feat: stream list view and tasks (#279)

* first attempt at stream sidebar, tasks, and events

* fix folder from root

* cleanup folders and events, and condense changes

* cleanup and add toggle for sidebar

* cleanup

* fix nits

js/desktop/src/features/particles/particle-view-resolver.tsx

@@ -2,12 +2,19 @@ import { useEffect } from 'react';
 import { useNavigate, useParams } from 'react-router-dom';
 import { useQueryClient } from '@tanstack/react-query';
 import { Lock } from 'lucide-react';
+import { isParticleDeleted, type Particle } from '@/api/types';
 import { useLiveParticle } from '@/hooks/use-particle';
-import { particlePath } from '@/lib/particle-path';
+import { particlePath, type ParticlePath } from '@/lib/particle-path';
 import { Button } from '@/components/ui/button';
 
+import Layout from '@/features/layout';
 import { StreamView } from '@/features/particles/stream-view';
 import { FolderView } from '@/features/particles/folder-view';
+import { MediaParticleView } from '@/features/particles/media-particle-view';
+import { TextParticleView } from '@/features/particles/text-particle-view';
+import { TaskParticleView } from '@/features/particles/task-particle-view';
+import { FallbackParticleView } from '@/features/particles/fallback-particle-view';
+import { DeletedParticleView } from '@/features/particles/deleted-particle-view';
 
 /**
  * Route-level component for /:networkId/*.
@@ -25,9 +32,11 @@ export default function ParticleViewResolver() {
 
   if (isLoading) {
     return (
-      <div className="flex h-full items-center justify-center">
-        <p className="text-muted-foreground text-sm">Loading...</p>
-      </div>
+      <Layout>
+        <div className="flex h-full items-center justify-center">
+          <p className="text-muted-foreground text-sm">Loading...</p>
+        </div>
+      </Layout>
     );
   }
 
@@ -35,25 +44,106 @@ export default function ParticleViewResolver() {
     // Errors here are almost always Firestore permission-denied — the user lost
     // access to the network or to a custom-visibility particle. The React Router
     // stays on the dead route, so without an explicit escape the user is stuck.
-    return <InaccessibleParticle />;
+    return (
+      <Layout>
+        <InaccessibleParticle />
+      </Layout>
+    );
   }
 
+  // Streams render their own full-screen chrome; folders and leaves live
+  // inside the app Layout (breadcrumbs, full-height column) like the root.
   switch (particle.type) {
     case 'stream':
       return <StreamView streamParticle={particle} path={path} />;
     case 'folder':
-      return <FolderView folderParticle={particle} path={path} />;
+      return (
+        <Layout>
+          <FolderView folderParticle={particle} path={path} />
+        </Layout>
+      );
     default:
       return (
-        <div className="flex h-full items-center justify-center">
-          <p className="text-muted-foreground text-sm">
-            {particle.type} particle: {particle.id}
-          </p>
-        </div>
+        <Layout>
+          <LeafParticleView
+            particle={particle}
+            containerPath={particlePath(networkId, segments.slice(0, -1))}
+            networkId={networkId}
+          />
+        </Layout>
       );
   }
 }
 
+const noop = () => {};
+
+/**
+ * Standalone view for a leaf particle opened directly (e.g. from a folder),
+ * outside any stream playback: renders the particle's native view with no
+ * auto-advance.
+ */
+function LeafParticleView({
+  particle,
+  containerPath,
+  networkId,
+}: {
+  particle: Particle;
+  containerPath: ParticlePath;
+  networkId: string;
+}) {
+  const content = (() => {
+    if (isParticleDeleted(particle)) {
+      return (
+        <DeletedParticleView
+          particle={particle}
+          networkId={networkId}
+          paused
+          onEnded={noop}
+        />
+      );
+    }
+    switch (particle.type) {
+      case 'media':
+        return (
+          <MediaParticleView
+            particle={particle}
+            streamPath={containerPath}
+            paused={false}
+            onEnded={noop}
+          />
+        );
+      case 'text':
+        return (
+          <TextParticleView
+            particle={particle}
+            streamPath={containerPath}
+            paused
+            onEnded={noop}
+          />
+        );
+      case 'task':
+        return (
+          <TaskParticleView
+            particle={particle}
+            containerPath={containerPath}
+            paused
+            onEnded={noop}
+          />
+        );
+      default:
+        return (
+          <FallbackParticleView particle={particle} networkId={networkId} />
+        );
+    }
+  })();
+
+  return (
+    <div className="min-h-0 flex-1 bg-black text-white [--stream-safe-top:2rem] [--stream-safe-bottom:2rem]">
+      {content}
+    </div>
+  );
+}
+
 function InaccessibleParticle() {
   const navigate = useNavigate();
   const queryClient = useQueryClient();