version bump - 0.3.0 - mobile layout

.gitignore

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 .DS_Store
-.old/
+.old/
+.cursor/
+tag-release.sh

README.md

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+# Cassette Player
+
+Simple HTML/JS/CSS Cassette Player
+
+## Instructions for hosting
+
+1. Clone or download this repository.
+    - if downloading as a zip file, extract to a temporary folder
+2. Copy or move the relevant files to the location you want to host them from. **Keep all files together in the same location/folder**.
+    - `index.html` - main HTML file
+    - `app.js` - main app JavaScript file
+    - `styles.css` - app styling CSS file
+    - `background.png` - image for player background
+3. Navigate to `http://<yourhost.com>/path/to/where/you/saved/index.html` in your browser.
+
+### Alternatively, if just previewing
+
+1. Unzip to a temporary folder.
+2. Open `index.html` in your browser. (`ctrl/cmd+o`, drag and drop, etc.)
+    a. or navigate to the file manually in your address bar (e.g. `file:///Users/username/tempfolder/cassette-player/index.html`)

assets/site.webmanifest

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+{
+  "name": "ECHO REALITY",
+  "short_name": "ECHO REALITY",
+  "icons": [
+    {
+      "src": "/assets/web-app-manifest-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "maskable"
+    },
+    {
+      "src": "/assets/web-app-manifest-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "maskable"
+    }
+  ],
+  "theme_color": "#ffffff",
+  "background_color": "#ffffff",
+  "display": "standalone"
+}