feat: Docker Hub link + privacy/404 on IDE shell (#17)

* feat: add Docker Hub link; move privacy/404 to IDE shell

Add a Docker Hub link (https://hub.docker.com/r/libredb/libredb-studio)
to the StatusBar quick-links, next to GitHub and LinkedIn, so it is
visible site-wide on every IDE-style page.

Rebuild the privacy-policy and 404 pages on StudioShell instead of the
legacy Header/Footer chrome. The top-left logo now provides home
navigation, and content scrolls inside the IDE result pane. This removes
the duplicated footer (two footers previously rendered) and eliminates
deprecated, divergent link lists.

Delete the now-unused Header.astro and Footer.astro components.

Verified: astro check (0 errors), knip (clean), build (15 pages),
Playwright (single StatusBar footer, logo -> home, no legacy footer).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* chore: bump version to 0.5.4

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: cevheri

package.json

@@ -1,7 +1,7 @@
 {
   "name": "libredb-studio-website",
   "type": "module",
-  "version": "0.5.3",
+  "version": "0.5.4",
   "scripts": {
     "dev": "astro dev",
     "build": "node scripts/sync-docker-compose.mjs && astro build",

src/components/Footer.astro

@@ -32,6 +32,12 @@ const meta = sectionById[active] ?? sectionById['home'];
         rel="noopener noreferrer"
         class="cursor-pointer hover:text-fg">LinkedIn</a
       >
+      <a
+        href="https://hub.docker.com/r/libredb/libredb-studio"
+        target="_blank"
+        rel="noopener noreferrer"
+        class="cursor-pointer hover:text-fg">Docker</a
+      >
       <a
         href="https://github.com/sponsors/libredb"
         target="_blank"