The seat verb try gains members (ADR 0637 section 6); the try's group name and the missing-preview reason are one definition of mesh-delivery-sdk (ADR 0637 section 8).
Claude-Session: https://claude.ai/code/session_01NcbgfFSnn24M3GcqttoU7i
The checker says try.started (members at their commits) and try.ended for a whole try; the indexer writes and
deletes the candidate from them and finds the open tries again at its start through checker_tries, never reading
the checker's state. The try's digests are judged inside the one pass that takes the seats; the definitions of every
contracts module of each member are read; the config declarations leave a try's candidate alone.
Claude-Session: https://claude.ai/code/session_01NcbgfFSnn24M3GcqttoU7i
A try names several repositories, each the exact commit asked. A whole try (not narrowed to a level or
tests) runs the group check's own path: the manifest validator, the module graph and the composition on every
placed node, reading the indexer's candidate of the try's group. A try with no such candidate is an error that
says so, never a pass. A try's candidate is no check: the checker leaves it alone and owes the forge nothing.
Claude-Session: https://claude.ai/code/session_01NcbgfFSnn24M3GcqttoU7i
The operator, 2026-11-02: "A failed check shows only its first fault". Group feat/1126-removal's
check failed four times, each verdict naming one fault, so three faults took three runs of 20-40 minutes.
The checker no longer returns at a member's first failure: every member is asked, every level's
failures and every member's refused step or conflict are joined in judging order, the manifests are
judged and the composition is read also when the tests failed, and a failed composition is added after
them. The status line says how many failed and names the first, cut so "; and N more" stays whole.
checker_verdicts and checker_pull answer the whole list (failed). Needs mesh-sdk's buildstep change
(every level runs after a failure) pinned at the group's head.
Claude-Session: https://claude.ai/code/session_01NcbgfJ9Gum47zkFKWRaovL
Only tries a build node holds count toward the 4 at once; tries waiting for a node are bounded
apart at 8, and the refusal names both counts (issue 1890: at 19:53 four tries queued behind 44
checks for up to 47 minutes refused every further try).
The checker wrote a try's asks only at its end, so a 31-minute try could not be told queued from
running (issue 1890). The try's record now names each ask as it is put, then the node that took
it, its state and the phase its step says, written on the step key's own changes. build_usage
names a running try's asks and takes a build module's capacity.<node> (configured bounded by its
node's build CPU, issue 1806's follow-up) when it is current with mesh-config.
The operator's question (how much are the build nodes used, is ace eligible) took six calls over four tools.
build_usage reads it from the bus's states: seats held (have), capacity (mesh-config resolved), pauses, the
build modules' steps by kind with left-running keys, the last hour and day with total and median time and time
at capacity, the running tries, and the backlog the view program reads from the seats' streams. A try now names
the asks it put, and the checker announces its tries readable, so the view tells a try's asks from a check's.
mesh-controller's try asked build-agent, which leaves the checking at R4e. A try is now a key in the checker's state
tries: the checker judges the head merged onto its trunk as it judges a pull request's head, through the same
judge, places and holds, writes its end in the key and owes the forge nothing (no status, no preview, no verdict).
One try per head, at most four at once; hq and a repository whose trunk the gate does not name are refused with
"no level of <repo> is checked by the checker".
jschoubben