add uncaught exception handling

js/web-server.js

@@ -1337,4 +1337,13 @@ process.on('SIGHUP', function(sig, code) {
     processExit(code);
 });
 
+process.on('unhandledRejection', (reason, p) => {
+    logger.log({unhandled_rejection: reason, promise: p});
+});
+
+process.on('uncaughtException', (err) => {
+    logger.log({uncaught_exception: err});
+    // process.exit(1);
+});
+
 processLoad();

notes.md

@@ -40,6 +40,7 @@
 
 # CAM
 
+* `P` background worker to speculatively generate topo maps (and maybe pre-slicing)
 * `B` fails in pancaking (clone) when there are no sliced layers (like z bottom too high)
 * `B` linear finishing should extend beyond part boundaries by tool radius
 * `B` outside cutting direction in roughing mode inverted