Add static Android Cast project hub landing page.

Three card links (reports, git, tickets) match crash console styling with stronger hover lift; nginx serves index.html at /app/androidcast_project/ instead of redirecting to crashes.

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

examples/app_hub/README.md

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+# Android Cast project hub (static landing)
+
+Served at `https://apps.f0xx.org/app/androidcast_project/` — three links to reports, git, and tickets.
+
+## Deploy (BE VM)
+
+After `git pull` on the server tree, copy two files next to `crashes/` (not inside PHP public):
+
+```bash
+HUB=/var/www/localhost/htdocs/apps/app/androidcast_project
+SRC=.../android_cast/examples/app_hub   # adjust to your clone path
+
+cp "$SRC/index.html" "$HUB/index.html"
+cp "$SRC/hub.css" "$HUB/hub.css"
+```
+
+Update nginx: replace the redirect on `/app/androidcast_project/` with static `alias` (see `examples/crash_reporter/backend/nginx.apps.conf.fragment`). Then:
+
+```bash
+nginx -t && rc-service nginx reload   # or your reload command
+```
+
+No PHP-FPM or database steps. Crash console CSS is loaded from `/app/androidcast_project/crashes/assets/css/app.css` (existing nginx alias).
+
+## Local preview
+
+```bash
+cd examples/app_hub
+php -S 127.0.0.1:8765
+# open http://127.0.0.1:8765/ — icons/CSS need crashes assets or adjust hrefs
+```