0.2.0-rc.2 withdrew every catalog/subagent seam this fork was written
against, and all three calls degraded to silent no-ops:
openSubagent(address) -> gone
setSubagentCatalogOpen(id, open) -> gone
refreshSubagents(id) -> gone
The host's own subagent UI (dsh-client-ui-subagent) rebuilds a parent's
child catalog with `sessions.refreshProjections(parentSessionId)`, so
that is the only kick that still exists. Wire it into `observe()` and the
catalog retry button, keeping the legacy names as fallbacks for older
hosts. Without it the root catalog never hydrated: the page sat on
"loading" or degraded to synthesized summary rows.
Also document what the investigation settled:
- docs/subagent-state-enumeration.md: the full state model (catalog
child / diagnostic / session / job / sidechat) and proof that this
fork already renders it 1:1 with upstream.
- docs/plugin-conventions.md: the hard rules another sidebar plugin
must follow (host schemastery, volatile prefs, ns = profile entry id,
no colons in tab ids, never read a volatile field directly) plus the
withdrawn-API replacement table and a pre-release checklist.
- docs/feedback-0.2.0-rc2-contract-gaps.md: gaps 2/3 reframed. The ask
is documenting the official paths (open(childSessionId) /
refreshProjections(id)), not adding new APIs.
Gates: typecheck 0, lint 0, build 0, test 131 files / 1385 passed.
