chore: remove sablier, scrapy, and vpn stacks

Remove three unused stacks and related configuration:
- Removed sablier, scrapy, vpn from compose includes
- Deleted sablier/compose.yaml, scrapy/compose.yaml, vpn/compose.yaml
- Removed scrapy-backup from restic config
- Removed scrapy volume mounts from restic compose
- Removed SABLIER, SCRAPY, VPN env vars from arty.yml
- Cleaned up sexy/uploads directory

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

arty.yml

@@ -19,11 +19,6 @@ envs:
     CORE_REDIS_PORT: 6379
     CORE_REDIS_IMAGE: redis:7-alpine
     CORE_POSTGRES_IMAGE: postgres:16-alpine
-    # VPN
-    VPN_TRAEFIK_ENABLED: true
-    VPN_COMPOSE_PROJECT_NAME: vpn
-    VPN_DOCKER_IMAGE: ghcr.io/wg-easy/wg-easy:latest
-    VPN_TRAEFIK_HOST: vpn.pivoine.art
     # Track
     TRACK_TRAEFIK_ENABLED: true
     TRACK_COMPOSE_PROJECT_NAME: track
@@ -64,17 +59,6 @@ envs:
     TANDOOR_GUNICORN_MEDIA: 0
     TANDOOR_COMMENT_PREF_DEFAULT: 1
     TANDOOR_SHOPPING_MIN_AUTOSYNC_INTERVAL: 5
-    # Scrapy
-    SCRAPY_TRAEFIK_ENABLED: true
-    SCRAPY_COMPOSE_PROJECT_NAME: scrapy
-    SCRAPY_SCRAPYD_IMAGE: vimagick/scrapyd
-    SCRAPY_IMAGE: vimagick/scrapyd
-    SCRAPY_SCRAPYRT_IMAGE: vimagick/scrapyd
-    SCRAPY_UI_IMAGE: ghcr.io/valknarness/scrapy-ui:main
-    SCRAPY_TRAEFIK_HOST: scrapy.pivoine.art
-    SCRAPY_SCRAPYD_PORT: 6800
-    SCRAPY_SCRAPYRT_PORT: 9080
-    SCRAPY_UI_SCRAPYD_URL: https://scrapy.pivoine.art/scrapyd
     # n8n
     N8N_TRAEFIK_ENABLED: true
     N8N_COMPOSE_PROJECT_NAME: n8n
@@ -158,9 +142,6 @@ envs:
     PROXY_COMPOSE_PROJECT_NAME: proxy
     PROXY_DOCKER_IMAGE: traefik:latest
     PROXY_TRAEFIK_HOST: proxy.pivoine.art
-    # Sablier
-    SABLIER_COMPOSE_PROJECT_NAME: sablier
-    SABLIER_VERSION: latest
     # AI Stack
     AI_TRAEFIK_ENABLED: true
     AI_COMPOSE_PROJECT_NAME: ai