feat(x402): Integrated payai facilitator

test/unit/config/x402-facilitators-unit.js

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+/*
+  Unit tests for x402 facilitator registry (PayAI, Dexter, CDP).
+*/
+
+import { assert } from 'chai'
+
+import {
+  getFacilitatorConfig,
+  facilitatorRequiresAuth
+} from '../../../src/config/x402.js'
+
+describe('#x402 facilitators', () => {
+  it('should register PayAI without auth', () => {
+    assert.equal(facilitatorRequiresAuth('payai'), false)
+    const cfg = getFacilitatorConfig('payai')
+    assert.equal(cfg.name, 'PayAI')
+    assert.equal(cfg.url, 'https://facilitator.payai.network')
+    assert.equal(cfg.requiresAuth, false)
+  })
+
+  it('should normalize facilitator key case', () => {
+    const cfg = getFacilitatorConfig('PAYAI')
+    assert.equal(cfg.name, 'PayAI')
+  })
+
+  it('should require auth for CDP only', () => {
+    assert.equal(facilitatorRequiresAuth('cdp'), true)
+    assert.equal(facilitatorRequiresAuth('dexter'), false)
+  })
+})

test/unit/config/x402-multifac-bazaar-unit.js

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+/*
+  Multi-facilitator and Bazaar route config (env-dependent helpers).
+*/
+
+import { assert } from 'chai'
+
+import {
+  getActiveFacilitatorKeys,
+  getFacilitatorHttpUrl
+} from '../../../src/config/x402.js'
+
+describe('#x402 multi-facilitator + bazaar helpers', () => {
+  const saved = {}
+
+  beforeEach(() => {
+    saved.ACTIVE_FACILITATORS = process.env.ACTIVE_FACILITATORS
+    saved.PRIMARY_FACILITATOR = process.env.PRIMARY_FACILITATOR
+    delete process.env.ACTIVE_FACILITATORS
+    process.env.PRIMARY_FACILITATOR = 'cdp'
+  })
+
+  afterEach(() => {
+    if (saved.ACTIVE_FACILITATORS === undefined) delete process.env.ACTIVE_FACILITATORS
+    else process.env.ACTIVE_FACILITATORS = saved.ACTIVE_FACILITATORS
+    if (saved.PRIMARY_FACILITATOR === undefined) delete process.env.PRIMARY_FACILITATOR
+    else process.env.PRIMARY_FACILITATOR = saved.PRIMARY_FACILITATOR
+  })
+
+  it('getActiveFacilitatorKeys puts PRIMARY_FACILITATOR first, then ACTIVE_FACILITATORS', () => {
+    process.env.PRIMARY_FACILITATOR = 'cdp'
+    process.env.ACTIVE_FACILITATORS = 'payai,cdp,dexter'
+    assert.deepEqual(getActiveFacilitatorKeys(), ['cdp', 'payai', 'dexter'])
+  })
+
+  it('getActiveFacilitatorKeys prepends primary when not listed in ACTIVE_FACILITATORS', () => {
+    process.env.PRIMARY_FACILITATOR = 'cdp'
+    process.env.ACTIVE_FACILITATORS = 'dexter,payai'
+    assert.deepEqual(getActiveFacilitatorKeys(), ['cdp', 'dexter', 'payai'])
+  })
+
+  it('getActiveFacilitatorKeys falls back to PRIMARY_FACILITATOR', () => {
+    process.env.PRIMARY_FACILITATOR = 'dexter'
+    assert.deepEqual(getActiveFacilitatorKeys(), ['dexter'])
+  })
+
+  it('getFacilitatorHttpUrl returns known bases', () => {
+    assert.include(getFacilitatorHttpUrl('cdp'), 'cdp.coinbase.com')
+    assert.equal(getFacilitatorHttpUrl('dexter'), 'https://x402.dexter.cash')
+    assert.equal(getFacilitatorHttpUrl('payai'), 'https://facilitator.payai.network')
+  })
+})