feat: Docker images, RVF export, and README update

- Add docker/ folder with Dockerfile.rust (132MB), Dockerfile.python (569MB),
  and docker-compose.yml
- Remove stale root-level Dockerfile and docker-compose files
- Implement --export-rvf CLI flag for standalone RVF package generation
- Generate wifi-densepose-v1.rvf (13KB) with model weights, vital config,
  SONA profile, and training provenance
- Update README with Docker pull/run commands and RVF export instructions
- Update test count to 542+ and fix Docker port mappings
- Reply to issues #43, #44, #45 with Docker/RVF availability

Co-Authored-By: claude-flow <ruv@ruv.net>

docker/.dockerignore

@@ -0,0 +1,9 @@
+target/
+.git/
+*.md
+*.log
+__pycache__/
+*.pyc
+.env
+node_modules/
+.claude/