Stop mounting the vendored astrolabe submodule into the Nextcloud `app`
container by default (comment out the /opt/apps/astrolabe bind mount). With
the mount absent, the post-installation hook (20-install-astrolabe-app.sh)
falls through to `occ app:install astrolabe` + `app:enable`, so the dev/CI
stack now exercises the published app-store package rather than a locally
built dev copy. This catches packaging issues (e.g. missing built assets in
the released app) that a source build would mask.
Bump the third_party/astrolabe submodule to v0.16.6, which includes the
background-indexing re-login fix (astrolabe#93).
The dev mount and the CI "Build Astrolabe app" step are retained (commented
mount can be re-enabled locally) so developers can still iterate against the
vendored source on demand.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
