chore: add design-sync config for Claude Design upload

.design-sync/NOTES.md

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+# Design Sync Notes — Gamut
+
+## Setup
+
+- Package manager: yarn (hoisted node_modules at repo root)
+- Node version: v22 (.nvmrc: v22.13.1)
+- Shape: storybook — `.storybook` at `packages/styleguide/.storybook`
+- DS entry: `packages/gamut/dist/index.js` (already compiled — barrel re-exports)
+- node_modules for converter: pass `--node-modules /Users/cass/code/cc/gamut/node_modules` (react/react-dom hoisted to root)
+
+## Storybook build — must use NX, not plain `npx storybook build`
+
+`main.ts` loads `require.resolve('@nx/react/plugins/storybook')` which requires NX project context.
+Plain `npx storybook build` fails with: `TypeError: Cannot read properties of undefined (reading 'data')` in `@nx/react/plugins/storybook/index.js`.
+
+**Build command** (run from repo root):
+
+```bash
+yarn nx run styleguide:build-storybook --outputDir="$(pwd)/.design-sync/sb-reference"
+```
+
+## Fonts — CDN-served, not local
+
+Fonts are served from `https://www.codecademy.com/gamut` (defined in `packages/gamut-styles/src/remoteAssets/fonts.ts`).
+Fonts loaded dynamically via Emotion `@font-face` rules injected by `<Typography>` inside `GamutProvider`.
+
+- Core theme: Apercu (regular, italic, bold, bold-italic) + Suisse (bold, regular)
+- Other themes may have different font stacks
+
+Config key: `runtimeFontPrefixes: ["https://www.codecademy.com/gamut"]`
+
+## Dist patch — re-apply after `yarn build`
+
+`packages/gamut/dist/Video/lib/VidstackPlayer.js` line 4: import changed from `.scss` to `.css` for esbuild compatibility.
+`packages/gamut/dist/Video/styles/vds_base_theme.css` (empty): created alongside the `.scss` so the import resolves.
+
+`Markdown` imports `Video` transitively, so both would fail without this patch.
+After any `yarn build` re-run, re-apply:
+
+```bash
+sed -i '' "s|import '../styles/vds_base_theme.scss'|import '../styles/vds_base_theme.css' // patched for design-sync: .scss unsupported by esbuild|" packages/gamut/dist/Video/lib/VidstackPlayer.js
+printf '/* @ds-css-runtime: vds_base_theme.scss patched to .css stub for esbuild compatibility */\n' > packages/gamut/dist/Video/styles/vds_base_theme.css
+```
+
+The `@ds-css-runtime` marker in the CSS stub is important: esbuild extracts the stub into `_ds_bundle.css`, and the validator recognises the marker as "CSS-in-JS, no compiled stylesheet" instead of failing with `[CSS_PLACEHOLDER]`.
+
+## Re-sync risks
+
+- Font CDN (`https://www.codecademy.com/gamut`) must be reachable during compare runs — storybook and previews both load fonts from there
+- Storybook webpack aliases point at package `src/` directly (e.g. `@codecademy/gamut → packages/gamut/src`) — storybook builds TS source, not dist; converter bundles dist
+
+## Known grade notes (2026-06-26 sync)
+
+### tsconfig path
+
+`cfgPath()` resolves relative to `PKG_DIR = packages/gamut`, not repo root.
+Correct value: `"../../.design-sync/tsconfig.json"` (two levels up reaches repo root).
+Three levels (`../../../`) goes above the repo and fails silently with "not found".
+
+### ConnectedForm — duplicate story display name
+
+ConnectedForm has two stories both named "Default" (different story IDs: `connectedform--default` and `connectedforminputs--default`).
+Grade file can only hold one `"Default"` key — the second overwrote the first.
+Graded: `Default → close` (story 1: valid form render, viewport width difference), `Watched Fields → match`.
+The second "Default" story is an sb-error (auto-handled by compare, no grade entry needed).
+
+### SkipToContent — blank-by-design
+
+Component is visually hidden until focused; storybook and preview both render blank at rest.
+Graded `match` with note — not a render failure.
+
+### RadialProgress/Animating — animation capture artifact
+
+Storybook captured a black canvas frame mid-animation; preview rendered at rest (blank).
+Not a real render difference — animation is non-deterministic at capture time.
+Graded `close` with note. Default and Children stories confirm the component renders correctly.
+
+### Theme export — extraEntries fix
+
+`@codecademy/gamut-styles` dist/index.js exports only `coreTheme as theme` (not named exports).
+Added `@codecademy/gamut-styles/dist/themes` as a second extraEntry to expose all 5 named themes:
+`coreTheme`, `adminTheme`, `platformTheme`, `lxStudioTheme`, `percipioTheme`.
+Without this, `$ref: "coreTheme"` in the provider config resolved to `undefined`.

.design-sync/config.json

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+{
+  "projectId": "266cff67-7436-40c1-9899-2f4830adbc65",
+  "pkg": "@codecademy/gamut",
+  "shape": "storybook",
+  "storybookConfigDir": "packages/styleguide/.storybook",
+  "storybookStatic": ".design-sync/sb-reference",
+  "buildCmd": "yarn nx run-many --target=build --projects=variance,gamut-styles,gamut-icons,gamut-patterns,gamut-illustrations,gamut && sed -i '' \"s|import '../styles/vds_base_theme.scss'|import '../styles/vds_base_theme.css' // patched for design-sync|\" packages/gamut/dist/Video/lib/VidstackPlayer.js && printf '/* @ds-css-runtime: vds_base_theme.scss patched to .css stub for esbuild compatibility */\\n' > packages/gamut/dist/Video/styles/vds_base_theme.css",
+  "extraEntries": [
+    "@codecademy/gamut-styles",
+    "@codecademy/gamut-styles/dist/themes"
+  ],
+  "readmeHeader": ".design-sync/conventions.md",
+  "runtimeFontPrefixes": ["https://www.codecademy.com/gamut"],
+  "tsconfig": "../../.design-sync/tsconfig.json",
+  "libOverrides": {
+    "bundle.mjs": "enable minification — icons-as-code push unminified bundle to 5.2MB, over the 5MB upload limit",
+    "source-storybook.mjs": "group components by Storybook's top-level sidebar category (atoms/molecules/organisms/layouts/typography) instead of the segment immediately preceding the component name — full nested paths were tried and reverted, they break emit.mjs's hardcoded 3-level asset paths",
+    "docs.mjs": "append a fixed semantic-color/no-hex/no-inline-style footer to every ingested component doc — the fast path (setup doc -> one component's .prompt.md -> build) skips guidelines/conventions.md, so this is the one reinforcement that path can't skip"
+  },
+  "titleMap": {
+    "Border": null,
+    "Color": null,
+    "Layout": null,
+    "Positioning": null,
+    "Space": null,
+    "Responsiveproperties": null,
+    "Button": null,
+    "Mini": null,
+    "Regular": null,
+    "Illustrations": null,
+    "Patterns": null
+  },
+  "overrides": {
+    "Card": { "cardMode": "column" },
+    "PopoverContainer": { "cardMode": "column" },
+    "Tag": { "cardMode": "column" },
+    "GridBox": { "cardMode": "column" },
+    "ConnectedFormGroup": { "cardMode": "column" },
+    "SubmitButton": { "cardMode": "column" },
+    "FormGroup": { "cardMode": "column" },
+    "Radio": { "cardMode": "column" },
+    "Pagination": { "cardMode": "column" },
+    "Tabs": { "cardMode": "column" },
+    "InfoTip": { "cardMode": "column" },
+    "PreviewTip": { "cardMode": "column" },
+    "ToolTip": { "cardMode": "column" },
+    "Anchor": { "cardMode": "column" },
+    "Text": { "cardMode": "column" },
+    "SelectDropdown": { "cardMode": "single", "primaryStory": "Default" },
+    "List": { "cardMode": "single", "primaryStory": "Default" },
+    "DataList": { "cardMode": "single", "primaryStory": "Default" },
+    "DataTable": { "cardMode": "single", "primaryStory": "Default" },
+    "Alert": { "cardMode": "single", "primaryStory": "Default" },
+    "Popover": { "cardMode": "single", "primaryStory": "Default" },
+    "Toaster": { "cardMode": "single", "primaryStory": "Default" },
+    "BarChart": { "cardMode": "single", "primaryStory": "Default" },
+    "DatePicker": { "cardMode": "single", "primaryStory": "Default" },
+    "GridForm": { "cardMode": "single", "primaryStory": "Default" },
+    "Video": { "cardMode": "column" },
+    "Markdown": { "cardMode": "single", "primaryStory": "Default" }
+  },
+  "provider": {
+    "component": "GamutProvider",
+    "props": {
+      "theme": { "$ref": "percipioTheme" }
+    },
+    "inner": {
+      "component": "ColorMode",
+      "props": {
+        "mode": "light"
+      }
+    }
+  }
+}

.design-sync/conventions.md

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+# Gamut Design System
+
+> **STOP — required reading before generating any code.** Read these in order before writing a single line; this is a gate, not a suggestion:
+>
+> 1. `guidelines/Guidelines.md`
+> 2. `guidelines/overview-components.md` (the pattern → component discovery table)
+> 3. `guidelines/overview-styling.md` (the styling do/don't list)
+> 4. `guidelines/design-tokens/colors.md` + `guidelines/components/color-mode.md`
+> 5. The per-component `.prompt.md` for every component you will use.
+
+This is Codecademy's Gamut design system — the same components, tokens, and
+patterns used across Codecademy and Skillsoft's Percipio product. Every
+component in this project is browsable below, grouped the way they're
+organized in Gamut's own Storybook (Atoms, Molecules, Organisms, Layouts,
+Typography). Build with these components rather than one-off equivalents —
+they carry accessibility, theming, and interaction behavior that a hand-built
+version would have to reimplement.
+
+## Non-negotiables
+
+1. **Props-only — no inline `style`, no inline `css` prop, no `className` for layout, spacing, or color.** Every system-prop-expressible style goes through a Gamut prop, `css()`, `variant()`, or `states()` — not Emotion's `css={...}` JSX prop written inline on an element. Any inline `style`/`css` or hex value is a **departure** and must be called out explicitly (see #5) — it is never a silent default.
+2. **Every color is a semantic token — never hex.** `text`, `background`, `primary`, `feedback-error`, etc. See `guidelines/design-tokens/colors.md`.
+3. **Wrap the tree in `ColorMode`.** Semantic tokens only resolve inside it.
+4. **Prefer purpose-built components over `Box`/`FlexBox` rebuilds.** `List`/`DataList`/`DataTable`/`Tabs`/`Badge`/`Tag` carry accessibility and theming a hand-built version doesn't.
+5. **Call out departures — never ship them silently.** If a build genuinely needs a hex value or a `className`, say so explicitly. This applies just as much to the _request itself_: if the designer/user asks for something outside system props, tokens, or semantic tokens (an exact hex, an arbitrary pixel value off the spacing scale, a one-off font size), tell them it deviates from the system before implementing it — don't silently comply, and don't silently substitute the nearest token without saying so.
+
+## Wrapping and setup
+
+Every Gamut component must be rendered inside `GamutProvider`. Without it, the theme tokens (spacing, typography, colors) are undefined and components render unstyled or throw.
+
+```jsx
+import { GamutProvider, ColorMode, FillButton } from './CodecademyGamut';
+
+function App() {
+  return (
+    <GamutProvider theme={percipioTheme}>
+      <ColorMode mode="light">
+        {/* components here */}
+        <FillButton>Click Me</FillButton>
+      </ColorMode>
+    </GamutProvider>
+  );
+}
+```
+
+Five themes are available — choose one based on the target product context. **`percipioTheme` is the default for this project.**
+
+| Theme export    | Product context                        |
+| --------------- | -------------------------------------- |
+| `percipioTheme` | Percipio integration (**default**)     |
+| `coreTheme`     | Codecademy web (Apercu + Suisse fonts) |
+| `platformTheme` | Platform / learner experience          |
+| `adminTheme`    | Admin and internal tooling             |
+| `lxStudioTheme` | LX Studio                              |
+
+Pass the theme object to `GamutProvider`'s `theme` prop: `<GamutProvider theme={platformTheme}>`. The `ColorMode` component controls light/dark: `mode="light"` or `mode="dark"`.
+
+## Styling idiom
+
+Gamut is **props-only** — no CSS utility classes. Layout, spacing, and color all go through system props on components like `Box`, `FlexBox`, and `GridBox`. Do not write `className` strings or inline `style` for design-system layout.
+
+```jsx
+<Box padding="16px" backgroundColor="background" border={1} borderRadius="sm">
+  content
+</Box>
+
+<FlexBox alignItems="center" gap="8px" flexDirection="row">
+  <FillButton>Primary</FillButton>
+  <StrokeButton>Secondary</StrokeButton>
+</FlexBox>
+```
+
+For color values, use semantic theme keys (defined in the active theme) rather than hex. `ColorMode` injects the light or dark palette — components read from it automatically, as CSS custom properties (`--color-*`) it sets at runtime. (The stats near the bottom of this README may say "0 CSS custom properties" — that's a static-bundle scan, not a statement about runtime; `ColorMode`'s injected properties are real and readable via `var(--color-border-secondary)` etc. if you ever need to. Full mapping table in `guidelines/components/color-mode.md`.)
+
+Most-used semantic tokens (Core theme, light/dark — see the theme-specific `guidelines/design-tokens/theme-*.md` for other themes' actual values):
+
+| Token                | Light       | Dark         | Use for                           |
+| -------------------- | ----------- | ------------ | --------------------------------- |
+| `text`               | `navy-800`  | `white`      | Default body/UI text              |
+| `background`         | `white`     | `navy-800`   | Default page/component background |
+| `background-primary` | `beige`     | `navy-900`   | Slightly elevated surfaces        |
+| `primary`            | `hyper-500` | `yellow-500` | Primary CTA, links, focus rings   |
+| `secondary`          | `navy-800`  | `white`      | Secondary CTA, ghost buttons      |
+| `border-primary`     | `navy-800`  | `white`      | Strong borders, dividers          |
+| `feedback-error`     | `red-600`   | `red-300`    | Error messages                    |
+| `feedback-success`   | `green-700` | `green-400`  | Success messages                  |
+
+**Before composing a UI pattern from boxes**, check whether a purpose-built component already covers it — `List`/`DataList`/`DataTable` for rows of data, `Toggle` for on/off controls, `Menu` for navigation/actions, `Disclosure` for a single show/hide section (use `List`'s expandable-row pattern instead for two or more). Recreating one of these from `Box`/`FlexBox` and manual state loses built-in accessibility, keyboard handling, and theming the real component already has. See `guidelines/overview-components.md`'s Component Discovery section for the full pattern-to-component table.
+
+## Idiomatic build example
+
+A page section using Gamut components — provider at the root, system props for layout:
+
+```jsx
+const {
+  GamutProvider,
+  ColorMode,
+  FlexBox,
+  Box,
+  Text,
+  FillButton,
+  StrokeButton,
+  percipioTheme,
+} = window.CodecademyGamut;
+
+export default function HeroSection() {
+  return (
+    <GamutProvider theme={percipioTheme}>
+      <ColorMode mode="light">
+        <Box padding="48px" maxWidth="800px">
+          <Text as="h1" fontSize={34} fontWeight="title">
+            Learn to code
+          </Text>
+          <Text as="p" fontSize={16} mb="24px">
+            Join millions of learners on Codecademy.
+          </Text>
+          <FlexBox gap="12px">
+            <FillButton>Get started</FillButton>
+            <StrokeButton>Sign in</StrokeButton>
+          </FlexBox>
+        </Box>
+      </ColorMode>
+    </GamutProvider>
+  );
+}
+```
+
+## Agent Information
+
+The following is build/technical detail — useful for whoever (or whatever)
+is generating code against this system, less so for a human just browsing
+components.
+
+**Runtime loading — confirmed gotchas in this environment:** never write `const React = window.React` in an x-import `.jsx` (it's already an injected function parameter — redeclaring it throws `SyntaxError: redeclaration of formal parameter React`); load `_ds_bundle.js` only after `window.React`/`window.ReactDOM` exist (a static `<script>` tag in `<helmet>` often runs first and gets `W5.exports is undefined`); never load a second React UMD bundle to "fix" that (creates a second React instance — hooks break with `g.current is null`); and read `window.CodecademyGamut` at render time behind a ready-state guard, not by destructuring at module scope. Full pattern and code in `guidelines/overview-setup.md`.
+
+**Read `guidelines/Guidelines.md` before building anything.** It defines the
+required reading order (overview files → design tokens → per-component
+guides) for this system's usage rules — button variant selection, theming
+setup, accessibility patterns, code style, and more. Read the relevant
+per-component guide before writing code that uses that component.
+
+**Where the rest of the truth lives:**
+
+- **Component API**: each component folder (`components/<group>/<Name>/`) contains a `.d.ts` TypeScript declaration and a `.prompt.md` usage reference — read those for props and composition patterns before coding.
+- **README**: this file's body (below, auto-generated) lists all available components grouped by category.
+- **Bundle**: `_ds_bundle.js` — all components and themes are on `window.CodecademyGamut`. Import them destructured: `const { FillButton, GamutProvider, percipioTheme } = window.CodecademyGamut`.
+- **Guidelines**: `guidelines/` (start at `Guidelines.md`) — category-level usage rules and design tokens.