feat(services): add Jean Server one-click template and extra fields

Register the jean-server compose template, logo, and catalog entries,
and expose token and allowed-origins settings on the service form.
Sort extra fields by sortOrder and omit empty service-name prefixes.

templates/compose/jean.yaml

@@ -0,0 +1,31 @@
+# documentation: https://github.com/coollabsio/jean/blob/main/docs/headless-server.md
+# slogan: Open-source desktop and server client for orchestrating AI coding agents.
+# category: development
+# tags: jean,ai,coding,agents,development,git,worktrees
+# logo: svgs/jean.png
+# port: 3456
+
+services:
+  jean:
+    image: 'ghcr.io/coollabsio/jean-server:${JEAN_VERSION:-latest}'
+    environment:
+      - SERVICE_URL_JEAN_3456
+      - JEAN_HEADLESS=${JEAN_HEADLESS:-1}
+      - JEAN_HOST=${JEAN_HOST:-0.0.0.0}
+      - JEAN_PORT=${JEAN_PORT:-3456}
+      - JEAN_TOKEN=${SERVICE_PASSWORD_64_JEAN}
+      - JEAN_NO_TOKEN=${JEAN_NO_TOKEN:-0}
+      - JEAN_ALLOW_UNSAFE_NO_TOKEN=${JEAN_ALLOW_UNSAFE_NO_TOKEN:-0}
+      - JEAN_ALLOW_NATIVE_OPEN=${JEAN_ALLOW_NATIVE_OPEN:-0}
+      - JEAN_ALLOWED_ORIGINS=${JEAN_ALLOWED_ORIGINS:-}
+      - JEAN_DATA_DIR=/home/jean/.local/share/com.jean.desktop
+    volumes:
+      - jean-data:/home/jean/.local/share/com.jean.desktop
+    healthcheck:
+      test:
+        - CMD-SHELL
+        - 'curl -fsS http://127.0.0.1:3456/readyz >/dev/null || exit 1'
+      interval: 10s
+      timeout: 5s
+      retries: 12
+      start_period: 15s