drop the mountJobqRollup wrapper, render(h(...)) directly

mara, on review: expected the plain Preact pattern (render(h(Widget,
props), container), call again to update) rather than a custom
mountX() returning {refresh(), update()}. Preact's own render is
already the re-render/diff entry point, so the wrapper was indirection
this component didn't need - swarm.js (plain .js, no JSX pragma
required for h()/render() either) now calls render(h(JobqRollup,
{...refreshToken}), root) directly, bumping a module-level token to
force a refetch instead of holding a mount handle.

JobqGraph/mountJobqGraph (a separate, already-merged component) is
untouched - out of scope for this PR, flagged as a possible follow-up
if she wants the same simplification there.

Re-verified: npm run build (whole workspace) + swarm-ui typecheck
clean, comment-block + issue-ref lints clean, re-screenshotted the
dashboard SW4RM tab against the same mocked payload - identical
render, spinner now visibly mid-rotation in the frame (confirms the
animation is live, not just present in markup).

frontend/packages/dashboard/src/swarm.js

@@ -9,7 +9,8 @@ import {
 } from './common.js';
 import { el } from '@hive/shared/dom.js';
 import { themedConfirm, themedToast } from '@hive/shared/modal.js';
-import { mountJobqRollup } from '@hive/shared/jobq-rollup.js';
+import { h, render } from 'preact';
+import { JobqRollup } from '@hive/shared/jobq-rollup.js';
 import {
   containersState, questionsState,
 } from './state.js';
@@ -66,27 +67,26 @@ const selectionState = new Set();
 // generic graph was itself judged a stopgap). Rendering itself later
 // moved out to the shared `JobqRollup` Preact component (same one
 // swarm-ui's /jobs page mounts), which owns its own fetch of
-// GET /api/jobq/rollup — this file just mounts it once and bumps its
-// refresh handle, mirroring builds.js's JobqGraph mount exactly.
+// GET /api/jobq/rollup — this file just calls Preact's own
+// `render(h(...))` directly (no `mountX()` wrapper: `render` is
+// already the re-render/diff entry point, per mara on review) and
+// bumps a refresh token to force a refetch.
 //
-// Mounted into #jobq-rollup-section, a sibling of #containers-section
+// Rendered into #jobq-rollup-section, a sibling of #containers-section
 // kept OUTSIDE that section's per-render `replaceChildren()` wipe (see
-// dashboard.html's comment on the mount div) — re-mounting a fresh
-// Preact tree on every container-state tick would work but is wasteful
-// and defeats the component owning its own fetch lifecycle.
-let jobqRollupHandle = null;
+// dashboard.html's comment on the mount div) — rendering into a
+// section that gets wiped on every container-state tick would defeat
+// the component owning its own fetch lifecycle.
+let jobqRollupToken = 0;
 
-// Mounts once; a second call is a no-op (idempotent — matches
-// `initCall`/`initPermissions`'s "safe to call from cold-load every
-// time" shape elsewhere in this bundle).
 export function initJobqRollup() {
-  if (jobqRollupHandle) return;
   const root = $('jobq-rollup-section');
   if (!root) return;
-  jobqRollupHandle = mountJobqRollup(root, {
+  render(h(JobqRollup, {
     endpoint: '/api/jobq/rollup',
     queueHref: '/builds.html',
-  });
+    refreshToken: jobqRollupToken,
+  }), root);
 }
 // Refetches on cold load (tabs.js's refreshState) and whenever
 // `rebuild_queue_changed` fires — a payload-less push trigger by
@@ -95,8 +95,8 @@ export function initJobqRollup() {
 // go refetch" treatment builds.js already gives its own JobqGraph mount
 // handle's .refresh().
 export function applyRebuildQueueChanged() {
+  jobqRollupToken += 1;
   initJobqRollup();
-  jobqRollupHandle?.refresh();
 }
 
 // ─── transients ─────────────────────────────────────────────────────────────

frontend/packages/shared/src/jobq-rollup/JobqRollup.tsx

@@ -18,17 +18,16 @@
 // /builds.html; swarm-ui's /jobs page omits it — a link to the page
 // you're already on is noise).
 //
-// The glyph carries `.spinner` (`@hive/shared/base.css`, already
-// imported by both consumers) for the "actively happening" spin —
-// not redeclared in jobq-rollup.css, since a static screenshot can't
-// tell a frozen spinner from a missing one; caught by argus's review.
+// The glyph carries `.spinner` (`@hive/shared/base.css`, imported by
+// both consumers) for the "actively happening" spin — a static
+// screenshot can't tell a frozen spinner from a missing one.
 //
-// Two ways to use this, same shape as JobqGraph: JSX (swarm-ui) —
-// `<JobqRollup endpoint="..." queueHref="..." />`. Or imperative mount
-// (dashboard/src/swarm.js, plain `.js`) — `mountJobqRollup(container,
-// props)` returns `{ refresh(), update(props) }`.
+// JSX (swarm-ui) — `<JobqRollup endpoint="..." queueHref="..." />`. Or
+// plain `render(h(JobqRollup, props), container)` (dashboard/src/
+// swarm.js, no JSX pragma needed) — call again with a bumped
+// `refreshToken` to force a refetch. No mount wrapper: `render` is
+// already the re-render/diff entry point.
 
-import { h, render } from 'preact';
 import { useState, useEffect } from 'preact/hooks';
 
 // Mirrors `hive_jobq_wire::StateSchema` — only the subset this banner
@@ -89,17 +88,3 @@ export function JobqRollup({ endpoint, queueHref, refreshToken = 0 }: JobqRollup
     </div>
   );
 }
-
-// Imperative mount helper — same shape as `mountJobqGraph`. Returns
-// `.refresh()` (bump the refresh token, re-fetch) and `.update(props)`
-// (merge new props and re-render).
-export function mountJobqRollup(container: Element, initialProps: JobqRollupProps) {
-  let props = initialProps;
-  let token = 0;
-  const draw = () => render(h(JobqRollup, { ...props, refreshToken: token }), container);
-  draw();
-  return {
-    refresh() { token += 1; draw(); },
-    update(next: Partial<JobqRollupProps>) { props = { ...props, ...next }; draw(); },
-  };
-}