Bind-mount PocketBase data dir in local dev instead of a named volume

Makes local test data (e.g. content pulled from production for testing)
directly inspectable and swappable on the host filesystem, without
affecting the production volume-based setup.

.gitignore

@@ -36,6 +36,9 @@ frontend/.nuxtrc
 caddy/data/
 caddy/config/
 
+# pocketbase local dev data (bind-mounted, docker-compose.dev.yml)
+pocketbase/pb_data/
+
 # logs
 *.log
 npm-debug.log*