Kang c00d3c5963 refactor(desktop): collapse the store snapshot publish loop ...

The remaining three snapshots turned out to be a closed loop, so the
whole publish path goes.

`WorkspaceSnapshot` and `SessionSnapshot` were read only by
`published_core_store_snapshots_are_current`, which decided whether to
republish them. `OverlaySnapshot` was a same-render round-trip: `Render`
published it in its prologue and `overlay_host` read it back a few calls
later, falling back — when the store was empty — to an expression that
recomputed every field from the same `self` fields. `overlay_host` now
evaluates those flags directly into a local `OverlayFlags`, which is
exactly what the fallback did.

None of it had an observer. `AppShell` deliberately does not observe the
stores; the comment there records that store-observe was amplifying each
publish into an extra shell paint. So every `cx.notify()` in the publish
path was landing on nothing.

Gone with it: `publish.rs`, the publish throttle
(`should_publish_store_snapshots`, `store_snapshot_publish_due`,
`STORE_SNAPSHOT_HEARTBEAT`, `last_store_snapshot_publish_at`),
`WorkspaceStore`, `SessionStore`, and the snapshot half of
`OverlayStore`. The runtime tick loses a per-tick snapshot build and
comparison; the two slow-tick diagnostic fields that reported on it are
dropped, and `output_pressure` is still computed for the rest.

The four surviving stores each own something `NyaTermApp` does not:
`Runtime` (app runtime and native services), `WindowRuntime` (the pump),
`StartupRestore` (the restore queue) and `Overlay` (quick switch state).
`entities/` drops from 959 to 412 lines and the projection layer is gone.

Ten entity tests covered only the deleted stores; 548 tests become 538.

2026-07-26 16:19:42 +08:00

..

architecture

refactor(desktop): collapse the store snapshot publish loop

2026-07-26 16:19:42 +08:00