- Export `ProjectionKeySelection` (the read faces' key selection) and reuse it
from the projection cache instead of restating the union twice. The Cordis
catalog can now resolve the type its generated signatures reference.
- Make `wire.summary` a plain boolean: omitted means `true`, and a key whose
map entry carries the summary mark declares `false` so the runtime key set
and the client view type agree. The type no longer forbids a declaration.
- Describe the mark accurately: it has no runtime representation; `wire.view`
and `viewSchema` are typed with `SessionProjectionViewValue`, which strips it,
so the registration erase only widens the state type.
- Say plainly in the package README, the subsystem page, the client field
comments, and the Agent Note that a list row carries the summary projection
and never the full projection: a connected Session's store may hold more
values, but those are outside the list contract.
- Document the summary vocabulary on the subsystem page with `ts type-equiv`
blocks for the mark, its stripping, the excluded-key test, the summary value
type, and the key selection; split the prose paragraph.
- Revert the behavior-neutral cache-double refactors in three specs, and record
in the Agent Note why no upgrade guide accompanies the wire change and how a
consumer migrates.
imccyu
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