fix(api-config): load env from app directory

apps/api/.env.example

@@ -63,3 +63,11 @@ MAIL_SMTP_PASS="replace-with-smtp-password"
 # 发件人显示名称与地址
 MAIL_FROM_NAME="TodoList"
 MAIL_FROM_ADDRESS="no-reply@example.com"
+
+# [数据加密] 服务端敏感数据加密主密钥
+# 用于加密 AI 配置、任务内容、同步 payload、附件元数据等数据库字段
+# 请使用高强度随机字符串，生产环境务必单独保管
+DATA_ENCRYPTION_SECRET="replace-with-a-long-random-secret"
+
+# [对象存储加密] 服务端对象加密策略，默认使用 AES256；如需关闭可填写 NONE
+S3_SERVER_SIDE_ENCRYPTION="AES256"

apps/api/package.json

@@ -3,12 +3,13 @@
   "version": "0.1.0",
   "description": "TodoList API service",
   "scripts": {
-    "prisma:generate": "prisma generate",
+    "prisma:generate": "node -e \"require('node:fs').rmSync('generated/prisma', { recursive: true, force: true })\" && prisma generate",
     "prisma:format": "prisma format",
     "prisma:validate": "prisma validate",
     "prebuild": "pnpm run prisma:generate",
     "pretypecheck": "pnpm run prisma:generate",
     "pretest": "pnpm run prisma:generate",
+    "data:reencrypt": "node -e \"require('node:fs').rmSync('.tmp-compile', { recursive: true, force: true })\" && tsc -p tsconfig.json --outDir .tmp-compile --noEmit false && node .tmp-compile/scripts/reencrypt-sensitive-data.js && node -e \"require('node:fs').rmSync('.tmp-compile', { recursive: true, force: true })\"",
     "start": "node dist/main.js",
     "start:dev": "ts-node-dev --respawn --transpile-only src/main.ts",
     "build": "tsc -p tsconfig.build.json",

apps/api/prisma/schema.prisma

@@ -63,7 +63,8 @@ enum NotificationStatus {
 
 model User {
   id                    String              @id @default(cuid())
-  email                 String              @unique
+  email                 String
+  emailHash             String?             @unique
   nickname              String?
   avatarUrl             String?
   status                UserStatus          @default(ACTIVE)
@@ -97,11 +98,13 @@ model AuthIdentity {
   provider       AuthProvider
   providerUserId String
   email          String?
+  emailHash      String?
   createdAt      DateTime     @default(now())
   updatedAt      DateTime     @updatedAt
   user           User         @relation(fields: [userId], references: [id], onDelete: Cascade)
 
   @@unique([provider, providerUserId])
+  @@index([emailHash])
   @@index([userId])
   @@map("auth_identities")
 }
@@ -273,6 +276,8 @@ model AiProviderBinding {
   channel         AiChannel
   providerName    String
   model           String?
+  configId        String?
+  configName      String?
   encryptedApiKey String?
   endpoint        String?
   isDefault       Boolean   @default(false)

apps/api/scripts/reencrypt-sensitive-data.ts

@@ -0,0 +1,418 @@
+import "dotenv/config";
+import { PrismaPg } from "@prisma/adapter-pg";
+import { ConfigService } from "@nestjs/config";
+import { Prisma, PrismaClient } from "../generated/prisma/client";
+import { DataEncryptionService } from "../src/security/data-encryption.service";
+
+type MigrationCounter = Record<
+  | "users"
+  | "authIdentities"
+  | "aiBindings"
+  | "publicPools"
+  | "aiUsageLogs"
+  | "tasks"
+  | "attachments"
+  | "syncOperations",
+  number
+>;
+
+function createEncryptionService(): DataEncryptionService {
+  const configService = {
+    get: (key: string) => process.env[key]
+  } as ConfigService;
+
+  return new DataEncryptionService(configService);
+}
+
+function encryptStringIfNeeded(
+  value: string | null,
+  dataEncryptionService: DataEncryptionService
+): string | null | undefined {
+  if (value === null || dataEncryptionService.isEncryptedString(value)) {
+    return undefined;
+  }
+
+  return dataEncryptionService.encryptString(value) ?? null;
+}
+
+function assignRequiredEncryptedString<T extends Record<string, unknown>, K extends keyof T>(
+  target: T,
+  key: K,
+  value: string | null | undefined
+): void {
+  if (typeof value === "string") {
+    target[key] = value as T[K];
+  }
+}
+
+function assignOptionalEncryptedString<T extends Record<string, unknown>, K extends keyof T>(
+  target: T,
+  key: K,
+  value: string | null | undefined
+): void {
+  if (value !== undefined) {
+    target[key] = value as T[K];
+  }
+}
+
+function encryptJsonIfNeeded(
+  value: Prisma.JsonValue | null,
+  dataEncryptionService: DataEncryptionService
+): Prisma.InputJsonValue | Prisma.NullableJsonNullValueInput | undefined {
+  if (value === null) {
+    return undefined;
+  }
+
+  if (typeof value === "string" && dataEncryptionService.isEncryptedString(value)) {
+    return undefined;
+  }
+
+  return (dataEncryptionService.encryptJson(value as Prisma.InputJsonValue) ?? Prisma.JsonNull) as
+    | Prisma.InputJsonValue
+    | Prisma.NullableJsonNullValueInput;
+}
+
+function resolvePlainString(
+  value: string | null,
+  dataEncryptionService: DataEncryptionService
+): string | null {
+  if (value === null) {
+    return null;
+  }
+
+  return dataEncryptionService.isEncryptedString(value)
+    ? (dataEncryptionService.decryptString(value) ?? null)
+    : value;
+}
+
+async function main(): Promise<void> {
+  if (!process.env["DATABASE_URL"]) {
+    throw new Error("缺少 DATABASE_URL，无法执行敏感数据迁移");
+  }
+
+  if (!process.env["DATA_ENCRYPTION_SECRET"]) {
+    throw new Error("缺少 DATA_ENCRYPTION_SECRET，无法执行敏感数据迁移");
+  }
+
+  const prisma = new PrismaClient({
+    adapter: new PrismaPg({
+      connectionString: process.env["DATABASE_URL"]
+    })
+  });
+  const dataEncryptionService = createEncryptionService();
+  const counter: MigrationCounter = {
+    users: 0,
+    authIdentities: 0,
+    aiBindings: 0,
+    publicPools: 0,
+    aiUsageLogs: 0,
+    tasks: 0,
+    attachments: 0,
+    syncOperations: 0
+  };
+
+  try {
+    const users = await prisma.user.findMany({
+      select: {
+        id: true,
+        email: true,
+        emailHash: true,
+        nickname: true,
+        avatarUrl: true
+      }
+    });
+
+    for (const user of users) {
+      const normalizedEmail = resolvePlainString(user.email, dataEncryptionService)?.toLowerCase();
+      if (!normalizedEmail) {
+        continue;
+      }
+      const nextEmailHash = dataEncryptionService.createLookupHash("user.email", normalizedEmail);
+      const data: Prisma.UserUpdateInput = {};
+      const email = encryptStringIfNeeded(user.email, dataEncryptionService);
+      const nickname = encryptStringIfNeeded(user.nickname, dataEncryptionService);
+      const avatarUrl = encryptStringIfNeeded(user.avatarUrl, dataEncryptionService);
+
+      assignRequiredEncryptedString(data, "email", email);
+      if (user.emailHash !== nextEmailHash) {
+        data.emailHash = nextEmailHash;
+      }
+      assignOptionalEncryptedString(data, "nickname", nickname);
+      assignOptionalEncryptedString(data, "avatarUrl", avatarUrl);
+
+      if (Object.keys(data).length === 0) {
+        continue;
+      }
+
+      await prisma.user.update({
+        where: {
+          id: user.id
+        },
+        data
+      });
+      counter.users += 1;
+    }
+
+    const authIdentities = await prisma.authIdentity.findMany({
+      select: {
+        id: true,
+        email: true,
+        emailHash: true
+      }
+    });
+
+    for (const authIdentity of authIdentities) {
+      const data: Prisma.AuthIdentityUpdateInput = {};
+      const email = encryptStringIfNeeded(authIdentity.email, dataEncryptionService);
+      const normalizedIdentityEmail = resolvePlainString(authIdentity.email, dataEncryptionService);
+      const nextEmailHash =
+        normalizedIdentityEmail === null
+          ? null
+          : dataEncryptionService.createLookupHash(
+              "auth_identity.email",
+              normalizedIdentityEmail.toLowerCase()
+            );
+
+      assignOptionalEncryptedString(data, "email", email);
+      if (authIdentity.emailHash !== nextEmailHash) {
+        data.emailHash = nextEmailHash;
+      }
+
+      if (Object.keys(data).length === 0) {
+        continue;
+      }
+
+      await prisma.authIdentity.update({
+        where: {
+          id: authIdentity.id
+        },
+        data
+      });
+      counter.authIdentities += 1;
+    }
+
+    const aiBindings = await prisma.aiProviderBinding.findMany({
+      select: {
+        id: true,
+        providerName: true,
+        model: true,
+        configId: true,
+        configName: true,
+        endpoint: true,
+        encryptedApiKey: true
+      }
+    });
+
+    for (const binding of aiBindings) {
+      const data: Prisma.AiProviderBindingUpdateInput = {};
+      const providerName = encryptStringIfNeeded(binding.providerName, dataEncryptionService);
+      const model = encryptStringIfNeeded(binding.model, dataEncryptionService);
+      const configId = encryptStringIfNeeded(binding.configId, dataEncryptionService);
+      const configName = encryptStringIfNeeded(binding.configName, dataEncryptionService);
+      const endpoint = encryptStringIfNeeded(binding.endpoint, dataEncryptionService);
+      const encryptedApiKey = encryptStringIfNeeded(binding.encryptedApiKey, dataEncryptionService);
+
+      assignRequiredEncryptedString(data, "providerName", providerName);
+      assignOptionalEncryptedString(data, "model", model);
+      assignOptionalEncryptedString(data, "configId", configId);
+      assignOptionalEncryptedString(data, "configName", configName);
+      assignOptionalEncryptedString(data, "endpoint", endpoint);
+      assignOptionalEncryptedString(data, "encryptedApiKey", encryptedApiKey);
+
+      if (Object.keys(data).length === 0) {
+        continue;
+      }
+
+      await prisma.aiProviderBinding.update({
+        where: {
+          id: binding.id
+        },
+        data
+      });
+      counter.aiBindings += 1;
+    }
+
+    const publicPools = await prisma.aiPublicPoolConfig.findMany({
+      select: {
+        id: true,
+        providerName: true,
+        model: true,
+        endpoint: true,
+        encryptedApiKey: true
+      }
+    });
+
+    for (const publicPool of publicPools) {
+      const data: Prisma.AiPublicPoolConfigUpdateInput = {};
+      const providerName = encryptStringIfNeeded(publicPool.providerName, dataEncryptionService);
+      const model = encryptStringIfNeeded(publicPool.model, dataEncryptionService);
+      const endpoint = encryptStringIfNeeded(publicPool.endpoint, dataEncryptionService);
+      const encryptedApiKey = encryptStringIfNeeded(
+        publicPool.encryptedApiKey,
+        dataEncryptionService
+      );
+
+      assignOptionalEncryptedString(data, "providerName", providerName);
+      assignOptionalEncryptedString(data, "model", model);
+      assignOptionalEncryptedString(data, "endpoint", endpoint);
+      assignOptionalEncryptedString(data, "encryptedApiKey", encryptedApiKey);
+
+      if (Object.keys(data).length === 0) {
+        continue;
+      }
+
+      await prisma.aiPublicPoolConfig.update({
+        where: {
+          id: publicPool.id
+        },
+        data
+      });
+      counter.publicPools += 1;
+    }
+
+    const aiUsageLogs = await prisma.aiUsageLog.findMany({
+      select: {
+        id: true,
+        providerName: true,
+        model: true
+      }
+    });
+
+    for (const aiUsageLog of aiUsageLogs) {
+      const data: Prisma.AiUsageLogUpdateInput = {};
+      const providerName = encryptStringIfNeeded(aiUsageLog.providerName, dataEncryptionService);
+      const model = encryptStringIfNeeded(aiUsageLog.model, dataEncryptionService);
+
+      assignOptionalEncryptedString(data, "providerName", providerName);
+      assignOptionalEncryptedString(data, "model", model);
+
+      if (Object.keys(data).length === 0) {
+        continue;
+      }
+
+      await prisma.aiUsageLog.update({
+        where: {
+          id: aiUsageLog.id
+        },
+        data
+      });
+      counter.aiUsageLogs += 1;
+    }
+
+    const tasks = await prisma.task.findMany({
+      select: {
+        id: true,
+        title: true,
+        contentJson: true,
+        contentText: true
+      }
+    });
+
+    for (const task of tasks) {
+      const data: Prisma.TaskUpdateInput = {};
+      const title = encryptStringIfNeeded(task.title, dataEncryptionService);
+      const contentJson = encryptJsonIfNeeded(task.contentJson, dataEncryptionService);
+      const contentText = encryptStringIfNeeded(task.contentText, dataEncryptionService);
+
+      assignRequiredEncryptedString(data, "title", title);
+      if (contentJson !== undefined) {
+        data.contentJson = contentJson;
+      }
+      assignOptionalEncryptedString(data, "contentText", contentText);
+
+      if (Object.keys(data).length === 0) {
+        continue;
+      }
+
+      await prisma.task.update({
+        where: {
+          id: task.id
+        },
+        data
+      });
+      counter.tasks += 1;
+    }
+
+    const attachments = await prisma.attachment.findMany({
+      select: {
+        id: true,
+        url: true,
+        fileName: true,
+        checksum: true
+      }
+    });
+
+    for (const attachment of attachments) {
+      const data: Prisma.AttachmentUpdateInput = {};
+      const url = encryptStringIfNeeded(attachment.url, dataEncryptionService);
+      const fileName = encryptStringIfNeeded(attachment.fileName, dataEncryptionService);
+      const checksum = encryptStringIfNeeded(attachment.checksum, dataEncryptionService);
+
+      assignRequiredEncryptedString(data, "url", url);
+      assignOptionalEncryptedString(data, "fileName", fileName);
+      assignOptionalEncryptedString(data, "checksum", checksum);
+
+      if (Object.keys(data).length === 0) {
+        continue;
+      }
+
+      await prisma.attachment.update({
+        where: {
+          id: attachment.id
+        },
+        data
+      });
+      counter.attachments += 1;
+    }
+
+    const syncOperations = await prisma.syncOperation.findMany({
+      select: {
+        id: true,
+        payload: true
+      }
+    });
+
+    for (const operation of syncOperations) {
+      if (operation.payload === null) {
+        continue;
+      }
+
+      let nextPayload: string | null = null;
+      if (typeof operation.payload === "string") {
+        if (dataEncryptionService.isEncryptedString(operation.payload)) {
+          continue;
+        }
+
+        nextPayload = dataEncryptionService.encryptString(operation.payload) ?? null;
+      } else {
+        nextPayload =
+          dataEncryptionService.encryptString(JSON.stringify(operation.payload)) ?? null;
+      }
+
+      if (nextPayload === null) {
+        continue;
+      }
+
+      await prisma.syncOperation.update({
+        where: {
+          id: operation.id
+        },
+        data: {
+          payload: nextPayload
+        }
+      });
+      counter.syncOperations += 1;
+    }
+
+    console.log("敏感数据迁移完成");
+    console.log(JSON.stringify(counter, null, 2));
+  } finally {
+    await prisma.$disconnect();
+  }
+}
+
+void main().catch((error: unknown) => {
+  const message = error instanceof Error ? error.message : "未知错误";
+  console.error(`敏感数据迁移失败：${message}`);
+  process.exitCode = 1;
+});

apps/api/src/ai/ai-provider-registry.service.ts

@@ -0,0 +1,28 @@
+import { Injectable } from "@nestjs/common";
+import { AiChannel } from "../../generated/prisma/client";
+import { AstrbotProvider } from "./providers/astrbot.provider";
+import { OpenAiCompatibleProvider } from "./providers/openai-compatible.provider";
+import { AiChannelExecutor } from "./ai.types";
+
+@Injectable()
+export class AiProviderRegistryService {
+  private readonly executors = new Map<AiChannel, AiChannelExecutor>();
+
+  constructor(
+    openAiCompatibleProvider: OpenAiCompatibleProvider,
+    astrbotProvider: AstrbotProvider
+  ) {
+    this.executors.set(AiChannel.USER_KEY, openAiCompatibleProvider);
+    this.executors.set(AiChannel.PUBLIC_POOL, openAiCompatibleProvider);
+    this.executors.set(AiChannel.ASTRBOT, astrbotProvider);
+  }
+
+  getExecutor(channel: AiChannel): AiChannelExecutor {
+    const executor = this.executors.get(channel);
+    if (!executor) {
+      throw new Error(`未找到 ${channel} 对应的 AI 通道执行器`);
+    }
+
+    return executor;
+  }
+}

apps/api/src/ai/ai-rate-limit.service.ts

@@ -0,0 +1,123 @@
+import { Injectable } from "@nestjs/common";
+import { ConfigService } from "@nestjs/config";
+
+type AiRateLimitBucket = {
+  count: number;
+  resetAt: number;
+};
+
+export type AiRateLimitResult =
+  | {
+      allowed: true;
+    }
+  | {
+      allowed: false;
+      reason: "USER" | "IP";
+      retryAfterMs: number;
+      limit: number;
+      windowMs: number;
+    };
+
+@Injectable()
+export class AiRateLimitService {
+  private readonly userBuckets = new Map<string, AiRateLimitBucket>();
+  private readonly ipBuckets = new Map<string, AiRateLimitBucket>();
+  private readonly windowMs: number;
+  private readonly userLimit: number;
+  private readonly ipLimit: number;
+
+  constructor(private readonly configService: ConfigService) {
+    this.windowMs = this.readPositiveInt("AI_RATE_LIMIT_WINDOW_MS", 60_000);
+    this.userLimit = this.readPositiveInt("AI_RATE_LIMIT_USER_MAX", 20);
+    this.ipLimit = this.readPositiveInt("AI_RATE_LIMIT_IP_MAX", 60);
+  }
+
+  consume(userId: string, clientIp: string | null): AiRateLimitResult {
+    const now = Date.now();
+    const userBucket = this.getBucket(this.userBuckets, userId, now);
+    if (userBucket.count >= this.userLimit) {
+      return {
+        allowed: false,
+        reason: "USER",
+        retryAfterMs: Math.max(0, userBucket.resetAt - now),
+        limit: this.userLimit,
+        windowMs: this.windowMs
+      };
+    }
+
+    const normalizedIp = this.normalizeIp(clientIp);
+    const ipBucket = normalizedIp ? this.getBucket(this.ipBuckets, normalizedIp, now) : null;
+    if (ipBucket && ipBucket.count >= this.ipLimit) {
+      return {
+        allowed: false,
+        reason: "IP",
+        retryAfterMs: Math.max(0, ipBucket.resetAt - now),
+        limit: this.ipLimit,
+        windowMs: this.windowMs
+      };
+    }
+
+    userBucket.count += 1;
+    if (ipBucket) {
+      ipBucket.count += 1;
+    }
+
+    this.cleanupExpiredBuckets(this.userBuckets, now);
+    this.cleanupExpiredBuckets(this.ipBuckets, now);
+
+    return {
+      allowed: true
+    };
+  }
+
+  private getBucket(
+    buckets: Map<string, AiRateLimitBucket>,
+    key: string,
+    now: number
+  ): AiRateLimitBucket {
+    const currentBucket = buckets.get(key);
+    if (!currentBucket || now >= currentBucket.resetAt) {
+      const nextBucket: AiRateLimitBucket = {
+        count: 0,
+        resetAt: now + this.windowMs
+      };
+      buckets.set(key, nextBucket);
+      return nextBucket;
+    }
+
+    return currentBucket;
+  }
+
+  private cleanupExpiredBuckets(buckets: Map<string, AiRateLimitBucket>, now: number): void {
+    if (buckets.size <= 256) {
+      return;
+    }
+
+    for (const [key, bucket] of buckets.entries()) {
+      if (now >= bucket.resetAt) {
+        buckets.delete(key);
+      }
+    }
+  }
+
+  private normalizeIp(clientIp: string | null): string | null {
+    if (!clientIp) {
+      return null;
+    }
+
+    const normalizedIp = clientIp.trim();
+    return normalizedIp.length > 0 ? normalizedIp : null;
+  }
+
+  private readPositiveInt(key: string, fallbackValue: number): number {
+    const rawValue = this.configService.get<string | number | undefined>(key);
+    const parsedValue =
+      typeof rawValue === "number" ? rawValue : Number.parseInt(String(rawValue ?? ""), 10);
+
+    if (!Number.isFinite(parsedValue) || parsedValue <= 0) {
+      return fallbackValue;
+    }
+
+    return parsedValue;
+  }
+}

apps/api/src/ai/ai.controller.ts

@@ -0,0 +1,74 @@
+import {
+  Body,
+  Controller,
+  Get,
+  Headers,
+  Ip,
+  Post,
+  Query,
+  UnauthorizedException
+} from "@nestjs/common";
+import { AiChatDto } from "./dto/ai-chat.dto";
+import { ListAiUsageLogsQueryDto } from "./dto/list-ai-usage-logs-query.dto";
+import { UpsertAiProviderBindingDto } from "./dto/upsert-ai-provider-binding.dto";
+import {
+  AiChatResponse,
+  AiService,
+  ListAiBindingsResponse,
+  ListAiUsageLogsResponse,
+  TestAiBindingResponse
+} from "./ai.service";
+
+@Controller("ai")
+export class AiController {
+  constructor(private readonly aiService: AiService) {}
+
+  @Get("bindings")
+  async listBindings(
+    @Headers("x-user-id") userIdHeader: string | string[] | undefined
+  ): Promise<ListAiBindingsResponse> {
+    return this.aiService.listBindings(this.resolveUserId(userIdHeader));
+  }
+
+  @Get("usage-logs")
+  async listUsageLogs(
+    @Headers("x-user-id") userIdHeader: string | string[] | undefined,
+    @Query() query: ListAiUsageLogsQueryDto
+  ): Promise<ListAiUsageLogsResponse> {
+    return this.aiService.listUsageLogs(this.resolveUserId(userIdHeader), query);
+  }
+
+  @Post("bindings")
+  async upsertBinding(
+    @Headers("x-user-id") userIdHeader: string | string[] | undefined,
+    @Body() body: UpsertAiProviderBindingDto
+  ) {
+    return this.aiService.upsertBinding(this.resolveUserId(userIdHeader), body);
+  }
+
+  @Post("bindings/test")
+  async testBinding(
+    @Headers("x-user-id") userIdHeader: string | string[] | undefined,
+    @Body() body: UpsertAiProviderBindingDto
+  ): Promise<TestAiBindingResponse> {
+    return this.aiService.testBinding(this.resolveUserId(userIdHeader), body);
+  }
+
+  @Post("chat")
+  async chat(
+    @Headers("x-user-id") userIdHeader: string | string[] | undefined,
+    @Ip() clientIp: string,
+    @Body() body: AiChatDto
+  ): Promise<AiChatResponse> {
+    return this.aiService.chat(this.resolveUserId(userIdHeader), body, clientIp);
+  }
+
+  private resolveUserId(userIdHeader: string | string[] | undefined): string {
+    const userId = Array.isArray(userIdHeader) ? userIdHeader[0] : userIdHeader;
+    if (!userId) {
+      throw new UnauthorizedException("缺少用户上下文");
+    }
+
+    return userId;
+  }
+}

apps/api/src/ai/ai.module.ts

@@ -0,0 +1,21 @@
+import { Module } from "@nestjs/common";
+import { PrismaModule } from "../prisma/prisma.module";
+import { AiRateLimitService } from "./ai-rate-limit.service";
+import { AiController } from "./ai.controller";
+import { AiProviderRegistryService } from "./ai-provider-registry.service";
+import { AiService } from "./ai.service";
+import { AstrbotProvider } from "./providers/astrbot.provider";
+import { OpenAiCompatibleProvider } from "./providers/openai-compatible.provider";
+
+@Module({
+  imports: [PrismaModule],
+  controllers: [AiController],
+  providers: [
+    AiService,
+    AiRateLimitService,
+    AiProviderRegistryService,
+    OpenAiCompatibleProvider,
+    AstrbotProvider
+  ]
+})
+export class AiModule {}

apps/api/src/ai/ai.service.ts

@@ -0,0 +1,988 @@
+import {
+  BadGatewayException,
+  BadRequestException,
+  HttpException,
+  HttpStatus,
+  Injectable,
+  Logger
+} from "@nestjs/common";
+import {
+  AiChannel,
+  AiUsageLog,
+  AiProviderBinding,
+  AiPublicPoolConfig,
+  Prisma,
+  TaskPriority,
+  TaskStatus
+} from "../../generated/prisma/client";
+import { PrismaService } from "../prisma/prisma.service";
+import { DataEncryptionService } from "../security/data-encryption.service";
+import { AiRateLimitService } from "./ai-rate-limit.service";
+import { AiProviderRegistryService } from "./ai-provider-registry.service";
+import { AiChatDto } from "./dto/ai-chat.dto";
+import { ListAiUsageLogsQueryDto } from "./dto/list-ai-usage-logs-query.dto";
+import { UpsertAiProviderBindingDto } from "./dto/upsert-ai-provider-binding.dto";
+import {
+  AiResolvedRouteCandidate,
+  AiRouteAttempt,
+  AiRouteFailureError,
+  AiUsageMetrics
+} from "./ai.types";
+
+type AiBindingSummary = {
+  id: string;
+  channel: AiChannel;
+  providerName: string;
+  model: string | null;
+  configId: string | null;
+  configName: string | null;
+  endpoint: string | null;
+  isEnabled: boolean;
+  hasApiKey: boolean;
+  maskedApiKey: string | null;
+  updatedAt: string;
+};
+
+type AiRoutePlanEntry =
+  | {
+      kind: "candidate";
+      candidate: AiResolvedRouteCandidate;
+    }
+  | {
+      kind: "skip";
+      attempt: AiRouteAttempt;
+    };
+
+export type ListAiBindingsResponse = {
+  routeOrder: AiChannel[];
+  bindings: AiBindingSummary[];
+  publicPool: {
+    enabled: boolean;
+    providerName: string | null;
+    model: string | null;
+    hasApiKey: boolean;
+  } | null;
+};
+
+type AiUsageLogSummary = {
+  id: string;
+  channel: AiChannel;
+  providerName: string | null;
+  model: string | null;
+  promptTokens: number;
+  completionTokens: number;
+  totalTokens: number;
+  latencyMs: number | null;
+  success: boolean;
+  errorCode: string | null;
+  createdAt: string;
+};
+
+type AiContextTaskItem = {
+  id: string;
+  title: string;
+  priority: TaskPriority;
+  status: TaskStatus;
+  ddl: Date | null;
+  contentText: string | null;
+  updatedAt: Date;
+};
+
+export type ListAiUsageLogsResponse = {
+  items: AiUsageLogSummary[];
+  page: number;
+  pageSize: number;
+  total: number;
+};
+
+export type AiChatResponse = {
+  channel: AiChannel;
+  providerName: string;
+  model: string | null;
+  content: string;
+  sessionId: string | null;
+  attempts: AiRouteAttempt[];
+};
+
+export type TestAiBindingResponse =
+  | {
+      success: true;
+      channel: AiChannel;
+      providerName: string;
+      model: string | null;
+      contentPreview: string;
+    }
+  | {
+      success: false;
+      channel: AiChannel;
+      providerName: string;
+      model: string | null;
+      code: string;
+      message: string;
+    };
+
+@Injectable()
+export class AiService {
+  private readonly logger = new Logger(AiService.name);
+  private readonly maxContextTasks = 6;
+  private readonly maxContextContentLength = 80;
+
+  constructor(
+    private readonly prismaService: PrismaService,
+    private readonly aiProviderRegistryService: AiProviderRegistryService,
+    private readonly dataEncryptionService: DataEncryptionService,
+    private readonly aiRateLimitService: AiRateLimitService
+  ) {}
+
+  async listBindings(userId: string): Promise<ListAiBindingsResponse> {
+    const [bindings, publicPool] = await Promise.all([
+      this.prismaService.aiProviderBinding.findMany({
+        where: {
+          userId
+        },
+        orderBy: [{ updatedAt: "desc" }]
+      }),
+      this.prismaService.aiPublicPoolConfig.findFirst({
+        orderBy: {
+          updatedAt: "desc"
+        }
+      })
+    ]);
+
+    const latestBindings = this.pickLatestBindingsByChannel(bindings);
+
+    return {
+      routeOrder: [AiChannel.USER_KEY, AiChannel.ASTRBOT, AiChannel.PUBLIC_POOL],
+      bindings: latestBindings.map((binding) => this.serializeBinding(binding)),
+      publicPool: publicPool
+        ? {
+            enabled: publicPool.enabled,
+            providerName: this.readDecryptedString(publicPool.providerName),
+            model: this.readDecryptedString(publicPool.model),
+            hasApiKey: Boolean(publicPool.encryptedApiKey)
+          }
+        : null
+    };
+  }
+
+  async listUsageLogs(
+    userId: string,
+    query: ListAiUsageLogsQueryDto
+  ): Promise<ListAiUsageLogsResponse> {
+    const page = query.page ?? 1;
+    const pageSize = query.pageSize ?? 20;
+    const skip = (page - 1) * pageSize;
+    const where: Prisma.AiUsageLogWhereInput = {
+      userId
+    };
+
+    if (query.channel) {
+      where.channel = query.channel;
+    }
+
+    if (query.success !== undefined) {
+      where.success = query.success;
+    }
+
+    const [items, total] = await Promise.all([
+      this.prismaService.aiUsageLog.findMany({
+        where,
+        orderBy: {
+          createdAt: "desc"
+        },
+        skip,
+        take: pageSize
+      }),
+      this.prismaService.aiUsageLog.count({
+        where
+      })
+    ]);
+
+    return {
+      items: items.map((item) => this.serializeUsageLog(item)),
+      page,
+      pageSize,
+      total
+    };
+  }
+
+  async upsertBinding(userId: string, dto: UpsertAiProviderBindingDto): Promise<AiBindingSummary> {
+    if (dto.channel === AiChannel.PUBLIC_POOL) {
+      throw new BadRequestException("公共 AI 通道只能由管理员配置");
+    }
+
+    this.validateBindingInput(dto);
+
+    const result = await this.prismaService.$transaction(async (tx) => {
+      const existingBinding = await tx.aiProviderBinding.findFirst({
+        where: {
+          userId,
+          channel: dto.channel
+        },
+        orderBy: {
+          updatedAt: "desc"
+        }
+      });
+
+      if (!existingBinding) {
+        return tx.aiProviderBinding.create({
+          data: {
+            userId,
+            channel: dto.channel,
+            providerName: this.encryptRequiredString(this.normalizeProviderName(dto.providerName)),
+            model: this.encryptOptionalString(dto.model),
+            configId: this.encryptOptionalString(dto.configId),
+            configName: this.encryptOptionalString(dto.configName),
+            endpoint: this.encryptOptionalString(dto.endpoint),
+            encryptedApiKey: this.encryptOptionalString(dto.apiKey),
+            isEnabled: dto.isEnabled ?? true
+          }
+        });
+      }
+
+      const updateData: Prisma.AiProviderBindingUpdateInput = {
+        channel: dto.channel,
+        providerName: this.encryptRequiredString(this.normalizeProviderName(dto.providerName)),
+        model: this.encryptOptionalString(dto.model),
+        configId: this.encryptOptionalString(dto.configId),
+        configName: this.encryptOptionalString(dto.configName),
+        isEnabled: dto.isEnabled ?? existingBinding.isEnabled
+      };
+
+      if (dto.endpoint !== undefined) {
+        updateData.endpoint = this.encryptOptionalString(dto.endpoint);
+      }
+
+      if (dto.apiKey !== undefined) {
+        updateData.encryptedApiKey = this.encryptOptionalString(dto.apiKey);
+      }
+
+      return tx.aiProviderBinding.update({
+        where: {
+          id: existingBinding.id
+        },
+        data: updateData
+      });
+    });
+
+    return this.serializeBinding(result);
+  }
+
+  async testBinding(
+    userId: string,
+    dto: UpsertAiProviderBindingDto
+  ): Promise<TestAiBindingResponse> {
+    if (dto.channel === AiChannel.PUBLIC_POOL) {
+      throw new BadRequestException("公共 AI 通道不能由用户自行测试");
+    }
+
+    const candidate = await this.buildTestCandidate(userId, dto);
+    const executor = this.aiProviderRegistryService.getExecutor(candidate.channel);
+
+    try {
+      const result = await executor.execute(candidate, {
+        userId,
+        message: "请只回复“连接成功”，不要添加其他内容。",
+        sessionId: null
+      });
+
+      return {
+        success: true,
+        channel: result.channel,
+        providerName: result.providerName,
+        model: result.model,
+        contentPreview: this.limitPreviewText(result.content)
+      };
+    } catch (error) {
+      if (error instanceof AiRouteFailureError) {
+        return {
+          success: false,
+          channel: error.channel,
+          providerName: error.providerName,
+          model: candidate.model,
+          code: error.code,
+          message: error.message
+        };
+      }
+
+      if (error instanceof Error) {
+        return {
+          success: false,
+          channel: candidate.channel,
+          providerName: candidate.providerName,
+          model: candidate.model,
+          code: "UNKNOWN_ERROR",
+          message: error.message
+        };
+      }
+
+      return {
+        success: false,
+        channel: candidate.channel,
+        providerName: candidate.providerName,
+        model: candidate.model,
+        code: "UNKNOWN_ERROR",
+        message: "未知错误"
+      };
+    }
+  }
+
+  async chat(
+    userId: string,
+    dto: AiChatDto,
+    clientIp: string | null = null
+  ): Promise<AiChatResponse> {
+    const rateLimitResult = this.aiRateLimitService.consume(userId, clientIp);
+    if (!rateLimitResult.allowed) {
+      throw new HttpException(
+        {
+          message: "AI 请求过于频繁，请稍后再试",
+          code: "AI_RATE_LIMITED",
+          dimension: rateLimitResult.reason === "USER" ? "user" : "ip",
+          retryAfterMs: rateLimitResult.retryAfterMs,
+          limit: rateLimitResult.limit,
+          windowMs: rateLimitResult.windowMs
+        },
+        HttpStatus.TOO_MANY_REQUESTS
+      );
+    }
+
+    const attempts: AiRouteAttempt[] = [];
+    const plan = await this.buildRoutePlan(userId, dto.channel ?? null);
+    const promptMessage = await this.buildPromptMessage(userId, dto.message, dto.localTasks ?? []);
+
+    for (const entry of plan) {
+      if (entry.kind === "skip") {
+        attempts.push(entry.attempt);
+        continue;
+      }
+
+      const executor = this.aiProviderRegistryService.getExecutor(entry.candidate.channel);
+      const startedAt = Date.now();
+
+      try {
+        const result = await executor.execute(entry.candidate, {
+          userId,
+          message: promptMessage,
+          sessionId: dto.sessionId ?? null
+        });
+        const latencyMs = Date.now() - startedAt;
+
+        attempts.push({
+          channel: result.channel,
+          providerName: result.providerName,
+          model: result.model,
+          status: "success",
+          reasonCode: null,
+          reasonMessage: null
+        });
+        await this.recordUsageLog({
+          userId,
+          channel: result.channel,
+          providerName: result.providerName,
+          model: result.model,
+          usage: result.usage,
+          latencyMs,
+          success: true,
+          errorCode: null
+        });
+
+        return {
+          channel: result.channel,
+          providerName: result.providerName,
+          model: result.model,
+          content: result.content,
+          sessionId: result.sessionId,
+          attempts
+        };
+      } catch (error) {
+        const latencyMs = Date.now() - startedAt;
+        const failureAttempt = this.toFailureAttempt(entry.candidate, error);
+        attempts.push(failureAttempt);
+        await this.recordUsageLog({
+          userId,
+          channel: failureAttempt.channel,
+          providerName: failureAttempt.providerName,
+          model: failureAttempt.model,
+          usage: null,
+          latencyMs,
+          success: false,
+          errorCode: failureAttempt.reasonCode
+        });
+        this.logger.warn(
+          `AI 通道降级：channel=${failureAttempt.channel} provider=${failureAttempt.providerName ?? "unknown"} code=${failureAttempt.reasonCode ?? "UNKNOWN"} message=${failureAttempt.reasonMessage ?? "unknown"}`
+        );
+      }
+    }
+
+    throw new BadGatewayException({
+      message: "当前没有可用的 AI 通道，请稍后重试",
+      attempts
+    });
+  }
+
+  private async buildRoutePlan(
+    userId: string,
+    selectedChannel: AiChannel | null
+  ): Promise<AiRoutePlanEntry[]> {
+    const plan: AiRoutePlanEntry[] = [];
+    const targetChannels = selectedChannel
+      ? [selectedChannel]
+      : [AiChannel.USER_KEY, AiChannel.ASTRBOT, AiChannel.PUBLIC_POOL];
+
+    for (const channel of targetChannels) {
+      if (channel === AiChannel.PUBLIC_POOL) {
+        const publicPool = await this.findEnabledPublicPool();
+        if (publicPool) {
+          plan.push({
+            kind: "candidate",
+            candidate: this.toPublicPoolCandidate(publicPool)
+          });
+        } else {
+          plan.push({
+            kind: "skip",
+            attempt: {
+              channel: AiChannel.PUBLIC_POOL,
+              providerName: null,
+              model: null,
+              status: "skipped",
+              reasonCode: "PUBLIC_POOL_DISABLED",
+              reasonMessage: "公共 AI 通道未开启"
+            }
+          });
+        }
+        continue;
+      }
+
+      const binding = await this.findPreferredBinding(userId, channel);
+      if (binding) {
+        plan.push({
+          kind: "candidate",
+          candidate: this.toBindingCandidate(binding)
+        });
+        continue;
+      }
+
+      plan.push({
+        kind: "skip",
+        attempt: {
+          channel,
+          providerName: null,
+          model: null,
+          status: "skipped",
+          reasonCode: "CHANNEL_NOT_CONFIGURED",
+          reasonMessage:
+            channel === AiChannel.USER_KEY
+              ? "当前用户未配置可用的自备 Key 通道"
+              : "当前用户未配置可用的 AstrBot 通道"
+        }
+      });
+    }
+
+    return plan;
+  }
+
+  private async findPreferredBinding(
+    userId: string,
+    channel: AiChannel
+  ): Promise<AiProviderBinding | null> {
+    return this.prismaService.aiProviderBinding.findFirst({
+      where: {
+        userId,
+        channel,
+        isEnabled: true
+      },
+      orderBy: {
+        updatedAt: "desc"
+      }
+    });
+  }
+
+  private async findEnabledPublicPool(): Promise<AiPublicPoolConfig | null> {
+    return this.prismaService.aiPublicPoolConfig.findFirst({
+      where: {
+        enabled: true
+      },
+      orderBy: {
+        updatedAt: "desc"
+      }
+    });
+  }
+
+  private async buildTestCandidate(
+    userId: string,
+    dto: UpsertAiProviderBindingDto
+  ): Promise<AiResolvedRouteCandidate> {
+    const existingBinding = await this.prismaService.aiProviderBinding.findFirst({
+      where: {
+        userId,
+        channel: dto.channel
+      },
+      orderBy: {
+        updatedAt: "desc"
+      }
+    });
+
+    const mergedDto: UpsertAiProviderBindingDto = {
+      channel: dto.channel,
+      providerName:
+        dto.providerName ?? this.readDecryptedString(existingBinding?.providerName ?? null) ?? "",
+      model: dto.model ?? this.readDecryptedString(existingBinding?.model ?? null) ?? undefined,
+      configId:
+        dto.configId ?? this.readDecryptedString(existingBinding?.configId ?? null) ?? undefined,
+      configName:
+        dto.configName ??
+        this.readDecryptedString(existingBinding?.configName ?? null) ??
+        undefined,
+      endpoint:
+        dto.endpoint ?? this.readDecryptedString(existingBinding?.endpoint ?? null) ?? undefined,
+      apiKey:
+        dto.apiKey ??
+        this.readDecryptedString(existingBinding?.encryptedApiKey ?? null) ??
+        undefined,
+      isEnabled: dto.isEnabled ?? existingBinding?.isEnabled ?? true
+    };
+
+    this.validateBindingInput(mergedDto);
+
+    return {
+      channel: mergedDto.channel,
+      source: existingBinding ? "binding" : "binding",
+      sourceId: existingBinding?.id ?? null,
+      providerName: this.normalizeProviderName(mergedDto.providerName),
+      model: this.normalizeOptionalString(mergedDto.model),
+      configId: this.normalizeOptionalString(mergedDto.configId),
+      configName: this.normalizeOptionalString(mergedDto.configName),
+      endpoint: this.normalizeOptionalString(mergedDto.endpoint),
+      apiKey: this.normalizeOptionalString(mergedDto.apiKey)
+    };
+  }
+
+  private toBindingCandidate(binding: AiProviderBinding): AiResolvedRouteCandidate {
+    return {
+      channel: binding.channel,
+      source: "binding",
+      sourceId: binding.id,
+      providerName: this.readDecryptedString(binding.providerName) ?? "",
+      model: this.readDecryptedString(binding.model),
+      configId: this.readDecryptedString(binding.configId),
+      configName: this.readDecryptedString(binding.configName),
+      endpoint: this.readDecryptedString(binding.endpoint),
+      apiKey: this.readDecryptedString(binding.encryptedApiKey)
+    };
+  }
+
+  private toPublicPoolCandidate(publicPool: AiPublicPoolConfig): AiResolvedRouteCandidate {
+    return {
+      channel: AiChannel.PUBLIC_POOL,
+      source: "public_pool",
+      sourceId: publicPool.id,
+      providerName: this.readDecryptedString(publicPool.providerName) ?? "public-pool",
+      model: this.readDecryptedString(publicPool.model),
+      configId: null,
+      configName: null,
+      endpoint: this.readDecryptedString(publicPool.endpoint),
+      apiKey: this.readDecryptedString(publicPool.encryptedApiKey)
+    };
+  }
+
+  private serializeBinding(binding: AiProviderBinding): AiBindingSummary {
+    const decryptedProviderName = this.readDecryptedString(binding.providerName) ?? "";
+    const decryptedModel = this.readDecryptedString(binding.model);
+    const decryptedConfigId = this.readDecryptedString(binding.configId);
+    const decryptedConfigName = this.readDecryptedString(binding.configName);
+    const decryptedEndpoint = this.readDecryptedString(binding.endpoint);
+    const decryptedApiKey = this.readDecryptedString(binding.encryptedApiKey);
+
+    return {
+      id: binding.id,
+      channel: binding.channel,
+      providerName: decryptedProviderName,
+      model: decryptedModel,
+      configId: decryptedConfigId,
+      configName: decryptedConfigName,
+      endpoint: decryptedEndpoint,
+      isEnabled: binding.isEnabled,
+      hasApiKey: Boolean(binding.encryptedApiKey),
+      maskedApiKey: this.maskSecret(decryptedApiKey),
+      updatedAt: binding.updatedAt.toISOString()
+    };
+  }
+
+  private pickLatestBindingsByChannel(bindings: AiProviderBinding[]): AiProviderBinding[] {
+    const bindingMap = new Map<AiChannel, AiProviderBinding>();
+
+    for (const binding of bindings) {
+      if (!bindingMap.has(binding.channel)) {
+        bindingMap.set(binding.channel, binding);
+      }
+    }
+
+    return [AiChannel.USER_KEY, AiChannel.ASTRBOT]
+      .map((channel) => bindingMap.get(channel) ?? null)
+      .filter((binding): binding is AiProviderBinding => binding !== null);
+  }
+
+  private serializeUsageLog(log: AiUsageLog): AiUsageLogSummary {
+    return {
+      id: log.id,
+      channel: log.channel,
+      providerName: this.readDecryptedString(log.providerName),
+      model: this.readDecryptedString(log.model),
+      promptTokens: log.promptTokens,
+      completionTokens: log.completionTokens,
+      totalTokens: log.totalTokens,
+      latencyMs: log.latencyMs,
+      success: log.success,
+      errorCode: log.errorCode,
+      createdAt: log.createdAt.toISOString()
+    };
+  }
+
+  private async buildPromptMessage(
+    userId: string,
+    userMessage: string,
+    localTasks: NonNullable<AiChatDto["localTasks"]>
+  ): Promise<string> {
+    const taskSummary = await this.buildTaskContextSummary(userId, localTasks);
+    if (!taskSummary) {
+      return userMessage;
+    }
+
+    return [
+      "你是 TodoList 的 AI 助手，需要结合用户当前待办提供任务统筹建议。",
+      "以下是系统整理的未完成任务摘要：",
+      taskSummary,
+      "请优先根据这些任务的紧急度、截止时间和执行顺序回答，并给出明确可执行的建议。",
+      `用户当前问题：${userMessage}`
+    ].join("\n\n");
+  }
+
+  private async buildTaskContextSummary(
+    userId: string,
+    localTasks: NonNullable<AiChatDto["localTasks"]>
+  ): Promise<string | null> {
+    const tasks = await this.prismaService.task.findMany({
+      where: {
+        userId,
+        status: {
+          in: [TaskStatus.TODO, TaskStatus.IN_PROGRESS]
+        }
+      },
+      select: {
+        id: true,
+        title: true,
+        priority: true,
+        status: true,
+        ddl: true,
+        contentText: true,
+        updatedAt: true
+      },
+      take: 20
+    });
+
+    const sortedTasks = this.sortContextTasks(this.mergeContextTasks(tasks, localTasks));
+    if (sortedTasks.length === 0) {
+      return null;
+    }
+
+    const visibleTasks = sortedTasks.slice(0, this.maxContextTasks);
+    const lines = visibleTasks.map((task, index) => {
+      const parts = [
+        `${index + 1}. ${task.title}`,
+        `优先级：${this.getPriorityLabel(task.priority)}`,
+        `状态：${this.getStatusLabel(task.status)}`,
+        `DDL：${task.ddl ? task.ddl.toISOString() : "未设置"}`
+      ];
+
+      const contentSnippet = this.getContentSnippet(task.contentText);
+      if (contentSnippet) {
+        parts.push(`内容摘要：${contentSnippet}`);
+      }
+
+      return parts.join(" | ");
+    });
+
+    const omittedCount = sortedTasks.length - visibleTasks.length;
+    if (omittedCount > 0) {
+      lines.push(`另有 ${omittedCount} 条任务已省略。`);
+    }
+
+    return [`共 ${sortedTasks.length} 条未完成任务。`, ...lines].join("\n");
+  }
+
+  private mergeContextTasks(
+    databaseTasks: Array<{
+      id: string;
+      title: string;
+      priority: TaskPriority;
+      status: TaskStatus;
+      ddl: Date | null;
+      contentText: string | null;
+      updatedAt: Date;
+    }>,
+    localTasks: NonNullable<AiChatDto["localTasks"]>
+  ): AiContextTaskItem[] {
+    const taskMap = new Map<string, AiContextTaskItem>();
+
+    for (const task of databaseTasks) {
+      taskMap.set(task.id, {
+        id: task.id,
+        title: this.readDecryptedString(task.title) ?? "未命名任务",
+        priority: task.priority,
+        status: task.status,
+        ddl: task.ddl,
+        contentText: this.readDecryptedString(task.contentText),
+        updatedAt: task.updatedAt
+      });
+    }
+
+    for (const task of localTasks) {
+      if (task.status !== TaskStatus.TODO && task.status !== TaskStatus.IN_PROGRESS) {
+        continue;
+      }
+
+      const currentTask = taskMap.get(task.id);
+      const nextTask: AiContextTaskItem = {
+        id: task.id,
+        title: task.title.trim().length > 0 ? task.title.trim() : "未命名任务",
+        priority: task.priority,
+        status: task.status,
+        ddl: typeof task.ddlAt === "number" ? new Date(task.ddlAt) : null,
+        contentText:
+          typeof task.contentText === "string" && task.contentText.trim().length > 0
+            ? task.contentText
+            : null,
+        updatedAt: new Date(task.updatedAt)
+      };
+
+      if (!currentTask || nextTask.updatedAt.getTime() >= currentTask.updatedAt.getTime()) {
+        taskMap.set(task.id, nextTask);
+      }
+    }
+
+    return [...taskMap.values()].filter(
+      (task) => task.status === TaskStatus.TODO || task.status === TaskStatus.IN_PROGRESS
+    );
+  }
+
+  private sortContextTasks(tasks: AiContextTaskItem[]): AiContextTaskItem[] {
+    return [...tasks].sort((left, right) => {
+      const priorityDiff =
+        this.getPriorityWeight(right.priority) - this.getPriorityWeight(left.priority);
+      if (priorityDiff !== 0) {
+        return priorityDiff;
+      }
+
+      const leftDdl = left.ddl?.getTime() ?? Number.POSITIVE_INFINITY;
+      const rightDdl = right.ddl?.getTime() ?? Number.POSITIVE_INFINITY;
+      if (leftDdl !== rightDdl) {
+        return leftDdl - rightDdl;
+      }
+
+      return right.updatedAt.getTime() - left.updatedAt.getTime();
+    });
+  }
+
+  private toFailureAttempt(candidate: AiResolvedRouteCandidate, error: unknown): AiRouteAttempt {
+    if (error instanceof AiRouteFailureError) {
+      return {
+        channel: error.channel,
+        providerName: error.providerName,
+        model: candidate.model,
+        status: "failed",
+        reasonCode: error.code,
+        reasonMessage: error.message
+      };
+    }
+
+    if (error instanceof Error) {
+      return {
+        channel: candidate.channel,
+        providerName: candidate.providerName,
+        model: candidate.model,
+        status: "failed",
+        reasonCode: "UNKNOWN_ERROR",
+        reasonMessage: error.message
+      };
+    }
+
+    return {
+      channel: candidate.channel,
+      providerName: candidate.providerName,
+      model: candidate.model,
+      status: "failed",
+      reasonCode: "UNKNOWN_ERROR",
+      reasonMessage: "未知错误"
+    };
+  }
+
+  private normalizeOptionalString(value: string | undefined): string | null {
+    if (value === undefined) {
+      return null;
+    }
+
+    const normalizedValue = value.trim();
+    return normalizedValue.length > 0 ? normalizedValue : null;
+  }
+
+  private normalizeProviderName(value: string | undefined): string {
+    return this.normalizeOptionalString(value) ?? "";
+  }
+
+  private encryptOptionalString(value: string | undefined): string | null | undefined {
+    const normalizedValue = this.normalizeOptionalString(value);
+    return this.dataEncryptionService.encryptString(normalizedValue);
+  }
+
+  private encryptRequiredString(value: string): string {
+    const encryptedValue = this.dataEncryptionService.encryptString(value);
+    if (!encryptedValue) {
+      throw new BadRequestException("敏感配置加密失败");
+    }
+
+    return encryptedValue;
+  }
+
+  private readDecryptedString(value: string | null): string | null {
+    const decryptedValue = this.dataEncryptionService.decryptString(value);
+    return typeof decryptedValue === "string" ? decryptedValue : null;
+  }
+
+  private validateBindingInput(dto: UpsertAiProviderBindingDto): void {
+    const providerName = this.normalizeOptionalString(dto.providerName);
+    const configId = this.normalizeOptionalString(dto.configId);
+    const configName = this.normalizeOptionalString(dto.configName);
+
+    if (dto.channel === AiChannel.ASTRBOT) {
+      if (!providerName && !configId && !configName) {
+        throw new BadRequestException(
+          "AstrBot 通道至少需要 providerName、configId、configName 三者之一"
+        );
+      }
+      return;
+    }
+
+    if (!providerName) {
+      throw new BadRequestException("当前通道必须提供 providerName");
+    }
+  }
+
+  private maskSecret(secret: string | null): string | null {
+    if (!secret) {
+      return null;
+    }
+
+    if (secret.length <= 6) {
+      return "*".repeat(secret.length);
+    }
+
+    return `${secret.slice(0, 4)}***${secret.slice(-2)}`;
+  }
+
+  private limitPreviewText(content: string): string {
+    const normalizedContent = content.replace(/\s+/g, " ").trim();
+    if (normalizedContent.length <= 60) {
+      return normalizedContent;
+    }
+
+    return `${normalizedContent.slice(0, 60)}...`;
+  }
+
+  private getPriorityWeight(priority: TaskPriority): number {
+    switch (priority) {
+      case TaskPriority.URGENT:
+        return 4;
+      case TaskPriority.HIGH:
+        return 3;
+      case TaskPriority.MEDIUM:
+        return 2;
+      case TaskPriority.LOW:
+        return 1;
+      default:
+        return 0;
+    }
+  }
+
+  private getPriorityLabel(priority: TaskPriority): string {
+    switch (priority) {
+      case TaskPriority.URGENT:
+        return "紧急";
+      case TaskPriority.HIGH:
+        return "高";
+      case TaskPriority.MEDIUM:
+        return "中";
+      case TaskPriority.LOW:
+        return "低";
+      default:
+        return String(priority);
+    }
+  }
+
+  private getStatusLabel(status: TaskStatus): string {
+    switch (status) {
+      case TaskStatus.TODO:
+        return "待开始";
+      case TaskStatus.IN_PROGRESS:
+        return "进行中";
+      case TaskStatus.DONE:
+        return "已完成";
+      case TaskStatus.ARCHIVED:
+        return "已归档";
+      default:
+        return String(status);
+    }
+  }
+
+  private getContentSnippet(contentText: string | null): string | null {
+    if (!contentText) {
+      return null;
+    }
+
+    const normalizedContent = contentText.replace(/\s+/g, " ").trim();
+    if (normalizedContent.length === 0) {
+      return null;
+    }
+
+    if (normalizedContent.length <= this.maxContextContentLength) {
+      return normalizedContent;
+    }
+
+    return `${normalizedContent.slice(0, this.maxContextContentLength)}...`;
+  }
+
+  private async recordUsageLog(input: {
+    userId: string;
+    channel: AiChannel;
+    providerName: string | null;
+    model: string | null;
+    usage: AiUsageMetrics | null;
+    latencyMs: number;
+    success: boolean;
+    errorCode: string | null;
+  }): Promise<void> {
+    try {
+      await this.prismaService.aiUsageLog.create({
+        data: {
+          userId: input.userId,
+          channel: input.channel,
+          providerName:
+            input.providerName === null
+              ? null
+              : this.dataEncryptionService.encryptString(input.providerName),
+          model:
+            input.model === null ? null : this.dataEncryptionService.encryptString(input.model),
+          promptTokens: input.usage?.promptTokens ?? 0,
+          completionTokens: input.usage?.completionTokens ?? 0,
+          totalTokens: input.usage?.totalTokens ?? 0,
+          latencyMs: input.latencyMs,
+          success: input.success,
+          errorCode: input.errorCode
+        }
+      });
+    } catch (error) {
+      const message = error instanceof Error ? error.message : "未知错误";
+      this.logger.warn(`写入 AI 使用日志失败：${message}`);
+    }
+  }
+}

apps/api/src/ai/ai.types.ts

@@ -0,0 +1,61 @@
+import { AiChannel } from "../../generated/prisma/client";
+
+export type AiResolvedRouteCandidate = {
+  channel: AiChannel;
+  source: "binding" | "public_pool";
+  sourceId: string | null;
+  providerName: string;
+  model: string | null;
+  configId: string | null;
+  configName: string | null;
+  endpoint: string | null;
+  apiKey: string | null;
+};
+
+export type AiChatInput = {
+  userId: string;
+  message: string;
+  sessionId: string | null;
+};
+
+export type AiChatResult = {
+  channel: AiChannel;
+  providerName: string;
+  model: string | null;
+  content: string;
+  sessionId: string | null;
+  usage: AiUsageMetrics | null;
+  raw: unknown;
+};
+
+export type AiUsageMetrics = {
+  promptTokens: number;
+  completionTokens: number;
+  totalTokens: number;
+};
+
+export type AiRouteAttempt = {
+  channel: AiChannel;
+  providerName: string | null;
+  model: string | null;
+  status: "skipped" | "failed" | "success";
+  reasonCode: string | null;
+  reasonMessage: string | null;
+};
+
+export class AiRouteFailureError extends Error {
+  constructor(
+    public readonly channel: AiChannel,
+    public readonly providerName: string,
+    public readonly code: string,
+    message: string
+  ) {
+    super(message);
+    this.name = "AiRouteFailureError";
+    Object.setPrototypeOf(this, new.target.prototype);
+  }
+}
+
+export interface AiChannelExecutor {
+  execute(candidate: AiResolvedRouteCandidate, input: AiChatInput): Promise<AiChatResult>;
+}

apps/api/src/ai/dto/ai-chat.dto.ts

@@ -0,0 +1,60 @@
+import { Type } from "class-transformer";
+import {
+  IsArray,
+  IsEnum,
+  IsInt,
+  IsOptional,
+  IsString,
+  MinLength,
+  ValidateNested
+} from "class-validator";
+import { AiChannel } from "../../../generated/prisma/client";
+import { TaskPriority, TaskStatus } from "../../../generated/prisma/client";
+
+export class LocalTaskContextItemDto {
+  @IsString()
+  @MinLength(1)
+  id!: string;
+
+  @IsString()
+  @MinLength(1)
+  title!: string;
+
+  @IsEnum(TaskPriority)
+  priority!: TaskPriority;
+
+  @IsEnum(TaskStatus)
+  status!: TaskStatus;
+
+  @IsOptional()
+  @IsInt()
+  ddlAt?: number | null;
+
+  @IsOptional()
+  @IsString()
+  contentText?: string | null;
+
+  @IsInt()
+  updatedAt!: number;
+}
+
+export class AiChatDto {
+  @IsString()
+  @MinLength(1)
+  message!: string;
+
+  @IsOptional()
+  @IsString()
+  @MinLength(1)
+  sessionId?: string;
+
+  @IsOptional()
+  @IsEnum(AiChannel)
+  channel?: AiChannel;
+
+  @IsOptional()
+  @IsArray()
+  @ValidateNested({ each: true })
+  @Type(() => LocalTaskContextItemDto)
+  localTasks?: LocalTaskContextItemDto[];
+}

apps/api/src/ai/dto/list-ai-usage-logs-query.dto.ts

@@ -0,0 +1,48 @@
+import { Transform, Type } from "class-transformer";
+import { IsBoolean, IsEnum, IsInt, IsOptional, Max, Min } from "class-validator";
+import { AiChannel } from "../../../generated/prisma/client";
+
+function normalizeBoolean(value: unknown): boolean | undefined {
+  if (typeof value === "boolean") {
+    return value;
+  }
+
+  if (typeof value !== "string") {
+    return undefined;
+  }
+
+  const normalized = value.trim().toLowerCase();
+  if (normalized === "true" || normalized === "1") {
+    return true;
+  }
+
+  if (normalized === "false" || normalized === "0") {
+    return false;
+  }
+
+  return undefined;
+}
+
+export class ListAiUsageLogsQueryDto {
+  @Type(() => Number)
+  @IsOptional()
+  @IsInt()
+  @Min(1)
+  page?: number;
+
+  @Type(() => Number)
+  @IsOptional()
+  @IsInt()
+  @Min(1)
+  @Max(100)
+  pageSize?: number;
+
+  @IsOptional()
+  @IsEnum(AiChannel)
+  channel?: AiChannel;
+
+  @Transform(({ value }) => normalizeBoolean(value))
+  @IsOptional()
+  @IsBoolean()
+  success?: boolean;
+}

apps/api/src/ai/dto/upsert-ai-provider-binding.dto.ts

@@ -0,0 +1,47 @@
+import { AiChannel } from "../../../generated/prisma/client";
+import { IsBoolean, IsEnum, IsOptional, IsString, IsUrl, MinLength } from "class-validator";
+
+export class UpsertAiProviderBindingDto {
+  @IsEnum(AiChannel)
+  channel!: AiChannel;
+
+  @IsOptional()
+  @IsString()
+  @MinLength(1)
+  providerName?: string;
+
+  @IsOptional()
+  @IsString()
+  @MinLength(1)
+  model?: string;
+
+  @IsOptional()
+  @IsString()
+  @MinLength(1)
+  configId?: string;
+
+  @IsOptional()
+  @IsString()
+  @MinLength(1)
+  configName?: string;
+
+  @IsOptional()
+  @IsUrl(
+    {
+      require_tld: false
+    },
+    {
+      message: "endpoint \u5fc5\u987b\u662f\u5408\u6cd5\u7684 URL"
+    }
+  )
+  endpoint?: string;
+
+  @IsOptional()
+  @IsString()
+  @MinLength(1)
+  apiKey?: string;
+
+  @IsOptional()
+  @IsBoolean()
+  isEnabled?: boolean;
+}

apps/api/src/ai/providers/astrbot.provider.ts

@@ -0,0 +1,284 @@
+import { Injectable } from "@nestjs/common";
+import {
+  AiChannelExecutor,
+  AiChatInput,
+  AiChatResult,
+  AiResolvedRouteCandidate,
+  AiRouteFailureError
+} from "../ai.types";
+
+@Injectable()
+export class AstrbotProvider implements AiChannelExecutor {
+  async execute(candidate: AiResolvedRouteCandidate, input: AiChatInput): Promise<AiChatResult> {
+    const routeLabel =
+      candidate.providerName || candidate.configName || candidate.configId || "astrbot";
+
+    if (!candidate.endpoint) {
+      throw new AiRouteFailureError(
+        candidate.channel,
+        routeLabel,
+        "MISSING_ENDPOINT",
+        "缺少 AstrBot 服务地址配置"
+      );
+    }
+
+    if (!candidate.apiKey) {
+      throw new AiRouteFailureError(
+        candidate.channel,
+        routeLabel,
+        "MISSING_API_KEY",
+        "缺少 AstrBot API Key 配置"
+      );
+    }
+
+    const requestUrl = this.buildRequestUrl(candidate.endpoint);
+
+    let response: Response;
+    try {
+      response = await fetch(requestUrl, {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+          Authorization: `Bearer ${candidate.apiKey}`
+        },
+        body: JSON.stringify({
+          username: input.userId,
+          session_id: input.sessionId ?? undefined,
+          message: input.message,
+          enable_streaming: false,
+          selected_model: candidate.model ?? undefined
+        }),
+        signal: AbortSignal.timeout(30000)
+      });
+    } catch (error) {
+      throw new AiRouteFailureError(
+        candidate.channel,
+        routeLabel,
+        "UPSTREAM_UNREACHABLE",
+        this.toErrorMessage(error, "AstrBot 服务请求失败")
+      );
+    }
+
+    if (!response.ok) {
+      const rawText = await response.text();
+      throw new AiRouteFailureError(
+        candidate.channel,
+        routeLabel,
+        `UPSTREAM_HTTP_${response.status}`,
+        this.extractHttpErrorMessage(rawText, response.status)
+      );
+    }
+
+    const events = await this.readSseEvents(response);
+    let content = "";
+    let sessionId = input.sessionId;
+
+    for (const event of events) {
+      const type = this.readString(event["type"]);
+      if (type === "session_id") {
+        sessionId = this.readString(event["session_id"]) ?? sessionId;
+        continue;
+      }
+
+      if (type === "error") {
+        throw new AiRouteFailureError(
+          candidate.channel,
+          routeLabel,
+          this.readString(event["code"]) ?? "ASTRBOT_ERROR",
+          this.readString(event["data"]) ?? "AstrBot 返回错误"
+        );
+      }
+
+      if (type !== "plain") {
+        continue;
+      }
+
+      const chainType = this.readString(event["chain_type"]);
+      if (
+        chainType === "reasoning" ||
+        chainType === "tool_call" ||
+        chainType === "tool_call_result"
+      ) {
+        continue;
+      }
+
+      const data = this.readString(event["data"]);
+      if (!data) {
+        continue;
+      }
+
+      if (event["streaming"] === true) {
+        content += data;
+        continue;
+      }
+
+      content = data;
+    }
+
+    if (!content.trim()) {
+      throw new AiRouteFailureError(
+        candidate.channel,
+        routeLabel,
+        "EMPTY_RESPONSE",
+        "AstrBot 没有返回有效内容"
+      );
+    }
+
+    return {
+      channel: candidate.channel,
+      providerName: routeLabel,
+      model: candidate.model,
+      content,
+      sessionId,
+      usage: this.extractUsage(events),
+      raw: events
+    };
+  }
+
+  private buildRequestUrl(endpoint: string): string {
+    const normalizedEndpoint = endpoint.replace(/\/+$/, "");
+    if (normalizedEndpoint.endsWith("/api/v1/chat")) {
+      return normalizedEndpoint;
+    }
+    if (normalizedEndpoint.endsWith("/api/v1")) {
+      return `${normalizedEndpoint}/chat`;
+    }
+    if (normalizedEndpoint.endsWith("/api")) {
+      return `${normalizedEndpoint}/v1/chat`;
+    }
+    return `${normalizedEndpoint}/api/v1/chat`;
+  }
+
+  private parseSseEvents(rawText: string): Array<Record<string, unknown>> {
+    return rawText
+      .split(/\r?\n\r?\n/)
+      .map((block) =>
+        block
+          .split(/\r?\n/)
+          .filter((line) => line.startsWith("data:"))
+          .map((line) => line.slice(5).trim())
+          .join("\n")
+      )
+      .filter((payload) => payload.length > 0)
+      .map((payload) => {
+        try {
+          return JSON.parse(payload) as Record<string, unknown>;
+        } catch {
+          return null;
+        }
+      })
+      .filter((item): item is Record<string, unknown> => item !== null);
+  }
+
+  private async readSseEvents(response: Response): Promise<Array<Record<string, unknown>>> {
+    if (!response.body) {
+      return this.parseSseEvents(await response.text());
+    }
+
+    const reader = response.body.getReader();
+    const decoder = new TextDecoder();
+    const events: Array<Record<string, unknown>> = [];
+    let buffer = "";
+    let reachedEndEvent = false;
+
+    try {
+      while (!reachedEndEvent) {
+        const { done, value } = await reader.read();
+        if (done) {
+          break;
+        }
+
+        buffer += decoder.decode(value, { stream: true });
+        const segments = buffer.split(/\r?\n\r?\n/);
+        buffer = segments.pop() ?? "";
+
+        for (const segment of segments) {
+          const parsedEvents = this.parseSseEvents(segment);
+          for (const event of parsedEvents) {
+            events.push(event);
+            if (this.readString(event["type"]) === "end") {
+              reachedEndEvent = true;
+              break;
+            }
+          }
+
+          if (reachedEndEvent) {
+            break;
+          }
+        }
+      }
+
+      const tail = `${buffer}${decoder.decode()}`;
+      if (tail.trim().length > 0) {
+        events.push(...this.parseSseEvents(tail));
+      }
+    } finally {
+      await reader.cancel();
+    }
+
+    return events;
+  }
+
+  private extractHttpErrorMessage(rawText: string, statusCode: number): string {
+    try {
+      const payload = JSON.parse(rawText) as Record<string, unknown>;
+      if (typeof payload["message"] === "string") {
+        return payload["message"];
+      }
+      if (typeof payload["data"] === "string") {
+        return payload["data"];
+      }
+    } catch {
+      return `AstrBot 服务调用失败，状态码 ${statusCode}`;
+    }
+
+    return `AstrBot 服务调用失败，状态码 ${statusCode}`;
+  }
+
+  private readString(value: unknown): string | null {
+    return typeof value === "string" ? value : null;
+  }
+
+  private toErrorMessage(error: unknown, fallback: string): string {
+    if (error instanceof Error && error.message) {
+      return error.message;
+    }
+
+    return fallback;
+  }
+
+  private extractUsage(events: Array<Record<string, unknown>>): AiChatResult["usage"] {
+    for (const event of events) {
+      if (this.readString(event["type"]) !== "agent_stats") {
+        continue;
+      }
+
+      const data = this.asRecord(event["data"]);
+      const tokenUsage = this.asRecord(data?.["token_usage"]);
+      if (!tokenUsage) {
+        continue;
+      }
+
+      const promptTokens =
+        (this.readNumber(tokenUsage["input_other"]) ?? 0) +
+        (this.readNumber(tokenUsage["input_cached"]) ?? 0);
+      const completionTokens = this.readNumber(tokenUsage["output"]) ?? 0;
+
+      return {
+        promptTokens,
+        completionTokens,
+        totalTokens: promptTokens + completionTokens
+      };
+    }
+
+    return null;
+  }
+
+  private asRecord(value: unknown): Record<string, unknown> | null {
+    return typeof value === "object" && value !== null ? (value as Record<string, unknown>) : null;
+  }
+
+  private readNumber(value: unknown): number | null {
+    return typeof value === "number" && Number.isFinite(value) ? value : null;
+  }
+}

apps/api/src/ai/providers/openai-compatible.provider.ts

@@ -0,0 +1,300 @@
+import { Injectable } from "@nestjs/common";
+import {
+  AiChannelExecutor,
+  AiChatInput,
+  AiChatResult,
+  AiResolvedRouteCandidate,
+  AiRouteFailureError
+} from "../ai.types";
+
+@Injectable()
+export class OpenAiCompatibleProvider implements AiChannelExecutor {
+  async execute(candidate: AiResolvedRouteCandidate, input: AiChatInput): Promise<AiChatResult> {
+    if (!candidate.endpoint) {
+      throw new AiRouteFailureError(
+        candidate.channel,
+        candidate.providerName,
+        "MISSING_ENDPOINT",
+        "缺少 AI 服务地址配置"
+      );
+    }
+
+    if (!candidate.apiKey) {
+      throw new AiRouteFailureError(
+        candidate.channel,
+        candidate.providerName,
+        "MISSING_API_KEY",
+        "缺少 AI 服务密钥配置"
+      );
+    }
+
+    if (!candidate.model) {
+      throw new AiRouteFailureError(
+        candidate.channel,
+        candidate.providerName,
+        "MISSING_MODEL",
+        "缺少 AI 模型配置"
+      );
+    }
+
+    const requestUrl = this.buildRequestUrl(candidate.endpoint);
+
+    let response: Response;
+    try {
+      response = await fetch(requestUrl, {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+          Authorization: `Bearer ${candidate.apiKey}`
+        },
+        body: JSON.stringify({
+          model: candidate.model,
+          messages: [
+            {
+              role: "user",
+              content: input.message
+            }
+          ],
+          stream: false
+        }),
+        signal: AbortSignal.timeout(30000)
+      });
+    } catch (error) {
+      throw new AiRouteFailureError(
+        candidate.channel,
+        candidate.providerName,
+        "UPSTREAM_UNREACHABLE",
+        this.toErrorMessage(error, "AI 服务请求失败")
+      );
+    }
+
+    let payload: unknown;
+    try {
+      payload = await response.json();
+    } catch (error) {
+      throw new AiRouteFailureError(
+        candidate.channel,
+        candidate.providerName,
+        "INVALID_RESPONSE",
+        this.toErrorMessage(error, "AI 服务返回了无法解析的数据")
+      );
+    }
+
+    if (!response.ok) {
+      throw new AiRouteFailureError(
+        candidate.channel,
+        candidate.providerName,
+        `UPSTREAM_HTTP_${response.status}`,
+        this.extractErrorMessage(payload, `AI 服务调用失败，状态码 ${response.status}`)
+      );
+    }
+
+    const content = this.extractAssistantText(payload);
+    if (!content.trim()) {
+      throw new AiRouteFailureError(
+        candidate.channel,
+        candidate.providerName,
+        "EMPTY_RESPONSE",
+        "AI 服务没有返回有效内容"
+      );
+    }
+
+    return {
+      channel: candidate.channel,
+      providerName: candidate.providerName,
+      model: this.extractModel(payload) ?? candidate.model,
+      content,
+      sessionId: input.sessionId,
+      usage: this.extractUsage(payload),
+      raw: payload
+    };
+  }
+
+  private buildRequestUrl(endpoint: string): string {
+    const normalizedEndpoint = endpoint.replace(/\/+$/, "");
+    if (normalizedEndpoint.endsWith("/chat/completions")) {
+      return normalizedEndpoint;
+    }
+    if (normalizedEndpoint.endsWith("/v1")) {
+      return `${normalizedEndpoint}/chat/completions`;
+    }
+    return `${normalizedEndpoint}/v1/chat/completions`;
+  }
+
+  private extractAssistantText(payload: unknown): string {
+    const chatCompletionText = this.extractChatCompletionText(payload);
+    if (chatCompletionText) {
+      return chatCompletionText;
+    }
+
+    const responsesText = this.extractResponsesApiText(payload);
+    if (responsesText) {
+      return responsesText;
+    }
+
+    return "";
+  }
+
+  private extractChatCompletionText(payload: unknown): string {
+    if (!this.isRecord(payload)) {
+      return "";
+    }
+
+    const choices = payload["choices"];
+    if (!Array.isArray(choices) || choices.length === 0) {
+      return "";
+    }
+
+    const firstChoice = choices[0];
+    if (!this.isRecord(firstChoice)) {
+      return "";
+    }
+
+    const message = firstChoice["message"];
+    if (this.isRecord(message)) {
+      const messageContent = this.extractMessageContent(message["content"]);
+      if (messageContent) {
+        return messageContent;
+      }
+    }
+
+    if (typeof firstChoice["text"] === "string") {
+      return firstChoice["text"];
+    }
+
+    return "";
+  }
+
+  private extractResponsesApiText(payload: unknown): string {
+    if (!this.isRecord(payload)) {
+      return "";
+    }
+
+    if (typeof payload["output_text"] === "string") {
+      return payload["output_text"];
+    }
+
+    const output = payload["output"];
+    if (!Array.isArray(output)) {
+      return "";
+    }
+
+    return output
+      .map((item) => {
+        if (!this.isRecord(item)) {
+          return "";
+        }
+
+        if (typeof item["text"] === "string") {
+          return item["text"];
+        }
+
+        return this.extractMessageContent(item["content"]);
+      })
+      .filter((item) => item.length > 0)
+      .join("\n")
+      .trim();
+  }
+
+  private extractMessageContent(content: unknown): string {
+    if (typeof content === "string") {
+      return content;
+    }
+
+    if (!Array.isArray(content)) {
+      return "";
+    }
+
+    return content
+      .map((item) => this.extractContentPartText(item))
+      .filter((item) => item.length > 0)
+      .join("\n")
+      .trim();
+  }
+
+  private extractContentPartText(item: unknown): string {
+    if (!this.isRecord(item)) {
+      return "";
+    }
+
+    if (typeof item["text"] === "string") {
+      return item["text"];
+    }
+
+    if (this.isRecord(item["text"]) && typeof item["text"]["value"] === "string") {
+      return item["text"]["value"];
+    }
+
+    if (typeof item["content"] === "string") {
+      return item["content"];
+    }
+
+    if (this.isRecord(item["content"]) && typeof item["content"]["text"] === "string") {
+      return item["content"]["text"];
+    }
+
+    return "";
+  }
+
+  private extractModel(payload: unknown): string | null {
+    if (!this.isRecord(payload) || typeof payload["model"] !== "string") {
+      return null;
+    }
+
+    return payload["model"];
+  }
+
+  private extractUsage(payload: unknown): AiChatResult["usage"] {
+    if (!this.isRecord(payload)) {
+      return null;
+    }
+
+    const usage = payload["usage"];
+    if (!this.isRecord(usage)) {
+      return null;
+    }
+
+    const promptTokens = this.readNumber(usage["prompt_tokens"]);
+    const completionTokens = this.readNumber(usage["completion_tokens"]);
+    const totalTokens = this.readNumber(usage["total_tokens"]);
+
+    if (promptTokens === null && completionTokens === null && totalTokens === null) {
+      return null;
+    }
+
+    return {
+      promptTokens: promptTokens ?? 0,
+      completionTokens: completionTokens ?? 0,
+      totalTokens: totalTokens ?? (promptTokens ?? 0) + (completionTokens ?? 0)
+    };
+  }
+
+  private extractErrorMessage(payload: unknown, fallback: string): string {
+    if (!this.isRecord(payload)) {
+      return fallback;
+    }
+
+    const error = payload["error"];
+    if (!this.isRecord(error) || typeof error["message"] !== "string") {
+      return fallback;
+    }
+
+    return error["message"];
+  }
+
+  private isRecord(value: unknown): value is Record<string, unknown> {
+    return typeof value === "object" && value !== null;
+  }
+
+  private toErrorMessage(error: unknown, fallback: string): string {
+    if (error instanceof Error && error.message) {
+      return error.message;
+    }
+
+    return fallback;
+  }
+
+  private readNumber(value: unknown): number | null {
+    return typeof value === "number" && Number.isFinite(value) ? value : null;
+  }
+}

apps/api/src/app.module.ts

@@ -1,8 +1,11 @@
 import { Module } from "@nestjs/common";
 import { ConfigModule } from "@nestjs/config";
+import { resolve } from "node:path";
+import { AiModule } from "./ai/ai.module";
 import { AttachmentModule } from "./attachment/attachment.module";
 import { AuthModule } from "./auth/auth.module";
 import { PrismaModule } from "./prisma/prisma.module";
+import { SecurityModule } from "./security/security.module";
 import { SyncModule } from "./sync/sync.module";
 import { TaskModule } from "./task/task.module";
 
@@ -10,13 +13,15 @@ import { TaskModule } from "./task/task.module";
   imports: [
     ConfigModule.forRoot({
       isGlobal: true,
-      envFilePath: ".env"
+      envFilePath: [resolve(__dirname, "../.env"), ".env"]
     }),
     PrismaModule,
+    SecurityModule,
     AuthModule,
     TaskModule,
     AttachmentModule,
-    SyncModule
+    SyncModule,
+    AiModule
   ]
 })
 export class AppModule {}

apps/api/src/attachment/attachment.service.ts

@@ -1,10 +1,16 @@
 import { randomUUID } from "node:crypto";
-import { Injectable, NotFoundException, PayloadTooLargeException } from "@nestjs/common";
+import {
+  Injectable,
+  InternalServerErrorException,
+  NotFoundException,
+  PayloadTooLargeException
+} from "@nestjs/common";
 import { ConfigService } from "@nestjs/config";
 import { PutObjectCommand, S3Client } from "@aws-sdk/client-s3";
 import { getSignedUrl } from "@aws-sdk/s3-request-presigner";
 import { AttachmentType } from "../../generated/prisma/client";
 import { PrismaService } from "../prisma/prisma.service";
+import { DataEncryptionService } from "../security/data-encryption.service";
 import { CompleteAttachmentDto } from "./dto/complete-attachment.dto";
 import { PresignAttachmentDto } from "./dto/presign-attachment.dto";
 
@@ -25,9 +31,7 @@ export type PresignAttachmentResponse = {
     usedBytes: string;
     remainingBytes: string;
   };
-  headers: {
-    "Content-Type": string;
-  };
+  headers: Record<string, string>;
 };
 
 export type AttachmentResponse = {
@@ -52,7 +56,8 @@ export class AttachmentService {
 
   constructor(
     private readonly configService: ConfigService,
-    private readonly prismaService: PrismaService
+    private readonly prismaService: PrismaService,
+    private readonly dataEncryptionService: DataEncryptionService
   ) {}
 
   async presignAttachment(
@@ -67,15 +72,17 @@ export class AttachmentService {
     }
 
     const bucket = this.getDefaultBucket();
-    const objectKey = this.generateObjectKey(userId, body.fileName);
+    const objectKey = this.generateObjectKey(body.fileName);
     const objectUrl = this.resolveObjectUrl(bucket, objectKey);
     const expiresInSeconds = this.getPresignExpiresInSeconds();
+    const serverSideEncryption = this.getServerSideEncryptionMode();
 
     const command = new PutObjectCommand({
       Bucket: bucket,
       Key: objectKey,
       ContentType: body.mimeType,
-      ContentLength: body.fileSize
+      ContentLength: body.fileSize,
+      ServerSideEncryption: serverSideEncryption
     });
 
     const uploadUrl = await getSignedUrl(this.getS3Client(), command, {
@@ -94,9 +101,7 @@ export class AttachmentService {
         usedBytes: quotaInfo.usedBytes.toString(),
         remainingBytes: (quotaInfo.totalBytes - quotaInfo.usedBytes).toString()
       },
-      headers: {
-        "Content-Type": body.mimeType
-      }
+      headers: this.buildUploadHeaders(body.mimeType, serverSideEncryption)
     };
   }
 
@@ -139,14 +144,14 @@ export class AttachmentService {
           userId,
           taskId: body.taskId ?? null,
           type: body.type ?? this.resolveAttachmentType(body.mimeType),
-          url: objectUrl,
+          url: this.encryptRequiredString(objectUrl),
           mimeType: body.mimeType,
-          fileName: body.fileName,
+          fileName: this.encryptNullableString(body.fileName),
           fileSize: body.fileSize,
           width: body.width ?? null,
           height: body.height ?? null,
           durationMs: body.durationMs ?? null,
-          checksum: body.checksum ?? null
+          checksum: this.encryptNullableString(body.checksum)
         }
       });
     });
@@ -155,14 +160,14 @@ export class AttachmentService {
       id: attachment.id,
       taskId: attachment.taskId,
       type: attachment.type,
-      url: attachment.url,
+      url: this.readDecryptedString(attachment.url) ?? objectUrl,
       mimeType: attachment.mimeType,
-      fileName: attachment.fileName,
+      fileName: this.readDecryptedString(attachment.fileName),
       fileSize: attachment.fileSize,
       width: attachment.width,
       height: attachment.height,
       durationMs: attachment.durationMs,
-      checksum: attachment.checksum,
+      checksum: this.readDecryptedString(attachment.checksum),
       createdAt: attachment.createdAt.toISOString(),
       updatedAt: attachment.updatedAt.toISOString()
     };
@@ -204,10 +209,9 @@ export class AttachmentService {
     return Math.min(configValue, 604800);
   }
 
-  private generateObjectKey(userId: string, fileName: string): string {
-    const safeFileName = fileName.replace(/[^\w.-]+/g, "_");
+  private generateObjectKey(fileName: string): string {
     const datePrefix = new Date().toISOString().slice(0, 10);
-    return `${userId}/${datePrefix}/${randomUUID()}-${safeFileName}`;
+    return `attachments/${datePrefix}/${randomUUID()}${this.extractFileExtension(fileName)}`;
   }
 
   private resolveObjectUrl(bucket: string, objectKey: string): string {
@@ -232,6 +236,37 @@ export class AttachmentService {
     return AttachmentType.FILE;
   }
 
+  private buildUploadHeaders(
+    mimeType: string,
+    serverSideEncryption: "AES256" | undefined
+  ): Record<string, string> {
+    const headers: Record<string, string> = {
+      "Content-Type": mimeType
+    };
+
+    if (serverSideEncryption) {
+      headers["x-amz-server-side-encryption"] = serverSideEncryption;
+    }
+
+    return headers;
+  }
+
+  private getServerSideEncryptionMode(): "AES256" | undefined {
+    const configValue =
+      this.configService.get<string>("S3_SERVER_SIDE_ENCRYPTION")?.trim().toUpperCase() ?? "AES256";
+
+    if (configValue === "NONE" || configValue === "DISABLED") {
+      return undefined;
+    }
+
+    return "AES256";
+  }
+
+  private extractFileExtension(fileName: string): string {
+    const match = /\.[a-zA-Z0-9]{1,16}$/.exec(fileName);
+    return match?.[0]?.toLowerCase() ?? "";
+  }
+
   private async ensureTaskOwnership(userId: string, taskId: string): Promise<void> {
     const task = await this.prismaService.task.findFirst({
       where: {
@@ -279,4 +314,22 @@ export class AttachmentService {
       throw new PayloadTooLargeException("存储配额不足");
     }
   }
+
+  private encryptRequiredString(value: string): string {
+    const encryptedValue = this.dataEncryptionService.encryptString(value);
+    if (!encryptedValue) {
+      throw new InternalServerErrorException("附件元数据加密失败");
+    }
+
+    return encryptedValue;
+  }
+
+  private encryptNullableString(value: string | null | undefined): string | null | undefined {
+    return this.dataEncryptionService.encryptString(value);
+  }
+
+  private readDecryptedString(value: string | null): string | null {
+    const decryptedValue = this.dataEncryptionService.decryptString(value);
+    return typeof decryptedValue === "string" ? decryptedValue : null;
+  }
 }

apps/api/src/auth/auth.service.ts

@@ -5,6 +5,7 @@ import { randomUUID } from "node:crypto";
 import { authenticator } from "@otplib/preset-default";
 import { AuthMailService } from "./auth-mail.service";
 import { PrismaService } from "../prisma/prisma.service";
+import { DataEncryptionService } from "../security/data-encryption.service";
 
 type EmailCodeEntry = {
   code: string;
@@ -33,7 +34,8 @@ export class AuthService {
     private readonly configService: ConfigService,
     private readonly jwtService: JwtService,
     private readonly authMailService: AuthMailService,
-    private readonly prismaService: PrismaService
+    private readonly prismaService: PrismaService,
+    private readonly dataEncryptionService: DataEncryptionService
   ) {}
 
   async sendEmailCode(email: string): Promise<{ success: boolean; expiresInSeconds: number }> {
@@ -118,7 +120,10 @@ export class AuthService {
       }
     });
 
-    return this.issueTokens(entry.user);
+    return this.issueTokens({
+      id: entry.user.id,
+      email: this.readRequiredEmail(entry.user.email)
+    });
   }
 
   async revokeRefreshToken(refreshToken: string): Promise<{ success: boolean }> {
@@ -205,19 +210,27 @@ export class AuthService {
   }
 
   private async getOrCreateUser(email: string): Promise<AuthUser> {
-    return this.prismaService.user.upsert({
+    const normalizedEmail = email.toLowerCase();
+    const emailHash = this.dataEncryptionService.createLookupHash("user.email", normalizedEmail);
+    const user = await this.prismaService.user.upsert({
       where: {
-        email
+        emailHash
       },
       update: {},
       create: {
-        email
+        email: this.encryptRequiredString(normalizedEmail),
+        emailHash
       },
       select: {
         id: true,
         email: true
       }
     });
+
+    return {
+      id: user.id,
+      email: this.readRequiredEmail(user.email)
+    };
   }
 
   private generateCode(): string {
@@ -254,4 +267,22 @@ export class AuthService {
       user
     };
   }
+
+  private encryptRequiredString(value: string): string {
+    const encryptedValue = this.dataEncryptionService.encryptString(value);
+    if (!encryptedValue) {
+      throw new UnauthorizedException("用户敏感字段加密失败");
+    }
+
+    return encryptedValue;
+  }
+
+  private readRequiredEmail(value: string): string {
+    const decryptedValue = this.dataEncryptionService.decryptString(value);
+    if (typeof decryptedValue !== "string" || decryptedValue.length === 0) {
+      throw new UnauthorizedException("用户邮箱解密失败");
+    }
+
+    return decryptedValue;
+  }
 }

apps/api/src/security/data-encryption.service.ts

@@ -0,0 +1,155 @@
+import { Injectable, InternalServerErrorException } from "@nestjs/common";
+import { ConfigService } from "@nestjs/config";
+import { Prisma } from "../../generated/prisma/client";
+import { createCipheriv, createDecipheriv, createHash, createHmac, randomBytes } from "node:crypto";
+
+const ENCRYPTION_PREFIX = "encv1";
+const ENCRYPTION_ALGORITHM = "aes-256-gcm";
+const ENCRYPTION_IV_LENGTH = 12;
+
+@Injectable()
+export class DataEncryptionService {
+  constructor(private readonly configService: ConfigService) {}
+
+  isConfigured(): boolean {
+    return Boolean(this.configService.get<string>("DATA_ENCRYPTION_SECRET"));
+  }
+
+  isEncryptedString(value: string): boolean {
+    return value.startsWith(`${ENCRYPTION_PREFIX}:`);
+  }
+
+  encryptString(value: string | null | undefined): string | null | undefined {
+    if (value === undefined) {
+      return undefined;
+    }
+
+    if (value === null) {
+      return null;
+    }
+
+    const key = this.resolveKey();
+    const iv = randomBytes(ENCRYPTION_IV_LENGTH);
+    const cipher = createCipheriv(ENCRYPTION_ALGORITHM, key, iv);
+    const encrypted = Buffer.concat([cipher.update(value, "utf8"), cipher.final()]);
+    const authTag = cipher.getAuthTag();
+
+    return [
+      ENCRYPTION_PREFIX,
+      iv.toString("base64url"),
+      authTag.toString("base64url"),
+      encrypted.toString("base64url")
+    ].join(":");
+  }
+
+  decryptString(value: string | null | undefined): string | null | undefined {
+    if (value === undefined) {
+      return undefined;
+    }
+
+    if (value === null || !this.isEncryptedPayload(value)) {
+      return value;
+    }
+
+    const [prefix, ivText, authTagText, encryptedText] = value.split(":");
+    if (prefix !== ENCRYPTION_PREFIX || !ivText || !authTagText || encryptedText === undefined) {
+      throw new InternalServerErrorException("加密数据格式无效");
+    }
+
+    try {
+      const key = this.resolveKey();
+      const decipher = createDecipheriv(
+        ENCRYPTION_ALGORITHM,
+        key,
+        Buffer.from(ivText, "base64url")
+      );
+      decipher.setAuthTag(Buffer.from(authTagText, "base64url"));
+      const decrypted = Buffer.concat([
+        decipher.update(Buffer.from(encryptedText, "base64url")),
+        decipher.final()
+      ]);
+
+      return decrypted.toString("utf8");
+    } catch {
+      throw new InternalServerErrorException("加密数据解密失败");
+    }
+  }
+
+  encryptJson(
+    value: Prisma.InputJsonValue | null | undefined
+  ): Prisma.InputJsonValue | null | undefined {
+    if (value === undefined) {
+      return undefined;
+    }
+
+    if (value === null) {
+      return null;
+    }
+
+    return this.encryptString(JSON.stringify(value));
+  }
+
+  decryptJson(value: Prisma.JsonValue | null): Prisma.JsonValue | null {
+    if (value === null) {
+      return null;
+    }
+
+    if (typeof value !== "string" || !this.isEncryptedPayload(value)) {
+      return value;
+    }
+
+    const decrypted = this.decryptString(value);
+    if (typeof decrypted !== "string") {
+      throw new InternalServerErrorException("加密数据解密失败");
+    }
+
+    try {
+      return JSON.parse(decrypted) as Prisma.JsonValue;
+    } catch {
+      throw new InternalServerErrorException("加密 JSON 数据损坏");
+    }
+  }
+
+  decryptPayload(value: Prisma.JsonValue | null): string | null {
+    if (value === null) {
+      return null;
+    }
+
+    if (typeof value === "string") {
+      return this.decryptString(value) ?? null;
+    }
+
+    return JSON.stringify(value);
+  }
+
+  createLookupHash(scope: string, value: string): string {
+    const normalizedScope = scope.trim().toLowerCase();
+    if (!normalizedScope) {
+      throw new InternalServerErrorException("缺少盲索引作用域");
+    }
+
+    const secret = this.configService.get<string>("DATA_ENCRYPTION_SECRET");
+    if (!secret) {
+      throw new InternalServerErrorException("服务端未配置 DATA_ENCRYPTION_SECRET，无法生成盲索引");
+    }
+
+    return createHmac("sha256", `lookup:${normalizedScope}:${secret}`)
+      .update(value, "utf8")
+      .digest("hex");
+  }
+
+  private isEncryptedPayload(value: string): boolean {
+    return this.isEncryptedString(value);
+  }
+
+  private resolveKey(): Buffer {
+    const secret = this.configService.get<string>("DATA_ENCRYPTION_SECRET");
+    if (!secret) {
+      throw new InternalServerErrorException(
+        "服务端未配置 DATA_ENCRYPTION_SECRET，无法写入加密数据"
+      );
+    }
+
+    return createHash("sha256").update(secret, "utf8").digest();
+  }
+}

apps/api/src/security/security.module.ts

@@ -0,0 +1,9 @@
+import { Global, Module } from "@nestjs/common";
+import { DataEncryptionService } from "./data-encryption.service";
+
+@Global()
+@Module({
+  providers: [DataEncryptionService],
+  exports: [DataEncryptionService]
+})
+export class SecurityModule {}

apps/api/src/sync/sync.service.ts

@@ -1,6 +1,7 @@
 import { BadRequestException, Injectable } from "@nestjs/common";
 import { Prisma } from "../../generated/prisma/client";
 import { PrismaService } from "../prisma/prisma.service";
+import { DataEncryptionService } from "../security/data-encryption.service";
 import { SyncPullQueryDto } from "./dto/sync-pull.dto";
 import { SyncPushDto, SyncPushOperationDto } from "./dto/sync-push.dto";
 
@@ -60,7 +61,10 @@ export type SyncPullResponse = {
 
 @Injectable()
 export class SyncService {
-  constructor(private readonly prismaService: PrismaService) {}
+  constructor(
+    private readonly prismaService: PrismaService,
+    private readonly dataEncryptionService: DataEncryptionService
+  ) {}
 
   async pullOperations(userId: string, query: SyncPullQueryDto): Promise<SyncPullResponse> {
     const limit = query.limit ?? 100;
@@ -137,7 +141,7 @@ export class SyncService {
             entityType: operation.entityType,
             entityId: operation.entityId,
             action: operation.action,
-            payload: operation.payload,
+            payload: this.dataEncryptionService.encryptString(operation.payload) ?? undefined,
             clientTs: new Date(operation.clientTs)
           },
           select: {
@@ -252,15 +256,7 @@ export class SyncService {
   }
 
   private serializePayload(payload: Prisma.JsonValue | null): string | null {
-    if (payload === null) {
-      return null;
-    }
-
-    if (typeof payload === "string") {
-      return payload;
-    }
-
-    return JSON.stringify(payload);
+    return this.dataEncryptionService.decryptPayload(payload);
   }
 
   private parseCursor(cursor: string | undefined): SyncPullCursorState | null {

apps/api/src/task/task.service.ts

@@ -1,6 +1,7 @@
-import { Injectable, NotFoundException } from "@nestjs/common";
+import { Injectable, InternalServerErrorException, NotFoundException } from "@nestjs/common";
 import { Prisma, TaskPriority, TaskStatus } from "../../generated/prisma/client";
 import { PrismaService } from "../prisma/prisma.service";
+import { DataEncryptionService } from "../security/data-encryption.service";
 import { CreateTaskDto } from "./dto/create-task.dto";
 import { ListTasksQueryDto, TaskSortBy, TaskSortOrder } from "./dto/list-tasks-query.dto";
 import { UpdateTaskDto } from "./dto/update-task.dto";
@@ -43,16 +44,48 @@ export type ListTasksResponse = {
 
 @Injectable()
 export class TaskService {
-  constructor(private readonly prismaService: PrismaService) {}
+  constructor(
+    private readonly prismaService: PrismaService,
+    private readonly dataEncryptionService: DataEncryptionService
+  ) {}
 
   async listTasks(userId: string, query: ListTasksQueryDto): Promise<ListTasksResponse> {
     const page = query.page ?? 1;
     const pageSize = query.pageSize ?? 20;
     const skip = (page - 1) * pageSize;
+    const keyword = query.keyword?.trim() ?? "";
 
-    const where = this.buildWhereInput(userId, query);
+    const where = this.buildWhereInput(userId, query, keyword.length === 0);
     const orderBy = this.buildOrderByInput(query);
 
+    if (keyword.length > 0) {
+      const items = await this.prismaService.task.findMany({
+        where,
+        orderBy,
+        include: {
+          taskTags: {
+            include: {
+              tag: {
+                select: {
+                  name: true
+                }
+              }
+            }
+          }
+        }
+      });
+
+      const serializedItems = items.map((item: TaskEntity) => this.serializeTask(item));
+      const filteredItems = serializedItems.filter((item) => this.matchesKeyword(item, keyword));
+
+      return {
+        items: filteredItems.slice(skip, skip + pageSize),
+        page,
+        pageSize,
+        total: filteredItems.length
+      };
+    }
+
     const [items, total] = await Promise.all([
       this.prismaService.task.findMany({
         where,
@@ -112,15 +145,18 @@ export class TaskService {
     const tagNames = this.normalizeTagNames(body.tagNames);
     const nextStatus = body.status ?? TaskStatus.TODO;
     const contentJson =
-      body.contentJson !== undefined ? (body.contentJson as Prisma.InputJsonValue) : undefined;
+      body.contentJson !== undefined
+        ? ((this.dataEncryptionService.encryptJson(body.contentJson as Prisma.InputJsonValue) ??
+            Prisma.JsonNull) as Prisma.InputJsonValue | Prisma.NullableJsonNullValueInput)
+        : undefined;
 
     const task = await this.prismaService.$transaction(async (tx) => {
       const createdTask = await tx.task.create({
         data: {
           userId,
-          title: body.title,
+          title: this.encryptRequiredString(body.title),
           contentJson,
-          contentText: body.contentText ?? null,
+          contentText: this.encryptNullableString(body.contentText),
           priority: body.priority ?? TaskPriority.MEDIUM,
           status: nextStatus,
           ddl: body.ddl ? new Date(body.ddl) : null,
@@ -172,13 +208,15 @@ export class TaskService {
     };
 
     if (body.title !== undefined) {
-      data.title = body.title;
+      data.title = this.encryptRequiredString(body.title);
     }
     if (body.contentJson !== undefined) {
-      data.contentJson = body.contentJson as Prisma.InputJsonValue;
+      data.contentJson = (this.dataEncryptionService.encryptJson(
+        body.contentJson as Prisma.InputJsonValue
+      ) ?? Prisma.JsonNull) as Prisma.InputJsonValue | Prisma.NullableJsonNullValueInput;
     }
     if (body.contentText !== undefined) {
-      data.contentText = body.contentText;
+      data.contentText = this.encryptNullableString(body.contentText);
     }
     if (body.priority !== undefined) {
       data.priority = body.priority;
@@ -242,7 +280,11 @@ export class TaskService {
     return { success: true };
   }
 
-  private buildWhereInput(userId: string, query: ListTasksQueryDto): Prisma.TaskWhereInput {
+  private buildWhereInput(
+    userId: string,
+    query: ListTasksQueryDto,
+    includeKeyword: boolean
+  ): Prisma.TaskWhereInput {
     const where: Prisma.TaskWhereInput = {
       userId
     };
@@ -267,7 +309,7 @@ export class TaskService {
       };
     }
 
-    if (query.keyword !== undefined && query.keyword.length > 0) {
+    if (includeKeyword && query.keyword !== undefined && query.keyword.length > 0) {
       where.OR = [
         {
           title: {
@@ -374,9 +416,9 @@ export class TaskService {
   private serializeTask(task: TaskEntity): TaskResponse {
     return {
       id: task.id,
-      title: task.title,
-      contentJson: task.contentJson,
-      contentText: task.contentText,
+      title: this.readDecryptedString(task.title) ?? "未命名任务",
+      contentJson: this.dataEncryptionService.decryptJson(task.contentJson),
+      contentText: this.readDecryptedString(task.contentText),
       priority: task.priority,
       status: task.status,
       ddl: task.ddl?.toISOString() ?? null,
@@ -387,4 +429,30 @@ export class TaskService {
       updatedAt: task.updatedAt.toISOString()
     };
   }
+
+  private encryptRequiredString(value: string): string {
+    const encryptedValue = this.dataEncryptionService.encryptString(value);
+    if (!encryptedValue) {
+      throw new InternalServerErrorException("任务字段加密失败");
+    }
+
+    return encryptedValue;
+  }
+
+  private encryptNullableString(value: string | null | undefined): string | null | undefined {
+    return this.dataEncryptionService.encryptString(value);
+  }
+
+  private readDecryptedString(value: string | null): string | null {
+    const decryptedValue = this.dataEncryptionService.decryptString(value);
+    return typeof decryptedValue === "string" ? decryptedValue : null;
+  }
+
+  private matchesKeyword(task: TaskResponse, keyword: string): boolean {
+    const lowerKeyword = keyword.toLocaleLowerCase();
+    return (
+      task.title.toLocaleLowerCase().includes(lowerKeyword) ||
+      task.contentText?.toLocaleLowerCase().includes(lowerKeyword) === true
+    );
+  }
 }

apps/api/test/astrbot-provider.spec.ts

@@ -0,0 +1,73 @@
+import { AiChannel } from "../generated/prisma/client";
+import { AstrbotProvider } from "../src/ai/providers/astrbot.provider";
+
+describe("AstrbotProvider", () => {
+  const originalFetch = global.fetch;
+
+  afterEach(() => {
+    global.fetch = originalFetch;
+    jest.restoreAllMocks();
+  });
+
+  it("should not forward binding label fields as astrbot selection parameters", async () => {
+    const provider = new AstrbotProvider();
+    const fetchMock = jest.fn(async (_input: unknown, init?: RequestInit) => {
+      expect(init?.method).toBe("POST");
+      const payload = JSON.parse(String(init?.body ?? "{}")) as Record<string, unknown>;
+
+      expect(payload).toMatchObject({
+        username: "user_1",
+        session_id: "session_1",
+        message: "你好",
+        enable_streaming: false,
+        selected_model: "deepseek-chat"
+      });
+      expect(payload).not.toHaveProperty("selected_provider");
+      expect(payload).not.toHaveProperty("config_id");
+      expect(payload).not.toHaveProperty("config_name");
+
+      return new Response(
+        [
+          'data: {"type":"session_id","session_id":"session_1"}',
+          "",
+          'data: {"type":"plain","data":"收到","streaming":false,"chain_type":null}',
+          "",
+          'data: {"type":"end","data":"","streaming":false}',
+          ""
+        ].join("\n"),
+        {
+          status: 200,
+          headers: {
+            "content-type": "text/event-stream"
+          }
+        }
+      );
+    });
+
+    global.fetch = fetchMock as typeof global.fetch;
+
+    const result = await provider.execute(
+      {
+        channel: AiChannel.ASTRBOT,
+        source: "binding",
+        sourceId: "binding_1",
+        providerName: "astrbot-main",
+        model: "deepseek-chat",
+        configId: "default",
+        configName: "默认配置",
+        endpoint: "http://127.0.0.1:6185",
+        apiKey: "abk_secret"
+      },
+      {
+        userId: "user_1",
+        message: "你好",
+        sessionId: "session_1"
+      }
+    );
+
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+    expect(result.content).toBe("收到");
+    expect(result.sessionId).toBe("session_1");
+    expect(result.providerName).toBe("astrbot-main");
+  });
+});

apps/api/test/auth.spec.ts

@@ -0,0 +1,355 @@
+import { UnauthorizedException } from "@nestjs/common";
+import { ConfigService } from "@nestjs/config";
+import { JwtService } from "@nestjs/jwt";
+import { Test, TestingModule } from "@nestjs/testing";
+import { AuthMailService } from "../src/auth/auth-mail.service";
+import { AuthService } from "../src/auth/auth.service";
+import { PrismaService } from "../src/prisma/prisma.service";
+import { DataEncryptionService } from "../src/security/data-encryption.service";
+
+type UserRecord = {
+  id: string;
+  email: string;
+  emailHash: string;
+  nickname: string | null;
+  avatarUrl: string | null;
+};
+
+type RefreshTokenRecord = {
+  id: string;
+  userId: string;
+  tokenHash: string;
+  expiresAt: Date;
+  revokedAt: Date | null;
+  createdAt: Date;
+};
+
+type UserSecurityRecord = {
+  userId: string;
+  twoFactorEnabled: boolean;
+  twoFactorSecret: string | null;
+};
+
+class InMemoryAuthPrismaService {
+  private userIdSequence = 1;
+  private refreshTokenIdSequence = 1;
+  private users: UserRecord[] = [];
+  private refreshTokens: RefreshTokenRecord[] = [];
+  private userSecurities: UserSecurityRecord[] = [];
+
+  readonly user = {
+    upsert: async (args: {
+      where: {
+        emailHash: string;
+      };
+      update: Record<string, never>;
+      create: {
+        email: string;
+        emailHash: string;
+      };
+      select: {
+        id: true;
+        email: true;
+      };
+    }) => {
+      const existingUser = this.users.find((user) => user.emailHash === args.where.emailHash);
+      if (existingUser) {
+        return {
+          id: existingUser.id,
+          email: existingUser.email
+        };
+      }
+
+      const createdUser: UserRecord = {
+        id: `user_${this.userIdSequence++}`,
+        email: args.create.email,
+        emailHash: args.create.emailHash,
+        nickname: null,
+        avatarUrl: null
+      };
+      this.users.push(createdUser);
+
+      return {
+        id: createdUser.id,
+        email: createdUser.email
+      };
+    }
+  };
+
+  readonly refreshToken = {
+    create: async (args: {
+      data: {
+        userId: string;
+        tokenHash: string;
+        expiresAt: Date;
+      };
+    }) => {
+      const refreshToken: RefreshTokenRecord = {
+        id: `refresh_${this.refreshTokenIdSequence++}`,
+        userId: args.data.userId,
+        tokenHash: args.data.tokenHash,
+        expiresAt: args.data.expiresAt,
+        revokedAt: null,
+        createdAt: new Date()
+      };
+      this.refreshTokens.push(refreshToken);
+      return refreshToken;
+    },
+
+    findUnique: async (args: {
+      where: {
+        tokenHash: string;
+      };
+      include: {
+        user: {
+          select: {
+            id: true;
+            email: true;
+          };
+        };
+      };
+    }) => {
+      const refreshToken = this.refreshTokens.find(
+        (item) => item.tokenHash === args.where.tokenHash
+      );
+      if (!refreshToken) {
+        return null;
+      }
+
+      const user = this.users.find((item) => item.id === refreshToken.userId);
+      if (!user) {
+        throw new Error("user not found");
+      }
+
+      return {
+        ...refreshToken,
+        user: {
+          id: user.id,
+          email: user.email
+        }
+      };
+    },
+
+    update: async (args: {
+      where: {
+        id: string;
+      };
+      data: {
+        revokedAt: Date;
+      };
+    }) => {
+      const refreshToken = this.refreshTokens.find((item) => item.id === args.where.id);
+      if (!refreshToken) {
+        throw new Error("refresh token not found");
+      }
+
+      refreshToken.revokedAt = args.data.revokedAt;
+      return refreshToken;
+    },
+
+    updateMany: async (args: {
+      where: {
+        tokenHash: string;
+        revokedAt: null;
+      };
+      data: {
+        revokedAt: Date;
+      };
+    }) => {
+      let count = 0;
+      for (const refreshToken of this.refreshTokens) {
+        if (refreshToken.tokenHash !== args.where.tokenHash || refreshToken.revokedAt !== null) {
+          continue;
+        }
+
+        refreshToken.revokedAt = args.data.revokedAt;
+        count += 1;
+      }
+
+      return { count };
+    }
+  };
+
+  readonly userSecurity = {
+    upsert: async (args: {
+      where: {
+        userId: string;
+      };
+      update: {
+        twoFactorSecret: string;
+        twoFactorEnabled: boolean;
+      };
+      create: {
+        userId: string;
+        twoFactorSecret: string;
+        twoFactorEnabled: boolean;
+      };
+    }) => {
+      const existingSecurity = this.userSecurities.find(
+        (item) => item.userId === args.where.userId
+      );
+      if (existingSecurity) {
+        existingSecurity.twoFactorSecret = args.update.twoFactorSecret;
+        existingSecurity.twoFactorEnabled = args.update.twoFactorEnabled;
+        return existingSecurity;
+      }
+
+      const createdSecurity: UserSecurityRecord = {
+        userId: args.create.userId,
+        twoFactorSecret: args.create.twoFactorSecret,
+        twoFactorEnabled: args.create.twoFactorEnabled
+      };
+      this.userSecurities.push(createdSecurity);
+      return createdSecurity;
+    },
+
+    findUnique: async (args: {
+      where: {
+        userId: string;
+      };
+      select: {
+        twoFactorSecret: true;
+      };
+    }) => {
+      const security = this.userSecurities.find((item) => item.userId === args.where.userId);
+      if (!security) {
+        return null;
+      }
+
+      return {
+        twoFactorSecret: security.twoFactorSecret
+      };
+    },
+
+    update: async (args: {
+      where: {
+        userId: string;
+      };
+      data: {
+        twoFactorEnabled: boolean;
+      };
+    }) => {
+      const security = this.userSecurities.find((item) => item.userId === args.where.userId);
+      if (!security) {
+        throw new Error("user security not found");
+      }
+
+      security.twoFactorEnabled = args.data.twoFactorEnabled;
+      return security;
+    }
+  };
+
+  getUsers(): UserRecord[] {
+    return [...this.users];
+  }
+}
+
+class MockAuthMailService {
+  readonly sentMessages: Array<{
+    email: string;
+    code: string;
+    ttlSeconds: number;
+  }> = [];
+
+  async sendLoginCode(email: string, code: string, ttlSeconds: number): Promise<void> {
+    this.sentMessages.push({
+      email,
+      code,
+      ttlSeconds
+    });
+  }
+}
+
+describe("AuthService", () => {
+  let authService: AuthService;
+  let prismaService: InMemoryAuthPrismaService;
+  let authMailService: MockAuthMailService;
+
+  beforeEach(async () => {
+    prismaService = new InMemoryAuthPrismaService();
+    authMailService = new MockAuthMailService();
+
+    const moduleRef: TestingModule = await Test.createTestingModule({
+      providers: [
+        AuthService,
+        DataEncryptionService,
+        {
+          provide: PrismaService,
+          useValue: prismaService
+        },
+        {
+          provide: AuthMailService,
+          useValue: authMailService
+        },
+        {
+          provide: JwtService,
+          useValue: {
+            signAsync: async (payload: Record<string, unknown>) =>
+              `signed-${String(payload["sub"])}-${String(payload["email"])}`
+          }
+        },
+        {
+          provide: ConfigService,
+          useValue: {
+            get: (key: string) => {
+              switch (key) {
+                case "AUTH_EMAIL_CODE_TTL_SECONDS":
+                  return "300";
+                case "AUTH_ACCESS_EXPIRES_IN_SECONDS":
+                  return "900";
+                case "AUTH_REFRESH_EXPIRES_IN_SECONDS":
+                  return "2592000";
+                case "AUTH_TOTP_ISSUER":
+                  return "TodoList";
+                case "DATA_ENCRYPTION_SECRET":
+                  return "test-data-encryption-secret";
+                default:
+                  return undefined;
+              }
+            }
+          }
+        }
+      ]
+    }).compile();
+
+    authService = moduleRef.get(AuthService);
+  });
+
+  it("should encrypt user email in database while keeping login flow available", async () => {
+    await authService.sendEmailCode("User@Example.com");
+    expect(authMailService.sentMessages).toHaveLength(1);
+    expect(authMailService.sentMessages[0]?.email).toBe("user@example.com");
+
+    const loginResult = await authService.loginWithEmailCode(
+      "USER@example.com",
+      authMailService.sentMessages[0]?.code ?? ""
+    );
+
+    expect(loginResult.user.email).toBe("user@example.com");
+    expect(loginResult.accessToken).toContain("user@example.com");
+
+    const storedUser = prismaService.getUsers()[0];
+    expect(storedUser?.email).not.toBe("user@example.com");
+    expect(storedUser?.emailHash).toMatch(/^[a-f0-9]{64}$/);
+  });
+
+  it("should decrypt user email when refreshing token", async () => {
+    await authService.sendEmailCode("refresh@example.com");
+    const loginResult = await authService.loginWithEmailCode(
+      "refresh@example.com",
+      authMailService.sentMessages[0]?.code ?? ""
+    );
+
+    const refreshResult = await authService.refreshTokens(loginResult.refreshToken);
+    expect(refreshResult.user.email).toBe("refresh@example.com");
+    expect(refreshResult.accessToken).toContain("refresh@example.com");
+  });
+
+  it("should reject invalid verification code", async () => {
+    await authService.sendEmailCode("invalid@example.com");
+
+    await expect(
+      authService.loginWithEmailCode("invalid@example.com", "000000")
+    ).rejects.toBeInstanceOf(UnauthorizedException);
+  });
+});

apps/api/test/openai-compatible-provider.spec.ts

@@ -0,0 +1,80 @@
+import { AiChannel } from "../generated/prisma/client";
+import { OpenAiCompatibleProvider } from "../src/ai/providers/openai-compatible.provider";
+
+describe("OpenAiCompatibleProvider", () => {
+  const originalFetch = global.fetch;
+
+  afterEach(() => {
+    global.fetch = originalFetch;
+    jest.restoreAllMocks();
+  });
+
+  it("should read text from responses style payload when chat content is empty", async () => {
+    const provider = new OpenAiCompatibleProvider();
+    const fetchMock = jest.fn(async (_input: unknown, init?: RequestInit) => {
+      expect(init?.method).toBe("POST");
+
+      return new Response(
+        JSON.stringify({
+          id: "resp_123",
+          object: "response",
+          model: "gpt-5.4",
+          output: [
+            {
+              id: "msg_123",
+              type: "message",
+              role: "assistant",
+              content: [
+                {
+                  type: "output_text",
+                  text: "今天优先先完成截止时间最近的任务。"
+                }
+              ]
+            }
+          ],
+          usage: {
+            prompt_tokens: 15,
+            completion_tokens: 9,
+            total_tokens: 24
+          }
+        }),
+        {
+          status: 200,
+          headers: {
+            "content-type": "application/json"
+          }
+        }
+      );
+    });
+
+    global.fetch = fetchMock as typeof global.fetch;
+
+    const result = await provider.execute(
+      {
+        channel: AiChannel.USER_KEY,
+        source: "binding",
+        sourceId: "binding_user_key_1",
+        providerName: "airouter",
+        model: "gpt-5.4",
+        configId: null,
+        configName: null,
+        endpoint: "https://api.airouter.io/v1",
+        apiKey: "sk_test"
+      },
+      {
+        userId: "user_1",
+        message: "帮我安排今天的任务",
+        sessionId: null
+      }
+    );
+
+    expect(fetchMock).toHaveBeenCalledTimes(1);
+    expect(result.content).toBe("今天优先先完成截止时间最近的任务。");
+    expect(result.model).toBe("gpt-5.4");
+    expect(result.usage).toEqual({
+      promptTokens: 15,
+      completionTokens: 9,
+      totalTokens: 24
+    });
+  });
+});

apps/api/test/sync-push.spec.ts

@@ -1,7 +1,9 @@
 import request from "supertest";
 import { INestApplication, ValidationPipe } from "@nestjs/common";
+import { ConfigService } from "@nestjs/config";
 import { Test, TestingModule } from "@nestjs/testing";
 import { PrismaService } from "../src/prisma/prisma.service";
+import { DataEncryptionService } from "../src/security/data-encryption.service";
 import { SyncController } from "../src/sync/sync.controller";
 import { SyncService } from "../src/sync/sync.service";
 
@@ -159,6 +161,10 @@ class InMemoryPrismaService {
     return this.syncOperations.length;
   }
 
+  getRawOperationById(opId: string): SyncOperationRecord | undefined {
+    return this.syncOperations.find((operation) => operation.opId === opId);
+  }
+
   seedOperations(records: Array<Omit<SyncOperationRecord, "id">>): void {
     for (const record of records) {
       this.syncOperations.push({
@@ -196,7 +202,18 @@ describe("SyncController (integration)", () => {
 
     const moduleRef: TestingModule = await Test.createTestingModule({
       controllers: [SyncController],
-      providers: [SyncService, { provide: PrismaService, useValue: prismaService }]
+      providers: [
+        SyncService,
+        DataEncryptionService,
+        { provide: PrismaService, useValue: prismaService },
+        {
+          provide: ConfigService,
+          useValue: {
+            get: (key: string) =>
+              key === "DATA_ENCRYPTION_SECRET" ? "test-data-encryption-secret" : undefined
+          }
+        }
+      ]
     }).compile();
 
     app = moduleRef.createNestApplication();
@@ -258,6 +275,9 @@ describe("SyncController (integration)", () => {
       })
     ]);
     expect(prismaService.getOperationCount()).toBe(2);
+    expect(prismaService.getRawOperationById("op-create-1")?.payload).not.toBe(
+      '{"title":"浠诲姟涓€"}'
+    );
 
     const secondResponse = await request(app.getHttpServer())
       .post("/sync/push")

apps/api/test/task.spec.ts

@@ -1,7 +1,9 @@
 import request from "supertest";
 import { INestApplication, ValidationPipe } from "@nestjs/common";
+import { ConfigService } from "@nestjs/config";
 import { Test, TestingModule } from "@nestjs/testing";
 import { PrismaService } from "../src/prisma/prisma.service";
+import { DataEncryptionService } from "../src/security/data-encryption.service";
 import { TaskController } from "../src/task/task.controller";
 import { TaskService } from "../src/task/task.service";
 import { TaskPriority, TaskStatus } from "../generated/prisma/client";
@@ -355,6 +357,10 @@ class InMemoryPrismaService {
     return runner(this);
   }
 
+  getRawTaskById(taskId: string): TaskRecord | undefined {
+    return this.tasks.find((task) => task.id === taskId);
+  }
+
   private toTaskWithTags(
     task: TaskRecord
   ): TaskRecord & { taskTags: Array<{ tag: { name: string } }> } {
@@ -390,7 +396,15 @@ describe("TaskController (integration)", () => {
       controllers: [TaskController],
       providers: [
         TaskService,
-        { provide: PrismaService, useValue: prismaService as unknown as PrismaService }
+        DataEncryptionService,
+        { provide: PrismaService, useValue: prismaService as unknown as PrismaService },
+        {
+          provide: ConfigService,
+          useValue: {
+            get: (key: string) =>
+              key === "DATA_ENCRYPTION_SECRET" ? "test-data-encryption-secret" : undefined
+          }
+        }
       ]
     }).compile();
 
@@ -425,6 +439,9 @@ describe("TaskController (integration)", () => {
     expect(createResponse.body.id).toBeDefined();
     expect(createResponse.body.tags).toEqual(["工作", "会议"]);
     const taskId = createResponse.body.id as string;
+    const rawCreatedTask = prismaService.getRawTaskById(taskId);
+    expect(rawCreatedTask?.title).not.toBe("准备周会");
+    expect(rawCreatedTask?.contentText).not.toBe("整理本周进度");
 
     const listResponse = await request(app.getHttpServer())
       .get("/tasks")

apps/api/tsconfig.json

@@ -5,6 +5,6 @@
     "rootDir": ".",
     "outDir": "dist"
   },
-  "include": ["src/**/*.ts", "generated/prisma/**/*.ts"],
+  "include": ["src/**/*.ts", "scripts/**/*.ts", "generated/prisma/**/*.ts"],
   "exclude": ["dist", "node_modules"]
 }

apps/web/src/App.tsx

@@ -17,8 +17,11 @@ import {
 import { Navigate, Route, Routes, useLocation, useNavigate } from "react-router-dom";
 import { Button } from "@/components/ui/button";
 import { cn } from "@/lib/utils";
+import { AiChatPage } from "@/pages/ai-chat-page";
 import { EmailLoginPage } from "@/pages/email-login-page";
 import { OAuthCallbackPage } from "@/pages/oauth-callback-page";
+import { PlaceholderPage } from "@/pages/placeholder-page";
+import { SettingsPage } from "@/pages/settings-page";
 import { TodoShellPage } from "@/pages/todo-shell-page";
 import { revokeRefreshToken, type EmailLoginResult } from "@/services/auth-api";
 import {
@@ -38,16 +41,19 @@ type SidebarItem = {
   key: string;
   label: string;
   icon: LucideIcon;
+  path: string;
 };
 
 const SIDEBAR_ITEMS: SidebarItem[] = [
-  { key: "dashboard", label: "概览面板", icon: LayoutDashboard },
-  { key: "todo", label: "待办事项", icon: ListTodo },
-  { key: "ai", label: "AI 建议", icon: Sparkles },
-  { key: "notice", label: "提醒中心", icon: Bell },
-  { key: "settings", label: "系统设置", icon: Settings }
+  { key: "dashboard", label: "概览面板", icon: LayoutDashboard, path: "/dashboard" },
+  { key: "todo", label: "待办事项", icon: ListTodo, path: "/todo" },
+  { key: "ai", label: "AI 助手", icon: Sparkles, path: "/ai" },
+  { key: "notice", label: "提醒中心", icon: Bell, path: "/notice" },
+  { key: "settings", label: "系统设置", icon: Settings, path: "/settings" }
 ];
 
+const READY_SIDEBAR_KEYS = new Set(["todo", "ai", "settings"]);
+
 function toWebSession(payload: EmailLoginResult): WebSession {
   return {
     accessToken: payload.accessToken,
@@ -104,7 +110,7 @@ function App() {
     saveSession(nextSession);
     setSession(nextSession);
     setMobileSidebarOpen(false);
-    navigate("/", { replace: true });
+    navigate("/todo", { replace: true });
   }
 
   function handleBootstrapSession(nextSession: WebSession): void {
@@ -136,14 +142,21 @@ function App() {
           <nav className="space-y-1">
             {SIDEBAR_ITEMS.map((item) => {
               const ItemIcon = item.icon;
+              const isActive =
+                location.pathname === item.path || location.pathname.startsWith(`${item.path}/`);
               return (
                 <button
                   key={item.key}
                   type="button"
                   className={cn(
                     "group flex w-full items-center rounded-xl border border-transparent px-3 py-2.5 text-left transition-colors",
-                    "gap-3 hover:border-primary/25 hover:bg-primary/10"
+                    "gap-3 hover:border-primary/25 hover:bg-primary/10",
+                    isActive ? "border-primary/25 bg-primary/10" : null
                   )}
+                  onClick={() => {
+                    navigate(item.path);
+                    setMobileSidebarOpen(false);
+                  }}
                 >
                   <ItemIcon className="size-5 shrink-0 text-primary" />
                   {collapsed ? null : (
@@ -151,9 +164,11 @@ function App() {
                       <span className="text-sm whitespace-nowrap text-foreground">
                         {item.label}
                       </span>
+                      {READY_SIDEBAR_KEYS.has(item.key) ? null : (
                         <span className="ml-auto whitespace-nowrap rounded-full border border-border bg-card px-2 py-0.5 text-[10px] text-muted-foreground">
                           即将上线
                         </span>
+                      )}
                     </>
                   )}
                 </button>
@@ -208,7 +223,10 @@ function App() {
                 path="/auth/callback/:provider"
                 element={<OAuthCallbackPage onBootstrapSession={handleBootstrapSession} />}
               />
-              <Route path="*" element={<Navigate to={session ? "/" : "/login/email"} replace />} />
+              <Route
+                path="*"
+                element={<Navigate to={session ? "/todo" : "/login/email"} replace />}
+              />
             </Routes>
           </div>
         </main>
@@ -294,6 +312,23 @@ function App() {
               <Routes>
                 <Route
                   path="/"
+                  element={<Navigate to={session ? "/todo" : "/login/email"} replace />}
+                />
+                <Route
+                  path="/dashboard"
+                  element={
+                    session ? (
+                      <PlaceholderPage
+                        title="概览面板正在整理"
+                        description="这里后续会放任务统计、今日重点、AI 使用概况和提醒概览。当前先把导航和页面结构拆清楚。"
+                      />
+                    ) : (
+                      <Navigate to="/login/email" replace />
+                    )
+                  }
+                />
+                <Route
+                  path="/todo"
                   element={
                     session ? (
                       <TodoShellPage session={session} />
@@ -302,9 +337,42 @@ function App() {
                     )
                   }
                 />
+                <Route
+                  path="/ai"
+                  element={
+                    session ? (
+                      <AiChatPage session={session} />
+                    ) : (
+                      <Navigate to="/login/email" replace />
+                    )
+                  }
+                />
+                <Route
+                  path="/notice"
+                  element={
+                    session ? (
+                      <PlaceholderPage
+                        title="提醒中心即将接入"
+                        description="邮件提醒、Web Push 推送、任务到期前通知都会独立收敛到这里，而不是继续堆在任务页里。"
+                      />
+                    ) : (
+                      <Navigate to="/login/email" replace />
+                    )
+                  }
+                />
+                <Route
+                  path="/settings"
+                  element={
+                    session ? (
+                      <SettingsPage session={session} />
+                    ) : (
+                      <Navigate to="/login/email" replace />
+                    )
+                  }
+                />
                 <Route
                   path="*"
-                  element={<Navigate to={session ? "/" : "/login/email"} replace />}
+                  element={<Navigate to={session ? "/todo" : "/login/email"} replace />}
                 />
               </Routes>
             </div>

apps/web/src/components/ai/ai-shared.ts

@@ -0,0 +1,72 @@
+import type { UpsertWebAiBindingInput, WebAiBindingSummary, WebAiChannel } from "@/services/ai-api";
+
+export type AiBindingFormState = {
+  providerName: string;
+  model: string;
+  endpoint: string;
+  apiKey: string;
+  configId: string;
+  configName: string;
+  isEnabled: boolean;
+};
+
+export const CHANNEL_ORDER: WebAiChannel[] = ["USER_KEY", "ASTRBOT", "PUBLIC_POOL"];
+
+export const CHANNEL_META: Record<
+  WebAiChannel,
+  {
+    title: string;
+    description: string;
+    accentClassName: string;
+  }
+> = {
+  USER_KEY: {
+    title: "自备厂商",
+    description: "用户自行接入 OpenAI-Compatible 服务",
+    accentClassName: "from-sky-500/15 via-transparent to-sky-500/5"
+  },
+  ASTRBOT: {
+    title: "AstrBot",
+    description: "复用你在 AstrBot 中维护的模型配置",
+    accentClassName: "from-amber-500/15 via-transparent to-amber-500/5"
+  },
+  PUBLIC_POOL: {
+    title: "公共 AI",
+    description: "使用管理员开放的站点公共通道",
+    accentClassName: "from-emerald-500/15 via-transparent to-emerald-500/5"
+  }
+};
+
+export function createAiBindingFormState(binding?: WebAiBindingSummary | null): AiBindingFormState {
+  return {
+    providerName: binding?.providerName ?? "",
+    model: binding?.model ?? "",
+    endpoint: binding?.endpoint ?? "",
+    apiKey: "",
+    configId: binding?.configId ?? "",
+    configName: binding?.configName ?? "",
+    isEnabled: binding?.isEnabled ?? true
+  };
+}
+
+export function trimAiOptionalValue(value: string): string | undefined {
+  const normalized = value.trim();
+  return normalized.length > 0 ? normalized : undefined;
+}
+
+export function buildAiBindingPayload(
+  channel: Exclude<WebAiChannel, "PUBLIC_POOL">,
+  formState: AiBindingFormState,
+  currentBinding: WebAiBindingSummary | null
+): UpsertWebAiBindingInput {
+  return {
+    channel,
+    providerName: trimAiOptionalValue(formState.providerName),
+    model: trimAiOptionalValue(formState.model),
+    endpoint: trimAiOptionalValue(formState.endpoint),
+    configId: trimAiOptionalValue(formState.configId),
+    configName: trimAiOptionalValue(formState.configName),
+    apiKey: trimAiOptionalValue(formState.apiKey) ?? undefined,
+    isEnabled: formState.isEnabled ?? currentBinding?.isEnabled ?? true
+  };
+}

apps/web/src/pages/ai-chat-page.tsx

@@ -0,0 +1,539 @@
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import type { KeyboardEvent } from "react";
+import {
+  Bot,
+  CircleAlert,
+  Globe2,
+  KeyRound,
+  LoaderCircle,
+  PlugZap,
+  SendHorizontal
+} from "lucide-react";
+import { useNavigate } from "react-router-dom";
+import { Button } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
+import {
+  chatWithAi,
+  listAiBindings,
+  type WebAiBindingSummary,
+  type WebAiBindingsResponse,
+  type WebAiChannel,
+  type WebAiLocalTaskContextItem,
+  WebAiApiError
+} from "@/services/ai-api";
+import {
+  deleteLocalAiChatSession,
+  listLocalAiChatSessions,
+  saveLocalAiChatSession,
+  type LocalAiChatMessageRecord
+} from "@/services/local-ai-chat-repo";
+import { listLocalTasksByUser } from "@/services/local-task-repo";
+import type { WebSession } from "@/services/session-storage";
+import { CHANNEL_META, CHANNEL_ORDER } from "@/components/ai/ai-shared";
+
+type AiChatPageProps = {
+  session: WebSession;
+};
+
+type AiMessageRecord = LocalAiChatMessageRecord;
+
+function createEmptyMessages(): Record<WebAiChannel, AiMessageRecord[]> {
+  return {
+    USER_KEY: [],
+    ASTRBOT: [],
+    PUBLIC_POOL: []
+  };
+}
+
+function createEmptySessionIds(): Partial<Record<WebAiChannel, string>> {
+  return {};
+}
+
+function formatTimeLabel(date = new Date()): string {
+  return date.toLocaleTimeString("zh-CN", {
+    hour: "2-digit",
+    minute: "2-digit"
+  });
+}
+
+function appendMessage(
+  records: Record<WebAiChannel, AiMessageRecord[]>,
+  channel: WebAiChannel,
+  message: AiMessageRecord
+): Record<WebAiChannel, AiMessageRecord[]> {
+  return {
+    ...records,
+    [channel]: [...records[channel], message]
+  };
+}
+
+function buildLocalTaskContext(
+  items: Awaited<ReturnType<typeof listLocalTasksByUser>>
+): WebAiLocalTaskContextItem[] {
+  return items
+    .filter((item) => item.status === "TODO" || item.status === "IN_PROGRESS")
+    .slice(0, 20)
+    .map((item) => ({
+      id: item.id,
+      title: item.title,
+      priority: item.priority,
+      status: item.status,
+      ddlAt: item.ddlAt,
+      contentText: item.contentText,
+      updatedAt: item.updatedAt
+    }));
+}
+
+export function AiChatPage({ session }: AiChatPageProps) {
+  const navigate = useNavigate();
+  const [bindingsResponse, setBindingsResponse] = useState<WebAiBindingsResponse | null>(null);
+  const [loadingBindings, setLoadingBindings] = useState(true);
+  const [refreshingBindings, setRefreshingBindings] = useState(false);
+  const [activeChannel, setActiveChannel] = useState<WebAiChannel>("USER_KEY");
+  const [messagesByChannel, setMessagesByChannel] = useState<
+    Record<WebAiChannel, AiMessageRecord[]>
+  >(() => createEmptyMessages());
+  const [sessionIds, setSessionIds] = useState<Partial<Record<WebAiChannel, string>>>(() =>
+    createEmptySessionIds()
+  );
+  const [draftMessage, setDraftMessage] = useState("");
+  const [sending, setSending] = useState(false);
+  const [loadError, setLoadError] = useState<string | null>(null);
+  const [historyLoaded, setHistoryLoaded] = useState(false);
+  const messagesEndRef = useRef<HTMLDivElement | null>(null);
+
+  const bindingMap = useMemo(() => {
+    const map = new Map<WebAiChannel, WebAiBindingSummary>();
+    for (const binding of bindingsResponse?.bindings ?? []) {
+      map.set(binding.channel, binding);
+    }
+    return map;
+  }, [bindingsResponse]);
+
+  const currentBinding =
+    activeChannel === "PUBLIC_POOL" ? null : (bindingMap.get(activeChannel) ?? null);
+  const publicPool = bindingsResponse?.publicPool ?? null;
+  const currentMessages = messagesByChannel[activeChannel];
+
+  const loadBindings = useCallback(async (): Promise<void> => {
+    setRefreshingBindings(true);
+    setLoadError(null);
+
+    try {
+      const response = await listAiBindings(session);
+      setBindingsResponse(response);
+    } catch (error) {
+      setLoadError(error instanceof Error ? error.message : "AI 配置加载失败");
+    } finally {
+      setLoadingBindings(false);
+      setRefreshingBindings(false);
+    }
+  }, [session]);
+
+  useEffect(() => {
+    void loadBindings();
+  }, [loadBindings]);
+
+  useEffect(() => {
+    let cancelled = false;
+
+    async function loadLocalHistory(): Promise<void> {
+      try {
+        const records = await listLocalAiChatSessions(session.user.id);
+        if (cancelled) {
+          return;
+        }
+
+        const nextMessages = createEmptyMessages();
+        const nextSessionIds = createEmptySessionIds();
+
+        for (const record of records) {
+          nextMessages[record.channel] = record.messages;
+          if (record.sessionId) {
+            nextSessionIds[record.channel] = record.sessionId;
+          }
+        }
+
+        setMessagesByChannel(nextMessages);
+        setSessionIds(nextSessionIds);
+      } finally {
+        if (!cancelled) {
+          setHistoryLoaded(true);
+        }
+      }
+    }
+
+    setHistoryLoaded(false);
+    void loadLocalHistory();
+
+    return () => {
+      cancelled = true;
+    };
+  }, [session.user.id]);
+
+  useEffect(() => {
+    if (!historyLoaded) {
+      return;
+    }
+
+    void Promise.all(
+      CHANNEL_ORDER.map(async (channel) => {
+        const messages = messagesByChannel[channel];
+        const sessionId = sessionIds[channel] ?? null;
+
+        if (messages.length === 0 && sessionId === null) {
+          await deleteLocalAiChatSession(session.user.id, channel);
+          return;
+        }
+
+        await saveLocalAiChatSession({
+          userId: session.user.id,
+          channel,
+          sessionId,
+          messages
+        });
+      })
+    );
+  }, [historyLoaded, messagesByChannel, session.user.id, sessionIds]);
+
+  useEffect(() => {
+    messagesEndRef.current?.scrollIntoView({
+      block: "end",
+      behavior: "smooth"
+    });
+  }, [activeChannel, currentMessages.length]);
+
+  const sendBlockedReason = useMemo(() => {
+    if (activeChannel === "PUBLIC_POOL") {
+      if (!publicPool?.enabled) {
+        return "管理员尚未开放公共 AI。";
+      }
+
+      return null;
+    }
+
+    if (!currentBinding) {
+      return activeChannel === "USER_KEY"
+        ? "你还没有配置自备厂商，请先前往系统设置 > AI 配置。"
+        : "你还没有配置 AstrBot，请先前往系统设置 > AI 配置。";
+    }
+
+    if (!currentBinding.isEnabled) {
+      return "当前渠道已关闭，请先在系统设置 > AI 配置中启用。";
+    }
+
+    return null;
+  }, [activeChannel, currentBinding, publicPool]);
+
+  async function handleSendMessage(): Promise<void> {
+    const message = draftMessage.trim();
+    if (!message || sendBlockedReason || sending) {
+      return;
+    }
+
+    const channel = activeChannel;
+    setSending(true);
+    setDraftMessage("");
+    setMessagesByChannel((current) =>
+      appendMessage(current, channel, {
+        id: crypto.randomUUID(),
+        role: "user",
+        content: message,
+        meta: formatTimeLabel()
+      })
+    );
+
+    try {
+      const localTasks = buildLocalTaskContext(await listLocalTasksByUser(session.user.id));
+      const response = await chatWithAi(session, {
+        channel,
+        message,
+        sessionId: sessionIds[channel],
+        localTasks
+      });
+
+      setSessionIds((current) => ({
+        ...current,
+        [channel]: response.sessionId ?? current[channel]
+      }));
+      setMessagesByChannel((current) =>
+        appendMessage(current, channel, {
+          id: crypto.randomUUID(),
+          role: "assistant",
+          content: response.content,
+          meta: `${CHANNEL_META[response.channel].title} · ${response.providerName}${response.model ? ` · ${response.model}` : ""}`
+        })
+      );
+    } catch (error) {
+      const apiError =
+        error instanceof WebAiApiError
+          ? error
+          : new WebAiApiError(error instanceof Error ? error.message : "AI 请求失败");
+      const firstAttempt = apiError.attempts?.find((item) => item.reasonMessage);
+      const content =
+        firstAttempt?.reasonMessage && firstAttempt.reasonMessage !== apiError.message
+          ? `${apiError.message}\n${firstAttempt.reasonMessage}`
+          : apiError.message;
+
+      setMessagesByChannel((current) =>
+        appendMessage(current, channel, {
+          id: crypto.randomUUID(),
+          role: "system",
+          content,
+          meta: "调用失败"
+        })
+      );
+    } finally {
+      setSending(false);
+    }
+  }
+
+  function handleDraftKeyDown(event: KeyboardEvent<HTMLTextAreaElement>): void {
+    if (event.key !== "Enter" || event.shiftKey || event.nativeEvent.isComposing) {
+      return;
+    }
+
+    event.preventDefault();
+    void handleSendMessage();
+  }
+
+  return (
+    <section className="space-y-4">
+      <div className="rounded-[2rem] border border-border/70 bg-card/92 p-6 shadow-[0_24px_80px_-48px_rgba(15,23,42,0.55)]">
+        <div className="flex flex-col gap-4 lg:flex-row lg:items-end lg:justify-between">
+          <div>
+            <div className="flex items-center gap-2 text-sm font-medium text-primary">
+              <Bot className="size-4" />
+              AI 助手
+            </div>
+            <h1 className="mt-2 text-2xl font-semibold tracking-tight text-foreground">
+              在独立页面中发起 AI 对话
+            </h1>
+            <p className="mt-2 text-sm leading-7 text-muted-foreground">
+              聊天页面只负责问答和任务统筹。所有渠道配置统一放在系统设置中的 AI 配置页面。
+            </p>
+          </div>
+
+          <div className="flex gap-3">
+            <Button type="button" variant="outline" onClick={() => navigate("/settings")}>
+              前往 AI 配置
+            </Button>
+            <Button
+              type="button"
+              variant="outline"
+              onClick={() => void loadBindings()}
+              disabled={refreshingBindings}
+            >
+              {refreshingBindings ? (
+                <>
+                  <LoaderCircle className="size-4 animate-spin" />
+                  刷新中
+                </>
+              ) : (
+                "刷新状态"
+              )}
+            </Button>
+          </div>
+        </div>
+      </div>
+
+      <div className="grid gap-4 xl:grid-cols-[320px_minmax(0,1fr)]">
+        <aside className="space-y-4 rounded-[2rem] border border-border/70 bg-card/92 p-4 shadow-[0_24px_80px_-48px_rgba(15,23,42,0.55)]">
+          <div>
+            <div className="text-sm font-semibold text-foreground">选择渠道</div>
+            <div className="mt-1 text-xs leading-6 text-muted-foreground">
+              前端只会使用你当前明确选中的那一个渠道。
+            </div>
+          </div>
+
+          <div className="space-y-2">
+            {CHANNEL_ORDER.map((channel) => {
+              const selected = activeChannel === channel;
+              const binding = channel === "PUBLIC_POOL" ? null : (bindingMap.get(channel) ?? null);
+              const enabled =
+                channel === "PUBLIC_POOL"
+                  ? Boolean(publicPool?.enabled)
+                  : Boolean(binding?.isEnabled);
+              const statusLabel =
+                channel === "PUBLIC_POOL"
+                  ? publicPool?.enabled
+                    ? "可使用"
+                    : "未开放"
+                  : binding
+                    ? enabled
+                      ? "已启用"
+                      : "已停用"
+                    : "未配置";
+              const Icon =
+                channel === "PUBLIC_POOL" ? Globe2 : channel === "ASTRBOT" ? PlugZap : KeyRound;
+
+              return (
+                <button
+                  key={channel}
+                  type="button"
+                  className={cn(
+                    "w-full rounded-2xl border bg-gradient-to-br px-3 py-3 text-left transition-all",
+                    CHANNEL_META[channel].accentClassName,
+                    selected
+                      ? "border-primary/45 ring-2 ring-primary/15"
+                      : "border-border/70 hover:border-primary/25 hover:bg-muted/35"
+                  )}
+                  onClick={() => setActiveChannel(channel)}
+                >
+                  <div className="flex items-start justify-between gap-3">
+                    <div className="flex items-start gap-3">
+                      <span className="rounded-xl bg-background/85 p-2 text-primary shadow-sm">
+                        <Icon className="size-4" />
+                      </span>
+                      <div>
+                        <div className="text-sm font-semibold text-foreground">
+                          {CHANNEL_META[channel].title}
+                        </div>
+                        <div className="mt-1 text-xs leading-5 text-muted-foreground">
+                          {CHANNEL_META[channel].description}
+                        </div>
+                      </div>
+                    </div>
+                    <span
+                      className={cn(
+                        "rounded-full border px-2 py-0.5 text-[11px] font-medium",
+                        enabled
+                          ? "border-emerald-500/25 bg-emerald-500/10 text-emerald-700 dark:text-emerald-300"
+                          : "border-border bg-background text-muted-foreground"
+                      )}
+                    >
+                      {statusLabel}
+                    </span>
+                  </div>
+                </button>
+              );
+            })}
+          </div>
+
+          {loadError ? (
+            <div className="rounded-2xl border border-destructive/15 bg-destructive/8 px-3 py-2 text-sm text-destructive">
+              {loadError}
+            </div>
+          ) : null}
+
+          <div className="rounded-2xl border border-border/70 bg-background/80 px-3 py-3 text-xs leading-6 text-muted-foreground">
+            <div className="font-medium text-foreground">当前渠道状态</div>
+            <div className="mt-1">
+              {loadingBindings
+                ? "正在加载配置..."
+                : activeChannel === "PUBLIC_POOL"
+                  ? publicPool?.enabled
+                    ? "公共 AI 已开放，可直接发送。"
+                    : "公共 AI 未开放。"
+                  : currentBinding
+                    ? currentBinding.isEnabled
+                      ? "已配置并启用。"
+                      : "已配置，但当前关闭。"
+                    : "尚未配置。"}
+            </div>
+          </div>
+        </aside>
+
+        <div className="flex min-h-[720px] flex-col overflow-hidden rounded-[2rem] border border-border/70 bg-card/92 shadow-[0_24px_80px_-48px_rgba(15,23,42,0.55)]">
+          <div className="border-b border-border/70 px-5 py-4">
+            <div className="text-sm font-semibold text-foreground">
+              {CHANNEL_META[activeChannel].title}
+            </div>
+            <div className="mt-1 text-xs text-muted-foreground">
+              发送消息时会自动附带你当前未完成任务的摘要。
+            </div>
+          </div>
+
+          <div className="min-h-0 flex-1 space-y-3 overflow-y-auto px-5 py-4">
+            {currentMessages.length === 0 ? (
+              <div className="rounded-2xl border border-dashed border-border bg-muted/35 p-4 text-sm leading-7 text-muted-foreground">
+                <div className="font-medium text-foreground">暂无对话记录。</div>
+                <div className="mt-1">
+                  你可以输入“帮我根据当前未完成任务安排今天下午的执行顺序”直接开始。
+                </div>
+              </div>
+            ) : (
+              currentMessages.map((message) => (
+                <div
+                  key={message.id}
+                  className={cn(
+                    "max-w-[92%] rounded-2xl px-4 py-3 text-sm leading-7 shadow-sm",
+                    message.role === "user"
+                      ? "ml-auto bg-primary text-primary-foreground"
+                      : message.role === "assistant"
+                        ? "border border-border/70 bg-background text-foreground"
+                        : "border border-destructive/15 bg-destructive/8 text-foreground"
+                  )}
+                >
+                  <div className="whitespace-pre-wrap break-words">{message.content}</div>
+                  {message.meta ? (
+                    <div
+                      className={cn(
+                        "mt-2 text-[11px]",
+                        message.role === "user"
+                          ? "text-primary-foreground/80"
+                          : "text-muted-foreground"
+                      )}
+                    >
+                      {message.meta}
+                    </div>
+                  ) : null}
+                </div>
+              ))
+            )}
+            <div ref={messagesEndRef} />
+          </div>
+
+          <div className="border-t border-border/70 p-5">
+            {sendBlockedReason ? (
+              <div className="mb-3 rounded-2xl border border-amber-500/15 bg-amber-500/10 px-3 py-2 text-sm leading-6 text-amber-700 dark:text-amber-300">
+                {sendBlockedReason}
+              </div>
+            ) : null}
+
+            <textarea
+              value={draftMessage}
+              onChange={(event) => setDraftMessage(event.target.value)}
+              onKeyDown={handleDraftKeyDown}
+              placeholder="输入你的问题，例如：结合我当前待办，帮我排一下今天的优先级。"
+              className="min-h-[140px] w-full rounded-2xl border border-border bg-background px-4 py-3 text-sm leading-7 outline-none transition-colors placeholder:text-muted-foreground focus:border-primary/40"
+            />
+
+            <div className="mt-3 flex items-center justify-between gap-3">
+              <div className="flex items-center gap-2 text-xs text-muted-foreground">
+                <CircleAlert className="size-4" />
+                <span>当前只会使用你选中的渠道，不会在前端静默切换。</span>
+              </div>
+              <div className="flex gap-3">
+                {sendBlockedReason ? (
+                  <Button type="button" variant="outline" onClick={() => navigate("/settings")}>
+                    去系统设置
+                  </Button>
+                ) : null}
+                <Button
+                  type="button"
+                  onClick={() => void handleSendMessage()}
+                  disabled={
+                    sending || draftMessage.trim().length === 0 || sendBlockedReason !== null
+                  }
+                >
+                  {sending ? (
+                    <>
+                      <LoaderCircle className="size-4 animate-spin" />
+                      发送中
+                    </>
+                  ) : (
+                    <>
+                      <SendHorizontal className="size-4" />
+                      发送
+                    </>
+                  )}
+                </Button>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </section>
+  );
+}

apps/web/src/pages/placeholder-page.tsx

@@ -0,0 +1,26 @@
+import type { LucideIcon } from "lucide-react";
+import { Construction } from "lucide-react";
+
+type PlaceholderPageProps = {
+  title: string;
+  description: string;
+  icon?: LucideIcon;
+};
+
+export function PlaceholderPage({
+  title,
+  description,
+  icon: Icon = Construction
+}: PlaceholderPageProps) {
+  return (
+    <section className="rounded-[2rem] border border-border/70 bg-card/92 p-8 shadow-[0_24px_80px_-48px_rgba(15,23,42,0.55)]">
+      <div className="mx-auto max-w-2xl text-center">
+        <div className="mx-auto flex h-16 w-16 items-center justify-center rounded-2xl bg-primary/10 text-primary">
+          <Icon className="size-7" />
+        </div>
+        <h1 className="mt-5 text-2xl font-semibold tracking-tight text-foreground">{title}</h1>
+        <p className="mt-3 text-sm leading-7 text-muted-foreground">{description}</p>
+      </div>
+    </section>
+  );
+}

apps/web/src/pages/settings-page.tsx

@@ -0,0 +1,549 @@
+import { useCallback, useEffect, useMemo, useState } from "react";
+import { CheckCircle2, Globe2, KeyRound, LoaderCircle, PlugZap, Settings2 } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
+import {
+  listAiBindings,
+  testAiBinding,
+  upsertAiBinding,
+  type WebAiBindingSummary,
+  type WebAiBindingsResponse,
+  type WebAiChannel
+} from "@/services/ai-api";
+import type { WebSession } from "@/services/session-storage";
+import {
+  buildAiBindingPayload,
+  createAiBindingFormState,
+  type AiBindingFormState
+} from "@/components/ai/ai-shared";
+
+type SettingsPageProps = {
+  session: WebSession;
+};
+
+type SettingsTab = "ai" | "general";
+
+type NoticeState = {
+  tone: "success" | "error";
+  message: string;
+};
+
+type ChannelNoticeState = NoticeState & {
+  detail?: string;
+};
+
+const TODOLIST_VERSION = "0.1.0";
+
+function AiConfigCard({
+  channel,
+  title,
+  description,
+  icon: Icon,
+  formState,
+  onChange,
+  onSave,
+  saving,
+  binding,
+  notice
+}: {
+  channel: Exclude<WebAiChannel, "PUBLIC_POOL">;
+  title: string;
+  description: string;
+  icon: typeof KeyRound;
+  formState: AiBindingFormState;
+  onChange: React.Dispatch<React.SetStateAction<AiBindingFormState>>;
+  onSave: () => Promise<void>;
+  saving: boolean;
+  binding: WebAiBindingSummary | null;
+  notice: ChannelNoticeState | null;
+}) {
+  return (
+    <section className="rounded-[2rem] border border-border/70 bg-card/92 p-5 shadow-[0_24px_80px_-48px_rgba(15,23,42,0.55)]">
+      <div className="flex items-start justify-between gap-3">
+        <div className="flex items-start gap-3">
+          <span className="rounded-2xl bg-primary/10 p-3 text-primary">
+            <Icon className="size-5" />
+          </span>
+          <div>
+            <h2 className="text-lg font-semibold tracking-tight text-foreground">{title}</h2>
+            <p className="mt-1 text-sm leading-6 text-muted-foreground">{description}</p>
+          </div>
+        </div>
+        <span
+          className={cn(
+            "rounded-full border px-2 py-0.5 text-[11px] font-medium",
+            formState.isEnabled
+              ? "border-emerald-500/25 bg-emerald-500/10 text-emerald-700 dark:text-emerald-300"
+              : "border-border bg-background text-muted-foreground"
+          )}
+        >
+          {formState.isEnabled ? "已启用" : "已停用"}
+        </span>
+      </div>
+
+      {notice ? (
+        <div
+          className={cn(
+            "mt-4 rounded-2xl border px-3 py-3 text-sm",
+            notice.tone === "success"
+              ? "border-emerald-500/20 bg-emerald-500/10 text-emerald-700 dark:text-emerald-300"
+              : "border-destructive/20 bg-destructive/10 text-destructive"
+          )}
+        >
+          <div className="flex items-start gap-2">
+            <CheckCircle2 className="mt-0.5 size-4 shrink-0" />
+            <div className="min-w-0">
+              <div>{notice.message}</div>
+              {notice.detail ? (
+                <div className="mt-1 text-xs leading-6 opacity-80">{notice.detail}</div>
+              ) : null}
+            </div>
+          </div>
+        </div>
+      ) : null}
+
+      <div className="mt-5 grid gap-3 sm:grid-cols-2">
+        <label className="space-y-1.5">
+          <span className="text-xs font-medium text-muted-foreground">服务商标识</span>
+          <input
+            className="h-10 w-full rounded-xl border border-border bg-background px-3 text-sm outline-none transition-colors focus:border-primary/40"
+            value={formState.providerName}
+            onChange={(event) =>
+              onChange((current) => ({
+                ...current,
+                providerName: event.target.value
+              }))
+            }
+            placeholder={channel === "USER_KEY" ? "如 openai / deepseek / dashscope" : "可选"}
+          />
+        </label>
+
+        <label className="space-y-1.5">
+          <span className="text-xs font-medium text-muted-foreground">模型</span>
+          <input
+            className="h-10 w-full rounded-xl border border-border bg-background px-3 text-sm outline-none transition-colors focus:border-primary/40"
+            value={formState.model}
+            onChange={(event) =>
+              onChange((current) => ({
+                ...current,
+                model: event.target.value
+              }))
+            }
+            placeholder={channel === "USER_KEY" ? "如 gpt-4o-mini" : "可选"}
+          />
+        </label>
+      </div>
+
+      <div className="mt-3 grid gap-3">
+        <label className="space-y-1.5">
+          <span className="text-xs font-medium text-muted-foreground">
+            {channel === "USER_KEY" ? "接口地址" : "AstrBot 地址"}
+          </span>
+          <input
+            className="h-10 w-full rounded-xl border border-border bg-background px-3 text-sm outline-none transition-colors focus:border-primary/40"
+            value={formState.endpoint}
+            onChange={(event) =>
+              onChange((current) => ({
+                ...current,
+                endpoint: event.target.value
+              }))
+            }
+            placeholder={
+              channel === "USER_KEY" ? "如 https://api.openai.com/v1" : "如 http://100.64.0.21:6185"
+            }
+          />
+        </label>
+
+        {channel === "ASTRBOT" ? (
+          <div className="grid gap-3 sm:grid-cols-2">
+            <label className="space-y-1.5">
+              <span className="text-xs font-medium text-muted-foreground">configId</span>
+              <input
+                className="h-10 w-full rounded-xl border border-border bg-background px-3 text-sm outline-none transition-colors focus:border-primary/40"
+                value={formState.configId}
+                onChange={(event) =>
+                  onChange((current) => ({
+                    ...current,
+                    configId: event.target.value
+                  }))
+                }
+                placeholder="如 default"
+              />
+            </label>
+
+            <label className="space-y-1.5">
+              <span className="text-xs font-medium text-muted-foreground">configName</span>
+              <input
+                className="h-10 w-full rounded-xl border border-border bg-background px-3 text-sm outline-none transition-colors focus:border-primary/40"
+                value={formState.configName}
+                onChange={(event) =>
+                  onChange((current) => ({
+                    ...current,
+                    configName: event.target.value
+                  }))
+                }
+                placeholder="可选"
+              />
+            </label>
+          </div>
+        ) : null}
+
+        <label className="space-y-1.5">
+          <span className="text-xs font-medium text-muted-foreground">
+            {channel === "USER_KEY" ? "API Key" : "AstrBot API Key"}
+          </span>
+          <input
+            className="h-10 w-full rounded-xl border border-border bg-background px-3 text-sm outline-none transition-colors focus:border-primary/40"
+            value={formState.apiKey}
+            onChange={(event) =>
+              onChange((current) => ({
+                ...current,
+                apiKey: event.target.value
+              }))
+            }
+            placeholder={binding?.hasApiKey ? "留空则保持当前密钥不变" : "请输入密钥"}
+          />
+          {binding?.maskedApiKey ? (
+            <div className="text-xs text-muted-foreground">
+              当前已保存密钥：{binding.maskedApiKey}
+            </div>
+          ) : null}
+        </label>
+      </div>
+
+      <label className="mt-3 flex items-center gap-2 rounded-2xl border border-border/70 bg-background/70 px-3 py-2 text-sm text-foreground">
+        <input
+          type="checkbox"
+          checked={formState.isEnabled}
+          onChange={(event) =>
+            onChange((current) => ({
+              ...current,
+              isEnabled: event.target.checked
+            }))
+          }
+        />
+        <span>保存后立即启用该渠道</span>
+      </label>
+
+      <div className="mt-4 flex items-center justify-between gap-3">
+        <p className="text-xs leading-6 text-muted-foreground">
+          {channel === "USER_KEY"
+            ? "该配置按用户单独保存，适合接入你自己的服务商密钥。"
+            : "该配置按用户单独保存，适合直接复用 AstrBot 中已有的模型能力。"}
+          <br />
+          测试基于你当前表单中的输入；如果测试失败，当前已保存并生效的旧配置不会被覆盖。
+        </p>
+
+        <Button type="button" onClick={() => void onSave()} disabled={saving}>
+          {saving ? (
+            <>
+              <LoaderCircle className="size-4 animate-spin" />
+              处理中
+            </>
+          ) : formState.isEnabled ? (
+            "测试并保存"
+          ) : (
+            "保存草稿"
+          )}
+        </Button>
+      </div>
+    </section>
+  );
+}
+
+export function SettingsPage({ session }: SettingsPageProps) {
+  const [activeTab, setActiveTab] = useState<SettingsTab>("ai");
+  const [bindingsResponse, setBindingsResponse] = useState<WebAiBindingsResponse | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [refreshing, setRefreshing] = useState(false);
+  const [notice, setNotice] = useState<NoticeState | null>(null);
+  const [savingChannel, setSavingChannel] = useState<WebAiChannel | null>(null);
+  const [channelNotices, setChannelNotices] = useState<
+    Partial<Record<Exclude<WebAiChannel, "PUBLIC_POOL">, ChannelNoticeState>>
+  >({});
+  const [userKeyForm, setUserKeyForm] = useState<AiBindingFormState>(() =>
+    createAiBindingFormState()
+  );
+  const [astrbotForm, setAstrbotForm] = useState<AiBindingFormState>(() =>
+    createAiBindingFormState()
+  );
+
+  const bindingMap = useMemo(() => {
+    const map = new Map<WebAiChannel, WebAiBindingSummary>();
+    for (const binding of bindingsResponse?.bindings ?? []) {
+      map.set(binding.channel, binding);
+    }
+    return map;
+  }, [bindingsResponse]);
+
+  const loadBindings = useCallback(async (): Promise<void> => {
+    setRefreshing(true);
+
+    try {
+      const response = await listAiBindings(session);
+      setBindingsResponse(response);
+      setUserKeyForm(
+        createAiBindingFormState(response.bindings.find((item) => item.channel === "USER_KEY"))
+      );
+      setAstrbotForm(
+        createAiBindingFormState(response.bindings.find((item) => item.channel === "ASTRBOT"))
+      );
+    } catch (error) {
+      setNotice({
+        tone: "error",
+        message: error instanceof Error ? error.message : "AI 配置加载失败"
+      });
+    } finally {
+      setLoading(false);
+      setRefreshing(false);
+    }
+  }, [session]);
+
+  useEffect(() => {
+    void loadBindings();
+  }, [loadBindings]);
+
+  useEffect(() => {
+    if (!notice) {
+      return;
+    }
+
+    const timer = window.setTimeout(() => {
+      setNotice(null);
+    }, 2800);
+
+    return () => {
+      window.clearTimeout(timer);
+    };
+  }, [notice]);
+
+  async function handleSaveChannel(channel: Exclude<WebAiChannel, "PUBLIC_POOL">): Promise<void> {
+    const formState = channel === "USER_KEY" ? userKeyForm : astrbotForm;
+    const binding = bindingMap.get(channel) ?? null;
+    const payload = buildAiBindingPayload(channel, formState, binding);
+
+    try {
+      setSavingChannel(channel);
+      setChannelNotices((current) => ({
+        ...current,
+        [channel]: undefined
+      }));
+      if (payload.isEnabled) {
+        const testResult = await testAiBinding(session, payload);
+        if (!testResult.success) {
+          setChannelNotices((current) => ({
+            ...current,
+            [channel]: {
+              tone: "error",
+              message: `连通性测试未通过：${testResult.message}`,
+              detail: binding
+                ? "测试的是你当前编辑中的草稿配置。由于未保存，系统仍会继续使用上一份已保存配置，所以聊天可能依然正常。"
+                : "当前还没有已保存配置。请先修正表单中的地址、模型或密钥后再测试。"
+            }
+          }));
+          return;
+        }
+      }
+
+      await upsertAiBinding(session, payload);
+      setChannelNotices((current) => ({
+        ...current,
+        [channel]: {
+          tone: "success",
+          message:
+            channel === "USER_KEY"
+              ? payload.isEnabled
+                ? "自备厂商连通性测试通过，配置已保存。"
+                : "自备厂商配置草稿已保存。"
+              : payload.isEnabled
+                ? "AstrBot 连通性测试通过，配置已保存。"
+                : "AstrBot 配置草稿已保存。",
+          detail: payload.isEnabled
+            ? "之后 AI 助手会使用这份刚保存的配置。"
+            : "当前只是保存草稿，未启用时不会参与实际聊天。"
+        }
+      }));
+      if (channel === "USER_KEY") {
+        setUserKeyForm((current) => ({
+          ...current,
+          apiKey: ""
+        }));
+      } else {
+        setAstrbotForm((current) => ({
+          ...current,
+          apiKey: ""
+        }));
+      }
+      await loadBindings();
+    } catch (error) {
+      setChannelNotices((current) => ({
+        ...current,
+        [channel]: {
+          tone: "error",
+          message: error instanceof Error ? error.message : "AI 配置保存失败"
+        }
+      }));
+    } finally {
+      setSavingChannel(null);
+    }
+  }
+
+  return (
+    <section className="space-y-4">
+      <div className="rounded-[2rem] border border-border/70 bg-card/92 p-6 shadow-[0_24px_80px_-48px_rgba(15,23,42,0.55)]">
+        <div className="flex flex-col gap-4 lg:flex-row lg:items-end lg:justify-between">
+          <div>
+            <div className="flex items-center gap-2 text-sm font-medium text-primary">
+              <Settings2 className="size-4" />
+              系统设置
+            </div>
+            <h1 className="mt-2 text-2xl font-semibold tracking-tight text-foreground">
+              统一管理 AI 配置与系统选项
+            </h1>
+            <p className="mt-2 text-sm leading-7 text-muted-foreground">
+              你可以在这里维护自备厂商、AstrBot、公共 AI 的使用状态，后续也会扩展提醒偏好、
+              界面设置与存储信息等系统能力。
+            </p>
+            <div className="mt-3 inline-flex items-center rounded-full border border-border/70 bg-background/80 px-3 py-1 text-xs font-medium text-muted-foreground">
+              TodoList v{TODOLIST_VERSION}
+            </div>
+          </div>
+
+          <Button
+            type="button"
+            variant="outline"
+            onClick={() => void loadBindings()}
+            disabled={refreshing}
+          >
+            {refreshing ? (
+              <>
+                <LoaderCircle className="size-4 animate-spin" />
+                刷新中
+              </>
+            ) : (
+              "刷新配置"
+            )}
+          </Button>
+        </div>
+      </div>
+
+      <div className="flex flex-wrap gap-3">
+        <Button
+          type="button"
+          variant={activeTab === "ai" ? "default" : "outline"}
+          onClick={() => setActiveTab("ai")}
+        >
+          AI 配置
+        </Button>
+        <Button
+          type="button"
+          variant={activeTab === "general" ? "default" : "outline"}
+          onClick={() => setActiveTab("general")}
+        >
+          其他设置
+        </Button>
+      </div>
+
+      {notice ? (
+        <div
+          className={cn(
+            "flex items-start gap-2 rounded-2xl border px-3 py-2 text-sm",
+            notice.tone === "success"
+              ? "border-emerald-500/20 bg-emerald-500/10 text-emerald-700 dark:text-emerald-300"
+              : "border-destructive/20 bg-destructive/10 text-destructive"
+          )}
+        >
+          <CheckCircle2 className="mt-0.5 size-4 shrink-0" />
+          <span>{notice.message}</span>
+        </div>
+      ) : null}
+
+      {activeTab === "ai" ? (
+        loading ? (
+          <div className="rounded-[2rem] border border-border/70 bg-card/92 p-6 text-sm text-muted-foreground shadow-[0_24px_80px_-48px_rgba(15,23,42,0.55)]">
+            正在加载 AI 配置...
+          </div>
+        ) : (
+          <div className="space-y-4">
+            <AiConfigCard
+              channel="USER_KEY"
+              title="自备厂商"
+              description="当前支持 OpenAI-Compatible 接口。Google 原生协议、阿里云原生协议将单独适配。"
+              icon={KeyRound}
+              formState={userKeyForm}
+              onChange={setUserKeyForm}
+              onSave={() => handleSaveChannel("USER_KEY")}
+              saving={savingChannel === "USER_KEY"}
+              binding={bindingMap.get("USER_KEY") ?? null}
+              notice={channelNotices.USER_KEY ?? null}
+            />
+
+            <AiConfigCard
+              channel="ASTRBOT"
+              title="AstrBot"
+              description="填写 AstrBot 地址与 API Key 后，即可在 AI 助手页面中使用你的 AstrBot 渠道。"
+              icon={PlugZap}
+              formState={astrbotForm}
+              onChange={setAstrbotForm}
+              onSave={() => handleSaveChannel("ASTRBOT")}
+              saving={savingChannel === "ASTRBOT"}
+              binding={bindingMap.get("ASTRBOT") ?? null}
+              notice={channelNotices.ASTRBOT ?? null}
+            />
+
+            <section className="rounded-[2rem] border border-border/70 bg-card/92 p-5 shadow-[0_24px_80px_-48px_rgba(15,23,42,0.55)]">
+              <div className="flex items-start justify-between gap-3">
+                <div className="flex items-start gap-3">
+                  <span className="rounded-2xl bg-primary/10 p-3 text-primary">
+                    <Globe2 className="size-5" />
+                  </span>
+                  <div>
+                    <h2 className="text-lg font-semibold tracking-tight text-foreground">
+                      公共 AI
+                    </h2>
+                    <p className="mt-1 text-sm leading-6 text-muted-foreground">
+                      该渠道由管理员统一维护，普通用户仅可查看状态和使用，不可修改。
+                    </p>
+                  </div>
+                </div>
+                <span
+                  className={cn(
+                    "rounded-full border px-2 py-0.5 text-[11px] font-medium",
+                    bindingsResponse?.publicPool?.enabled
+                      ? "border-emerald-500/25 bg-emerald-500/10 text-emerald-700 dark:text-emerald-300"
+                      : "border-border bg-background text-muted-foreground"
+                  )}
+                >
+                  {bindingsResponse?.publicPool?.enabled ? "已开放" : "未开放"}
+                </span>
+              </div>
+
+              <div className="mt-4 rounded-2xl border border-border/70 bg-background/80 p-4 text-sm leading-7 text-muted-foreground">
+                <div>
+                  提供商：
+                  <span className="ml-2 text-foreground">
+                    {bindingsResponse?.publicPool?.providerName || "未设置"}
+                  </span>
+                </div>
+                <div>
+                  模型：
+                  <span className="ml-2 text-foreground">
+                    {bindingsResponse?.publicPool?.model || "未设置"}
+                  </span>
+                </div>
+              </div>
+            </section>
+          </div>
+        )
+      ) : (
+        <section className="rounded-[2rem] border border-border/70 bg-card/92 p-8 shadow-[0_24px_80px_-48px_rgba(15,23,42,0.55)]">
+          <h2 className="text-xl font-semibold tracking-tight text-foreground">其他设置</h2>
+          <p className="mt-3 text-sm leading-7 text-muted-foreground">
+            这里后续会接入站点外观、提醒偏好、存储配额展示等系统设置项。当前先把 AI
+            配置独立出来，避免继续堆在任务页面。
+          </p>
+        </section>
+      )}
+    </section>
+  );
+}

apps/web/src/services/ai-api.ts

@@ -0,0 +1,198 @@
+import type { WebSession } from "@/services/session-storage";
+
+export type WebAiChannel = "USER_KEY" | "ASTRBOT" | "PUBLIC_POOL";
+
+export type WebAiRouteAttempt = {
+  channel: WebAiChannel;
+  providerName: string | null;
+  model: string | null;
+  status: "skipped" | "failed" | "success";
+  reasonCode: string | null;
+  reasonMessage: string | null;
+};
+
+export type WebAiBindingSummary = {
+  id: string;
+  channel: WebAiChannel;
+  providerName: string;
+  model: string | null;
+  configId: string | null;
+  configName: string | null;
+  endpoint: string | null;
+  isEnabled: boolean;
+  hasApiKey: boolean;
+  maskedApiKey: string | null;
+  updatedAt: string;
+};
+
+export type WebAiBindingsResponse = {
+  routeOrder: WebAiChannel[];
+  bindings: WebAiBindingSummary[];
+  publicPool: {
+    enabled: boolean;
+    providerName: string | null;
+    model: string | null;
+    hasApiKey: boolean;
+  } | null;
+};
+
+export type UpsertWebAiBindingInput = {
+  channel: Exclude<WebAiChannel, "PUBLIC_POOL">;
+  providerName?: string;
+  model?: string;
+  configId?: string;
+  configName?: string;
+  endpoint?: string;
+  apiKey?: string;
+  isEnabled?: boolean;
+};
+
+export type TestWebAiBindingResponse =
+  | {
+      success: true;
+      channel: Exclude<WebAiChannel, "PUBLIC_POOL">;
+      providerName: string;
+      model: string | null;
+      contentPreview: string;
+    }
+  | {
+      success: false;
+      channel: Exclude<WebAiChannel, "PUBLIC_POOL">;
+      providerName: string;
+      model: string | null;
+      code: string;
+      message: string;
+    };
+
+export type WebAiChatResponse = {
+  channel: WebAiChannel;
+  providerName: string;
+  model: string | null;
+  content: string;
+  sessionId: string | null;
+  attempts: WebAiRouteAttempt[];
+};
+
+export type WebAiLocalTaskContextItem = {
+  id: string;
+  title: string;
+  priority: "LOW" | "MEDIUM" | "HIGH" | "URGENT";
+  status: "TODO" | "IN_PROGRESS" | "DONE" | "ARCHIVED";
+  ddlAt: number | null;
+  contentText: string | null;
+  updatedAt: number;
+};
+
+export class WebAiApiError extends Error {
+  attempts: WebAiRouteAttempt[] | null;
+
+  constructor(message: string, attempts?: WebAiRouteAttempt[] | null) {
+    super(message);
+    this.name = "WebAiApiError";
+    this.attempts = attempts ?? null;
+  }
+}
+
+const DEFAULT_API_BASE_URL = "http://localhost:3000";
+
+function resolveApiBaseUrl(): string {
+  const envBaseUrl = import.meta.env.VITE_API_BASE_URL as string | undefined;
+  if (!envBaseUrl) {
+    return DEFAULT_API_BASE_URL;
+  }
+
+  return envBaseUrl.replace(/\/+$/, "");
+}
+
+function createHeaders(session: WebSession): HeadersInit {
+  return {
+    "Content-Type": "application/json",
+    Authorization: `Bearer ${session.accessToken}`,
+    "x-user-id": session.user.id
+  };
+}
+
+async function createApiError(response: Response): Promise<WebAiApiError> {
+  try {
+    const body = (await response.json()) as {
+      message?: string | string[];
+      attempts?: WebAiRouteAttempt[];
+    };
+    const message = Array.isArray(body.message)
+      ? body.message.join("；")
+      : typeof body.message === "string" && body.message.trim().length > 0
+        ? body.message
+        : `请求失败（${response.status}）`;
+    return new WebAiApiError(message, body.attempts ?? null);
+  } catch {
+    return new WebAiApiError(`请求失败（${response.status}）`);
+  }
+}
+export async function listAiBindings(session: WebSession): Promise<WebAiBindingsResponse> {
+  const response = await fetch(`${resolveApiBaseUrl()}/ai/bindings`, {
+    method: "GET",
+    headers: createHeaders(session)
+  });
+
+  if (!response.ok) {
+    throw await createApiError(response);
+  }
+
+  return (await response.json()) as WebAiBindingsResponse;
+}
+
+export async function upsertAiBinding(
+  session: WebSession,
+  payload: UpsertWebAiBindingInput
+): Promise<WebAiBindingSummary> {
+  const response = await fetch(`${resolveApiBaseUrl()}/ai/bindings`, {
+    method: "POST",
+    headers: createHeaders(session),
+    body: JSON.stringify(payload)
+  });
+
+  if (!response.ok) {
+    throw await createApiError(response);
+  }
+
+  return (await response.json()) as WebAiBindingSummary;
+}
+
+export async function testAiBinding(
+  session: WebSession,
+  payload: UpsertWebAiBindingInput
+): Promise<TestWebAiBindingResponse> {
+  const response = await fetch(`${resolveApiBaseUrl()}/ai/bindings/test`, {
+    method: "POST",
+    headers: createHeaders(session),
+    body: JSON.stringify(payload)
+  });
+
+  if (!response.ok) {
+    throw await createApiError(response);
+  }
+
+  return (await response.json()) as TestWebAiBindingResponse;
+}
+
+export async function chatWithAi(
+  session: WebSession,
+  payload: {
+    channel: WebAiChannel;
+    message: string;
+    sessionId?: string;
+    localTasks?: WebAiLocalTaskContextItem[];
+  }
+): Promise<WebAiChatResponse> {
+  const response = await fetch(`${resolveApiBaseUrl()}/ai/chat`, {
+    method: "POST",
+    headers: createHeaders(session),
+    body: JSON.stringify(payload)
+  });
+
+  if (!response.ok) {
+    throw await createApiError(response);
+  }
+
+  return (await response.json()) as WebAiChatResponse;
+}

apps/web/src/services/local-ai-chat-repo.ts

@@ -0,0 +1,98 @@
+import { localDb, type LocalAiChatSessionRecord } from "@/services/local-db";
+import type { WebAiChannel } from "@/services/ai-api";
+import {
+  decryptAiChatSessionRecord,
+  encryptAiChatSessionRecord
+} from "@/services/local-sensitive-codec";
+
+export type LocalAiChatMessageRecord = {
+  id: string;
+  role: "user" | "assistant" | "system";
+  content: string;
+  meta?: string;
+};
+
+export type SaveLocalAiChatSessionInput = {
+  userId: string;
+  channel: WebAiChannel;
+  sessionId: string | null;
+  messages: LocalAiChatMessageRecord[];
+};
+
+export type LocalAiChatSessionSnapshot = {
+  channel: WebAiChannel;
+  sessionId: string | null;
+  messages: LocalAiChatMessageRecord[];
+};
+
+function createSessionKey(userId: string, channel: WebAiChannel): string {
+  return `${userId}:${channel}`;
+}
+
+function parseMessages(messagesJson: string): LocalAiChatMessageRecord[] {
+  try {
+    const parsed = JSON.parse(messagesJson) as unknown;
+    if (!Array.isArray(parsed)) {
+      return [];
+    }
+
+    return parsed.filter((item): item is LocalAiChatMessageRecord => {
+      if (!item || typeof item !== "object") {
+        return false;
+      }
+
+      const record = item as Record<string, unknown>;
+      return (
+        typeof record["id"] === "string" &&
+        (record["role"] === "user" ||
+          record["role"] === "assistant" ||
+          record["role"] === "system") &&
+        typeof record["content"] === "string" &&
+        (record["meta"] === undefined || typeof record["meta"] === "string")
+      );
+    });
+  } catch {
+    return [];
+  }
+}
+
+function toSnapshot(record: LocalAiChatSessionRecord): LocalAiChatSessionSnapshot {
+  return {
+    channel: record.channel,
+    sessionId: record.sessionId,
+    messages: parseMessages(record.messagesJson)
+  };
+}
+
+export async function listLocalAiChatSessions(
+  userId: string
+): Promise<LocalAiChatSessionSnapshot[]> {
+  const records = await localDb.aiChatSessions.where("userId").equals(userId).toArray();
+  const decryptedRecords = await Promise.all(
+    records.map((record) => decryptAiChatSessionRecord(record))
+  );
+  return decryptedRecords.map(toSnapshot);
+}
+
+export async function saveLocalAiChatSession(
+  input: SaveLocalAiChatSessionInput
+): Promise<LocalAiChatSessionRecord> {
+  const record = await encryptAiChatSessionRecord({
+    key: createSessionKey(input.userId, input.channel),
+    userId: input.userId,
+    channel: input.channel,
+    sessionId: input.sessionId,
+    messagesJson: JSON.stringify(input.messages),
+    updatedAt: Date.now()
+  });
+
+  await localDb.aiChatSessions.put(record);
+  return record;
+}
+
+export async function deleteLocalAiChatSession(
+  userId: string,
+  channel: WebAiChannel
+): Promise<void> {
+  await localDb.aiChatSessions.delete(createSessionKey(userId, channel));
+}

apps/web/src/services/local-crypto.ts

@@ -0,0 +1,126 @@
+const LOCAL_CRYPTO_KEY_STORAGE_KEY = "todolist.web.local-crypto-key";
+const LOCAL_CRYPTO_PREFIX = "locv1";
+const LOCAL_CRYPTO_IV_LENGTH = 12;
+const LOCAL_CRYPTO_KEY_LENGTH = 32;
+
+let cachedLocalCryptoKeyPromise: Promise<CryptoKey> | null = null;
+
+function toArrayBuffer(bytes: Uint8Array): ArrayBuffer {
+  return bytes.buffer.slice(bytes.byteOffset, bytes.byteOffset + bytes.byteLength) as ArrayBuffer;
+}
+
+function bytesToBase64Url(bytes: Uint8Array): string {
+  let binary = "";
+  const chunkSize = 0x8000;
+
+  for (let index = 0; index < bytes.length; index += chunkSize) {
+    const chunk = bytes.subarray(index, index + chunkSize);
+    binary += String.fromCharCode(...chunk);
+  }
+
+  return btoa(binary).replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/u, "");
+}
+
+function base64UrlToBytes(value: string): Uint8Array {
+  const normalizedValue = value.replace(/-/g, "+").replace(/_/g, "/");
+  const paddedValue = normalizedValue + "=".repeat((4 - (normalizedValue.length % 4 || 4)) % 4);
+  const binary = atob(paddedValue);
+  const bytes = new Uint8Array(binary.length);
+
+  for (let index = 0; index < binary.length; index += 1) {
+    bytes[index] = binary.charCodeAt(index);
+  }
+
+  return bytes;
+}
+
+function createRandomKeyBytes(): Uint8Array {
+  const bytes = new Uint8Array(LOCAL_CRYPTO_KEY_LENGTH);
+  crypto.getRandomValues(bytes);
+  return bytes;
+}
+
+async function resolveLocalCryptoKey(): Promise<CryptoKey> {
+  if (cachedLocalCryptoKeyPromise) {
+    return cachedLocalCryptoKeyPromise;
+  }
+
+  cachedLocalCryptoKeyPromise = (async () => {
+    const savedKey = window.localStorage.getItem(LOCAL_CRYPTO_KEY_STORAGE_KEY);
+    const keyBytes = savedKey ? base64UrlToBytes(savedKey) : createRandomKeyBytes();
+
+    if (!savedKey) {
+      window.localStorage.setItem(LOCAL_CRYPTO_KEY_STORAGE_KEY, bytesToBase64Url(keyBytes));
+    }
+
+    return crypto.subtle.importKey("raw", toArrayBuffer(keyBytes), "AES-GCM", false, [
+      "encrypt",
+      "decrypt"
+    ]);
+  })();
+
+  return cachedLocalCryptoKeyPromise;
+}
+
+export function isLocalEncryptedString(value: string): boolean {
+  return value.startsWith(`${LOCAL_CRYPTO_PREFIX}:`);
+}
+
+export async function encryptLocalString(
+  value: string | null | undefined
+): Promise<string | null | undefined> {
+  if (value === undefined || value === null) {
+    return value;
+  }
+
+  if (isLocalEncryptedString(value)) {
+    return value;
+  }
+
+  const key = await resolveLocalCryptoKey();
+  const iv = crypto.getRandomValues(new Uint8Array(LOCAL_CRYPTO_IV_LENGTH));
+  const plaintext = new TextEncoder().encode(value);
+  const encryptedBuffer = await crypto.subtle.encrypt(
+    {
+      name: "AES-GCM",
+      iv
+    },
+    key,
+    plaintext
+  );
+
+  return `${LOCAL_CRYPTO_PREFIX}:${bytesToBase64Url(iv)}:${bytesToBase64Url(new Uint8Array(encryptedBuffer))}`;
+}
+
+export async function decryptLocalString(
+  value: string | null | undefined
+): Promise<string | null | undefined> {
+  if (value === undefined || value === null) {
+    return value;
+  }
+
+  if (!isLocalEncryptedString(value)) {
+    return value;
+  }
+
+  const [prefix, ivText, encryptedText] = value.split(":");
+  if (prefix !== LOCAL_CRYPTO_PREFIX || !ivText || !encryptedText) {
+    return null;
+  }
+
+  try {
+    const key = await resolveLocalCryptoKey();
+    const decryptedBuffer = await crypto.subtle.decrypt(
+      {
+        name: "AES-GCM",
+        iv: toArrayBuffer(base64UrlToBytes(ivText))
+      },
+      key,
+      toArrayBuffer(base64UrlToBytes(encryptedText))
+    );
+
+    return new TextDecoder().decode(decryptedBuffer);
+  } catch {
+    return null;
+  }
+}

apps/web/src/services/local-db.ts

@@ -69,12 +69,22 @@ export type LocalSyncInboxRecord = {
   appliedAt: number | null;
 };
 
+export type LocalAiChatSessionRecord = {
+  key: string;
+  userId: string;
+  channel: "USER_KEY" | "ASTRBOT" | "PUBLIC_POOL";
+  sessionId: string | null;
+  messagesJson: string;
+  updatedAt: number;
+};
+
 class TodoLocalDb extends Dexie {
   declare tasks: Table<LocalTaskRecord, string>;
   declare opLogs: Table<LocalOpLogRecord, string>;
   declare taskDrafts: Table<LocalTaskDraftRecord, string>;
   declare syncStates: Table<LocalSyncStateRecord, string>;
   declare syncInbox: Table<LocalSyncInboxRecord, string>;
+  declare aiChatSessions: Table<LocalAiChatSessionRecord, string>;
 
   constructor() {
     super("todolist-web-db");
@@ -117,11 +127,21 @@ class TodoLocalDb extends Dexie {
           });
       });
 
+    this.version(5).stores({
+      tasks: "&id,userId,status,priority,ddlAt,updatedAt,deletedAt",
+      op_logs: "&opId,entityId,entityType,action,clientTs,syncedAt",
+      task_drafts: "&taskId,userId,updatedAt",
+      sync_states: "&userId,updatedAt,lastSyncedAt",
+      sync_inbox: "&opId,userId,entityId,serverTs,appliedAt",
+      ai_chat_sessions: "&key,userId,channel,updatedAt"
+    });
+
     this.tasks = this.table("tasks");
     this.opLogs = this.table("op_logs");
     this.taskDrafts = this.table("task_drafts");
     this.syncStates = this.table("sync_states");
     this.syncInbox = this.table("sync_inbox");
+    this.aiChatSessions = this.table("ai_chat_sessions");
   }
 }
 

apps/web/src/services/local-sensitive-codec.ts

@@ -0,0 +1,150 @@
+import type {
+  LocalAiChatSessionRecord,
+  LocalOpLogRecord,
+  LocalSyncInboxRecord,
+  LocalTaskDraftRecord,
+  LocalTaskRecord
+} from "@/services/local-db";
+import {
+  decryptLocalString,
+  encryptLocalString,
+  isLocalEncryptedString
+} from "@/services/local-crypto";
+
+export function shouldEncryptTaskRecord(record: LocalTaskRecord): boolean {
+  return (
+    !isLocalEncryptedString(record.title) ||
+    (typeof record.contentJson === "string" && !isLocalEncryptedString(record.contentJson)) ||
+    (typeof record.contentText === "string" && !isLocalEncryptedString(record.contentText))
+  );
+}
+
+export async function encryptTaskRecord(record: LocalTaskRecord): Promise<LocalTaskRecord> {
+  return {
+    ...record,
+    title: (await encryptLocalString(record.title)) ?? record.title,
+    contentJson: (await encryptLocalString(record.contentJson)) ?? null,
+    contentText: (await encryptLocalString(record.contentText)) ?? null
+  };
+}
+
+export async function decryptTaskRecord(record: LocalTaskRecord): Promise<LocalTaskRecord> {
+  const title = await decryptLocalString(record.title);
+  const contentJson = await decryptLocalString(record.contentJson);
+  const contentText = await decryptLocalString(record.contentText);
+
+  return {
+    ...record,
+    title: typeof title === "string" && title.trim().length > 0 ? title : "未命名任务",
+    contentJson: typeof contentJson === "string" ? contentJson : null,
+    contentText: typeof contentText === "string" ? contentText : null
+  };
+}
+
+export function shouldEncryptTaskDraft(record: LocalTaskDraftRecord): boolean {
+  return (
+    !isLocalEncryptedString(record.title) ||
+    (typeof record.contentJson === "string" && !isLocalEncryptedString(record.contentJson)) ||
+    !isLocalEncryptedString(record.contentText)
+  );
+}
+
+export async function encryptTaskDraftRecord(
+  record: LocalTaskDraftRecord
+): Promise<LocalTaskDraftRecord> {
+  return {
+    ...record,
+    title: (await encryptLocalString(record.title)) ?? record.title,
+    contentJson: (await encryptLocalString(record.contentJson)) ?? null,
+    contentText: (await encryptLocalString(record.contentText)) ?? ""
+  };
+}
+
+export async function decryptTaskDraftRecord(
+  record: LocalTaskDraftRecord
+): Promise<LocalTaskDraftRecord> {
+  const title = await decryptLocalString(record.title);
+  const contentJson = await decryptLocalString(record.contentJson);
+  const contentText = await decryptLocalString(record.contentText);
+
+  return {
+    ...record,
+    title: typeof title === "string" ? title : "",
+    contentJson: typeof contentJson === "string" ? contentJson : null,
+    contentText: typeof contentText === "string" ? contentText : ""
+  };
+}
+
+export function shouldEncryptOpLogRecord(record: LocalOpLogRecord): boolean {
+  return !isLocalEncryptedString(record.payload);
+}
+
+export async function encryptOpLogRecord(record: LocalOpLogRecord): Promise<LocalOpLogRecord> {
+  return {
+    ...record,
+    payload: (await encryptLocalString(record.payload)) ?? record.payload
+  };
+}
+
+export async function decryptOpLogRecord(record: LocalOpLogRecord): Promise<LocalOpLogRecord> {
+  const payload = await decryptLocalString(record.payload);
+
+  return {
+    ...record,
+    payload: typeof payload === "string" ? payload : record.payload
+  };
+}
+
+export function shouldEncryptSyncInboxRecord(record: LocalSyncInboxRecord): boolean {
+  return typeof record.payload === "string" && !isLocalEncryptedString(record.payload);
+}
+
+export async function encryptSyncInboxRecord(
+  record: LocalSyncInboxRecord
+): Promise<LocalSyncInboxRecord> {
+  return {
+    ...record,
+    payload: (await encryptLocalString(record.payload)) ?? null
+  };
+}
+
+export async function decryptSyncInboxRecord(
+  record: LocalSyncInboxRecord
+): Promise<LocalSyncInboxRecord> {
+  const payload = await decryptLocalString(record.payload);
+
+  return {
+    ...record,
+    payload: typeof payload === "string" ? payload : null
+  };
+}
+
+export function shouldEncryptAiChatSessionRecord(record: LocalAiChatSessionRecord): boolean {
+  return (
+    !isLocalEncryptedString(record.messagesJson) ||
+    (typeof record.sessionId === "string" && !isLocalEncryptedString(record.sessionId))
+  );
+}
+
+export async function encryptAiChatSessionRecord(
+  record: LocalAiChatSessionRecord
+): Promise<LocalAiChatSessionRecord> {
+  return {
+    ...record,
+    sessionId: (await encryptLocalString(record.sessionId)) ?? null,
+    messagesJson: (await encryptLocalString(record.messagesJson)) ?? "[]"
+  };
+}
+
+export async function decryptAiChatSessionRecord(
+  record: LocalAiChatSessionRecord
+): Promise<LocalAiChatSessionRecord> {
+  const sessionId = await decryptLocalString(record.sessionId);
+  const messagesJson = await decryptLocalString(record.messagesJson);
+
+  return {
+    ...record,
+    sessionId: typeof sessionId === "string" ? sessionId : null,
+    messagesJson: typeof messagesJson === "string" ? messagesJson : "[]"
+  };
+}

apps/web/src/services/local-sync-repo.ts

@@ -1,19 +1,25 @@
-import {
+import {
   localDb,
   type LocalOpLogRecord,
   type LocalSyncInboxRecord,
   type LocalSyncStateRecord
 } from "@/services/local-db";
+import {
+  decryptOpLogRecord,
+  decryptSyncInboxRecord,
+  encryptSyncInboxRecord
+} from "@/services/local-sensitive-codec";
 import type { SyncPullItem } from "@/services/sync-api";
 
 export const MAX_SYNC_RETRY_COUNT = 5;
 
 export async function listPendingSyncOperations(limit = 20): Promise<LocalOpLogRecord[]> {
   const records = await localDb.opLogs.orderBy("clientTs").toArray();
-
-  return records
+  const pendingRecords = records
     .filter((record) => record.syncedAt === null && record.retryCount < MAX_SYNC_RETRY_COUNT)
     .slice(0, limit);
+
+  return Promise.all(pendingRecords.map((record) => decryptOpLogRecord(record)));
 }
 
 export async function countPendingSyncOperations(): Promise<number> {
@@ -100,7 +106,9 @@ export async function enqueueRemoteSyncOperations(
   }
 
   const receivedAt = Date.now();
-  const records: LocalSyncInboxRecord[] = operations.map((operation) => ({
+  const records = await Promise.all(
+    operations.map(async (operation) =>
+      encryptSyncInboxRecord({
         opId: operation.opId,
         userId,
         entityId: operation.entityId,
@@ -112,7 +120,9 @@ export async function enqueueRemoteSyncOperations(
         serverTs: new Date(operation.serverTs).getTime(),
         receivedAt,
         appliedAt: null
-  }));
+      })
+    )
+  );
 
   await localDb.syncInbox.bulkPut(records);
   return records.length;
@@ -123,8 +133,7 @@ export async function listPendingRemoteOperations(
   limit = 100
 ): Promise<LocalSyncInboxRecord[]> {
   const records = await localDb.syncInbox.where("userId").equals(userId).toArray();
-
-  return records
+  const pendingRecords = records
     .filter((record) => record.appliedAt === null)
     .sort((left, right) => {
       if (left.serverTs !== right.serverTs) {
@@ -138,6 +147,8 @@ export async function listPendingRemoteOperations(
       return left.opId.localeCompare(right.opId);
     })
     .slice(0, limit);
+
+  return Promise.all(pendingRecords.map((record) => decryptSyncInboxRecord(record)));
 }
 
 export async function markRemoteOperationsApplied(

apps/web/src/services/local-task-draft-repo.ts

@@ -1,4 +1,5 @@
 import { localDb, type LocalTaskDraftRecord } from "@/services/local-db";
+import { decryptTaskDraftRecord, encryptTaskDraftRecord } from "@/services/local-sensitive-codec";
 
 export type SaveLocalTaskDraftInput = {
   taskId: string;
@@ -12,7 +13,12 @@ export type SaveLocalTaskDraftInput = {
 };
 
 export async function getLocalTaskDraft(taskId: string): Promise<LocalTaskDraftRecord | undefined> {
-  return localDb.taskDrafts.get(taskId);
+  const draft = await localDb.taskDrafts.get(taskId);
+  if (!draft) {
+    return undefined;
+  }
+
+  return decryptTaskDraftRecord(draft);
 }
 
 export async function saveLocalTaskDraft(
@@ -23,7 +29,7 @@ export async function saveLocalTaskDraft(
     updatedAt: Date.now()
   };
 
-  await localDb.taskDrafts.put(draft);
+  await localDb.taskDrafts.put(await encryptTaskDraftRecord(draft));
   return draft;
 }
 

apps/web/src/services/local-task-repo.ts

@@ -6,6 +6,11 @@
   type LocalTaskStatus,
   type SyncActionType
 } from "@/services/local-db";
+import {
+  decryptTaskRecord,
+  encryptOpLogRecord,
+  encryptTaskRecord
+} from "@/services/local-sensitive-codec";
 
 const DEVICE_ID_STORAGE_KEY = "todolist.web.device-id";
 
@@ -83,7 +88,8 @@ function createSyncTaskPayload(payload: SyncTaskPayload): string {
 
 export async function listLocalTasksByUser(userId: string): Promise<LocalTaskRecord[]> {
   const tasks = await localDb.tasks.where("userId").equals(userId).toArray();
-  return tasks
+  const decryptedTasks = await Promise.all(tasks.map((task) => decryptTaskRecord(task)));
+  return decryptedTasks
     .filter((task) => task.deletedAt === null)
     .sort((left, right) => right.updatedAt - left.updatedAt);
 }
@@ -94,7 +100,7 @@ export async function getLocalTaskById(id: string): Promise<LocalTaskRecord | un
     return undefined;
   }
 
-  return task;
+  return decryptTaskRecord(task);
 }
 
 export async function createLocalTask(input: CreateLocalTaskInput): Promise<LocalTaskRecord> {
@@ -134,8 +140,8 @@ export async function createLocalTask(input: CreateLocalTaskInput): Promise<Loca
   );
 
   await localDb.transaction("rw", localDb.tasks, localDb.opLogs, async () => {
-    await localDb.tasks.add(task);
-    await localDb.opLogs.add(opLog);
+    await localDb.tasks.add(await encryptTaskRecord(task));
+    await localDb.opLogs.add(await encryptOpLogRecord(opLog));
   });
 
   return task;
@@ -178,8 +184,8 @@ export async function updateLocalTask(
   );
 
   await localDb.transaction("rw", localDb.tasks, localDb.opLogs, async () => {
-    await localDb.tasks.put(nextTask);
-    await localDb.opLogs.add(opLog);
+    await localDb.tasks.put(await encryptTaskRecord(nextTask));
+    await localDb.opLogs.add(await encryptOpLogRecord(opLog));
   });
 
   return nextTask;
@@ -211,8 +217,8 @@ export async function deleteLocalTask(id: string): Promise<boolean> {
   );
 
   await localDb.transaction("rw", localDb.tasks, localDb.opLogs, async () => {
-    await localDb.tasks.put(nextTask);
-    await localDb.opLogs.add(opLog);
+    await localDb.tasks.put(await encryptTaskRecord(nextTask));
+    await localDb.opLogs.add(await encryptOpLogRecord(opLog));
   });
 
   return true;

apps/web/src/services/storage-quota.ts

@@ -1,4 +1,4 @@
-import { localDb } from "@/services/local-db";
+import { listLocalTasksByUser } from "@/services/local-task-repo";
 
 export const DEFAULT_CLOUD_QUOTA_BYTES = 100 * 1024 * 1024;
 
@@ -18,13 +18,9 @@ function measureTextBytes(value: string | null): number {
 }
 
 export async function getStorageQuotaSnapshot(userId: string): Promise<StorageQuotaSnapshot> {
-  const tasks = await localDb.tasks.where("userId").equals(userId).toArray();
+  const tasks = await listLocalTasksByUser(userId);
 
   const usedBytes = tasks.reduce((total, task) => {
-    if (task.deletedAt !== null) {
-      return total;
-    }
-
     return (
       total +
       measureTextBytes(task.title) +

apps/web/src/services/sync-merge.ts

@@ -1,4 +1,4 @@
-import {
+import {
   localDb,
   type LocalSyncInboxRecord,
   type LocalTaskPriority,
@@ -6,6 +6,11 @@ import {
   type LocalTaskStatus
 } from "@/services/local-db";
 import { listPendingRemoteOperations } from "@/services/local-sync-repo";
+import {
+  decryptTaskRecord,
+  encryptTaskRecord,
+  shouldEncryptTaskRecord
+} from "@/services/local-sensitive-codec";
 
 const TASK_PRIORITY_VALUES: LocalTaskPriority[] = ["LOW", "MEDIUM", "HIGH", "URGENT"];
 const TASK_STATUS_VALUES: LocalTaskStatus[] = ["TODO", "IN_PROGRESS", "DONE", "ARCHIVED"];
@@ -246,11 +251,14 @@ export async function applyPendingRemoteOperations(userId: string): Promise<numb
         continue;
       }
 
-      const currentTask = await localDb.tasks.get(operation.entityId);
+      const storedTask = await localDb.tasks.get(operation.entityId);
+      const currentTask = storedTask ? await decryptTaskRecord(storedTask) : undefined;
       const incomingTask = buildIncomingTaskRecord(operation, currentTask);
 
       if (shouldApplyIncomingTask(currentTask, incomingTask, operation)) {
-        await localDb.tasks.put(incomingTask);
+        await localDb.tasks.put(await encryptTaskRecord(incomingTask));
+      } else if (storedTask && currentTask && shouldEncryptTaskRecord(storedTask)) {
+        await localDb.tasks.put(await encryptTaskRecord(currentTask));
       }
 
       await localDb.syncInbox.update(operation.opId, { appliedAt });