Add `// Copyright Sunbeam Studios 2026` and `// SPDX-License-Identifier:
Apache-2.0` headers to all source files missing them. Update LICENSE
copyright year, Dockerfile copyright header, and .dockerignore for new
project structure (lean4/, docs/, training artifacts).
Signed-off-by: Sienna Meridian Satterwhite <sienna@sunbeam.pt>
Expand DDoS feature vector to 14 dimensions (cookie_ratio, referer_ratio,
accept_language_ratio, suspicious_path_ratio). Add heuristic auto-labeling
to DDoS trainer. Update benchmarks and tests to match new feature vectors.
Signed-off-by: Sienna Meridian Satterwhite <sienna@sunbeam.pt>
