fix(cmd,tag-actions): restore #tag #tag→search shortcut + render toggles in tiles world
Two regressions surfaced 2026-04-26:
1. Tag-action toggles never rendered on item cards in tags / groups /
search / pagestream. Root causes: (a) consumer manifests were missing
`tag-actions:*` from their pubsub topic allowlists, so the strict tile
gate dropped the `tag-actions:get-all` round-trip; (b) a subscribe-
before-publish race where consumer tiles published before the resident
tag-actions tile had finished its async `loadSettings()`. Fixed by
adding the 5 topics to each consumer manifest and broadcasting
`tag-actions:get-all:response` once at the end of tag-actions init.
2. Typing `#tagA #tagB` + Enter in the cmd panel was a silent no-op.
The TYPING + ENTER transitions only handled `isURL` and
`userCommittedToCommand`; the all-hashtag fallback that used to route
to the search view was lost during the cmd panel rework. Added an
`isAllHashtags` guard and transition that invokes the existing
`openSearch` action (`peek://search/home.html?q=...`).
New regression specs: `tests/desktop/tag-actions-toggles.spec.ts` (4/0)
and `tests/desktop/cmd-hashtag-search.spec.ts` (1/0). Unit tests 593/0.