sync: bring over remaining release/custom-0.1.115 changes

- Extract PublicSettingsInjectionPayload named struct with drift test
- Add channel_monitor_default_interval_seconds to SSR injection
- Add image_output_price to SupportedModelChip
- Simplify AppSidebar buildSelfNavItems (admins see available channels)
- Add gateway WARN logs for 503 no-available-accounts branches
- Wire ChannelMonitorRunner into provideCleanup for graceful shutdown
- Add migrations 130/131 (CC template userid fix + mimicry field cleanup)
- Clean up fork-only features (sora, claude max simulation, client affinity)
- Remove ~320 obsolete i18n keys
- Add codexUsage utility, WechatServiceButton, BulkEditAccountModal
- Tidy go.sum

frontend/src/components/payment/__tests__/PaymentStatusPanel.spec.ts

@@ -96,36 +96,4 @@ describe('PaymentStatusPanel', () => {
     expect(wrapper.text()).toContain('payment.result.success')
     expect(wrapper.emitted('success')).toHaveLength(1)
   })
-
-  it('shows reopen button in QR mode when payUrl is also available', async () => {
-    const openSpy = vi.spyOn(window, 'open').mockReturnValue({ closed: false } as Window)
-
-    const wrapper = mount(PaymentStatusPanel, {
-      props: {
-        orderId: 42,
-        qrCode: 'https://pay.example.com/qr/42',
-        payUrl: 'https://pay.example.com/session/42',
-        expiresAt: '2099-01-01T12:30:00Z',
-        paymentType: 'alipay',
-        orderType: 'balance',
-      },
-      global: {
-        stubs: {
-          Icon: true,
-        },
-      },
-    })
-
-    await flushPromises()
-    expect(wrapper.text()).toContain('payment.qr.openPayWindow')
-
-    await wrapper.get('button.btn.btn-secondary.text-sm').trigger('click')
-    expect(openSpy).toHaveBeenCalledWith(
-      'https://pay.example.com/session/42',
-      'paymentPopup',
-      expect.any(String),
-    )
-
-    openSpy.mockRestore()
-  })
 })

frontend/src/components/payment/__tests__/paymentFlow.spec.ts

@@ -190,14 +190,12 @@ describe('buildCreateOrderPayload', () => {
       paymentType: 'alipay_direct',
       orderType: 'balance',
       origin: 'https://app.example.com/',
-      isMobile: true,
       isWechatBrowser: false,
     })).toEqual({
       amount: 88,
       payment_type: 'alipay',
       order_type: 'balance',
       return_url: 'https://app.example.com/payment/result',
-      is_mobile: true,
       payment_source: 'hosted_redirect',
     })
   })
@@ -209,7 +207,6 @@ describe('buildCreateOrderPayload', () => {
       orderType: 'subscription',
       planId: 7,
       origin: 'https://app.example.com',
-      isMobile: false,
       isWechatBrowser: true,
     })).toEqual({
       amount: 128,
@@ -217,7 +214,6 @@ describe('buildCreateOrderPayload', () => {
       order_type: 'subscription',
       plan_id: 7,
       return_url: 'https://app.example.com/payment/result',
-      is_mobile: false,
       payment_source: 'wechat_in_app_resume',
     })
   })

frontend/src/components/payment/__tests__/providerConfig.spec.ts

@@ -12,9 +12,9 @@ describe('PROVIDER_CONFIG_FIELDS.wxpay', () => {
     expect(findField('certSerial')?.optional).toBeFalsy()
   })
 
-  it('only keeps the simplified visible credential set in the admin form', () => {
-    expect(findField('mpAppId')).toBeUndefined()
-    expect(findField('h5AppName')).toBeUndefined()
-    expect(findField('h5AppUrl')).toBeUndefined()
+  it('exposes optional mp and H5 metadata fields for WeChat-specific flows', () => {
+    expect(findField('mpAppId')?.optional).toBe(true)
+    expect(findField('h5AppName')?.optional).toBe(true)
+    expect(findField('h5AppUrl')?.optional).toBe(true)
   })
 })