v0.9.4: gaming modules (wolf, js99er), backup module, versioning

- services/wolf.sh (gaming): Games-on-Whales Wolf / Moonlight, per-service
  folder ~/docker/wolf, wolf-pair dropped, manage.sh pin workflow kept.
- services/js99er.sh (gaming): TI-99/4A emulator, own folder, port 8099,
  Selkies launcher tie-in removed.
- services/backup.sh: Kopia encrypted backups, paths adapted to ~/docker.
- Start versioning: VERSION (0.9.4), CHANGELOG.md, setup.sh --version flag.

All modules pass bash -n; ./setup.sh --list groups base/homelab/gaming/backup;
dry-run run-one exits 0 for every module with real commands guarded.

Note: minecraft module deferred to 0.9.5 (port hit a session limit).

https://claude.ai/code/session_017eA2qqq9jfF2tNtpUYL8vK

VERSION

@@ -0,0 +1 @@
+0.9.4