feat: add split-safe fundamentals research protocol

scripts/run_fundamentals_macbook.sh

@@ -5,6 +5,7 @@ ROOT="$(git rev-parse --show-toplevel)"
 cd "$ROOT"
 
 SNAPSHOT="${1:-backtest_snapshots/fundamentals-backtest.sqlite}"
+PROTOCOL="${PROTOCOL:-split-safe}"
 WORKERS="${WORKERS:-$(sysctl -n hw.logicalcpu 2>/dev/null || echo 8)}"
 if [[ "$WORKERS" -gt 1 ]]; then
   WORKERS=$((WORKERS - 1))
@@ -21,17 +22,34 @@ if [[ ! -f "$SNAPSHOT" ]]; then
   exit 1
 fi
 
+case "$PROTOCOL" in
+  split-safe)
+    PREFIX="fundamentals-splitsafe"
+    SCORE_CACHE="reports/.cache/fundamentals-splitsafe-scores.pkl"
+    ;;
+  original)
+    PREFIX="fundamentals-overlay"
+    SCORE_CACHE="reports/.cache/fundamentals-scores.pkl"
+    ;;
+  *)
+    echo "Unsupported PROTOCOL: $PROTOCOL (use split-safe or original)" >&2
+    exit 1
+    ;;
+esac
+
 STAMP="$(date -u +%Y%m%d-%H%M%S)"
-OUT="reports/fundamentals-overlay-${STAMP}.json"
+OUT="reports/${PREFIX}-${STAMP}.json"
 
 echo "Snapshot: $SNAPSHOT"
 echo "Workers:  $WORKERS"
+echo "Protocol: $PROTOCOL"
 echo "Output:   $OUT"
 
 "$PYTHON" scripts/run_fundamentals_research.py "$SNAPSHOT" \
+  --protocol "$PROTOCOL" \
   --workers "$WORKERS" \
   --candidate-cache reports/.cache/fundamentals-candidates.pkl \
-  --fundamentals-cache reports/.cache/fundamentals-scores.pkl \
+  --fundamentals-cache "$SCORE_CACHE" \
   --out "$OUT"
 
 echo