Use wasm ephemeris locally and document Caddy serving

js/SL.Calendar.js

@@ -158,26 +158,19 @@ SL.Calendar = (function() {
       var files = document.getElementById('fileInput').files;
       // check if JSON file is loaded. If not, calculate...
       if (files.length <= 0) {
-        // checks if usecase is offline, then uses WebAssembly
-        if ( $("body").attr("use") != "online" ) {
-            var astrologer = new Worker('js/sweph.js');
-            astrologer.postMessage([days, ts, lat, lon]);
-            astrologer.onmessage = function(response) {
-                Hours.moments = response.data;
-                maker();
-            }
-        // checks if usecase is online, then uses server based calculation
-        } else {
-            var url = "https://almanac.sublunar.space/pmom.php?days="+days+"&ts="+ts+"&lat="+lat+"&lon="+lon;
-            fetch(url)
-            .then(function(response) {
-                return response.json();
-              })
-              .then(function(json) {
-                Hours.moments = json.query;
-                maker();
-              });
-        }
+        // always use the local WASM worker (no PHP backend needed)
+        var astrologer = new Worker('js/sweph.js');
+        astrologer.postMessage([days, ts, lat, lon]);
+        astrologer.onmessage = function(response) {
+            Hours.moments = response.data;
+            maker();
+        };
+        astrologer.onerror = function(err) {
+            NProgress.done();
+            $('#settings').modal('show');
+            alert("Ephemeris calculation failed. Please ensure pmom.js/pmom.wasm are available.\n\n" + err.message);
+            console.error(err);
+        };
       } else {
         // display calendar data from JSON file
         var fr = new FileReader();