feat: initial commit — crema-app-aifirst-template

Hybrid traditional + AI-first webapp scaffold. Sibling to crema-app-template,
adds the AI assistant surface, command bus, scripts dialog, and virtual
cursor.

What's pre-wired:
- 6 routes: Overview, Resources, Activity, Assistant, Library, Settings
- Collapsible rail + appbar + avatar dropdown shell (template code, not a lib)
- Mobile sheet at <md
- /assistant: streaming chat via @crema/llm-ui, mock fallback, model selector,
  token meter, retry probe, stop-while-streaming, persistent UI Control toggle
- /settings: editable LM Studio endpoint + context window + response cap, with
  test-connection button
- Markdown rendering for assistant replies; ```action``` blocks rendered as a
  small "Ran N actions" pill
- ⌘⇧P script runner dialog + Play icon in the appbar
- Two demo scripts in public/scripts/
- mightypix theme as default, scoped via <AppShell theme="mightypix">

Libs wired in tsconfig + app.css:
- @crema/action-bus (the bus, parser, runner, cursor, provider, ws, llm-bridge)
- @crema/llm-ui, @crema/chat-ui, @crema/aifirst-ui, @crema/notification-ui
- lib-theme-mightypix

Docs:
- README.md — pitch + quick start + structure
- docs/AI_FIRST.md — full system tour (data-action contract, bus, DSL, scripts,
  cursor, LLM integration)
- app/components/layout/THEME_CONTRACT.md — every CSS variable a theme must declare
- CLAUDE.md — orientation for an LLM working in the repo

Genericized from comfy-cloud (the original prototype):
- Brand defaults to "App" / Sparkles icon (override via app/lib/identity.ts)
- User defaults to a stub (swap useUser() for real auth)
- localStorage namespace is "crema.*" (was "comfy.*")

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/routes/activity.tsx

@@ -0,0 +1,43 @@
+import { Activity } from "lucide-react"
+
+import { AppShell } from "~/components/layout/app-shell"
+import {
+  Card,
+  CardContent,
+  CardDescription,
+  CardHeader,
+  CardTitle,
+} from "~/components/ui/card"
+import { pageTitle } from "~/lib/page-meta"
+
+export const meta = () => pageTitle("Activity")
+
+export default function ActivityRoute() {
+  return (
+    <AppShell title="Activity">
+      <Card>
+        <CardHeader>
+          <CardTitle>Activity</CardTitle>
+          <CardDescription>
+            Event stream, audit log, recent changes.
+          </CardDescription>
+        </CardHeader>
+        <CardContent>
+          <div className="flex flex-col items-center justify-center gap-3 rounded-lg border-2 border-dashed border-muted-foreground/20 bg-muted/30 p-12 text-center">
+            <div className="flex size-12 items-center justify-center rounded-xl bg-background text-muted-foreground">
+              <Activity className="size-6" />
+            </div>
+            <div className="max-w-md">
+              <p className="font-medium">No activity yet</p>
+              <p className="mt-1 text-sm text-muted-foreground">
+                Once your app is doing things, this is where audit events,
+                webhook deliveries, and recent changes show up — pair with{" "}
+                <code className="font-mono text-xs">@crema/log-ui</code>.
+              </p>
+            </div>
+          </div>
+        </CardContent>
+      </Card>
+    </AppShell>
+  )
+}