diff --git a/frontend/packages/dashboard/src/core.css b/frontend/packages/dashboard/src/core.css
index bc16c365..f17ac635 100644
--- a/frontend/packages/dashboard/src/core.css
+++ b/frontend/packages/dashboard/src/core.css
@@ -1,6 +1,21 @@
 /* ─── /core.html — C0R3 page ───────────────────────────────────────
-   Kept state (tombstones) and container load. Section rules imported
-   from system-sections.css (shared with dashboard.css + builds.css). */
+   Standalone page for kept state (tombstones) and container load.
+   Same minimal-chrome pattern as /logs.html (a `← home` back-link +
+   a createTabStrip sub-tab strip; base tab + page-header styling comes
+   from @hive/shared via common.css, linked by core.html).
+
+   The section renderers (kept state, container load) emit the same
+   class names as before. Those section-internal rules live in
+   system-sections.css (shared with dashboard.css and builds.css, which
+   references `.rqe-source*` from the schedules view). The
+   `.hive-stats-table` the container-load table reuses lives in
+   common.css, linked directly by core.html. Importing just the section
+   rules keeps the C0R3 bundle small instead of dragging in all of
+   dashboard.css.
+
+   Rebuild queue + meta inputs have moved to /builds.html; the
+   `.rebuild-live-log-*` styles that used to live here have moved to
+   system-sections.css so builds.css can share them via @import. */
 @import "./system-sections.css";
 
 body.core-shell {
diff --git a/frontend/packages/dashboard/src/schedules.js b/frontend/packages/dashboard/src/schedules.js
index e81d70b5..168e7d39 100644
--- a/frontend/packages/dashboard/src/schedules.js
+++ b/frontend/packages/dashboard/src/schedules.js
@@ -683,7 +683,11 @@ function renderScheduleRow(s, agents) {
 
   tr.append(el('td', { class: 'meta' }, s.owner));
 
-  // Body cell — truncates with ellipsis; full body + description on hover.
+  // Body cell — truncates with ellipsis; full body + description (if
+  // any) on hover. Description used to be a separate visible block on
+  // the card layout; the table compresses it into the title to keep
+  // row height tight. Mara nit-flag candidate if she actually wants
+  // it visible in-table.
   const bodyCell = el('td', { class: 'schedules-table-body-cell' });
   const bodyText = s.body || '';
   bodyCell.title = (s.description ? s.description + '\n\n' : '') + bodyText;
diff --git a/frontend/packages/dashboard/src/stream-worker.js b/frontend/packages/dashboard/src/stream-worker.js
index 06ae6b90..065b0e5a 100644
--- a/frontend/packages/dashboard/src/stream-worker.js
+++ b/frontend/packages/dashboard/src/stream-worker.js
@@ -1,6 +1,16 @@
 // SharedWorker that holds ONE EventSource per stream URL and fans
 // every server-sent event out to every connected tab via MessagePort.
-// Design rationale: docs/web-ui/shape.md (SSE multiplexing paragraph).
+//
+// Problem this solves: every dashboard / agent tab opens its own
+// `EventSource('/api/dashboard/stream')`. Browsers cap concurrent
+// connections per host (~6), and Firefox throttles / disconnects
+// background tabs when many are open. The result: tabs silently
+// drop the SSE, fall behind, and only catch up on focus.
+//
+// Centralising the connection in a SharedWorker means N tabs share
+// ONE backend EventSource regardless of focus state — way under the
+// per-host cap, immune to per-tab throttling, and the worker survives
+// any individual tab being suspended.
 //
 // Wire protocol (port.postMessage payloads):
 //
@@ -32,7 +42,8 @@
 //                                       signal to the client).
 //
 // Subscriptions are tracked per (port, url): a single port can
-// subscribe to multiple URLs (only one is in use today).
+// subscribe to multiple URLs (today only one is in use but the shape
+// stays open for the per-agent /events/stream multiplexing follow-up).
 // Unsubscribing the last port for a URL closes the EventSource so we
 // don't keep idle streams open.
 
diff --git a/frontend/packages/dashboard/src/system-sections.css b/frontend/packages/dashboard/src/system-sections.css
index 480eb0c9..c8dc95d2 100644
--- a/frontend/packages/dashboard/src/system-sections.css
+++ b/frontend/packages/dashboard/src/system-sections.css
@@ -1,7 +1,22 @@
 /* ─── SYST3M/BU1LDS section panels — shared by dashboard, /core.html,
    and /builds.html ──────────────────────────────────────────────────
-   Rebuild queue, meta inputs, kept state, and container-load panels.
-   Imported by core.css, dashboard.css, and builds.css. */
+   The rebuild queue, meta inputs, kept state, and container-load panels
+   render on /core.html; rebuild queue + meta inputs + live-log also
+   render on /builds.html (the build lifecycle hub). These
+   section-internal rules used to live in dashboard.css and were pulled
+   in by /core.html via a wholesale `@import "./dashboard.css"`, which
+   dragged the entire ~39kb dashboard stylesheet into the bundle.
+
+   They now live here and are `@import`ed by core.css, dashboard.css,
+   and builds.css. Each page gets only this small file instead of all
+   of dashboard.css; the dashboard keeps the rules (a couple are still
+   referenced from dashboard JS — `.rqe-source*` by the schedules view,
+   and `.hive-stats-table`, which already lives in common.css and is
+   loaded by all pages). Behaviour-preserving: identical rules, same
+   custom properties from colors.css / theme.css / common.css.
+
+   The selectors here are uniquely named to these panels and are not
+   redefined elsewhere, so the cascade is unaffected by the move. */
 
 /* ─── meta inputs panel ────────────────────────────────────────────── */
 .meta-inputs {
diff --git a/frontend/packages/dashboard/src/tabs.js b/frontend/packages/dashboard/src/tabs.js
index 1da887f3..6220ac44 100644
--- a/frontend/packages/dashboard/src/tabs.js
+++ b/frontend/packages/dashboard/src/tabs.js
@@ -129,8 +129,13 @@ window.marked = marked;
     if (containersState.delete(ev.name)) renderContainersFromState();
   }
 
-  // Rebuild queue state — drives "building…" / "meta-updating…" badges on
-  // SW4RM agent cards (see inFlightOpsByAgent + docs/web-ui.md::Container row).
+  // Derived rebuild queue state — cold-loaded from
+  // `/api/state.rebuild_queue`, then mutated live by the
+  // `rebuild_queue_changed` snapshot event. The SYST3M tab that used to
+  // render this list moved to the standalone /core.html page; the
+  // dashboard keeps the STATE because it drives the "building…" /
+  // "meta-updating…" badges on the SW4RM agent cards (see
+  // inFlightOpsByAgent + docs/web-ui.md::Container row).
   let rebuildQueueState = [];
   function syncRebuildQueueFromSnapshot(s) {
     rebuildQueueState = (s.rebuild_queue || []).slice();