Initial scaffold: blob store server, CLI scripts, and PWA share target

Clipboard/screenshot sync across own devices via a single DEVICE_TOKEN-gated
blob store, plus a small installable web app so a phone can push/pull
clips and share screenshots via the OS share sheet.

server/public/index.html

@@ -0,0 +1,104 @@
+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
+  <title>scrot</title>
+  <link rel="manifest" href="/manifest.webmanifest">
+  <link rel="icon" href="/icon.svg" type="image/svg+xml">
+  <link rel="apple-touch-icon" href="/icon.svg">
+  <meta name="theme-color" content="#111318">
+  <meta name="apple-mobile-web-app-capable" content="yes">
+  <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
+  <style>
+    :root { color-scheme: dark; }
+    * { box-sizing: border-box; }
+    body {
+      margin: 0; padding: 1.25rem; padding-bottom: 3rem;
+      background: #111318; color: #e6e8ec;
+      font: 16px/1.4 system-ui, sans-serif;
+      max-width: 32rem; margin-inline: auto;
+    }
+    h1 { font-size: 1.1rem; font-weight: 600; color: #9aa1ad; margin: 0 0 1.25rem; }
+    section {
+      background: #191c22; border: 1px solid #262b34; border-radius: 12px;
+      padding: 1rem; margin-bottom: 1rem;
+    }
+    section h2 { font-size: 0.95rem; margin: 0 0 0.75rem; }
+    textarea {
+      width: 100%; min-height: 6rem; resize: vertical;
+      background: #0d0f13; color: #e6e8ec; border: 1px solid #2c323d;
+      border-radius: 8px; padding: 0.6rem; font: inherit;
+    }
+    input[type="text"], input[type="password"] {
+      width: 100%; background: #0d0f13; color: #e6e8ec;
+      border: 1px solid #2c323d; border-radius: 8px; padding: 0.6rem; font: inherit;
+    }
+    button {
+      appearance: none; border: none; border-radius: 8px;
+      background: #2c7a5f; color: #eafff5; font: inherit; font-weight: 600;
+      padding: 0.6rem 1rem; margin-top: 0.6rem; margin-right: 0.5rem;
+      cursor: pointer;
+    }
+    button.secondary { background: #262b34; color: #cfd4dc; }
+    button:disabled { opacity: 0.5; cursor: default; }
+    .row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
+    #clipResult, #shotResult, #toast { font-size: 0.9rem; color: #9aa1ad; margin-top: 0.6rem; word-break: break-all; }
+    #shotResult a { color: #6ee7b7; }
+    #toast { display: none; padding: 0.6rem; background: #1c3a2c; border-radius: 8px; color: #b9f5da; margin-bottom: 1rem; }
+    #onboard { display: none; }
+    label { display: block; font-size: 0.85rem; color: #9aa1ad; margin-bottom: 0.3rem; }
+  </style>
+</head>
+<body>
+  <h1>scrot</h1>
+
+  <div id="toast"></div>
+
+  <section id="onboard">
+    <h2>Device token</h2>
+    <label for="tokenInput">Paste the token from <code>~/.config/scrot/env</code>, or open this page's link/QR from <code>cli/scrot-onboard</code>.</label>
+    <input id="tokenInput" type="password" autocomplete="off" placeholder="device token">
+    <div class="row">
+      <button id="saveToken">Save</button>
+    </div>
+  </section>
+
+  <section>
+    <h2>Push clipboard</h2>
+    <textarea id="clipText" placeholder="Paste or type text to sync to your other devices"></textarea>
+    <div class="row">
+      <button id="pasteFromClipboard" class="secondary">Paste from clipboard</button>
+      <button id="pushClip">Send</button>
+    </div>
+    <div id="clipResult"></div>
+  </section>
+
+  <section>
+    <h2>Pull latest clip</h2>
+    <div class="row">
+      <button id="pullClip">Fetch latest</button>
+      <button id="copyPulled" class="secondary" disabled>Copy to clipboard</button>
+    </div>
+    <div id="pullResult"></div>
+  </section>
+
+  <section>
+    <h2>Share screenshot</h2>
+    <input id="shotFile" type="file" accept="image/*" capture="environment">
+    <div class="row">
+      <button id="pushShot">Upload</button>
+    </div>
+    <div id="shotResult"></div>
+  </section>
+
+  <section>
+    <h2>Settings</h2>
+    <div class="row">
+      <button id="editToken" class="secondary">Change device token</button>
+    </div>
+  </section>
+
+  <script src="/app.js"></script>
+</body>
+</html>