feat(ble): 完善BLE OTA架构并优化性能

- 实现BLE OTA数据路径分离：添加ble_ota_data.cpp处理重排序/工作线程/DATA_IN，
  和ble_ota_host.cpp处理GATT/GAP/广播/主机功能
- 将滑动ACK窗口从32增大到64，实测Windows WebBT环境下固件传输速度提升约10%
  （从40KB/s提升到44KB/s），内存消耗约30KB重排序缓冲区
- 优化调试日志级别，将OTA相关信息从INFO调整为DBG以减少日志冗余

refactor(can): 改进CAN反馈监听机制

- 将CAN反馈任务从1Hz主动轮询模式改为被动事件监听模式，
  使用SpiMaster::takeEvent()替代主动发送0xC1轮询请求
- 更新相关头文件注释说明架构变更，将"周期性轮询"改为"被动接收推送"
- 修改调试日志级别，将暂停/恢复状态日志从INFO调整为DBG

tools/js/ble/verify.js

@@ -4,18 +4,18 @@ export function showBleVerifyInfo(frontSha, devSha, result) {
   var panel = document.getElementById('stageVerifyInfo');
   if (panel) { panel.className = 'stage-verify-info'; panel.style.display = 'block'; }
   if (frontSha !== undefined) {
-    var el = document.getElementById('sviFrontSha');
-    if (el) el.textContent = frontSha || '-';
+    var frontEl = document.getElementById('sviFrontSha');
+    if (frontEl) frontEl.textContent = frontSha || '-';
   }
   if (devSha !== undefined) {
-    var el = document.getElementById('sviDeviceSha');
-    if (el) el.textContent = devSha || '-';
+    var devEl = document.getElementById('sviDeviceSha');
+    if (devEl) devEl.textContent = devSha || '-';
   }
-  if (result !== undefined) {
-    var el = document.getElementById('sviResult');
-    if (el) {
-      el.textContent = result.text || '-';
-      el.className = 'svi-val' + (result.ok ? ' ok' : result.err ? ' err' : '');
+  if (result) {
+    var resultEl = document.getElementById('sviResult');
+    if (resultEl) {
+      resultEl.textContent = result.text || '-';
+      resultEl.className = 'svi-val' + (result.ok ? ' ok' : result.err ? ' err' : '');
     }
   }
 }
@@ -23,4 +23,4 @@ export function showBleVerifyInfo(frontSha, devSha, result) {
 export function hideBleVerifyInfo() {
   var panel = document.getElementById('stageVerifyInfo');
   if (panel) { panel.className = 'stage-verify-info'; panel.style.display = 'none'; }
-}
+}