feat(reservations): add berth_reservations schema with partial unique exclusivity

src/lib/db/schema/index.ts

@@ -19,6 +19,9 @@ export * from './interests';
 // Berths
 export * from './berths';
 
+// Reservations
+export * from './reservations';
+
 // Documents & Files
 export * from './documents';
 

src/lib/db/schema/reservations.ts

@@ -0,0 +1,51 @@
+import { pgTable, text, timestamp, index, uniqueIndex } from 'drizzle-orm/pg-core';
+import { sql } from 'drizzle-orm';
+import { ports } from './ports';
+import { berths } from './berths';
+import { clients } from './clients';
+import { yachts } from './yachts';
+import { interests } from './interests';
+import { files } from './documents';
+
+export const berthReservations = pgTable(
+  'berth_reservations',
+  {
+    id: text('id')
+      .primaryKey()
+      .$defaultFn(() => crypto.randomUUID()),
+    berthId: text('berth_id')
+      .notNull()
+      .references(() => berths.id),
+    portId: text('port_id')
+      .notNull()
+      .references(() => ports.id),
+    clientId: text('client_id')
+      .notNull()
+      .references(() => clients.id),
+    yachtId: text('yacht_id')
+      .notNull()
+      .references(() => yachts.id),
+    interestId: text('interest_id').references(() => interests.id),
+    status: text('status').notNull(), // 'pending' | 'active' | 'ended' | 'cancelled'
+    startDate: timestamp('start_date', { withTimezone: true, mode: 'date' }).notNull(),
+    endDate: timestamp('end_date', { withTimezone: true, mode: 'date' }),
+    tenureType: text('tenure_type').notNull().default('permanent'), // 'permanent' | 'fixed_term' | 'seasonal'
+    contractFileId: text('contract_file_id').references(() => files.id),
+    notes: text('notes'),
+    createdBy: text('created_by').notNull(),
+    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => [
+    index('idx_br_berth').on(table.berthId),
+    index('idx_br_client').on(table.clientId),
+    index('idx_br_yacht').on(table.yachtId),
+    index('idx_br_port').on(table.portId),
+    uniqueIndex('idx_br_active')
+      .on(table.berthId)
+      .where(sql`${table.status} = 'active'`),
+  ],
+);
+
+export type BerthReservation = typeof berthReservations.$inferSelect;
+export type NewBerthReservation = typeof berthReservations.$inferInsert;