fix(core): 代码审查修复 AI 并发/隐私/解析等多处缺陷

- AIRuntime 加 actor 内串行推理闸门,封死 LLM/VL in-flight 并发解码窄口(jetsam OOM 根因)
- prepare 的 .loading 改轮询等待消除假就绪竞态;就绪判据 isReady→isComplete 防半下载崩溃
- applyReanalyzed 重新解读时 unlink 旧 Asset,消除 Vault 孤儿图片(§6 隐私承诺)
- parseReportJSON 改 extractBalancedJSON + 裸数组兜底,防 VL 多项输出被静默截断丢指标
- 临时文件改 completeUnlessOpen 修锁屏写失败;parseDate 支持多格式防归档年份错位
- TimelineEntry/DayDetailSheet 修「偏高」文案与血压箭头方向(偏低指标不再显示相反结论)
- FileVault.wipe 容错;HealthExportSheet 异常关键词排除否定句;modelTag 取实际枚举值
- 删除 B1-B5 + ArchiveFlow 死代码(含违反 §6 的 AES 加密文案)
- 补 3 个回归测试,编译 + 测试全部通过

康康Tests/CaptureServiceJSONTests.swift

@@ -109,4 +109,28 @@ struct CaptureServiceJSONTests {
         let diff = abs(parsed.reportDate.timeIntervalSince(now))
         #expect(diff < 5)  // 5 秒内算 .now
     }
+
+    /// VL 多项时偶尔直接吐裸数组 [{...},{...}],旧实现(只认 {})会只截第一项静默丢其余。
+    @Test func parsesTopLevelArrayAsIndicators() throws {
+        let raw = """
+        [{"name":"A","value":"1","unit":"","range":"","status":"high"},
+         {"name":"B","value":"2","unit":"","range":"","status":"low"}]
+        """
+        let parsed = try CaptureService.parseReportJSON(raw)
+        #expect(parsed.indicators.count == 2)
+        #expect(parsed.indicators.first?.name == "A")
+        #expect(parsed.indicators.last?.status == .low)
+    }
+
+    /// VL 不同来源会吐 yyyy/MM/dd 等格式,不应回退到「今天」导致归档年份错位。
+    @Test func parsesSlashAndCJKDateFormats() throws {
+        for ds in ["2026/04/12", "2026.04.12", "2026年04月12日"] {
+            let raw = """
+            {"title":"t","type":"lab","report_date":"\(ds)","institution":"","page_count":1,"summary":"","indicators":[]}
+            """
+            let parsed = try CaptureService.parseReportJSON(raw)
+            let c = Calendar(identifier: .gregorian).dateComponents([.year, .month, .day], from: parsed.reportDate)
+            #expect(c.year == 2026 && c.month == 4 && c.day == 12, "格式 \(ds) 解析失败")
+        }
+    }
 }