* 🔥 chore(docker-compose): remove Casdoor SSO dependency
Casdoor is no longer needed since BetterAuth now supports email/password registration natively.
LOBE-3907
* ♻️ refactor(docker-compose): restructure directories
- Rename local/ to dev/ for development dependencies
- Remove logto/ and zitadel/ from production/
- Restore Casdoor config in production/grafana/
- Simplify dev/ to core services only (postgresql, redis, rustfs, searxng)
- Update docker-compose.development.yml to use dev/
- Remove minio-bucket.config.json (switched to rustfs)
* ♻️ refactor(docker-compose): simplify dev environment setup
- Remove docker-compose.development.yml, use dev/docker-compose.yml directly
- Add npm scripts: dev:docker, dev:docker:down, dev:docker:reset
- Simplify .env.example.development (remove variable refs, redundant vars)
- Update docker-compose/dev/.env.example (consistent passwords)
- Add docker-compose/dev/data/ to .gitignore
- Update setup docs: use npm scripts, remove image generation section
* 🔧 chore: add SSRF_ALLOW_PRIVATE_IP_ADDRESS to dev env example
* 🔒 security: auto-generate KEY_VAULTS_SECRET and AUTH_SECRET in setup.sh
- Remove hardcoded secrets from docker-compose.yml
- Add placeholders to .env.example files
- Generate secrets dynamically in setup.sh using openssl rand -base64 32
* 🔧 chore(docker-compose): expose SearXNG port and improve dev scripts
- Add SearXNG port mapping (8180:8080) for host access
- Use --wait flag in dev:docker to ensure services are healthy
- Include db:migrate in dev:docker:reset for one-command reset
- Update MinIO reference to RustFS in zh-CN docs
- Add SearXNG to service URLs and port conflict docs
