Makes §7 ownership usable end to end from the CLI.
- manifest: a `[project]` block (slug + optional name), independent of the
[app]/[group] XOR; threaded onto every apply from the repo. --dir reads it
from the tree ROOT's picloud.toml (a [project] elsewhere is ignored with a
note).
- client: apply_node/apply_tree carry project + takeover; the 409 branch now
surfaces the server message verbatim (covers StateMoved AND OwnershipConflict,
both self-contained). New groups_list_with_owner captures the owner slug.
- pic apply --takeover flag; pic groups ls gains an `owner` column (the owning
project's slug, or — when unclaimed).
- server: /api/v1/admin/groups now returns each group flattened with its owner
slug (via list_with_owner) — the shared Group deserialize ignores the extra
field, so pic groups tree / the dashboard are unaffected.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>