chore(platform-infra): commit parallel proxy updates

scripts/src/platform-infra-sub2api-codex/config.ts

@@ -285,6 +285,7 @@ export function readManualBindingSources(value: unknown, key: string): CodexPool
       kind: readManualBindingKind(rawSource.kind, `${path}.kind`),
       provider: readManualBindingProvider(rawSource.provider, `${path}.provider`),
       description: readManualAccountReason(rawSource.description, `${path}.description`),
+      hostProxyRef: readManualBindingHostProxyRef(rawSource.hostProxyRef, `${path}.hostProxyRef`),
       fixedProxy: null,
     };
     if (source.kind === "proxy" && source.provider === "fixed-http-proxy") {
@@ -359,6 +360,16 @@ export function readManualBindingProvider(value: unknown, key: string): CodexPoo
   return text;
 }
 
+export function readManualBindingHostProxyRef(value: unknown, key: string): string | null {
+  if (value === undefined || value === null) return null;
+  const text = stringValue(value)?.trim() ?? "";
+  if (text.length === 0) return null;
+  if (!/^config\/platform-infra\/host-proxy\.yaml#targets\.[A-Za-z0-9_-]+$/u.test(text)) {
+    throw new Error(`${codexPoolConfigPath}.${key} must point at config/platform-infra/host-proxy.yaml#targets.<id>`);
+  }
+  return text;
+}
+
 export function validateManualBindingSourceId(value: string, key: string): void {
   if (!/^[A-Za-z0-9]([A-Za-z0-9._-]*[A-Za-z0-9])?$/u.test(value)) throw new Error(`${codexPoolConfigPath}.${key} has an unsupported source id format`);
 }

scripts/src/platform-infra-sub2api-codex/public-exposure.ts

@@ -169,6 +169,7 @@ export function manualBindingSourcePlan(source: CodexPoolManualBindingSource): R
     kind: source.kind,
     provider: source.provider,
     description: source.description,
+    hostProxyRef: source.hostProxyRef,
     fixedProxy: source.fixedProxy,
   };
 }

scripts/src/platform-infra-sub2api-codex/types.ts

@@ -209,6 +209,7 @@ export interface CodexPoolManualBindingSource {
   kind: CodexPoolManualBindingKind;
   provider: CodexPoolManualBindingProvider;
   description: string | null;
+  hostProxyRef: string | null;
   fixedProxy: CodexPoolManualFixedProxyConfig | null;
 }