chore: archive completed user-profile change

Archive user-profile change to openspec/changes/archive/
All tasks complete, specs already synced to main specs directory.

openspec/changes/archive/2025-05-17-oauth-traefik-integration/specs/traefik-deployment/spec.md

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+## ADDED Requirements
+
+### Requirement: Traefik Docker Compose
+
+The system SHALL provide a `docker-compose.traefik.yml` for deployment behind an existing Traefik reverse proxy.
+
+#### Scenario: Service labels
+- GIVEN the traefik deployment configuration
+- WHEN services are started
+- THEN `docker-compose.traefik.yml` SHALL define Traefik Docker labels for each service
+- AND all routing rules SHALL use configurable domain names
+
+#### Scenario: Environment variables
+- GIVEN the traefik deployment configuration
+- WHEN configuring the deployment
+- THEN all domain names SHALL be configurable via environment variables
+- AND the proxy web name SHALL be configurable via environment variable
+
+### Requirement: Environment Configuration
+
+The system SHALL document all required environment variables for traefik deployment.
+
+#### Scenario: Required variables
+- GIVEN a new deployment
+- WHEN setting up environment variables
+- THEN `.env.example` SHALL document:
+  - `API_DOMAIN` - domain for API service
+  - `WEB_DOMAIN` - domain for web frontend
+  - `AUTHENTIK_DOMAIN` - domain for Authentik instance
+  - `PROXY_WEB_NAME` - name for web proxy service
+  - All Authentik OIDC configuration variables