Fix Leaflet library loading race condition and enable Redis-free development

- Fix race condition in map bundle loading by waiting for script to load before initializing map
- Ensure Leaflet is properly exposed as window.L in map bundle
- Add Leaflet availability check in map initialization function
- Disable Exq background jobs in development environment to remove Redis dependency
- Remove invalid TelemetryMetricsPrometheus plug from endpoint
- Application now starts successfully without Redis in development mode

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

assets/js/app.js

@@ -129,11 +129,27 @@ let Hooks = {};
 Hooks.APRSMap = {
   ...MapAPRSMap,
   mounted() {
-    if (window.VendorLoader) {
-      window.VendorLoader.loadMap();
-    }
-    if (MapAPRSMap.mounted) {
-      MapAPRSMap.mounted.call(this);
+    const self = this;
+    if (window.VendorLoader && !window.mapBundleLoaded) {
+      // Load map bundle and wait for it to complete
+      const script = document.createElement('script');
+      script.src = window.VendorLoader.mapBundleUrl;
+      script.onload = () => {
+        window.mapBundleLoaded = true;
+        // Now call the original mounted function
+        if (MapAPRSMap.mounted) {
+          MapAPRSMap.mounted.call(self);
+        }
+      };
+      script.onerror = () => {
+        console.error("Failed to load map bundle");
+      };
+      document.head.appendChild(script);
+    } else {
+      // Map bundle already loaded, proceed immediately
+      if (MapAPRSMap.mounted) {
+        MapAPRSMap.mounted.call(this);
+      }
     }
   }
 };
@@ -141,11 +157,27 @@ Hooks.APRSMap = {
 Hooks.InfoMap = {
   ...InfoMap,
   mounted() {
-    if (window.VendorLoader) {
-      window.VendorLoader.loadMap();
-    }
-    if (InfoMap.mounted) {
-      InfoMap.mounted.call(this);
+    const self = this;
+    if (window.VendorLoader && !window.mapBundleLoaded) {
+      // Load map bundle and wait for it to complete
+      const script = document.createElement('script');
+      script.src = window.VendorLoader.mapBundleUrl;
+      script.onload = () => {
+        window.mapBundleLoaded = true;
+        // Now call the original mounted function
+        if (InfoMap.mounted) {
+          InfoMap.mounted.call(self);
+        }
+      };
+      script.onerror = () => {
+        console.error("Failed to load map bundle");
+      };
+      document.head.appendChild(script);
+    } else {
+      // Map bundle already loaded, proceed immediately
+      if (InfoMap.mounted) {
+        InfoMap.mounted.call(this);
+      }
     }
   }
 };

assets/js/map-bundle-entry.js

@@ -2,5 +2,10 @@
 import "../vendor/js/leaflet-minimal.js";
 import "../vendor/js/plugins-optimized.js";
 
+// Ensure Leaflet is available as window.L (standard convention)
+if (window.leaflet && !window.L) {
+  window.L = window.leaflet;
+}
+
 // Mark bundle as loaded
 window.mapBundleLoaded = true;

assets/js/map.ts

@@ -157,6 +157,17 @@ let MapAPRSMap = {
 
   initializeMap(initialCenter: CenterData, initialZoom: number) {
     const self = this as unknown as LiveViewHookContext;
+    
+    // Check if Leaflet is still available
+    if (typeof window.L === "undefined") {
+      console.error("Leaflet library not loaded!");
+      self.handleFatalError("Leaflet library not available");
+      return;
+    }
+    
+    // Create a local reference to Leaflet for this function
+    const L = window.L;
+    
     // Ensure the element and its parent exist
     if (!self.el || !self.el.parentNode) {
       console.warn("Map element or parent not found, retrying...");

config/dev.exs

@@ -72,6 +72,11 @@ config :aprsme, AprsmeWeb.Endpoint,
 # Run `mix help phx.gen.cert` for more information.
 config :aprsme, dev_routes: true
 
+# Disable Exq in development (no Redis required)
+# Jobs that would normally run in the background will be skipped
+config :exq,
+  start_on_application: false
+
 # Mailer configuration for development
 # Using Swoosh.Adapters.Local from config.exs which stores emails locally
 # Access sent emails at http://localhost:4000/dev/mailbox

lib/aprsme_web/endpoint.ex

@@ -56,8 +56,5 @@ defmodule AprsmeWeb.Endpoint do
   # Health check endpoint
   plug AprsmeWeb.Plugs.HealthCheck
 
-  # Prometheus metrics endpoint
-  plug TelemetryMetricsPrometheus
-
   plug AprsmeWeb.Router
 end