fix: correct app icon paths and add missing icons

- Fix 9 wrong/placeholder icon paths in backend (docker_packages.rs)
- Vaultwarden, Jellyfin, PhotoPrism, Immich: placeholder → correct icons
- Grafana, Morphos, Ollama, Penpot: wrong directory → app-icons/
- InDeeHub: external URL → local icon (CSP-safe)
- Add Tor app metadata entry with new icon
- Fix InDeeHub icon in Marketplace.vue

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

neode-ui/public/assets/img/app-icons/tor.svg

@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200">
+  <rect width="200" height="200" rx="40" fill="#7D4698"/>
+  <g transform="translate(100,100)">
+    <circle r="60" fill="none" stroke="white" stroke-width="8"/>
+    <circle r="42" fill="none" stroke="white" stroke-width="6"/>
+    <circle r="24" fill="none" stroke="white" stroke-width="5"/>
+    <circle r="8" fill="white"/>
+  </g>
+</svg>