docs: stop asserting DagView/NodeView after their deletion

The deletion PR removed the types but left ~10 sites still describing
them. Two are real breakage rather than staleness: rustdoc intra-doc
links to deleted items ([NodeView::kind] and [Self::snapshot] in
job_queue/mod.rs). Neither clippy --all-targets -D warnings nor cargo
test resolves intra-doc links, so the tree was green with both already
dangling.

The rest reassert facts the deletion made false: docs/coordinator.md
documented the event as RebuildQueueChanged { seq, queue: [DagView...] }
with a per-node field list, and three sites pointed at the removed
/api/state.rebuild_queue endpoint.

One is pointer rot rather than a rename, and no grep for a deleted name
finds it: SchedulesChanged justified itself as "same snapshot-shape
rationale as RebuildQueueChanged" -- which the deletion turned into the
one event that is not a snapshot. Repointed at TombstonesChanged /
MetaInputsChanged, in both the Rust doc and the dashboard doc.

Two are pre-existing and strictly out of scope, swept under the
pfadfinderregel because the same grep surfaced them: hive-sh4re/README
advertised a jobs module that crate has not had since the host-sock
split, and hive-host-sock/README claimed its own payload types live in
hive-sh4re.

Docs and comments only -- no behaviour, no API, no test changes.

hive-c0re/src/job_queue/mod.rs

@@ -308,9 +308,10 @@ impl JobQueue {
     /// so both are running and both name `a`. Anything keying this set by agent
     /// alone will silently drop one — see [`super::scheduler`].
     ///
-    /// `label` is the node's own wire tag ([`NodeKind::as_str`]), the vocabulary
-    /// [`NodeView::kind`] already ships, so a pill and a DAG node name an
-    /// operation identically. `takes_container_down` is the crash watcher's
+    /// `label` is the node's own wire tag ([`NodeKind::as_str`]), the same
+    /// vocabulary the graph wire ships as a node's label, so a pill and a
+    /// graph node name an operation identically. `takes_container_down` is the
+    /// crash watcher's
     /// input and does **not** ride the wire to the frontend — a `Start` pill and
     /// a `Stop` pill are both pills; only one means a vanished container is
     /// expected.
@@ -381,10 +382,10 @@ impl JobQueue {
 
     /// One or more nodes plus their live subtrees, as generic wire nodes —
     /// the `QueueNodes` polling surface behind `hivectl`'s wait/progress
-    /// loop. Sibling of [`Self::snapshot`] (which serves the same graph
-    /// through the typed `DagView`/`NodeView` projection for the
-    /// dashboard's `/api/state.rebuild_queue`), this one goes through
-    /// [`GraphWire::wire_snapshot`] instead — no `Done`-node filtering, no
+    /// loop. Goes through [`GraphWire::wire_snapshot`] — the same projection
+    /// [`Self::graph_snapshot`] serves the dashboard with, differing only in
+    /// *which* nodes it selects (caller-named ids and their subtrees, rather
+    /// than every visible root). No `Done`-node filtering, no
     /// roll-up field (a node's own `state` answers that, see
     /// `hive_jobq_wire`'s doc comment). Looks each id up by identity
     /// alone — no assumption that it names a DAG container or a root;

hive-c0re/src/job_queue/model.rs

@@ -322,7 +322,8 @@ impl hive_jobq_wire::WireNode for NodeKind {
 }
 
 impl NodeKind {
-    /// Wire string for `NodeView.kind`.
+    /// Wire string for the node's label on the graph wire
+    /// ([`hive_jobq_wire::WireNode::label`]).
     pub fn as_str(&self) -> &'static str {
         match self {
             NodeKind::MetaSync { .. } => "meta_sync",