Add npm, flame, kms stacks for 05-osk docker host

Portainer GitOps compose stacks for serverweb (05-osk):
- nginx-proxy-manager: reverse proxy (80/81/443), DB env-driven
- flame: internal dashboard (5005)
- kms: py-kms Windows activation server (1688)

All app stacks join the external reverseproxy-nw network.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

flame/docker-compose.yaml

@@ -0,0 +1,20 @@
+version: '3'
+
+services:
+  flame:
+    image: pawelmalak/flame:latest
+    container_name: flame
+    ports:
+      - 5005:5005
+    environment:
+      - PASSWORD=${FLAME_PASSWORD}
+    volumes:
+      - /mnt/containers/flame/container-data:/app/data
+      - /var/run/docker.sock:/var/run/docker.sock
+    restart: always
+    networks:
+      - reverseproxy-nw
+
+networks:
+  reverseproxy-nw:
+    external: true