feat: add loud-only extraction mode with agate gating

Makefile

@@ -14,7 +14,7 @@ else
   PIP_INSTALL = $(PIP) install
 endif
 
-.PHONY: default install install-cpu install-rocm install-cuda extract ast sync verify clean help
+.PHONY: default install install-cpu install-rocm install-cuda extract extract-loud ast sync verify clean help
 
 default: ast
 
@@ -25,6 +25,7 @@ help:
 	@echo "  make install-rocm   # force ROCm torch (RX 7900 XTX gfx1100)"
 	@echo "  make install-cuda   # force CUDA torch"
 	@echo "  make extract        # run extract.py (uses config.toml if present)"
+	@echo "  make extract-loud   # extract with loud-only gating (keep explosions/transients)"
 	@echo "  make ast            # run sync_audio_test.py (audio_sync_test, PyQtGraph GUI)"
 	@echo "  make sync LAG=0.042 # run apply_sync.py to mux synced output (LAG in seconds)"
 	@echo "  make verify LAG=0.042  # verify sync: video + dual waveform player"
@@ -82,6 +83,9 @@ install-cuda:
 extract:
 	@if [ -x $(PY) ]; then $(PY) extract.py; else python3 extract.py; fi
 
+extract-loud:
+	@if [ -x $(PY) ]; then $(PY) extract.py loud; else python3 extract.py loud; fi
+
 sync:
 	@if [ -x $(PY) ]; then PYTHONPATH=. $(PY) apply_sync.py --config $(CONFIG) --lag $(LAG); else PYTHONPATH=. python3 apply_sync.py --config $(CONFIG) --lag $(LAG); fi