Add NATS account-balance SoT and statement review for customers, CS, and sales

Internal billing now uses verae.billing.* request-reply and pubs. zappier-account-balance tracks prepaid, credits, usage, and payments. Portal, admin, CS, and sales all review the same statement. Independent Forgejo repos stay split via push-module-repos.

packages/zappier/tests/health-proxy-credits.test.ts

@@ -34,6 +34,18 @@ describe('zappier-edge operational wiring', () => {
     }
   });
 
+  it('customers CS and sales can review a statement', async () => {
+    const { app } = buildApp();
+    await request(app)
+      .post('/admin/api/credits')
+      .set(ADMIN)
+      .send({ customerId: 'cust_1', cents: 250, reason: 'goodwill', agent: 'cs' });
+    const st = await request(app).get('/admin/api/statement/cust_1').set(ADMIN);
+    expect(st.status).toBe(200);
+    expect(st.body.prepaidCents).toBeGreaterThanOrEqual(250);
+    expect(st.body.credits.length).toBeGreaterThan(0);
+  });
+
   it('customer service can add prepaid credits', async () => {
     const { app } = buildApp();
     const add = await request(app)

packages/zappier/tests/portal.test.ts

@@ -279,6 +279,12 @@ describe('portal billing', () => {
     expect(res.body.mode).toBe('dev');
     const me = await request(app).get('/portal/api/me').set('authorization', `Bearer ${token}`);
     expect(me.body.balanceCents).toBe(2500);
+    const st = await request(app).get('/portal/api/statement').set('authorization', `Bearer ${token}`);
+    expect(st.status).toBe(200);
+    expect(st.body.prepaidCents).toBe(2500);
+    expect(Array.isArray(st.body.credits)).toBe(true);
+    expect(Array.isArray(st.body.usage)).toBe(true);
+    expect(Array.isArray(st.body.payments)).toBe(true);
   });
 
   it('rejects out-of-range reload amounts', async () => {