[github-actions]

Merging this PR tags v0.13.0 and publishes it.

Bump: minor, from the commit titles since the last release.
To ship more first, keep merging; this PR updates itself.
Polish the notes by editing CHANGELOG.md here, just before merging:
the next merge to main rebuilds this branch and drops edits made here.

Release notes

Added

• The desktop app shows inventory and lineage. An Inventory tab lists
  everything an analysis read, two ways round: Model → reports lists tables
  and their members, and each object expands to the visuals it reaches,
  directly or through the measures built on it; Reports → model lists pages
  and visuals, and each visual expands to its fields and on through what they
  use. A filter and an "Unused only" switch narrow either view, and a detail
  panel shows what the selected object uses, what uses it, and where reports
  bind it. A Lineage tab draws one object's dependencies as a graph, what
  it uses on the left and what uses it on the right, out to the report visuals.
  Pick the object from the tree beside it, search for it, or choose "Show
  lineage" on an unused object. Click a node to focus it, and set the depth and
  direction.