hive dashboard: bulk pause + resume in the selection bar

Mechanical addition to the existing bulk-action framework
(renderSelectionBar/addBulkButton, swarm.js) -- two per-agent actions
already exist (POST /api/pause/, /api/resume/, see hive-agent-menu.js),
this just gives the selection bar the same all-or-nothing enablement
rule the other six bulk buttons already use (pause enabled only when
none of the selection is already paused, and vice versa for resume).

.btn-pause reuses .badge-paused's yellow so the trigger and the
resulting state pill read as one colour; .btn-resume is green like
.btn-start (both are "go" actions). Docs updated to list both in the
Selection bar reference.

docs/web-ui/dashboard.md

@@ -1070,13 +1070,13 @@ all no-ops and the layout reads like a plain flat list.
 
 ## Selection bar
 
-Bulk actions (`R3ST4RT` / `ST0P` / `ST4RT` / `R3BU1LD` / `DESTR0Y` /
-`PURG3`) live here rather than as per-card buttons — see **Container
-row** above. Clicking an agent's icon toggles its selection (an
-in-memory `Set<name>`); `Esc` or the bar's `✕ clear` button drops
-everything. The selection persists across tab switches in-memory —
-the bar just hides on non-SW4RM tabs since other tabs don't show the
-agent cards needed to cross-reference.
+Bulk actions (`R3ST4RT` / `ST0P` / `ST4RT` / `P4US3` / `R3SUM3` /
+`R3BU1LD` / `DESTR0Y` / `PURG3`) live here rather than as per-card
+buttons — see **Container row** above. Clicking an agent's icon
+toggles its selection (an in-memory `Set<name>`); `Esc` or the bar's
+`✕ clear` button drops everything. The selection persists across tab
+switches in-memory — the bar just hides on non-SW4RM tabs since other
+tabs don't show the agent cards needed to cross-reference.
 
 When one or more agents are selected (via icon click), a sticky
 frosted-mauve bar slides up from the bottom of the viewport
@@ -1089,6 +1089,9 @@ frosted-mauve bar slides up from the bottom of the viewport
   - `↺ R3ST4RT` — running agents only
   - `■ ST0P` — running agents only
   - `▶ ST4RT` — stopped agents only
+  - `⏸ P4US3` — unpaused agents only (orthogonal to running/stopped —
+    see **Container row**'s own pause/resume note)
+  - `▶ R3SUM3` — paused agents only
   - `↻ R3BU1LD` — always available
   - `DESTR0Y` / `PURG3` — always available
   - `⇡ M0V3 → ROOT` — promote selected agents to top-level

frontend/packages/dashboard/src/common.css

@@ -152,6 +152,12 @@ code {
 .btn-restart { color: var(--cyan); border-color: var(--cyan); font-size: 0.75em; padding: 0.15em 0.5em; margin-left: 0.6em; }
 .btn-stop    { color: var(--pink); border-color: var(--pink); font-size: 0.75em; padding: 0.15em 0.5em; margin-left: 0.6em; }
 .btn-start   { color: var(--green); border-color: var(--green); font-size: 0.75em; padding: 0.15em 0.5em; margin-left: 0.6em; }
+/* Same yellow as .badge-paused (the paused-state pill) — pause enters
+   that state, so the trigger and the resulting badge read as one
+   colour, not two unrelated ones. Resume reads as green like
+   .btn-start: both are "go" actions, back to the turn loop running. */
+.btn-pause   { color: var(--yellow); border-color: var(--yellow); font-size: 0.75em; padding: 0.15em 0.5em; margin-left: 0.6em; }
+.btn-resume  { color: var(--green); border-color: var(--green); font-size: 0.75em; padding: 0.15em 0.5em; margin-left: 0.6em; }
 /* M0V3 affordance (selection bar) — mauve reads as "structural
    change" rather than the destructive red / amber chrome of
    destroy / rebuild. See docs/web-ui.md::Selection bar. */

frontend/packages/dashboard/src/swarm.js

@@ -783,9 +783,19 @@ export function renderSelectionBar(containers) {
   actions.replaceChildren();
   const allRunning = selected.every((c) => c.running);
   const allStopped = selected.every((c) => !c.running);
+  // Pause/resume is orthogonal to running (see hive-agent-menu.js's own
+  // comment on the per-agent version of these two actions) — a paused
+  // stopped agent boots paused, a paused running agent keeps its
+  // container but drives no turns. Same all-or-nothing enablement rule
+  // as every other bulk action here: mixed pause state disables the
+  // button rather than silently no-op'ing on part of the selection.
+  const allUnpaused = selected.every((c) => !c.paused);
+  const allPaused = selected.every((c) => c.paused);
 
   const stoppedNames = selected.filter((c) => !c.running).map((c) => c.name);
   const runningNames = selected.filter((c) => c.running).map((c) => c.name);
+  const pausedNames = selected.filter((c) => c.paused).map((c) => c.name);
+  const unpausedNames = selected.filter((c) => !c.paused).map((c) => c.name);
 
   function why(label, blockers) {
     if (!blockers.length) return null;
@@ -811,6 +821,16 @@ export function renderSelectionBar(containers) {
     confirm: (names) => `start ${names.length} agent${names.length === 1 ? '' : 's'} (${names.join(', ')})?`,
     disabledTitle: why('▶ ST4RT', runningNames.map((n) => `\`${n}\` is already running`)),
   });
+  addBulkButton(actions, 'btn-pause', '⏸ P4US3', allUnpaused, selected, {
+    action: '/api/pause/',
+    confirm: (names) => `pause ${names.length} agent${names.length === 1 ? '' : 's'} (${names.join(', ')})? parks the turn loop — inbox messages queue unacked.`,
+    disabledTitle: why('⏸ P4US3', pausedNames.map((n) => `\`${n}\` is already paused`)),
+  });
+  addBulkButton(actions, 'btn-resume', '▶ R3SUM3', allPaused, selected, {
+    action: '/api/resume/',
+    confirm: (names) => `resume ${names.length} agent${names.length === 1 ? '' : 's'} (${names.join(', ')})? the turn loop restarts and drains queued messages.`,
+    disabledTitle: why('▶ R3SUM3', unpausedNames.map((n) => `\`${n}\` is not paused`)),
+  });
   addBulkButton(actions, 'btn-rebuild', '↻ R3BU1LD', true, selected, {
     action: '/api/rebuild/',
     confirm: (names) => `rebuild ${names.length} agent${names.length === 1 ? '' : 's'} (${names.join(', ')})? hot-reloads each container.`,