Strengthen plain stop wrappers

The prompts used to arrive at this change since the previous commit

User reported that the stop_mailcat script does not stop mailcat.

Any special observations that may be relevant for version management for this version. Be brief.

Plain-mode stop_mailcat.sh and stop_web.sh now wait longer after SIGTERM and fall back to SIGKILL. verplaats_log.json and plan.md were left unstaged.

deploy_vps.sh

@@ -184,10 +184,23 @@ fi
 
 if kill -0 "\$pid" 2>/dev/null; then
   kill "\$pid"
-  sleep 2
+  timeout=20
+  while [ "\$timeout" -gt 0 ] && kill -0 "\$pid" 2>/dev/null; do
+    sleep 1
+    timeout=\$((timeout - 1))
+  done
   if kill -0 "\$pid" 2>/dev/null; then
-    echo "mailcat still running after SIGTERM: \$pid"
-    exit 1
+    echo "mailcat still running after SIGTERM, sending SIGKILL: \$pid"
+    kill -KILL "\$pid" 2>/dev/null || true
+    timeout=5
+    while [ "\$timeout" -gt 0 ] && kill -0 "\$pid" 2>/dev/null; do
+      sleep 1
+      timeout=\$((timeout - 1))
+    done
+    if kill -0 "\$pid" 2>/dev/null; then
+      echo "mailcat still running after SIGKILL: \$pid"
+      exit 1
+    fi
   fi
 fi
 "\$RM" -f "\$PID_FILE"
@@ -286,10 +299,23 @@ fi
 
 if kill -0 "\$pid" 2>/dev/null; then
   kill "\$pid"
-  sleep 2
+  timeout=20
+  while [ "\$timeout" -gt 0 ] && kill -0 "\$pid" 2>/dev/null; do
+    sleep 1
+    timeout=\$((timeout - 1))
+  done
   if kill -0 "\$pid" 2>/dev/null; then
-    echo "mailcat web still running after SIGTERM: \$pid"
-    exit 1
+    echo "mailcat web still running after SIGTERM, sending SIGKILL: \$pid"
+    kill -KILL "\$pid" 2>/dev/null || true
+    timeout=5
+    while [ "\$timeout" -gt 0 ] && kill -0 "\$pid" 2>/dev/null; do
+      sleep 1
+      timeout=\$((timeout - 1))
+    done
+    if kill -0 "\$pid" 2>/dev/null; then
+      echo "mailcat web still running after SIGKILL: \$pid"
+      exit 1
+    fi
   fi
 fi
 "\$RM" -f "\$WEB_PID_FILE"