feat: AI 提示词模块化 + AI 同意门控 + AI 草稿存储 + 意图路由 + 医疗引用知识库 + 多页面 UI 优化

- AI 提示词拆分为 markdown 模块（Prompts/global + modules + rag + router）
- 新增 AI 同意门控（用户需同意后才能使用 AI 功能）
- 新增 AI 录入草稿存储（AiEntryDraftContracts/EfAiEntryDraftStore/AiEntryDraftRecord）
- 新增 AI 意图路由（ai_intent_router）
- 新增医疗引用知识库（MedicalCitationKnowledge）
- 重构 prompt_manager 和 ai_chat_endpoints
- 优化聊天/趋势/档案/抽屉/医生端等多个页面 UI
- 新增 agent 插画和趋势指标图标资源
- 删除 HANDOFF-2026-07-17.md

backend/tests/Health.Tests/application_service_tests.cs

@@ -97,6 +97,66 @@ public sealed class ApplicationServiceTests
         Assert.Equal(1, repository.SaveCount);
     }
 
+    [Fact]
+    public async Task HealthEntryBatch_ExecutesAllMetricsWithOneSave()
+    {
+        var repository = new CapturingHealthRecordRepository();
+        var service = new HealthRecordService(repository);
+        using var arguments = JsonDocument.Parse(
+            """
+            {
+              "metrics": [
+                { "type": "blood_pressure", "systolic": 113, "diastolic": 86 },
+                { "type": "heart_rate", "heart_rate": 80 },
+                { "type": "glucose", "glucose": 5.6 }
+              ]
+            }
+            """);
+
+        var result = await HealthDataAgentHandler.Execute(
+            "record_health_data_batch",
+            arguments.RootElement,
+            Guid.NewGuid(),
+            service,
+            CancellationToken.None);
+        using var resultJson = JsonDocument.Parse(JsonSerializer.Serialize(result));
+
+        Assert.True(resultJson.RootElement.GetProperty("success").GetBoolean());
+        Assert.Equal(3, resultJson.RootElement.GetProperty("record_ids").GetArrayLength());
+        Assert.Equal(3, resultJson.RootElement.GetProperty("items").GetArrayLength());
+        Assert.Equal(3, repository.Added.Count);
+        Assert.Equal(1, repository.SaveCount);
+    }
+
+    [Fact]
+    public async Task HealthEntryBatch_IncompleteMetricBlocksWholeBatch()
+    {
+        var repository = new CapturingHealthRecordRepository();
+        var service = new HealthRecordService(repository);
+        using var arguments = JsonDocument.Parse(
+            """
+            {
+              "metrics": [
+                { "type": "blood_pressure", "systolic": 113 },
+                { "type": "heart_rate", "heart_rate": 80 }
+              ]
+            }
+            """);
+
+        var result = await HealthDataAgentHandler.Execute(
+            "record_health_data_batch",
+            arguments.RootElement,
+            Guid.NewGuid(),
+            service,
+            CancellationToken.None);
+        using var resultJson = JsonDocument.Parse(JsonSerializer.Serialize(result));
+
+        Assert.False(resultJson.RootElement.GetProperty("success").GetBoolean());
+        Assert.Contains("舒张压", resultJson.RootElement.GetProperty("message").GetString());
+        Assert.Empty(repository.Added);
+        Assert.Equal(0, repository.SaveCount);
+    }
+
     [Fact]
     public async Task HealthArchive_AiSurgeryUpdatePreservesLegacySurgery()
     {
@@ -311,6 +371,62 @@ public sealed class ApplicationServiceTests
         Assert.Equal(0, todayJson.RootElement.GetProperty("count").GetInt32());
     }
 
+    [Fact]
+    public async Task AiExerciseQuery_AuthoritativeAnswerPreservesStoredExerciseType()
+    {
+        var userId = Guid.NewGuid();
+        var today = DateOnly.FromDateTime(DateTime.UtcNow.AddHours(8));
+        var repository = new FakeExerciseRepository();
+        var plan = new ExercisePlan
+        {
+            Id = Guid.NewGuid(),
+            UserId = userId,
+            StartDate = today,
+            EndDate = today.AddDays(6),
+            ReminderTime = new TimeOnly(15, 0),
+        };
+        plan.Items.Add(new ExercisePlanItem
+        {
+            Id = Guid.NewGuid(),
+            ScheduledDate = today,
+            ExerciseType = "打篮球",
+            DurationMinutes = 30,
+        });
+        repository.SetPlan(plan);
+        var service = new ExerciseService(repository);
+        using var arguments = JsonDocument.Parse("""{"action":"query","scope":"current_plans"}""");
+
+        var result = await ExerciseAgentHandler.Execute(
+            "manage_exercise", arguments.RootElement, userId, service, CancellationToken.None);
+        using var json = JsonDocument.Parse(JsonSerializer.Serialize(result));
+        var answer = json.RootElement.GetProperty("authoritative_answer").GetString();
+
+        Assert.Contains("打篮球", answer);
+        Assert.DoesNotContain("打毽子", answer);
+        Assert.Contains("15:00", answer);
+    }
+
+    [Fact]
+    public void MedicationEntry_AcceptsPillCountAsDosage()
+    {
+        using var arguments = JsonDocument.Parse(
+            """
+            {
+              "action": "create",
+              "name": "维生素D",
+              "dosage": "1粒",
+              "frequency": "Daily",
+              "time_of_day": ["12:00"],
+              "start_date": "2026-07-27",
+              "duration_days": 3
+            }
+            """);
+
+        var validationError = MedicationAgentHandler.ValidateWriteArguments(arguments.RootElement);
+
+        Assert.Null(validationError);
+    }
+
     [Fact]
     public async Task AiExerciseQuery_RequiresExplicitScopeInsteadOfAssumingToday()
     {