2026.08 Infrastructure Changes — Unique AI Documentation

2026.08 Infrastructure Changes

Changes on Application environment

Change	Environment Variable Name	Application Default Value (if env variable unset)	Example	Required	Applications	Short Description
Added	`ZITADEL_WEBHOOK_ENDPOINT`	-	http://backend-service-scope-management.chat.svc/webhook/zitadel-events	false	- `backend-service-scope-management`	Enables real-time user sync via Zitadel Actions v2 webhooks. ⚠The scope-management service user must now have the `Iam Owner` role to be able to register the webhook target for receiving Zitadel events. Before enabling: See documentation for prerequisites and setup.
Modified	`FEATURE_FLAG_ENABLE_ADVANCED_FORMATTING_UN_9758`	false	`true`	false	- `web-app-chat`	Allows advanced formatting such as HTML in the frontend.
Added	`FEATURE_FLAG_ENABLE_HTML_RENDERING_UN_15131`	false	`true`	false	- `web-app-chat` - `assistants core`	Enables HTML rendering in the chat. Requires `FEATURE_FLAG_ENABLE_ADVANCED_FORMATTING_UN_9758` to be set as well.
Added	`REFLECTOR_BACKEND_API_URL`	-	`https://reflector.unique.app`	false	- `web-app-chat`	URL of the Code Reflector service. Required for the new HTML Store secure iframe rendering feature. See Code Reflector Infrastructure.
Added	`ZITADEL_ISSUER`	-	`https://zitadel.unique.app`	true	- `web-app-chat` - `web-app-admin` - `web-app-knowledge-upload` - `web-app-theme`	Zitadel issuer URL for frontend apps. Replaces `ZITADEL_PROJECT_ID` for authentication on frontend services.
Added	`SOURCE_AVAILABLE_TOOLS_REMOTELY`	`false`	`true`	false	- `backend-service-chat`	When set to `true`, fetches available tools from the Python service instead of using the hardcoded list in node-chat.
Added	`HTML_STORE_MAX_SLOTS`	`50`	`50`	false	- `code-reflector`	Maximum number of concurrent HTML store slots.
Added	`HTML_STORE_TTL_MS`	`10000`	`10000`	false	- `code-reflector`	Time-to-live for stored HTML entries in milliseconds.
Added	`HTML_STORE_MAX_SIZE_BYTES`	`2097152`	`2097152`	false	- `code-reflector`	Maximum HTML content size in bytes (default 2MB). Content exceeding this shows a download button instead of rendering inline.
Added	`HTML_STORE_MAX_WAIT_MS`	`5000`	`5000`	false	- `code-reflector`	Maximum time to wait for an available slot in milliseconds. Returns 503 if exceeded.
Added	`HTML_STORE_SLOT_WAIT_INTERVAL_MS`	`500`	`500`	false	- `code-reflector`	Interval between slot availability checks in milliseconds.
Added	`HTML_STORE_CLEANUP_INTERVAL_MS`	`1000`	`1000`	false	- `code-reflector`	Cleanup interval for expired HTML entries in milliseconds.
Added	`FEATURE_FLAG_ENABLE_FILE_BASED_ACCESS_UN_12660`	`false`	`true`	`false`	- `backend-service-ingestion` - `web-app-knowledge-upload` - `backend-service-scope-management`	Enables file-access-based control.
Added	`FILE_ACCESS_REBUILD_MERGE_EXISTING_FILE_ACCESSES`	`false`	`true`	false	- `backend-service-ingestion` (cron: node-ingestion-file-access-rebuild)	Enables merging of existing file accesses during the file access rebuild cron job.
Added	`FILE_ACCESS_REBUILD_UPDATE_INDEXER_CONCURRENCY_LIMIT`	`45`	`45`	false	- `backend-service-ingestion`	Concurrency limit for updating indexers when merging file accesses.
Removed	`ZITADEL_PROJECT_ID`	-	-	-	- `backend-service-chat` - `backend-service-ingestion` - `backend-service-configuration` - `backend-service-event-socket` - `backend-service-app-repository` - `client-insights-exporter`	No longer needed on specified backend services. Frontend apps now use `ZITADEL_ISSUER` instead.
Added	`FEATURE_FLAG_ENABLE_NEW_ANSWERS_UI_UN_14411`	`false`	`true`	`false`	- `web-app-chat`	This environment variable enables the new UI for the chat input

Chat backend Timeout Change

When using the backend-service chart version>= 10.1.0 the Kong service annotations (konghq.com/read-timeout, write-timeout, connect-timeout) have been replaced with routes.timeout: 1h. Self-hosted customers using Kong can update their timeout configuration accordingly.

File based access migration update

Only relevant if enabling file-based access. Do NOT add the data migration if file-based access is not being enabled.

A new data migration hook has been added to the backend-service-ingestion. The migration command in the migration hook in the default values of the service need to be adjusted.

// search for
cd /home/node/app/services/node-ingestion/prisma; npx prisma migrate deploy --config ../prisma.config.ts;

// replace with
cd /home/node/app/services/node-ingestion/prisma; npx prisma migrate deploy --config ../prisma.config.ts; cd /home/node/app/services/node-ingestion/dist; RUNNING_MODE=data-migration  node /home/node/app/services/node-ingestion/dist/main.js;

The final result should look like this in the default values of backend-service-ingestion:

hooks:
  migration:
    command: |
      cd /home/node/app/services/node-ingestion/prisma; npx prisma migrate deploy --config ../prisma.config.ts; cd /home/node/app/services/node-ingestion/dist; RUNNING_MODE=data-migration  node /home/node/app/services/node-ingestion/dist/main.js;
    enabled: true

| Author | Solution Engineering |