dashboard: remove the spawn-new-agent trigger from the Y3R C4LL tab

Frontend half of removing hive-level agent spawning (swarm-level
creation now covers it, and its forge-works confirmation just landed
in hive/hive-chat). Removes call.js's blank-name spawn-request form
(R3QU3ST SP4WN) and its now-orphaned .spawnform CSS.

Deliberately keeps core.js's tombstone-list revive action (R3V1V3) --
a different feature (respawn an *existing* agent, reusing its kept
state), not agent creation, and not what this issue asked to remove.
It happens to post to the same /api/request-spawn action with the
tombstone's own name pre-filled rather than a blank input.

Backend endpoint + wiring is a separate slice (damocles).

docs/web-ui/dashboard.md

@@ -82,8 +82,7 @@ agent is stale.
 
 Things blocked on operator decision — the approval queue.
 
-**P3NDING APPR0VALS** — the queue (see "Approval card" below).
+**P3NDING APPR0VALS** — the queue (see "Approval card" below). A
-The R3QU3ST SP4WN form lives at the top of this section. A
 `pending · N` / `history · N` tab pair switches between the live
 queue and the last 30 resolved approvals (see "Approval card" for
 the history row shape).

frontend/packages/dashboard/src/call.js

@@ -159,33 +159,8 @@ export function renderApprovals() {
   // no-op elsewhere — `approval_added` / `approval_resolved` SSE
   // events route through here on every page that loads the bundle.
   if (!root) return;
-  // Save spawn form input + focus state before the DOM wipe so a live
-  // approval_added/resolved event doesn't erase a partially-typed name
-  // or steal focus from the operator.
-  const savedSpawnName = root.querySelector('.spawnform input[name="name"]')?.value ?? '';
-  const spawnHadFocus = document.activeElement === root.querySelector('.spawnform input[name="name"]');
   root.replaceChildren();
 
-  // Spawn request form: submitting it queues a Spawn approval that
-  // lands in this same list, so the form belongs here rather than on
-  // the containers list (the agent doesn't exist yet).
-  const spawnNameInput = el('input', {
-    name: 'name',
-    placeholder: 'new agent name (≤9 chars)',
-    maxlength: '9', required: '', autocomplete: 'off',
-  });
-  if (savedSpawnName) spawnNameInput.value = savedSpawnName;
-  if (spawnHadFocus) spawnNameInput.focus();
-  const spawn = el('form', {
-    method: 'POST', action: '/api/request-spawn',
-    class: 'spawnform', 'data-async': '', 'data-no-refresh': '',
-  });
-  spawn.append(
-    spawnNameInput,
-    el('button', { type: 'submit', class: 'btn btn-spawn' }, '◆ R3QU3ST SP4WN'),
-  );
-  root.append(spawn);
-
   const pending = approvalsState.pending;
   const history = approvalsState.history;
   const active = localStorage.getItem(APPROVAL_TAB_KEY) || 'pending';

frontend/packages/dashboard/src/dashboard.css

@@ -610,18 +610,6 @@ hive-agent-menu {
 }
 ul form.inline { display: inline-block; }
 
-.spawnform { display: flex; gap: 0.6em; align-items: stretch; margin: 0.5em 0; }
-.spawnform input {
-  font-family: inherit;
-  font-size: 1em;
-  background: var(--bg-elev);
-  color: var(--fg);
-  border: 1px solid var(--border);
-  padding: 0.4em 0.6em;
-  flex: 1;
-}
-.spawnform input::placeholder { color: var(--muted); }
-.spawnform input:focus { outline: 1px solid var(--purple); }
 .role-pending { color: var(--amber); border-color: var(--amber); }
 .btn-inline {
   font-family: inherit;