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/chip.tsx

@@ -0,0 +1,48 @@
+import { cva, type VariantProps } from "class-variance-authority"
+import type { ComponentProps } from "react"
+
+import { cn } from "~/lib/utils"
+
+const chipVariants = cva(
+  "inline-flex shrink-0 items-center gap-1 rounded-full border text-xs font-medium whitespace-nowrap transition-colors outline-none select-none focus-visible:ring-3 focus-visible:ring-ring/50 disabled:pointer-events-none disabled:opacity-50 aria-pressed:border-transparent [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-3.5",
+  {
+    variants: {
+      variant: {
+        default:
+          "border-border bg-background text-foreground hover:bg-muted aria-pressed:bg-primary aria-pressed:text-primary-foreground",
+        secondary:
+          "border-transparent bg-secondary text-secondary-foreground hover:bg-secondary/80 aria-pressed:bg-primary aria-pressed:text-primary-foreground",
+      },
+      size: {
+        default: "h-7 px-3",
+        sm: "h-6 px-2.5",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+)
+
+function Chip({
+  className,
+  variant = "default",
+  size = "default",
+  active,
+  type = "button",
+  ...props
+}: ComponentProps<"button"> &
+  VariantProps<typeof chipVariants> & { active?: boolean }) {
+  return (
+    <button
+      data-slot="chip"
+      type={type}
+      aria-pressed={active}
+      className={cn(chipVariants({ variant, size, className }))}
+      {...props}
+    />
+  )
+}
+
+export { Chip, chipVariants }