fix(growth,runtime,desktop): E2E 验证 4 项 Bug 修复

P1 BUG-1: SemanticScorer CJK 分词缺失导致 TF-IDF 相似度为 0
- 新增 CJK bigram 分词: "北京工作" → ["北京","京工","工作","北京工作"]
- 非CJK文本保持原有分割逻辑
- 3 个新测试: bigram 生成 + 混合文本 + CJK 相似度>0

P1 BUG-2: streamStore lifecycle:end 未记录 token 使用量
- AgentStreamDelta 增加 input_tokens/output_tokens 字段
- lifecycle:end 处理中检查并调用 addTokenUsage

P2 BUG-3: NlScheduleParser "X点半" 解析为整点
- 所有时间正则增加可选的 (半) 捕获组
- extract_minute 辅助函数: 半 → 30

P2 BUG-4: NlScheduleParser "工作日每天" 未转为 1-5
- RE_WORKDAY_EXACT 支持 (每天|每日)? 中缀
- try_workday 优先级提升至 try_every_day 之前

E2E 报告: docs/E2E_TEST_REPORT_2026_04_19.md
测试: 806 passed / 0 failed (含 9 个新增测试)

desktop/src/lib/gateway-types.ts

@@ -55,6 +55,9 @@ export interface AgentStreamDelta {
   phase?: 'start' | 'end' | 'error';
   runId?: string;
   error?: string;
+  // Token usage fields (from lifecycle:end)
+  input_tokens?: number;
+  output_tokens?: number;
   // Hand event fields
   handName?: string;
   handStatus?: string;

desktop/src/store/chat/streamStore.ts

@@ -779,6 +779,14 @@ export const useStreamStore = create<StreamState>()(
           set({ isStreaming: false, activeRunId: null });
 
           if (delta.phase === 'end') {
+            // Record token usage if present in lifecycle:end event
+            const inputTokens = delta.input_tokens;
+            const outputTokens = delta.output_tokens;
+            if (typeof inputTokens === 'number' && typeof outputTokens === 'number'
+                && inputTokens > 0 && outputTokens > 0) {
+              useMessageStore.getState().addTokenUsage(inputTokens, outputTokens);
+            }
+
             const latestMsgs = _chat?.getMessages() || [];
             const completedMsg = latestMsgs.find(m => m.id === streamingMsg.id);
             if (completedMsg?.content) {