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/components/ui/native-select.tsx

@@ -0,0 +1,61 @@
+import * as React from "react"
+
+import { cn } from "~/lib/utils"
+import { ChevronDownIcon } from "lucide-react"
+
+type NativeSelectProps = Omit<React.ComponentProps<"select">, "size"> & {
+  size?: "sm" | "default"
+}
+
+function NativeSelect({
+  className,
+  size = "default",
+  ...props
+}: NativeSelectProps) {
+  return (
+    <div
+      className={cn(
+        "group/native-select relative w-fit has-[select:disabled]:opacity-50",
+        className
+      )}
+      data-slot="native-select-wrapper"
+      data-size={size}
+    >
+      <select
+        data-slot="native-select"
+        data-size={size}
+        className="h-8 w-full min-w-0 appearance-none rounded-lg border border-input bg-transparent py-1 pr-8 pl-2.5 text-sm transition-colors outline-none select-none selection:bg-primary selection:text-primary-foreground placeholder:text-muted-foreground focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50 disabled:pointer-events-none disabled:cursor-not-allowed aria-invalid:border-destructive aria-invalid:ring-3 aria-invalid:ring-destructive/20 data-[size=sm]:h-7 data-[size=sm]:rounded-[min(var(--radius-md),10px)] data-[size=sm]:py-0.5 dark:bg-input/30 dark:hover:bg-input/50 dark:aria-invalid:border-destructive/50 dark:aria-invalid:ring-destructive/40"
+        {...props}
+      />
+      <ChevronDownIcon className="pointer-events-none absolute top-1/2 right-2.5 size-4 -translate-y-1/2 text-muted-foreground select-none" aria-hidden="true" data-slot="native-select-icon" />
+    </div>
+  )
+}
+
+function NativeSelectOption({
+  className,
+  ...props
+}: React.ComponentProps<"option">) {
+  return (
+    <option
+      data-slot="native-select-option"
+      className={cn("bg-[Canvas] text-[CanvasText]", className)}
+      {...props}
+    />
+  )
+}
+
+function NativeSelectOptGroup({
+  className,
+  ...props
+}: React.ComponentProps<"optgroup">) {
+  return (
+    <optgroup
+      data-slot="native-select-optgroup"
+      className={cn("bg-[Canvas] text-[CanvasText]", className)}
+      {...props}
+    />
+  )
+}
+
+export { NativeSelect, NativeSelectOptGroup, NativeSelectOption }