feat(platform): show deployment outbound IPs on adapter config forms

Cloud/NAT deployments couldn't complete WeCom-family / Official Account /
QQ Official setup because the trusted-IP (IP whitelist) value — the
server's egress IPs — was nowhere visible in LangBot.

- config.yaml: new system.outbound_ips list (env: SYSTEM__OUTBOUND_IPS,
  comma-separated), exposed via GET /api/v1/system/info
- dynamic form: generic __system.*-named display-only fields resolved
  from systemContext (same namespace as show_if), one read-only row per
  value with a copy button, excluded from form state and emitted values;
  hidden entirely when the deployment provides no IPs
- manifests: trusted-IP display field for wecom, wecomcs, wecombot,
  officialaccount, qqofficial

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

web/src/app/wizard/page.tsx

@@ -939,6 +939,7 @@ function StepBotConfig({
                     is_wizard: true,
                     webhook_url: webhookUrl,
                     extra_webhook_url: extraWebhookUrl,
+                    outbound_ips: systemInfo.outbound_ips,
                   }}
                 />
               </CardContent>