* fix(dispatch): prefilter sequence-held dev tasks before spawn
_spawn_pending_dev booted a full dev container for a pre-assigned pending task
that the assignee-blind sequence guard would refuse at the claim chokepoint (a
non-terminal lower-sequence same-parent sibling — not a declared dependency).
_blocked_by_earlier_lane_sibling is narrower (same dev's lane) and
_validate_task_for_spawn checks declared deps, not sequence siblings, so the
container spawned, the first claim hit _claim_blocked_by_sequence and was
refused, and the agent exited only to be re-spawned next tick — pure churn
until the predecessor went terminal.
Mirror the PM path's _pending_claim_blocked prefilter (the exact claim-gate
predicate, fails open) at the top of _spawn_pending_dev, before the narrower
per-dev lane probe. Reuses the helper so it can't drift from the chokepoint.
* fix(dispatch): prefilter sequence-held dev tasks before spawn
_spawn_pending_dev booted a full dev container for a pre-assigned pending task
that the assignee-blind sequence guard would refuse at the claim chokepoint (a
non-terminal lower-sequence same-parent sibling — not a declared dependency).
_blocked_by_earlier_lane_sibling is narrower (same dev's lane) and
_validate_task_for_spawn checks declared deps, not sequence siblings, so the
container spawned, the first claim hit _claim_blocked_by_sequence and was
refused, and the agent exited only to be re-spawned next tick — pure churn
until the predecessor went terminal.
Mirror the PM path's _pending_claim_blocked prefilter (the exact claim-gate
predicate, fails open) at the top of _spawn_pending_dev, before the narrower
per-dev lane probe. Reuses the helper so it can't drift from the chokepoint.
---------
Co-authored-by: Renn F <rennf93@users.noreply.github.com>
