Since the boot sweep (#2450) and meta-update cascade (#2476) became
single DAGs that grow subgraphs in-place, nothing constructs the old
fan-out anchors/parents anymore:
- NodeKind::Noop (the old boot_root grouping anchor) — no constructors.
- Template::StartupSweep / Source::StartupSweep (the old fan-out parent
template + cascade-child source) — replaced by Template::Boot and
Source::AutoUpdate/MetaUpdate respectively.
Drops the three variants + their as_str arms + the Noop executor arm, and
refreshes the stale fan-out/anchor doc comments (Boot/MetaUpdate/Source
docs, coordinator.md, dashboard.md). Frontend: the queue-kind glyph moves
from the dead startup_sweep to boot (which had none), and the dead
rqe-source-startup_sweep style is dropped.
No behaviour change — pure dead-variant removal.
With the meta-update cascade (#2476) and startup sweep (#2450) folded
into single DAGs that grow per-agent subgraphs via append_subgraph,
nothing links parent/child DAGs anymore — parent_id is dead.
hive-c0re: drop parent_id from Dag/DagSpec (+ the DagView copy); delete
append_children and cancel_children (no callers); simplify trim_history
(no more terminal-parent-with-live-children guard — a one-big-DAG is
terminal only when its whole graph settles); drop the rebuild() parent_id
param; QueueDag returns just the polled DAG (no fan-out children to
gather). hive-sh4re: drop the DagView.parent_id wire field.
frontend: a multi-step op is one DAG now, so renderRebuildQueue drops the
childrenOf/orphans cross-DAG grouping and renders each entry flat; its
per-agent subgraphs render as nodes within the one row (split by deps).
Removed the dead rqe-child style + isChild plumbing.
Docs + the child-DAG queue tests updated/removed to match.
Agent was a single field on Dag/DagSpec, making a DAG structurally
one-agent — a multi-agent op could only ever be N separate DAGs. Move it
onto Node/NodeSpec (and the NodeView wire type), drop it from Dag/DagSpec
(and DagView): a DAG can now span agents.
- lifecycle lease keys on the node's agent, still globally exclusive per
agent across all DAGs (Inner.leases unchanged in shape). A DAG holds one
lease per distinct agent it touches; settle() frees each at DAG-terminal
(per-agent-subgraph early release is a follow-up, only observable with
multi-agent DAGs).
- transient guard keyed (dag_id, agent); cancel-revert + Rebuilt events
walk TerminalDag.agents.
- submit-time dedup removed (a multi-agent DAG has no single agent to key
on); every submit enqueues a fresh DAG. Whether dedup needs reintroducing
is tracked in a follow-up sub-issue.
- templates gain a node(agent, kind, deps) helper stamping the agent onto
every node; meta templates stamp "hyperhive".
Templates stay single-agent in this PR — behaviour is unchanged, only the
representation + wire shape. Multi-agent DAG emission (restart/restart-all/
broad stop+start as one DAG) and the SetWanted-as-a-node change are
follow-ups off #2439.
mara's review on #2436: no submit-await-submit composition, even
server-side. Adds Template::GracefulRestart (Signal -> Drain ->
StopForUpdate -> Reconcile, wanted=Up) mirroring how Restart already
does StopForUpdate -> Reconcile, plus submit::graceful_restart and
templates::graceful_restart. handle_restart_scoped now submits exactly
one DAG per agent up front for both the graceful and non-graceful
case -- no await_dags in the loop anymore.
every agent lifecycle verb on the admin socket (rebuild / restart /
restart-all / kill / stop / start) now submits job-queue DAGs and
returns their ids; hivectl polls the new HostRequest::QueueDag and
prints a live node-chain progress line per DAG (fan-out children
included), exiting non-zero on failure — --no-wait opts out. DagView
and the queue wire enums move to hive_sh4re::jobs (wire types live in
the shared crate); the last fused rebuild path (lifecycle::rebuild)
is gone. tracker: #2166
