chore: import upstream snapshot with attribution

scripts/benchmark-index.sh

@@ -0,0 +1,82 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Index a single benchmark repository and capture metrics.
+# Usage: benchmark-index.sh <binary> <lang> <repo_path> <results_dir>
+
+BINARY="${1:?Usage: benchmark-index.sh <binary> <lang> <repo_path> <results_dir>}"
+LANG="${2:?}"
+REPO="${3:?}"
+RESULTS_DIR="${4:?}"
+
+# Resolve symlinks
+REPO=$(cd "$REPO" && pwd -P)
+
+OUT="$RESULTS_DIR/$LANG"
+mkdir -p "$OUT"
+
+echo "INDEX: $LANG ($REPO)"
+
+# Count source files and LOC (exclude .git, vendor, node_modules, build dirs)
+FILE_COUNT=$(find "$REPO" -type f \
+  ! -path '*/.git/*' ! -path '*/node_modules/*' ! -path '*/vendor/*' \
+  ! -path '*/target/*' ! -path '*/build/*' ! -path '*/dist/*' \
+  ! -path '*/__pycache__/*' ! -path '*/.cache/*' \
+  | wc -l | tr -d ' ')
+
+LOC=$(find "$REPO" -type f \
+  ! -path '*/.git/*' ! -path '*/node_modules/*' ! -path '*/vendor/*' \
+  ! -path '*/target/*' ! -path '*/build/*' ! -path '*/dist/*' \
+  ! -path '*/__pycache__/*' ! -path '*/.cache/*' \
+  -exec cat {} + 2>/dev/null | wc -l | tr -d ' ')
+
+echo "$FILE_COUNT" > "$OUT/file-count.txt"
+echo "$LOC" > "$OUT/loc.txt"
+
+# Index via CLI and capture timing
+START_MS=$(python3 -c "import time; print(int(time.time()*1000))")
+
+INDEX_JSON=$("$BINARY" cli index_repository "{\"repo_path\":\"$REPO\",\"mode\":\"full\"}" 2>/dev/null || echo '{"error":"index failed"}')
+
+END_MS=$(python3 -c "import time; print(int(time.time()*1000))")
+ELAPSED=$((END_MS - START_MS))
+
+echo "$INDEX_JSON" > "$OUT/00-index.json"
+echo "$ELAPSED" > "$OUT/index-time.txt"
+
+# Extract node/edge counts (CLI wraps in MCP content envelope)
+NODES=$(echo "$INDEX_JSON" | python3 -c "
+import json,sys
+d=json.load(sys.stdin)
+# Unwrap MCP content envelope if present
+if 'content' in d:
+    inner=json.loads(d['content'][0]['text'])
+else:
+    inner=d
+print(inner.get('nodes',0))
+" 2>/dev/null || echo "0")
+EDGES=$(echo "$INDEX_JSON" | python3 -c "
+import json,sys
+d=json.load(sys.stdin)
+if 'content' in d:
+    inner=json.loads(d['content'][0]['text'])
+else:
+    inner=d
+print(inner.get('edges',0))
+" 2>/dev/null || echo "0")
+PROJECT=$(echo "$INDEX_JSON" | python3 -c "
+import json,sys
+d=json.load(sys.stdin)
+if 'content' in d:
+    inner=json.loads(d['content'][0]['text'])
+else:
+    inner=d
+print(inner.get('project',''))
+" 2>/dev/null || echo "")
+
+echo "$NODES" > "$OUT/nodes.txt"
+echo "$EDGES" > "$OUT/edges.txt"
+echo "$PROJECT" > "$OUT/project.txt"
+
+printf "  %s: %s files, %s LOC, %sms, %s nodes, %s edges\n" \
+  "$LANG" "$FILE_COUNT" "$LOC" "$ELAPSED" "$NODES" "$EDGES"