fix(renderer): 界面与设置页一轮修补

- FilePanel 上传进度监听器组件卸载时清理（原先只在终态/reject 时 off）
- MonitorPanel：首采即失败时显示中断错误条，不再被 meta 门挡成永远
  '采集中'
- HighlightImportExport：blob 下载延迟 revokeObjectURL（原先同步回收
  会中止下载）；FileReader 补 onerror
- HighlightTab 新建规则改 getState() 读法防 stale（对齐 replaceRule）
- ConnectionSidebar/CommandsPanel 三处删除/清空 handler 补 try/catch
  与 message.error（原先失败静默）
- highlightIO 导入信封补 version 校验、kind 缺失不再放行
- i18n：补 settings.highlight.builtin.percent 四语言键（原先唯一缺失
  的内置规则，非中文界面显示中文 note）

tests/hl-rules.mjs

@@ -15,7 +15,13 @@
 import { compileRules, applyHighlights, __testHooks as hooks } from '../src/renderer/src/terminal/highlightEngine.ts'
 import { previewSpans } from '../src/renderer/src/terminal/highlightEngine.ts'
 import { DEFAULT_HIGHLIGHT_RULES } from '../src/shared/settings.ts'
-import { exportHighlightRules, mergeRules, parseHighlightRules } from '../src/shared/highlightIO.ts'
+import {
+  exportHighlightRules,
+  HIGHLIGHT_FILE_KIND,
+  HIGHLIGHT_FILE_VERSION,
+  mergeRules,
+  parseHighlightRules
+} from '../src/shared/highlightIO.ts'
 import {
   excludedByProfile,
   rulesForProfile,
@@ -549,11 +555,26 @@ console.log('[import / export]')
     parseHighlightRules('{"kind":"openterminal.layout","rules":[]}').error === 'wrong-kind',
     'a foreign envelope is refused'
   )
+  ok(
+    parseHighlightRules('{"rules":[]}').error === 'wrong-kind',
+    'an envelope with no kind at all is refused'
+  )
+  ok(
+    parseHighlightRules(JSON.stringify({ kind: HIGHLIGHT_FILE_KIND, version: HIGHLIGHT_FILE_VERSION + 1, rules: [] }))
+      .error === 'wrong-version',
+    'an envelope from another version is refused'
+  )
+  ok(
+    parseHighlightRules(JSON.stringify({ kind: HIGHLIGHT_FILE_KIND, rules: [] })).error === 'wrong-version',
+    'an envelope with no version at all is refused'
+  )
   ok(parseHighlightRules('{"nope":1}').error === 'no-rules', 'JSON without a rules array is refused')
   ok(parseHighlightRules('[]').error === undefined, 'a bare empty array is accepted')
 
   const partial = parseHighlightRules(
     JSON.stringify({
+      kind: HIGHLIGHT_FILE_KIND,
+      version: HIGHLIGHT_FILE_VERSION,
       rules: [
         { pattern: '\\bOK\\b', priority: 500, color: { fg: 'red' } },
         { pattern: '[' },