KI-AGENT: Matrix durch nativen FEDEO-Chat ersetzen

backend/db/schema/communication_room_reads.ts

@@ -0,0 +1,26 @@
+import { bigint, pgTable, primaryKey, timestamp, uuid } from "drizzle-orm/pg-core"
+
+import { authUsers } from "./auth_users"
+import { communicationRooms } from "./communication_rooms"
+
+export const communicationRoomReads = pgTable(
+    "communication_room_reads",
+    {
+        roomId: uuid("room_id")
+            .notNull()
+            .references(() => communicationRooms.id, { onDelete: "cascade" }),
+        userId: uuid("user_id")
+            .notNull()
+            .references(() => authUsers.id, { onDelete: "cascade" }),
+        lastReadMessageId: bigint("last_read_message_id", { mode: "number" }),
+        readAt: timestamp("read_at", { withTimezone: true })
+            .notNull()
+            .defaultNow(),
+    },
+    (table) => ({
+        pk: primaryKey({ columns: [table.roomId, table.userId] }),
+    })
+)
+
+export type CommunicationRoomRead = typeof communicationRoomReads.$inferSelect
+export type NewCommunicationRoomRead = typeof communicationRoomReads.$inferInsert