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/account/__tests__/AccountStatusIndicator.spec.ts

@@ -122,7 +122,7 @@ describe('AccountStatusIndicator', () => {
       }
     })
 
-    expect(wrapper.text()).toContain('account.creditsExhausted')
+    expect(wrapper.text()).toContain('admin.accounts.status.creditsExhausted')
   })
 
   it('模型限流 + overages 启用 + AICredits key 生效 → 普通限流样式（积分耗尽，无 ⚡）', () => {
@@ -157,6 +157,6 @@ describe('AccountStatusIndicator', () => {
     expect(wrapper.text()).toContain('CSon45')
     expect(wrapper.text()).not.toContain('⚡')
     // AICredits 积分耗尽状态应显示
-    expect(wrapper.text()).toContain('account.creditsExhausted')
+    expect(wrapper.text()).toContain('admin.accounts.status.creditsExhausted')
   })
 })