() state.page = 'home' end)
+    waitButtons()
+  end
+end
+
 local function showCardHome()
   while state.page == 'card_home' do
     drawHeader('IC Card Service', 'Open card or redeem online order')
@@ -1643,9 +1657,24 @@ local function showCardOnlineRedeem()
     {'Z','X','C','V','B','N','M'}
   }
 
+  local function clearLine(y)
+    termDev.setBackgroundColor(colors.black)
+    termDev.setCursorPos(1, y)
+    termDev.write(string.rep(' ', w))
+  end
+
+  local function renderInput()
+    local placeholder = code .. string.rep('_', math.max(0, 5-#code))
+    clearLine(4)
+    clearLine(5)
+    centerText(4, '[' .. placeholder .. ']', colors.yellow)
+    if msg and #msg > 0 then centerText(5, msg, msgCol) end
+  end
+
   local function submitCode()
     if #code ~= 5 then
       msg, msgCol = 'Need 5 chars', colors.red
+      renderInput()
       return
     end
     local res = fetchJSON(API_BASE .. '/public/ic-cards/orders/' .. code)
@@ -1654,17 +1683,20 @@ local function showCardOnlineRedeem()
     end
     if not (res and res.ok) then
       msg, msgCol = 'Voucher Invalid', colors.red
+      renderInput()
       return
     end
     local d = res.data or res
     local cardStatus = tostring(d.status or ''):lower()
     if d.consumed or (cardStatus ~= '' and cardStatus ~= 'pending_pickup' and isCardOrderLike(d)) then
       msg, msgCol = 'Already Used!', colors.red
+      renderInput()
       return
     end
     local cardOrder = buildCardOrderState(d, code)
     if not cardOrder then
       msg, msgCol = 'Not a card order', colors.red
+      renderInput()
       return
     end
     resetCardFlow('redeem')
@@ -1682,10 +1714,7 @@ local function showCardOnlineRedeem()
   end
 
   while state.page == 'card_online' do
-    local placeholder = code .. string.rep('_', math.max(0, 5-#code))
     drawHeader('Redeem IC Card', 'Type 5 chars then OK')
-    centerText(4, '[' .. placeholder .. ']', colors.yellow)
-    if msg and #msg > 0 then centerText(5, msg, msgCol) end
     Buttons = {}
     local keyW, keyH = (w < 44 and 2 or 3), 2
     local kbW = 10 * (keyW + 1)
@@ -1694,26 +1723,46 @@ local function showCardOnlineRedeem()
       local y, x = sY + (rIdx-1) * (keyH + 1), sX + (rIdx-1)
       for _, ch in ipairs(row) do
         addButton(x, y, ch, keyW, keyH, {colors.black, colors.white}, function()
-          if #code < 5 then code = code .. ch end
+          if #code < 5 then
+            code = code .. ch
+            msg = ''
+            renderInput()
+          end
         end)
         x = x + keyW + 1
       end
     end
     addButton(2, h-3, '<-back', 8, 3, {colors.black, colors.red}, function() state.page = 'card_home' end)
-    addButton(w-31, h-3, 'BKSP', 8, 3, {colors.black, colors.red}, function() code = code:sub(1, -2) end)
+    addButton(w-31, h-3, 'BKSP', 8, 3, {colors.black, colors.red}, function()
-    addButton(w-21, h-3, 'CLEAR', 8, 3, {colors.black, colors.red}, function() code = '' end)
-    addButton(w-11, h-3, 'OK', 10, 3, {colors.black, colors.green}, submitCode)
-    local ev, p1, p2, p3 = os.pullEvent()
-    if ev == 'mouse_click' or ev == 'monitor_touch' then
-      for _, b in ipairs(Buttons) do
-        if inRect(b, p2, p3) then clickSound(); if b.onClick then b.onClick() end; break end
-      end
-    elseif ev == 'char' and #code < 5 then
-      code = code .. tostring(p1 or ''):upper()
-    elseif ev == 'key' and p1 == keys.backspace then
       code = code:sub(1, -2)
-    elseif ev == 'key' and (p1 == keys.enter or p1 == keys.numPadEnter) then
+      msg = ''
-      submitCode()
+      renderInput()
+    end)
+    addButton(w-21, h-3, 'CLEAR', 8, 3, {colors.black, colors.red}, function()
+      code = ''
+      msg = ''
+      renderInput()
+    end)
+    addButton(w-11, h-3, 'OK', 10, 3, {colors.black, colors.green}, submitCode)
+    renderInput()
+    while state.page == 'card_online' do
+      local ev, p1, p2, p3 = os.pullEvent()
+      if ev == 'mouse_click' or ev == 'monitor_touch' then
+        for _, b in ipairs(Buttons) do
+          if inRect(b, p2, p3) then clickSound(); if b.onClick then b.onClick() end; break end
+        end
+      elseif ev == 'char' and #code < 5 then
+        code = code .. tostring(p1 or ''):upper()
+        msg = ''
+        renderInput()
+      elseif ev == 'key' and p1 == keys.backspace then
+        code = code:sub(1, -2)
+        msg = ''
+        renderInput()
+      elseif ev == 'key' and (p1 == keys.enter or p1 == keys.numPadEnter) then
+        submitCode()
+      elseif ev == 'config_updated' then
+      end
     end
   end
 end
@@ -2531,6 +2580,20 @@ local function showOnlineVoucher()
     {'Z','X','C','V','B','N','M'}
   }
   
+  local function clearLine(y)
+    termDev.setBackgroundColor(colors.black)
+    termDev.setCursorPos(1, y)
+    termDev.write(string.rep(' ', w))
+  end
+
+  local function renderInput()
+    local placeholder = code .. string.rep('_', math.max(0, 5-#code))
+    clearLine(4)
+    clearLine(5)
+    centerText(4, '[' .. placeholder .. ']', colors.yellow)
+    if msg and #msg > 0 then centerText(5, msg, msgCol) end
+  end
+
   local function submitCode()
     if #code == 5 then
       local res = fetchJSON(API_BASE .. '/public/orders/' .. code)
@@ -2540,6 +2603,7 @@ local function showOnlineVoucher()
         -- Check if already consumed
         if d.consumed then
           msg, msgCol = 'Already Used!', colors.red
+          renderInput()
           return
         end
         
@@ -2553,15 +2617,16 @@ local function showOnlineVoucher()
         state.page = 'order'
       else
         msg, msgCol = 'Voucher Invalid', colors.red
+        renderInput()
       end
+    else
+      msg, msgCol = 'Need 5 chars', colors.red
+      renderInput()
     end
   end
 
   while state.page == 'online' do
-    local placeholder = code .. string.rep('_', math.max(0, 5-#code))
     drawHeader('Enter Voucher', 'Type 5 chars then OK')
-    centerText(4, '[' .. placeholder .. ']', colors.yellow)
-    if msg and #msg > 0 then centerText(5, msg, msgCol) end
     Buttons = {}
     
     local keyW, keyH = (w < 44 and 2 or 3), 2
@@ -2571,7 +2636,13 @@ local function showOnlineVoucher()
     for rIdx, row in ipairs(rows) do
       local y, x = sY + (rIdx-1) * (keyH + 1), sX + (rIdx-1)
       for _, ch in ipairs(row) do
-        addButton(x, y, ch, keyW, keyH, {colors.black, colors.white}, function() if #code < 5 then code = code .. ch end end)
+        addButton(x, y, ch, keyW, keyH, {colors.black, colors.white}, function()
+          if #code < 5 then
+            code = code .. ch
+            msg = ''
+            renderInput()
+          end
+        end)
         x = x + keyW + 1
       end
     end
@@ -2581,27 +2652,47 @@ local function showOnlineVoucher()
     local gap = 2
     local total = bw + gap + cw + gap + ow
     local ax = math.floor((w - total) / 2) + 1
+    local smallMode = false
     if ax < 1 then
+      smallMode = true
       bw, cw, ow = 6, 6, 6
-      total = bw + 1 + cw + 1 + ow
+      gap = 1
+      total = bw + gap + cw + gap + ow
       ax = math.floor((w - total) / 2) + 1
-      addButton(math.max(1, ax), actY, 'BKSP', bw, 3, {colors.black, colors.red}, function() code = code:sub(1, -2) end)
-      addButton(math.max(1, ax) + bw + 1, actY, 'CLEAR', cw, 3, {colors.black, colors.red}, function() code = '' end)
-      addButton(math.max(1, ax) + bw + 1 + cw + 1, actY, 'OK', ow, 3, {colors.black, colors.green}, submitCode)
-    else
-      addButton(ax, actY, 'Backspace', bw, 3, {colors.black, colors.red}, function() code = code:sub(1, -2) end)
-      addButton(ax + bw + gap, actY, 'Clear', cw, 3, {colors.black, colors.red}, function() code = '' end)
-      addButton(ax + bw + gap + cw + gap, actY, 'OK', ow, 3, {colors.black, colors.green}, submitCode)
     end
+    local bx = math.max(1, ax)
+    addButton(bx, actY, smallMode and 'BKSP' or 'Backspace', bw, 3, {colors.black, colors.red}, function()
+      code = code:sub(1, -2)
+      msg = ''
+      renderInput()
+    end)
+    addButton(bx + bw + gap, actY, smallMode and 'CLEAR' or 'Clear', cw, 3, {colors.black, colors.red}, function()
+      code = ''
+      msg = ''
+      renderInput()
+    end)
+    addButton(bx + bw + gap + cw + gap, actY, 'OK', ow, 3, {colors.black, colors.green}, submitCode)
     addButton(2, h-3, '<-back', 8, 3, {colors.black, colors.red}, function() state.page = 'home' end)
-    
+
-    local ev, p1, p2, p3 = os.pullEvent()
+    renderInput()
-    if ev == 'mouse_click' or ev == 'monitor_touch' then
+    while state.page == 'online' do
-      for _, b in ipairs(Buttons) do if inRect(b, p2, p3) then clickSound(); if b.onClick then b.onClick() end; break end end
+      local ev, p1, p2, p3 = os.pullEvent()
-    elseif ev == 'char' and #code < 5 then code = code .. p1:upper()
+      if ev == 'mouse_click' or ev == 'monitor_touch' then
-    elseif ev == 'key' and p1 == keys.backspace then code = code:sub(1, -2)
+        for _, b in ipairs(Buttons) do
-    elseif ev == 'key' and (p1 == keys.enter or p1 == keys.numPadEnter) then submitCode()
+          if inRect(b, p2, p3) then clickSound(); if b.onClick then b.onClick() end; break end
-    elseif ev == 'config_updated' then
+        end
+      elseif ev == 'char' and #code < 5 then
+        code = code .. tostring(p1 or ''):upper()
+        msg = ''
+        renderInput()
+      elseif ev == 'key' and p1 == keys.backspace then
+        code = code:sub(1, -2)
+        msg = ''
+        renderInput()
+      elseif ev == 'key' and (p1 == keys.enter or p1 == keys.numPadEnter) then
+        submitCode()
+      elseif ev == 'config_updated' then
+      end
     end
   end
 end
@@ -2612,6 +2703,7 @@ end
 local function mainPageLoop()
   while true do
     if state.page == 'home' then showHome()
+    elseif state.page == 'new_menu' then showNewMenu()
     elseif state.page == 'single_segment' then showSingleSegmentSelection()
     elseif state.page == 'card_home' then showCardHome()
     elseif state.page == 'card_name' then showCardNameInput()