feat(v2.7): 建立协作治理基础合同

apps/server/prisma/schema.prisma

@@ -138,7 +138,6 @@ model Task {
   assignee User?        @relation("TaskAssignee", fields: [assigneeId], references: [id])
   creator  User         @relation("TaskCreator", fields: [creatorId], references: [id])
   watchers TaskWatcher[]
-  comments Comment[]
 
   @@map("tasks")
 }
@@ -156,30 +155,100 @@ model TaskWatcher {
 }
 
 model Comment {
-  id        String   @id @default(cuid())
-  taskId    String   @map("task_id")
-  authorId  String   @map("author_id")
-  content   String
-  createdAt DateTime @default(now()) @map("created_at")
-
-  task Task @relation(fields: [taskId], references: [id])
+  id                 String    @id @default(cuid())
+  entityType         String    @map("entity_type")
+  entityId           String    @map("entity_id")
+  entityVersionId    String?   @map("entity_version_id")
+  productId          String?   @map("product_id")
+  projectId          String?   @map("project_id")
+  versionId          String?   @map("version_id")
+  authorId           String    @map("author_id")
+  content            String
+  mentionedMemberIds Json      @default("[]") @map("mentioned_member_ids")
+  deletedAt          DateTime? @map("deleted_at")
+  createdAt          DateTime  @default(now()) @map("created_at")
+  updatedAt          DateTime  @updatedAt @map("updated_at")
 
+  @@index([entityType, entityId, createdAt], name: "comments_entity_created_idx")
+  @@index([authorId, createdAt], name: "comments_author_created_idx")
   @@map("comments")
 }
 
 model ProjectMember {
-  id        String @id @default(cuid())
-  projectId String @map("project_id")
-  userId    String @map("user_id")
-  role      String @default("member")
+  id        String   @id @default(cuid())
+  projectId String   @map("project_id")
+  userId    String   @map("user_id")
+  role      String   @default("member")
+  createdAt DateTime @default(now()) @map("created_at")
+  updatedAt DateTime @updatedAt @map("updated_at")
 
   project Project @relation(fields: [projectId], references: [id])
   user    User    @relation(fields: [userId], references: [id])
 
   @@unique([projectId, userId])
+  @@index([userId, role], name: "project_members_user_role_idx")
   @@map("project_members")
 }
 
+model Notification {
+  id                String    @id @default(cuid())
+  recipientId       String    @map("recipient_id")
+  actorId           String?   @map("actor_id")
+  type              String
+  title             String
+  body              String    @default("")
+  resourceType      String    @map("resource_type")
+  resourceId        String    @map("resource_id")
+  resourceVersionId String?   @map("resource_version_id")
+  productId         String?   @map("product_id")
+  projectId         String?   @map("project_id")
+  versionId         String?   @map("version_id")
+  metadata          Json      @default("{}")
+  readAt            DateTime? @map("read_at")
+  createdAt         DateTime  @default(now()) @map("created_at")
+
+  @@index([recipientId, readAt, createdAt], name: "notifications_recipient_read_created_idx")
+  @@index([resourceType, resourceId], name: "notifications_resource_idx")
+  @@map("notifications")
+}
+
+model AuditLog {
+  id           String   @id @default(cuid())
+  actorId      String?  @map("actor_id")
+  action       String
+  resourceType String   @map("resource_type")
+  resourceId   String   @map("resource_id")
+  productId    String?  @map("product_id")
+  projectId    String?  @map("project_id")
+  versionId    String?  @map("version_id")
+  before       Json     @default("{}")
+  after        Json     @default("{}")
+  metadata     Json     @default("{}")
+  createdAt    DateTime @default(now()) @map("created_at")
+
+  @@index([resourceType, resourceId, createdAt], name: "audit_logs_resource_created_idx")
+  @@index([actorId, createdAt], name: "audit_logs_actor_created_idx")
+  @@map("audit_logs")
+}
+
+model GovernanceDictionary {
+  id        String    @id @default(cuid())
+  scope     String    @default("global")
+  kind      String
+  name      String
+  code      String?
+  group     String?
+  value     Json      @default("{}")
+  isSystem  Boolean   @default(false) @map("is_system")
+  deletedAt DateTime? @map("deleted_at")
+  createdAt DateTime  @default(now()) @map("created_at")
+  updatedAt DateTime  @updatedAt @map("updated_at")
+
+  @@unique([scope, kind, name])
+  @@index([kind, deletedAt], name: "governance_dictionaries_kind_deleted_idx")
+  @@map("governance_dictionaries")
+}
+
 model TaskCategory {
   id        String   @id @default(cuid())
   name      String