feat: add customer portal and RTC voice diagnostics

deploy/local-rtc/compose.override.yaml

@@ -11,12 +11,15 @@ services:
   worker:
     environment:
       VOICE_PROVIDER: volcengine
+      # StartVoiceChat must use the same real RTC AppId as the API token issuer.
+      RTC_APP_ID: ${RTC_APP_ID}
       VOLC_ACCESS_KEY_ID: ""
       VOLC_ACCESS_KEY_ID_FILE: /run/secrets/local-rtc/volc-access-key-id
       VOLC_SECRET_ACCESS_KEY: ""
       VOLC_SECRET_ACCESS_KEY_FILE: /run/secrets/local-rtc/volc-secret-access-key
       VOLC_RTC_REGION: cn-north-1
-      VOLC_RTC_API_VERSION: 2024-12-01
+      # Quote date-shaped API versions so YAML does not coerce them into timestamps.
+      VOLC_RTC_API_VERSION: "2024-12-01"
       VOLC_VOICE_CHAT_TEMPLATE_FILE: /run/secrets/local-rtc/voice-chat-template.json
     volumes:
       - ./deploy/local-rtc/runtime/volc-access-key-id:/run/secrets/local-rtc/volc-access-key-id:ro