Merge a2acc7d3eb620bb52f09f7ea3b5a3a1c23353e18 after preserving the earlier
master checkpoint and its successful CI. Carry current provider input-history
handling, UI controls, agent targeting, and runner-concurrency changes into
the integration base without changing the Session migration feature layers.
Keep durable direct-child catalog semantics alongside the upstream running /
inactive vocabulary. Resolve the snapshot description conflicts by retaining
that upstream status text and the existing descendants-only diagnostic rule;
the source and all 53 JSON tool descriptions agree. Preserve parent-session
availability handling with the upstream stale-blank and batched-history fixes.
The merged application builds, all 41 documentation gates pass, and focused
provider, tool-control, and Session Controller tests pass (98, 29, and 125).
Recorded input changes come from master: one refreshed v3 list-agents sample
and three new v3 scenarios; no migration bumps an existing snapshot generation.
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.
- A media-named FIFO or device node is refused before the open would
block on it (pre-open isFile check); POSIX FIFO regression test added.
- The full-body stream is bounded to the stat'ed size so concurrent
appends cannot exceed the declared Content-Length.
- Error responses carry no body for HEAD requests.
- Docs no longer overclaim the replacement race: the stat-identity
comparison narrows (does not fully close) the replacement window, and
the earlier realpath-to-stat window is acknowledged. Pairs re-recorded.
range-parser never validates the range unit, so /api/file now parses only
headers that start with the bytes unit: unsatisfiable ranges answer 416,
while malformed, unknown-unit, and multi-range headers are ignored for a
full 200 body per RFC 9110. The filesystem-root workspace case stays
POSIX-only in tests (a Windows drive-root spelling cannot be constructed
portably); containment already treats any separator-terminated root the
same. Docs (README pair, Agent Note pair) re-recorded.
- HEAD never opens a file stream; GET streams are destroyed on client
abort and are never opened for already-aborted requests.
- Validation and reading bind to the same opened file: pre-open and
opened stat identities are compared, so replacement/re-linking races
are refused (dev/ino check, read through the FileHandle).
- Workspace containment compares path components, so a filesystem-root
workspace serves files instead of doubling the separator.
- Multi-range headers are ignored for a full 200 body instead of a
mislabeled single-segment 206; single-range behavior unchanged.
- Tests now cover the reviewed edges (empty path, multi-range, root
workspace, HEAD+range, mid/early abort, unreadable file, explicit
unregister-on-dispose, private outside-target directories); module
coverage is back at 100/100/100/100.
- Agent Note bilingual facts and the ui-primitives/session-controller
README pairs are synced to the shipped behavior (pairs re-recorded).
Tianyi Cui