chore: import upstream snapshot with attribution

scripts/agent-eval/run-agent.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+# Headless Claude Code run against a repo with codegraph MCP, capturing the
+# full stream-json so we can see tool calls + token usage. Complements the
+# interactive itrun.sh: headless gives a clean per-tool breakdown + exact
+# tokens/cost, but defaults to the general-purpose subagent (not Explore).
+# To force the Explore path, ask for it in the prompt.
+#
+# Usage: run-agent.sh <repo-path> <label> "<prompt>"
+# Env: AGENT_EVAL_OUT (default /tmp/agent-eval), CG_BIN (codegraph dist binary)
+set -uo pipefail
+
+REPO="$1"; LABEL="$2"; PROMPT="$3"
+CG_BIN="${CG_BIN:-$(command -v codegraph || echo /usr/local/bin/codegraph)}"
+OUT_DIR="${AGENT_EVAL_OUT:-/tmp/agent-eval}"; mkdir -p "$OUT_DIR"
+OUT="$OUT_DIR/run-${LABEL}.jsonl"
+
+MCP_CONFIG=$(cat <<JSON
+{"mcpServers":{"codegraph":{"command":"${CG_BIN}","args":["serve","--mcp","--path","${REPO}"]}}}
+JSON
+)
+
+echo "→ running [$LABEL] in $REPO"
+cd "$REPO" || exit 1
+
+claude -p "$PROMPT" \
+  --output-format stream-json --verbose \
+  --permission-mode bypassPermissions \
+  --model "${MODEL:-sonnet}" --effort "${EFFORT:-high}" \
+  --max-budget-usd 2 \
+  --strict-mcp-config --mcp-config "$MCP_CONFIG" \
+  > "$OUT" 2>"$OUT_DIR/run-${LABEL}.err"
+
+echo "exit: $? | wrote $OUT ($(wc -l < "$OUT") lines)"
+node "$(cd "$(dirname "$0")" && pwd)/parse-run.mjs" "$OUT" 2>/dev/null || true