🤖 ci: add static check for terminal-bench agent configuration

Adds scripts/check-bench-agent.sh to verify that the agent entry point referenced in mux-run.sh exists and loads without import errors.
Includes this check in the main 'static-check' make target.

Author: ammar-agent

Makefile

@@ -213,7 +213,10 @@ build/icon.png: docs/img/logo.webp scripts/generate-icons.ts
 	@bun scripts/generate-icons.ts png
 
 ## Quality checks (can run in parallel)
-static-check: lint typecheck fmt-check check-eager-imports ## Run all static checks (includes startup performance checks)
+static-check: lint typecheck fmt-check check-eager-imports check-bench-agent ## Run all static checks (includes startup performance checks)
+
+check-bench-agent: ## Verify terminal-bench agent configuration and imports
+	@./scripts/check-bench-agent.sh
 
 lint: node_modules/.installed ## Run ESLint (typecheck runs in separate target)
 	@./scripts/lint.sh

scripts/check-bench-agent.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# This script verifies that the terminal-bench agent entry point 
+# referenced in mux-run.sh is valid and can be executed (imports resolve).
+
+REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+MUX_RUN_SH="$REPO_ROOT/benchmarks/terminal_bench/mux-run.sh"
+
+echo "Checking terminal-bench agent configuration..."
+
+if [[ ! -f "$MUX_RUN_SH" ]]; then
+  echo "❌ Error: $MUX_RUN_SH not found"
+  exit 1
+fi
+
+# Extract the agent CLI path from mux-run.sh
+# Looks for line like: cmd=(bun src/cli/debug/agentSessionCli.ts
+CLI_PATH_MATCH=$(grep -o "bun src/.*\.ts" "$MUX_RUN_SH" | head -1 | cut -d' ' -f2)
+
+if [[ -z "$CLI_PATH_MATCH" ]]; then
+  echo "❌ Error: Could not find agent CLI path in $MUX_RUN_SH"
+  exit 1
+fi
+
+FULL_CLI_PATH="$REPO_ROOT/$CLI_PATH_MATCH"
+
+echo "Found agent CLI path: $CLI_PATH_MATCH"
+
+if [[ ! -f "$FULL_CLI_PATH" ]]; then
+  echo "❌ Error: Referenced file $FULL_CLI_PATH does not exist"
+  exit 1
+fi
+
+echo "Verifying agent CLI startup (checking imports)..."
+
+# Run with --help or no args to check if it boots without crashing on imports
+# We expect it to fail with "Unknown option" or "workspace-path required" but NOT with "Module not found" or "worker error"
+if ! output=$(bun "$FULL_CLI_PATH" --help 2>&1); then
+  # It failed, which is expected (no args/bad args), but we need to check WHY
+  exit_code=$?
+  
+  # Check for known import/worker errors
+  if echo "$output" | grep -qE "Module not found|Worker error|Cannot find module"; then
+    echo "❌ Error: Agent CLI failed to start due to import/worker errors:"
+    echo "$output"
+    exit 1
+  fi
+  
+  # If it failed just because of arguments, that's fine - it means the code loaded.
+  echo "✅ Agent CLI loaded successfully (ignoring argument errors)"
+else
+  echo "✅ Agent CLI ran successfully"
+fi
+
+echo "Terminal-bench agent check passed."