fix : resolve ESM/CommonJS module confict in brainstorming server

skills/brainstorming/scripts/start-server.sh

@@ -115,13 +115,13 @@ esac
 # Foreground mode for environments that reap detached/background processes.
 if [[ "$FOREGROUND" == "true" ]]; then
   echo "$$" > "$PID_FILE"
-  env BRAINSTORM_DIR="$SCREEN_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" BRAINSTORM_OWNER_PID="$OWNER_PID" node server.js
+  env BRAINSTORM_DIR="$SCREEN_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" BRAINSTORM_OWNER_PID="$OWNER_PID" node server.cjs
   exit $?
 fi
 
 # Start server, capturing output to log file
 # Use nohup to survive shell exit; disown to remove from job table
-nohup env BRAINSTORM_DIR="$SCREEN_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" BRAINSTORM_OWNER_PID="$OWNER_PID" node server.js > "$LOG_FILE" 2>&1 &
+nohup env BRAINSTORM_DIR="$SCREEN_DIR" BRAINSTORM_HOST="$BIND_HOST" BRAINSTORM_URL_HOST="$URL_HOST" BRAINSTORM_OWNER_PID="$OWNER_PID" node server.cjs > "$LOG_FILE" 2>&1 &
 SERVER_PID=$!
 disown "$SERVER_PID" 2>/dev/null
 echo "$SERVER_PID" > "$PID_FILE"

tests/brainstorm-server/server.test.js

@@ -15,7 +15,7 @@ const fs = require('fs');
 const path = require('path');
 const assert = require('assert');
 
-const SERVER_PATH = path.join(__dirname, '../../skills/brainstorming/scripts/server.js');
+const SERVER_PATH = path.join(__dirname, '../../skills/brainstorming/scripts/server.cjs');
 const TEST_PORT = 3334;
 const TEST_DIR = '/tmp/brainstorm-test';
 

tests/brainstorm-server/ws-protocol.test.js

@@ -16,7 +16,7 @@ const crypto = require('crypto');
 const path = require('path');
 
 // The module under test — will be the new zero-dep server file
-const SERVER_PATH = path.join(__dirname, '../../skills/brainstorming/scripts/server.js');
+const SERVER_PATH = path.join(__dirname, '../../skills/brainstorming/scripts/server.cjs');
 let ws;
 
 try {