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/app.css

@@ -0,0 +1,116 @@
+/* Active theme — must be first so its @import url() font directives resolve
+ * to the top of the output. Themes are self-contained: tokens + fonts. */
+@import "../../lib-theme-mightypix/theme.css";   /* CREMA:THEME */
+@import "tailwindcss";
+@import "tw-animate-css";
+@import "shadcn/tailwind.css";
+
+@source "../../lib-chat-ui/src";
+@source "../../lib-aifirst-ui/src";
+@source "../../lib-llm-ui/src";
+@source "../../lib-action-bus/src";
+/* CREMA:SOURCES */
+
+@custom-variant dark (&:is(.dark *));
+
+@theme inline {
+    --font-heading: "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
+    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
+    --font-ai-prose: "Source Serif 4", Georgia, serif;
+    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
+    --color-sidebar-ring: var(--sidebar-ring);
+    --color-sidebar-border: var(--sidebar-border);
+    --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
+    --color-sidebar-accent: var(--sidebar-accent);
+    --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
+    --color-sidebar-primary: var(--sidebar-primary);
+    --color-sidebar-foreground: var(--sidebar-foreground);
+    --color-sidebar: var(--sidebar);
+    --color-chart-5: var(--chart-5);
+    --color-chart-4: var(--chart-4);
+    --color-chart-3: var(--chart-3);
+    --color-chart-2: var(--chart-2);
+    --color-chart-1: var(--chart-1);
+    --color-ring: var(--ring);
+    --color-input: var(--input);
+    --color-border: var(--border);
+    --color-destructive: var(--destructive);
+    --color-success: var(--success);
+    --color-success-foreground: var(--success-foreground);
+    --color-syntax-keyword: var(--syntax-keyword);
+    --color-syntax-string: var(--syntax-string);
+    --color-syntax-number: var(--syntax-number);
+    --color-syntax-comment: var(--syntax-comment);
+    --color-syntax-function: var(--syntax-function);
+    --color-syntax-type: var(--syntax-type);
+    --color-accent-foreground: var(--accent-foreground);
+    --color-accent: var(--accent);
+    --color-muted-foreground: var(--muted-foreground);
+    --color-muted: var(--muted);
+    --color-secondary-foreground: var(--secondary-foreground);
+    --color-secondary: var(--secondary);
+    --color-primary-foreground: var(--primary-foreground);
+    --color-primary: var(--primary);
+    --color-popover-foreground: var(--popover-foreground);
+    --color-popover: var(--popover);
+    --color-card-foreground: var(--card-foreground);
+    --color-card: var(--card);
+    --color-foreground: var(--foreground);
+    --color-background: var(--background);
+    --ease-standard: var(--ease-standard);
+    --ease-emphasized: var(--ease-emphasized);
+    --ease-decelerate: var(--ease-decelerate);
+    --ease-accelerate: var(--ease-accelerate);
+    --ease-spring-gentle: var(--ease-spring-gentle);
+    --ease-spring-snappy: var(--ease-spring-snappy);
+    --ease-spring-bouncy: var(--ease-spring-bouncy);
+    --duration-spring: var(--duration-spring);
+    --duration-fast: var(--duration-fast);
+    --duration-base: var(--duration-base);
+    --duration-slow: var(--duration-slow);
+    --duration-slower: var(--duration-slower);
+    --text-display: var(--text-display-size);
+    --text-display--line-height: var(--text-display-lh);
+    --text-headline: var(--text-headline-size);
+    --text-headline--line-height: var(--text-headline-lh);
+    --text-title: var(--text-title-size);
+    --text-title--line-height: var(--text-title-lh);
+    --text-body: var(--text-body-size);
+    --text-body--line-height: var(--text-body-lh);
+    --text-label: var(--text-label-size);
+    --text-label--line-height: var(--text-label-lh);
+    --text-caption: var(--text-caption-size);
+    --text-caption--line-height: var(--text-caption-lh);
+    --shadow-e0: var(--elevation-0);
+    --shadow-e1: var(--elevation-1);
+    --shadow-e2: var(--elevation-2);
+    --shadow-e3: var(--elevation-3);
+    --shadow-e4: var(--elevation-4);
+    --shadow-e5: var(--elevation-5);
+    --border-width-thin: var(--border-width-thin);
+    --border-width-base: var(--border-width-base);
+    --border-width-thick: var(--border-width-thick);
+    --border-width-heavy: var(--border-width-heavy);
+    --radius-sm: calc(var(--radius) * 0.5);
+    --radius-md: calc(var(--radius) * 0.75);
+    --radius-lg: var(--radius);
+    --radius-xl: calc(var(--radius) * 1.15);
+    --radius-2xl: calc(var(--radius) * 1.3);
+    --radius-3xl: calc(var(--radius) * 1.5);
+    --radius-4xl: calc(var(--radius) * 1.75);
+}
+
+@layer base {
+  * {
+    @apply border-border outline-ring/50;
+    }
+  body {
+    @apply bg-background text-foreground;
+    overscroll-behavior-y: none;
+    }
+  html {
+    @apply font-sans;
+    font-size: 18px;
+    overscroll-behavior-y: none;
+    }
+}