fix: Docker Compose volume mapping and schema compatibility

- Fixed Directus extension volume mapping to point to bundle root instead of dist folder
- Changed directus_users.slug field to nullable to allow existing users without slugs
- These changes enable proper loading of the bundle extension in Docker environment

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

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

compose.yml

@@ -45,7 +45,7 @@ services:
       - "8055:8055"
     volumes:
       - directus-uploads:/directus/uploads
-      - ${SEXY_DIRECTUS_BUNDLE:-./packages/bundle/dist}:/directus/extensions/sexy.pivoine.art
+      - ${SEXY_DIRECTUS_BUNDLE:-./packages/bundle}:/directus/extensions/sexy.pivoine.art
     environment:
       # Database
       DB_CLIENT: pg

directus.yaml

@@ -206,7 +206,7 @@ fields:
       max_length: 255
       numeric_precision: null
       numeric_scale: null
-      is_nullable: false
+      is_nullable: true
       is_unique: true
       is_indexed: true
       is_primary_key: false