feat: add Goldfish Recap YouTube summary PWA

YouTube subtitles via OpenRouter become persistent, shareable recaps
with timestamp jump links, PIN-protected creation, and Traefik deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

public/icon.svg

@@ -0,0 +1,10 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128" fill="none">
+  <rect width="128" height="128" rx="28" fill="#0B3D5C"/>
+  <ellipse cx="64" cy="68" rx="38" ry="28" fill="#FF9F43"/>
+  <ellipse cx="64" cy="68" rx="30" ry="22" fill="#FFB366"/>
+  <circle cx="78" cy="58" r="6" fill="#0B3D5C"/>
+  <circle cx="80" cy="56" r="2" fill="#FFF"/>
+  <path d="M26 68 Q18 58 22 48 Q28 52 30 62" fill="#FF9F43"/>
+  <path d="M38 88 Q64 98 90 88" stroke="#E8892E" stroke-width="3" fill="none" stroke-linecap="round"/>
+  <text x="64" y="118" text-anchor="middle" fill="#FFF8F0" font-family="sans-serif" font-size="10" font-weight="bold">3s</text>
+</svg>