Every Typert Remote stream accepts client-to-Host items on the same
logical stream. A method declares the uplink item type in its return
type, RemoteStream<Out, In>, and reads the items through
this.ctx.invocation.uplink(); the invocation also carries the calling
Peer. Client generated methods return a handle that iterates the
downlink and exposes send/end/dispose for the uplink.
A `sequenced` list block merges key by key under higher-seq-wins like any Host-computed value, so a delayed control baseline at a lower cut can neither overwrite nor clear a newer live-session list value. Only a `cached` block goes through applyCached and yields to every sequenced write. The projection store's module docs describe the two row kinds.
Merge master 62b700bba7bb71e66d2d5a3b850ba8f4dd0fd6b4 into release/session-log-v4 at 4825bc01a999f564e79172a6af28e34fc757c540. Preserve this pinned integration checkpoint before any later upstream movement so the dependent session-format repairs have an immutable rebase base.
Keep release projection-backed child catalogs, independent Session references, exact fork behavior, V4 writer, and existing migration data. Adapt the incoming subagent sidebar chat to refreshProjections rather than the removed dedicated catalog API, preserve title projections in complete projection fixtures, and retain both sidebar actions and release lineage/status behavior. Remove the duplicate SessionProjectionMap import introduced by automatic merging.
Preserve both disjoint archive seals without changing any existing hash. Regenerate current Cordis and documentation catalogs from the combined source, retaining release session methods plus master slot factories. The frozen V0-V3 runtime paths are unchanged. Initial validation passed the full build, 93 focused Client tests, and all 1905 archived artifact seals; remaining integration and snapshot checks follow on this checkpoint.
`SESSION_FORMAT_VERSION` is the only value that names the Session format
generation. Two other version fields had moved to 2 alongside it:
- The `dsh_session_log` request extension's outer schema `version` returns
to 1 and its Session header projection keeps `seedLength`, derived from
the logical inherited cut, so the external wire is unchanged in this PR;
`sessionFormatVersion` alone identifies the embedded generation.
- The `sessionStats` projection unit's `stateVersion` returns to 1: the
projection cache binds every checkpoint to the format generation, so a
generation change discards old rows without a unit version bump.
Test doubles and the standalone Client fixture that build a current
header now spell `SESSION_FORMAT_VERSION` instead of the literal.
The `start` frame and the reconnect baseline attempt carried a wall-clock
`startedTime` that no Host or Client consumer read: the Host accumulator
and the Client reconciler copied it into their attempt maps and nothing
looked at it again. Presentation frames now carry only the coordinates
consumers use (attempt, revision, turn, step, chunk index, and v1 seq
provenance); the type-equivalence block, event graph, READMEs, and the
live-stream Agent Note follow the type.
Single RemoteError with a merge-extensible, domain-prefixed code map;
owners throw at the failure point; streams surface marked failures;
clients consume ctx.remote directly with isRemoteFailure as the only
discrimination point and construct no failure instances.
imccyu