frontend: safe fixes from the #109 punch-list

- CallSpineEntry.tsx: drop the dead `hasAudio` prop + the early `return null`
  that sat between hooks in InlinePlayer (React #310 risk). Parent already
  gates the mount on audio presence.
- NodeCard.tsx + nodes/page.tsx: pending-node card no longer double-fires.
  NodeCard gains `linkToDetail` (default true); the pending branch passes
  false so the wrapping onClick (open config modal) isn't swallowed by the
  inner <Link> navigation. List view unchanged.
- trips/page.tsx: TripCard badge now buckets on end_date >= today, matching
  the list's own upcoming/past split — an in-progress trip no longer shows a
  "Past" badge under "Upcoming".
- trips/page.tsx, NodeConfigModal.tsx, nodes/[id]/page.tsx: tall modals get
  `p-4` on the overlay + `max-h-[90vh] overflow-y-auto` on the panel so they
  don't clip on short viewports (incidents' CreateModal pattern).
- lib/types.ts: IncidentRecord.units / vehicles are optional now, matching
  Firestore (older docs omit them); incidents/[id] gains a `?? []` guard.

Untypechecked (no node/npm locally). next build in deploy.yml gates it.
Full list of remaining items in server-26 #109.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

drb-frontend/app/nodes/[id]/page.tsx

@@ -60,7 +60,7 @@ function DiscordJoinModal({
     <div className="fixed inset-0 bg-black/60 flex items-center justify-center z-50 p-4">
       <form
         onSubmit={handleSubmit}
-        className="bg-gray-900 border border-gray-700 rounded-xl p-6 space-y-4 font-mono w-full max-w-sm"
+        className="bg-gray-900 border border-gray-700 rounded-xl p-6 space-y-4 font-mono w-full max-w-sm max-h-[90vh] overflow-y-auto"
       >
         <h3 className="text-white font-semibold">Join Discord Voice</h3>
         <div>

drb-frontend/app/nodes/page.tsx

@@ -42,7 +42,7 @@ export default function NodesPage() {
           <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
             {pending.map((n) => (
               <div key={n.node_id} onClick={() => setConfigNode(n)} className="cursor-pointer">
-                <NodeCard node={n} system={systemMap[n.assigned_system_id ?? ""]} />
+                <NodeCard node={n} system={systemMap[n.assigned_system_id ?? ""]} linkToDetail={false} />
               </div>
             ))}
           </div>