feat(models/rooms): add room attachment model and update room message/notifications

libs/models/rooms/mod.rs

@@ -114,6 +114,7 @@ impl std::fmt::Display for ToolCallStatus {
 
 pub use room::Entity as Room;
 pub use room_ai::Entity as RoomAi;
+pub use room_attachment::Entity as RoomAttachment;
 pub use room_category::Entity as RoomCategory;
 pub use room_member::Entity as RoomMember;
 pub use room_message::Entity as RoomMessage;
@@ -125,6 +126,7 @@ pub use room_pin::Entity as RoomPin;
 pub use room_thread::Entity as RoomThread;
 pub mod room;
 pub mod room_ai;
+pub mod room_attachment;
 pub mod room_category;
 pub mod room_member;
 pub mod room_message;

libs/models/rooms/room_attachment.rs

@@ -0,0 +1,22 @@
+use crate::{DateTimeUtc, MessageId, RoomId, UserId};
+use sea_orm::entity::prelude::*;
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel)]
+#[sea_orm(table_name = "room_attachment")]
+pub struct Model {
+    #[sea_orm(primary_key)]
+    pub id: Uuid,
+    pub room: RoomId,
+    pub message: MessageId,
+    pub uploader: UserId,
+    pub file_name: String,
+    pub file_size: i64,
+    pub content_type: String,
+    pub s3_key: String,
+    pub created_at: DateTimeUtc,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {}
+
+impl ActiveModelBehavior for ActiveModel {}

libs/models/rooms/room_message.rs

@@ -13,6 +13,8 @@ pub struct Model {
     pub room: RoomId,
     pub sender_type: MessageSenderType,
     pub sender_id: Option<UserId>,
+    /// AI model ID — set when sender_type = "ai", used for display name lookups.
+    pub model_id: Option<Uuid>,
     pub thread: Option<RoomThreadId>,
     pub in_reply_to: Option<MessageId>,
     pub content: String,

libs/models/rooms/room_notifications.rs

@@ -18,6 +18,10 @@ pub enum NotificationType {
     RoomDeleted,
     #[sea_orm(string_value = "system_announcement")]
     SystemAnnouncement,
+    #[sea_orm(string_value = "project_invitation")]
+    ProjectInvitation,
+    #[sea_orm(string_value = "workspace_invitation")]
+    WorkspaceInvitation,
 }
 
 impl std::fmt::Display for NotificationType {
@@ -29,6 +33,8 @@ impl std::fmt::Display for NotificationType {
             NotificationType::RoomCreated => "room_created",
             NotificationType::RoomDeleted => "room_deleted",
             NotificationType::SystemAnnouncement => "system_announcement",
+            NotificationType::ProjectInvitation => "project_invitation",
+            NotificationType::WorkspaceInvitation => "workspace_invitation",
         };
         write!(f, "{}", s)
     }