added manifest and desktop icons

lapp.py

@@ -1,4 +1,4 @@
-from flask import Flask, send_file
+from flask import Flask, send_from_directory, url_for
 from flask_login import LoginManager
 from models import db
 from models import User

static/manifest.json

@@ -0,0 +1,26 @@
+{
+  "name": "List App",
+  "short_name": "L@pp",
+  "start_url": "/",
+  "display": "standalone", // Or "minimal-ui" for a more browser-like feel on iOS
+  "background_color": "#ffffff",
+  "theme_color": "#000000",
+  "icons": [
+    {
+      "src": "/static/lapp192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "/static/lapp512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    },
+    {
+      "src": "/static/lapp1024.png",
+      "sizes": "1024x1024",
+      "type": "image/png",
+      "purpose": "maskable" // Good for modern iOS devices
+    }
+  ]
+}

templates/base.html

@@ -6,6 +6,7 @@
   <title>{{ title or "L@PP" }}</title>
 
   <link rel="shortcut icon" href="{{ url_for('static', filename='favicon.ico') }}">
+  <link rel="manifest" href="/static/manifest.json">
   <link href="/static/bootstrap.min.css" rel="stylesheet">
   <script src="/static/jquery.min.js"></script>
   <script src="/static/bootstrap.min.js"></script>