```

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/Archive/ArchiveListView.swift

@@ -23,9 +23,12 @@ struct ArchiveListView: View {
     @Query(sort: \MetricReminder.updatedAt, order: .reverse)
     private var metricReminders: [MetricReminder]
 
+    @Query(sort: \Medication.updatedAt, order: .reverse)
+    private var medications: [Medication]
+
     /// 记录页内的 push 目的地。用单个 `navigationDestination(item:)` 驱动——
     /// 多个 `navigationDestination(isPresented:)` 并存时 SwiftUI 行为未定义(会误触发)。
-    private enum Route: Hashable { case exports, reminders }
+    private enum Route: Hashable { case exports, reminders, medicationLibrary }
 
     @State private var filter: TimelineKind? = nil
     @State private var endingSymptom: Symptom?
@@ -33,57 +36,73 @@ struct ArchiveListView: View {
     @State private var selectedGroup: IndicatorGroup?
     @State private var route: Route?
 
+    /// 顶部搜索:点放大镜展开搜索框,按条目标题(指标/报告/症状/日记名)实时过滤,与分类 chip 叠加。
+    @State private var searching = false
+    @State private var query = ""
+
     @MainActor
     private var allEntries: [TimelineEntry] {
         let mapped =
-            TimelineEntry.from(indicators: indicators) +
+            TimelineEntry.aggregatedIndicators(indicators) +
             reports.map(TimelineEntry.from(report:)) +
             diaries.map(TimelineEntry.from(diary:)) +
             symptoms.map(TimelineEntry.from(symptom:))
-        let filtered = filter.map { kind in mapped.filter { $0.kind == kind } } ?? mapped
-        return filtered.sorted { $0.date > $1.date }
+        let byKind = filter.map { kind in mapped.filter { $0.kind == kind } } ?? mapped
+        let q = query.trimmingCharacters(in: .whitespaces)
+        let byQuery = q.isEmpty ? byKind : byKind.filter { $0.title.localizedCaseInsensitiveContains(q) }
+        return byQuery.sorted { $0.date > $1.date }
     }
 
-    private var grouped: [(section: DateSection, items: [TimelineEntry])] {
-        TimelineGrouping.group(allEntries)
-    }
-
-    private var totalCount: Int { allEntries.count }
-
     var body: some View {
         NavigationStack {
             content
                 .navigationDestination(item: $route) { route in
                     switch route {
-                    case .exports:   HealthExportListView()
-                    case .reminders: RemindersListView()
+                    case .exports:           HealthExportListView()
+                    case .reminders:         RemindersListView()
+                    case .medicationLibrary: MedicationLibraryView()
                     }
                 }
         }
     }
 
     private var content: some View {
-        VStack(alignment: .leading, spacing: 0) {
-            header
+        // 聚合(含血压配对 O(m²))+ 分类/搜索过滤在一次 body 内只算一次。原先 .isEmpty、分组、
+        // 计数各调一遍 allEntries,等于全表聚合三次;搜索时每次按键都翻三倍,这里收敛成一次。
+        let entries = allEntries
+        let groups = TimelineGrouping.group(entries)
+        return VStack(alignment: .leading, spacing: 0) {
+            header(total: entries.count)
                 .padding(.horizontal, 20)
                 .padding(.top, 8)
                 .padding(.bottom, 14)
 
             if reminderTotal > 0 {
                 reminderBoard
+                    .padding(.horizontal, 20)
+                    .padding(.bottom, 10)
+            }
+
+            // 药品库入口:始终显示——它是「管理常用药」的浏览/管理目的地,空库时也要能找到来添加。
+            medicationBoard
+                .padding(.horizontal, 20)
+                .padding(.bottom, 14)
+
+            filterChips
+                .padding(.bottom, searching ? 10 : 14)
+
+            if searching {
+                searchField
                     .padding(.horizontal, 20)
                     .padding(.bottom, 14)
             }
 
-            filterChips
-                .padding(.bottom, 14)
-
-            if allEntries.isEmpty {
+            if entries.isEmpty {
                 emptyState
             } else {
                 ScrollView(showsIndicators: false) {
                     LazyVStack(alignment: .leading, spacing: 18, pinnedViews: [.sectionHeaders]) {
-                        ForEach(grouped, id: \.section) { group in
+                        ForEach(groups, id: \.section) { group in
                             Section {
                                 VStack(spacing: 10) {
                                     ForEach(group.items) { entry in
@@ -149,12 +168,12 @@ struct ArchiveListView: View {
                                diaries: diaries, symptoms: symptoms)
     }
 
-    private var header: some View {
+    private func header(total: Int) -> some View {
         HStack(alignment: .lastTextBaseline) {
             Text("记录")
                 .font(.tjTitle(26))
                 .foregroundStyle(Tj.Palette.text)
-            Text(totalCount == 0 ? "" : String(appLoc: "\(totalCount) 条"))
+            Text(total == 0 ? "" : String(appLoc: "\(total) 条"))
                 .font(.tjScaled( 12))
                 .foregroundStyle(Tj.Palette.text3)
             Spacer()
@@ -173,9 +192,57 @@ struct ArchiveListView: View {
                 }
                 .buttonStyle(.plain)
             }
+            searchToggle
         }
     }
 
+    private var searchToggle: some View {
+        Button {
+            withAnimation(.easeInOut(duration: 0.18)) {
+                searching.toggle()
+                if !searching { query = "" }
+            }
+        } label: {
+            Image(systemName: searching ? "xmark" : "magnifyingglass")
+                .font(.tjScaled( 14, weight: .semibold))
+                .foregroundStyle(Tj.Palette.text)
+                .frame(width: 32, height: 32)
+                .background(Circle().fill(Tj.Palette.sand2))
+        }
+        .buttonStyle(.plain)
+        .accessibilityLabel(searching ? String(appLoc: "关闭搜索") : String(appLoc: "搜索记录"))
+    }
+
+    private var searchField: some View {
+        HStack(spacing: 8) {
+            Image(systemName: "magnifyingglass")
+                .font(.tjScaled( 13))
+                .foregroundStyle(Tj.Palette.text3)
+            TextField(String(appLoc: "搜索指标 / 报告 / 症状名"), text: $query)
+                .textInputAutocapitalization(.never)
+                .autocorrectionDisabled()
+                .foregroundStyle(Tj.Palette.text)
+                .tint(Tj.Palette.ink)
+            if !query.isEmpty {
+                Button { query = "" } label: {
+                    Image(systemName: "xmark.circle.fill")
+                        .foregroundStyle(Tj.Palette.text3)
+                }
+                .buttonStyle(.plain)
+            }
+        }
+        .padding(.horizontal, 12)
+        .padding(.vertical, 10)
+        .background(
+            RoundedRectangle(cornerRadius: Tj.Radius.sm, style: .continuous)
+                .fill(Tj.Palette.paper)
+        )
+        .overlay(
+            RoundedRectangle(cornerRadius: Tj.Radius.sm, style: .continuous)
+                .strokeBorder(Tj.Palette.line, lineWidth: 1)
+        )
+    }
+
     // MARK: - 提醒任务汇总卡
 
     /// 两类提醒(自由 + 指标记录)合计,含已关闭。
@@ -241,6 +308,58 @@ struct ArchiveListView: View {
         .buttonStyle(.plain)
     }
 
+    // MARK: - 药品库入口卡
+
+    /// 主标题:空库「药品库」,有药「药品库 · N 种常用药」。
+    private var medicationCountLabel: String {
+        medications.isEmpty
+            ? String(appLoc: "药品库")
+            : String(appLoc: "药品库 · \(medications.count) 种常用药")
+    }
+
+    /// 副标题:空库给引导文案;有药取前 3 个药名预览(药名是用户数据,不本地化)。
+    private var medicationPreviewLine: String {
+        if medications.isEmpty { return String(appLoc: "拍药盒或手动添加常用药") }
+        let names = medications.prefix(3).map(\.name).joined(separator: " · ")
+        return medications.count > 3 ? names + " …" : names
+    }
+
+    /// 点击进药品库(MedicationLibraryView,push 形态)统一管理;卡片本身只展示。
+    private var medicationBoard: some View {
+        Button { route = .medicationLibrary } label: {
+            HStack(spacing: 12) {
+                ZStack {
+                    Circle().fill(medications.isEmpty ? Tj.Palette.sand2 : Tj.Palette.leafSoft)
+                    Image(systemName: "pills.fill")
+                        .font(.tjScaled( 16))
+                        .foregroundStyle(medications.isEmpty ? Tj.Palette.text3 : Tj.Palette.ink)
+                }
+                .frame(width: 36, height: 36)
+
+                VStack(alignment: .leading, spacing: 2) {
+                    Text(medicationCountLabel)
+                        .font(.tjScaled( 15, weight: .semibold))
+                        .foregroundStyle(Tj.Palette.text)
+                        .lineLimit(1)
+                    Text(medicationPreviewLine)
+                        .font(.tjScaled( 12))
+                        .foregroundStyle(Tj.Palette.text3)
+                        .lineLimit(1)
+                }
+
+                Spacer(minLength: 0)
+
+                Image(systemName: "chevron.right")
+                    .font(.tjScaled( 12, weight: .semibold))
+                    .foregroundStyle(Tj.Palette.text3)
+            }
+            .padding(14)
+            .contentShape(Rectangle())
+            .tjCard()
+        }
+        .buttonStyle(.plain)
+    }
+
     private var filterChips: some View {
         ScrollView(.horizontal, showsIndicators: false) {
             HStack(spacing: 8) {
@@ -291,13 +410,19 @@ struct ArchiveListView: View {
     }
 
     private var emptyState: some View {
-        VStack(spacing: 14) {
+        let q = query.trimmingCharacters(in: .whitespaces)
+        let isSearchMiss = !q.isEmpty
+        return VStack(spacing: 14) {
             Spacer()
-            TjPlaceholder(label: String(appLoc: "还没有任何记录\n点底部 + 号开始"))
+            TjPlaceholder(label: isSearchMiss
+                          ? String(appLoc: "没有匹配「\(q)」的记录")
+                          : String(appLoc: "还没有任何记录\n点底部 + 号开始"))
                 .frame(width: 240, height: 140)
-            Text(filter == nil ? String(appLoc: "记录会按时间归类显示") : String(appLoc: "这个类别下没有记录"))
-                .font(.tjScaled( 13))
-                .foregroundStyle(Tj.Palette.text3)
+            if !isSearchMiss {
+                Text(filter == nil ? String(appLoc: "记录会按时间归类显示") : String(appLoc: "这个类别下没有记录"))
+                    .font(.tjScaled( 13))
+                    .foregroundStyle(Tj.Palette.text3)
+            }
             Spacer()
         }
         .frame(maxWidth: .infinity)