Claude/cpu guard script dn d8u

backend.js

@@ -57,9 +57,11 @@ const logger = {
     },
     _write(streams, obj) {
         const line = JSON.stringify(obj) + '\n';
-        const writable = streams.filter(Boolean);
+        const writable = streams.filter((s) => s && !s.destroyed && s.writable);
         if (writable.length > 0) {
-            for (const s of writable) s.write(line);
+            for (const s of writable) {
+                try { s.write(line); } catch (e) { console.error(`[backend] stream write error: ${e.message}`); }
+            }
         } else {
             console.log(line.trimEnd());
         }
@@ -210,8 +212,9 @@ app.post('/autofix/webhook', async (req, res) => {
         const rawBody = req.rawBody;
 
         if (!rawBody || !Buffer.isBuffer(rawBody)) {
-            logger.error('autofix.webhook', 'Missing rawBody — middleware misconfiguration', { requestId });
-            return res.status(500).json({ ok: false, error: 'Internal server error', requestId });
+            // Log as server-side misconfiguration but return 400 so senders don't retry indefinitely.
+            logger.error('autofix.webhook', 'Missing rawBody — raw-body middleware did not run', { requestId });
+            return res.status(400).json({ ok: false, error: 'Bad request: missing body', requestId });
         }
 
         if (!AUTOFIX_SECRET || !verifySignature(rawBody, sig)) {

prod-run.sh

@@ -400,7 +400,12 @@ ENDPOINT_PORT="${ENDPOINT_PORT:-3001}"
 ENDPOINT_LOG_DIR="$LOG_DIR"
 ENDPOINT_LOG="$ENDPOINT_LOG_DIR/backend.log"
 ENDPOINT_ERR="$ENDPOINT_LOG_DIR/backend-error.log"
-touch "$ENDPOINT_LOG" "$ENDPOINT_ERR" 2>/dev/null || true
+if ! touch "$ENDPOINT_LOG" "$ENDPOINT_ERR" 2>/dev/null; then
+    warn "Cannot write to $ENDPOINT_LOG_DIR — falling back to /tmp for endpoint logs"
+    ENDPOINT_LOG="/tmp/runewager-backend.log"
+    ENDPOINT_ERR="/tmp/runewager-backend-error.log"
+    touch "$ENDPOINT_LOG" "$ENDPOINT_ERR" || true
+fi
 
 if command -v systemctl >/dev/null 2>&1; then
     # Install/refresh the service unit from repo copy
@@ -424,7 +429,8 @@ if command -v systemctl >/dev/null 2>&1; then
         say "runewager-endpoint restarted via systemd"
     else
         warn "systemctl restart runewager-endpoint failed — falling back to nohup"
-        pkill -f "node .*${PROJECT_DIR}/backend\.js" 2>/dev/null || true
+        _esc_dir="$(printf '%s' "$PROJECT_DIR" | sed 's/[.[\*^$()+?{|]/\\&/g')"
+        pkill -f "node .*${_esc_dir}/backend\.js" 2>/dev/null || true
         sleep 1
         # Re-check port: another process may have bound it during the failed systemd restart window
         if is_port_listening "$ENDPOINT_PORT"; then
@@ -439,7 +445,8 @@ if command -v systemctl >/dev/null 2>&1; then
     fi
 else
     # No systemd — direct nohup
-    pkill -f "node .*${PROJECT_DIR}/backend\.js" 2>/dev/null || true
+    _esc_dir="$(printf '%s' "$PROJECT_DIR" | sed 's/[.[\*^$()+?{|]/\\&/g')"
+    pkill -f "node .*${_esc_dir}/backend\.js" 2>/dev/null || true
     sleep 1
     if is_port_listening "$ENDPOINT_PORT"; then
         free_port_if_conflicted "$ENDPOINT_PORT" "" || true

runewager-endpoint.service

@@ -23,7 +23,8 @@ Type=simple
 WorkingDirectory=/var/www/html/Runewager
 # Clear any stale process holding port 3001 before each start to prevent EADDRINUSE crash-loops.
 # The '+' prefix runs this step as root so it can kill processes owned by any user.
-ExecStartPre=+/bin/sh -c 'port=${ENDPOINT_PORT:-3001}; pid=$(lsof -t -i:"$port" 2>/dev/null || fuser "$port"/tcp 2>/dev/null || true); [ -n "$pid" ] && echo "[endpoint-prestart] killing stale PID $pid on port $port" && kill -9 $pid && sleep 1 || true'
+# Graceful escalation: SIGTERM → 3s wait → SIGKILL (only if still alive).
+ExecStartPre=+/bin/sh -c 'port=${ENDPOINT_PORT:-3001}; pid=$(lsof -t -i:"$port" 2>/dev/null || fuser -t "$port"/tcp 2>/dev/null || true); [ -z "$pid" ] && exit 0; echo "[endpoint-prestart] SIGTERM PID $pid on port $port"; kill -TERM "$pid" 2>/dev/null || true; sleep 3; kill -0 "$pid" 2>/dev/null && { echo "[endpoint-prestart] escalating to SIGKILL"; kill -KILL "$pid" 2>/dev/null || true; sleep 1; } || true'
 ExecStart=/usr/bin/node /var/www/html/Runewager/backend.js
 User=root
 Group=root