Add the React Flow rule editor, ordered graph APIs and runtime DAG execution.\n\nPublish rules only on OpenResty reload and reconcile checksum-driven IP group snapshots in bounded shared memory.
- Merge all files inside openflare-server to the repository root directory.
- Relocate agent, relay, and flared subprojects from internal/ to internal/apps/.
- Combine docker-compose files and update build context paths to root.
- Update GitHub workflows and Dockerfiles to refer to new directories and package names.
- Rewrite Go package imports across all files.
- Resolve database renew test race condition and clean up docs.
ryan