dashboard: the SW4RM tab is the agents tab

The swarm lives in the swarm UI; this tab lists the hive's agents. The tab
is 4G3NTS at #agents, its pane and count pill follow, and the module that
renders the containers is agents.js. Comments and docs that named SW4RM or
swarm.js follow.

frontend/packages/dashboard/src/agent-menu/hive-agent-menu.js

@@ -1,6 +1,6 @@
 // hive-agent-menu.js — <hive-agent-menu>, the per-agent "⋮" context-menu
 // custom element. One instance per agent card, appended after
-// .card-body in the container row's flex layout (swarm.js's
+// .card-body in the container row's flex layout (agents.js's
 // buildContainerLi via buildAgentMenu).
 //
 // Deliberately a *light-DOM* element with no shadow root of its own: all
@@ -66,7 +66,7 @@ async function agentMenuPost(actionPath, name, body, flags) {
 class HiveAgentMenu extends HTMLElement {
   connectedCallback() {
     // Same reconnect-without-detach hazard as <hive-menu> (see its
-    // connectedCallback comment) — swarm.js's row cache can move an
+    // connectedCallback comment) — agents.js's row cache can move an
     // already-built <li> subtree without a real detach. Without this
     // guard a reconnect would append a second <hive-menu> on top of the
     // first, doubling the dropdown.