refactor: streamline RSVP reader for The Well of Ascension single-book focus

- Clean up legacy multi-format/CJK modules (orp, epub, samples, modals)
- Replace with lightweight pure English tokenizer and chunking engine
- Add SettingsDrawer, auto-hiding HUD, and PWA icons
- Update manifest and touch icons

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

public/favicon.svg

@@ -1,9 +1,44 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" width="64" height="64">
-  <rect width="64" height="64" rx="16" fill="#09090b" />
-  <circle cx="32" cy="32" r="20" fill="none" stroke="#27272a" stroke-width="2.5" />
-  <line x1="32" y1="6" x2="32" y2="16" stroke="#f43f5e" stroke-width="3" stroke-linecap="round" />
-  <line x1="32" y1="48" x2="32" y2="58" stroke="#f43f5e" stroke-width="3" stroke-linecap="round" />
-  <line x1="6" y1="32" x2="16" y2="32" stroke="#71717a" stroke-width="2" stroke-linecap="round" />
-  <line x1="48" y1="32" x2="58" y2="32" stroke="#71717a" stroke-width="2" stroke-linecap="round" />
-  <circle cx="32" cy="32" r="4.5" fill="#f43f5e" />
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" width="512" height="512">
+  <defs>
+    <!-- Obsidian background radial gradient -->
+    <radialGradient id="obsidianGrad" cx="50%" cy="50%" r="50%">
+      <stop offset="0%" stop-color="#141c17" />
+      <stop offset="70%" stop-color="#0c100e" />
+      <stop offset="100%" stop-color="#09090b" />
+    </radialGradient>
+
+    <!-- Chlorophyll core glow -->
+    <radialGradient id="coreGlow" cx="50%" cy="50%" r="50%">
+      <stop offset="0%" stop-color="#a7f3d0" stop-opacity="0.9" />
+      <stop offset="40%" stop-color="#34d399" stop-opacity="0.6" />
+      <stop offset="70%" stop-color="#10b981" stop-opacity="0.2" />
+      <stop offset="100%" stop-color="#059669" stop-opacity="0" />
+    </radialGradient>
+
+    <!-- Emerald outer blur glow -->
+    <filter id="softGlow" x="-20%" y="-20%" width="140%" height="140%">
+      <feGaussianBlur stdDeviation="8" result="blur" />
+      <feComposite in="SourceGraphic" in2="blur" operator="over" />
+    </filter>
+  </defs>
+
+  <!-- Obsidian Deep Canvas -->
+  <rect width="512" height="512" rx="128" fill="url(#obsidianGrad)" />
+
+  <!-- Outermost Organic Halo -->
+  <circle cx="256" cy="256" r="190" fill="none" stroke="#059669" stroke-width="2" stroke-opacity="0.25" stroke-dasharray="12 8" />
+
+  <!-- Outer Chlorophyll Focus Ring -->
+  <circle cx="256" cy="256" r="150" fill="none" stroke="#059669" stroke-width="4" stroke-opacity="0.45" />
+
+  <!-- Middle Jade Concentric Ring -->
+  <circle cx="256" cy="256" r="110" fill="none" stroke="#10b981" stroke-width="6" stroke-opacity="0.75" filter="url(#softGlow)" />
+
+  <!-- Inner Mint Aperture Ring -->
+  <circle cx="256" cy="256" r="70" fill="none" stroke="#34d399" stroke-width="8" stroke-linecap="round" stroke-dasharray="180 30" />
+
+  <!-- Center Chlorophyll Vitality Core -->
+  <circle cx="256" cy="256" r="50" fill="url(#coreGlow)" />
+  <circle cx="256" cy="256" r="22" fill="#34d399" filter="url(#softGlow)" />
+  <circle cx="256" cy="256" r="10" fill="#ecfdf5" />
 </svg>

public/manifest.json

@@ -0,0 +1,23 @@
+{
+  "name": "Focus",
+  "short_name": "Focus",
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#09090b",
+  "theme_color": "#09090b",
+  "description": "极速词流专注器",
+  "icons": [
+    {
+      "src": "/pwa-192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "any maskable"
+    },
+    {
+      "src": "/pwa-512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "any maskable"
+    }
+  ]
+}