P3: payments + payouts (multi-country adapter pattern, wallet-integrated)

- payments: cash instant + gateway intent/redirect + webhook confirm; topup credits wallet
- payouts: driver request (holds wallet.debit) + admin complete/fail (fail refunds)
- tables tripz_pay_payments / tripz_pay_payouts (logical payment schema, extractable later)
- providers: cash/cliq/zaincash/syriatel/mtn/shamcash/paymob/fawry (structure ready, creds later)
- migration InitPayments; wired into app.module

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/src/modules/payments/entities/payment.entity.ts

@@ -0,0 +1,64 @@
+import {
+  Column,
+  CreateDateColumn,
+  Entity,
+  Index,
+  PrimaryGeneratedColumn,
+  UpdateDateColumn,
+} from 'typeorm';
+
+export type PaymentStatus = 'pending' | 'success' | 'failed' | 'refunded';
+export type PaymentPurpose = 'topup' | 'trip';
+
+/**
+ * معاملة دفع. الجدول: tripz_pay_payments («schema الدفع» منطقياً — قابل للفصل).
+ */
+@Entity('pay_payments')
+@Index(['tenant_id', 'user_id'])
+@Index(['tenant_id', 'status'])
+export class Payment {
+  @PrimaryGeneratedColumn('uuid')
+  id: string;
+
+  @Column({ type: 'uuid' })
+  tenant_id: string;
+
+  @Column({ type: 'uuid' })
+  user_id: string;
+
+  @Column({ type: 'uuid', nullable: true })
+  trip_id: string | null;
+
+  @Column({ default: 'topup' })
+  purpose: PaymentPurpose;
+
+  @Column()
+  provider: string; // cash | cliq | zaincash | syriatel | mtn | shamcash | paymob | fawry
+
+  @Column({ type: 'varchar', nullable: true })
+  method: string | null;
+
+  @Column({ type: 'numeric', precision: 12, scale: 3 })
+  amount: number;
+
+  @Column({ default: 'JOD' })
+  currency: string;
+
+  @Column({ type: 'varchar', default: 'pending' })
+  status: PaymentStatus;
+
+  @Column({ type: 'varchar', nullable: true })
+  tx_ref: string | null;
+
+  @Column({ type: 'varchar', nullable: true })
+  redirect_url: string | null;
+
+  @Column({ type: 'jsonb', default: {} })
+  meta: Record<string, any>;
+
+  @CreateDateColumn()
+  created_at: Date;
+
+  @UpdateDateColumn()
+  updated_at: Date;
+}