Added Backend

backend/db/schema/letterheads.ts

@@ -0,0 +1,39 @@
+import {
+    pgTable,
+    bigint,
+    timestamp,
+    text,
+    boolean,
+    uuid,
+} from "drizzle-orm/pg-core"
+
+import { tenants } from "./tenants"
+import { authUsers } from "./auth_users"
+
+export const letterheads = pgTable("letterheads", {
+    id: bigint("id", { mode: "number" })
+        .primaryKey()
+        .generatedByDefaultAsIdentity(),
+
+    createdAt: timestamp("created_at", { withTimezone: true })
+        .notNull()
+        .defaultNow(),
+
+    tenant: bigint("tenant", { mode: "number" })
+        .notNull()
+        .references(() => tenants.id),
+
+    name: text("name").default("Standard"),
+
+    path: text("path").notNull(),
+
+    documentTypes: text("documentTypes").array().notNull().default([]),
+
+    updatedAt: timestamp("updated_at", { withTimezone: true }),
+    updatedBy: uuid("updated_by").references(() => authUsers.id),
+
+    archived: boolean("archived").notNull().default(false),
+})
+
+export type Letterhead = typeof letterheads.$inferSelect
+export type NewLetterhead = typeof letterheads.$inferInsert