v0.2.0

docs(site): swap registry feature for encrypted backups, v0.2.0

Feature grid now leads with backups in slot /05 (replacing the
niche "Run your own registry" item, which most readers don't
viscerally care about). New padlock SVG in fjord/navy matching
the page's terminal style, with "end-to-end encrypted" inside.

Examples section gains a /05 backups card between Run anything
and One login (rebalanced alternating-image ladder accordingly).
The example uses a service-to-lock-to-MinIO diagram with the
same amber gradient as the Authelia diagram so the two
"protection pillars" cards share a visual language.

Lede mentions automatic end-to-end encrypted backups alongside
SSO and SMTP as things ryra wires up for you. Philosophy /01
("A service is a folder") notes ryra backup as the third
backup option alongside tar and per-dir copies. Tightened all
feature bodies to 1-2 sentences; dropped CLI-flag noise
(--backup, --auth) from card copy.

intro.mdx adds the MinIO row to the services table and mentions
ryra backup next to the tar example.

site/package.json bumped to 0.2.0 to track the workspace.