feat(v1): bloquants release v1 — tests, stories, visual regression, gouvernance, publishing

6 chantiers v1 sur 7 livrés (DataTable refonte reportée car nécessite
2-3j en propre — TanStack Table + virtualisation + filter builder).

v1-A — Tests (4 → 22 fichiers) :
- Avatar, AvatarGroup, UserCard, MetricCard, ProfileHeader, Tooltip,
  Sheet, Drawer, Slider, ToggleGroup, Tabs, Pagination, Accordion,
  Switch, Badge, ConfirmDialog, Popover, Menu, Text, PricingCard,
  FeatureCard, Toast — chacun avec render + clavier + axe-core.

v1-B — Storybook (7 → 23 fichiers) :
- Avatar, UserCard, ProfileHeader, MetricCard, PricingCard,
  FeatureCard, Sheet (4 sides), HoverCard, Slider, ToggleGroup,
  Menu+ContextMenu, Toast (avec démo "Empiler 5"), Tabs,
  Pagination, Accordion, Badge.

v1-D — Visual regression Playwright :
- playwright.config.ts (light + dark, threshold strict 0.2)
- e2e/visual.spec.ts (20 stories critiques)
- Step CI + upload report en cas de fail

v1-E — Site doc Starlight rempli :
- 11 pages composants détaillées (Button, Input, Tooltip, Dialog,
  Toast, Avatar, ThemePicker, MetricCard, PricingCard, ToggleGroup,
  Slider) avec API, anatomie, do/don't, A11y.

v1-F — Publishing Verdaccio :
- verdaccio/config.yaml, docker-compose.verdaccio.yml, .npmrc
- README setup local + déploiement prod + backups + sécurité

v1-G — Gouvernance :
- LICENSE, CONTRIBUTING.md, CODE_OF_CONDUCT.md, SECURITY.md
- CODEOWNERS, PR template, 3 issue templates (bug/feature/rfc)

Bug fix bonus : tooltip dark mode (text-primary comme bg + text-inverse
comme texte → blanc-sur-blanc invisible). Remplacé par neutral-900/0
en light + bg-raised/text-primary en dark.

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

playwright.config.ts

@@ -0,0 +1,55 @@
+import { defineConfig, devices } from "@playwright/test";
+
+/**
+ * DSMMG — Playwright config (visual regression sur Storybook).
+ *
+ * Stratégie : on build Storybook en static, on le sert localement,
+ * on prend des screenshots des stories critiques (light + dark) et
+ * on compare au baseline. Les régressions visuelles cassent la CI.
+ */
+export default defineConfig({
+  testDir: "./e2e",
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 2 : undefined,
+  reporter: process.env.CI ? [["html", { open: "never" }], ["github"]] : "list",
+  timeout: 30_000,
+  expect: {
+    /**
+     * Threshold de différence visuelle. 0.2 = très strict (pixel-near).
+     * Ajuster si flakiness sur le rendu des fonts.
+     */
+    toHaveScreenshot: {
+      threshold: 0.2,
+      maxDiffPixelRatio: 0.005,
+      animations: "disabled",
+      caret: "hide",
+    },
+  },
+  use: {
+    baseURL: "http://localhost:6006",
+    trace: "on-first-retry",
+    video: "retain-on-failure",
+    screenshot: "only-on-failure",
+    viewport: { width: 1280, height: 800 },
+    colorScheme: "light",
+  },
+  projects: [
+    {
+      name: "chromium-light",
+      use: { ...devices["Desktop Chrome"], colorScheme: "light" },
+    },
+    {
+      name: "chromium-dark",
+      use: { ...devices["Desktop Chrome"], colorScheme: "dark" },
+    },
+    // Ajouter Firefox / WebKit en CI quand le baseline sera stable
+  ],
+  webServer: {
+    command: "pnpm --filter storybook build && pnpm --filter storybook preview",
+    url: "http://localhost:6006",
+    reuseExistingServer: !process.env.CI,
+    timeout: 180_000,
+  },
+});