feat(models): add Asset/ChatTurn, indicator-report relationship, pinned flag

按 W2 plan Task 2 落地数据模型:
- Indicator 加 report / asset / pinned 字段
- Report 加 indicators / assets @Relationship(cascade)
- DiaryEntry 加 tags
- 新增 @Model Asset (原图元数据)
- 新增 @Model ChatTurn (问答历史 + 引用)
- TijiApp Schema 加入新 model

注:Schema 破坏性变更,用户需在 Xcode 里 Erase Simulator
后重启 App。

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

体己/App/TijiApp.swift

@@ -8,6 +8,8 @@ struct TijiApp: App {
             Indicator.self,
             Report.self,
             DiaryEntry.self,
+            Asset.self,
+            ChatTurn.self,
         ])
         let config = ModelConfiguration(schema: schema, isStoredInMemoryOnly: false)
         do {

体己/Models/Models.swift

@@ -29,13 +29,20 @@ final class Indicator {
     var note: String?
     var capturedAt: Date
 
+    var report: Report?
+    var asset: Asset?
+    var pinned: Bool = false
+
     init(name: String,
          value: String,
          unit: String,
          range: String,
          status: IndicatorStatus,
          note: String? = nil,
-         capturedAt: Date = .now) {
+         capturedAt: Date = .now,
+         report: Report? = nil,
+         asset: Asset? = nil,
+         pinned: Bool = false) {
         self.name = name
         self.value = value
         self.unit = unit
@@ -43,6 +50,9 @@ final class Indicator {
         self.statusRaw = status.rawValue
         self.note = note
         self.capturedAt = capturedAt
+        self.report = report
+        self.asset = asset
+        self.pinned = pinned
     }
 
     var status: IndicatorStatus {
@@ -61,6 +71,12 @@ final class Report {
     var pageCount: Int
     var createdAt: Date
 
+    @Relationship(deleteRule: .cascade, inverse: \Indicator.report)
+    var indicators: [Indicator] = []
+
+    @Relationship(deleteRule: .cascade)
+    var assets: [Asset] = []
+
     init(title: String,
          type: ReportType,
          reportDate: Date,
@@ -88,9 +104,53 @@ final class Report {
 final class DiaryEntry {
     var content: String
     var createdAt: Date
+    var tags: [String]
 
-    init(content: String, createdAt: Date = .now) {
+    init(content: String, createdAt: Date = .now, tags: [String] = []) {
         self.content = content
         self.createdAt = createdAt
+        self.tags = tags
+    }
+}
+
+@Model
+final class Asset {
+    var relativePath: String
+    var mimeType: String
+    var bytes: Int
+    var createdAt: Date
+
+    init(relativePath: String,
+         mimeType: String = "image/jpeg",
+         bytes: Int = 0,
+         createdAt: Date = .now) {
+        self.relativePath = relativePath
+        self.mimeType = mimeType
+        self.bytes = bytes
+        self.createdAt = createdAt
+    }
+}
+
+@Model
+final class ChatTurn {
+    var question: String
+    var answer: String
+    var referencedIndicatorIDs: [String]
+    var referencedReportIDs: [String]
+    var createdAt: Date
+    var decodeRate: Double
+
+    init(question: String,
+         answer: String,
+         referencedIndicatorIDs: [String] = [],
+         referencedReportIDs: [String] = [],
+         createdAt: Date = .now,
+         decodeRate: Double = 0) {
+        self.question = question
+        self.answer = answer
+        self.referencedIndicatorIDs = referencedIndicatorIDs
+        self.referencedReportIDs = referencedReportIDs
+        self.createdAt = createdAt
+        self.decodeRate = decodeRate
     }
 }