```

feat(AI): 集成MNN推理引擎替换MLX作为主AI运行时

- 引入MNN(alibaba) + Arm SME2 + CPU作为主AI运行时，支持A19/iPhone17的
  SME2和A17的NEON加速
- 添加MLX Swift作为兜底GPU推理方案，实现双后端切换机制
- 使用单一Qwen3.5-2B多模态模型(1.2GB)，替代原有的LLM+VL分离架构
- 实现InferenceEngine.current引擎选择逻辑，真机默认MNN，模拟器回退MLX
- 更新AIAgent架构，通过MNNLLMBridge(ObjC++) → MNNBackend进行推理
- 修改队列机制防止并发推理导致OOM，使用信号量闸门控制显存占用
- 更新文档中的技术栈说明、模块边界和周次交付计划
```

康康/Features/Home/HomeView.swift

@@ -18,21 +18,19 @@ struct HomeView: View {
 
     /// 点「最近记录」某行 → 打开只读详情 sheet(与档案库 C1 同款交互)。
     @State private var selectedEntry: TimelineEntry?
+    /// 点指标行 → 打开同类聚合详情(历次翻页 + 趋势,与档案库 C1 同款)。
+    @State private var selectedGroup: IndicatorGroup?
 
     @MainActor
     private var recentEntries: [TimelineEntry] {
         let all =
-            TimelineEntry.from(indicators: indicators) +
+            TimelineEntry.aggregatedIndicators(indicators) +
             reports.map(TimelineEntry.from(report:)) +
             diaries.map(TimelineEntry.from(diary:)) +
             symptoms.map(TimelineEntry.from(symptom:))
         return all.sorted { $0.date > $1.date }.prefix(6).map { $0 }
     }
 
-    private var recentGrouped: [(section: DateSection, items: [TimelineEntry])] {
-        TimelineGrouping.group(recentEntries)
-    }
-
     var body: some View {
         ScrollView(showsIndicators: false) {
             VStack(alignment: .leading, spacing: 0) {
@@ -65,6 +63,9 @@ struct HomeView: View {
                 TimelineEntryDetailView(detail: d)
             }
         }
+        .sheet(item: $selectedGroup) { group in
+            IndicatorSeriesDetailView(group: group)
+        }
     }
 
     private var greeting: some View {
@@ -100,7 +101,10 @@ struct HomeView: View {
     }
 
     private var recentSection: some View {
-        VStack(alignment: .leading, spacing: 10) {
+        // 聚合(含血压配对 O(m²))在一次 body 内只算一次,再派生分组,避免 .isEmpty 与分组各算一遍。
+        let entries = recentEntries
+        let groups = TimelineGrouping.group(entries)
+        return VStack(alignment: .leading, spacing: 10) {
             HStack(alignment: .lastTextBaseline) {
                 Text("最近记录").font(.tjH2()).foregroundStyle(Tj.Palette.text)
                 Spacer()
@@ -112,11 +116,11 @@ struct HomeView: View {
                 .buttonStyle(.plain)
             }
 
-            if recentEntries.isEmpty {
+            if entries.isEmpty {
                 emptyRecent
             } else {
                 VStack(alignment: .leading, spacing: 14) {
-                    ForEach(recentGrouped, id: \.section) { group in
+                    ForEach(groups, id: \.section) { group in
                         VStack(alignment: .leading, spacing: 8) {
                             Text(group.section.label)
                                 .font(.tjScaled( 11, weight: .semibold))
@@ -125,12 +129,16 @@ struct HomeView: View {
                             VStack(spacing: 10) {
                                 ForEach(group.items) { entry in
                                     Button {
-                                        if TimelineDetail.resolve(
+                                        // 指标 → 同类聚合详情(历次 + 趋势);其余 → 只读详情。与档案库 C1 一致。
+                                        guard let d = TimelineDetail.resolve(
                                             for: entry,
                                             indicators: indicators, reports: reports,
                                             diaries: diaries, symptoms: symptoms
-                                        ) != nil {
-                                            selectedEntry = entry
+                                        ) else { return }
+                                        switch d {
+                                        case .indicator(let i):          selectedGroup = IndicatorGroup.of(i)
+                                        case .bloodPressure(let sys, _): selectedGroup = IndicatorGroup.of(sys)
+                                        default:                         selectedEntry = entry
                                         }
                                     } label: {
                                         TimelineRow(entry: entry)