v0.3 infra: dev server from worktree + quietware screenshot capture

Two small infra changes to support visual verification of v0.3 phases
from a git worktree.

  - vite.config.js. server.fs.allow extended to ["..", "../.."]. When
    the dev server runs inside .worktrees/v0.3-tactile-quietware/ the
    shared node_modules sits one extra directory up, which Vite's
    default fs.strict policy rejected with HTTP 403 on the @sveltejs
    runtime client. Allowing the parent path unblocks dev runs from
    any worktree of this repo. No effect when dev runs from the main
    checkout.

  - scripts/capture-quietware-screenshots.mjs. Headless Playwright
    driver that visits /design-system-v2 (and best-effort /) under
    five attribute combinations (v0.2 baseline, quietware-dark,
    quietware-light, quietware-hc-dark, quietware-hc-light) and
    writes one PNG per combination to /tmp/lumotia-v0.3-screenshots/.
    Used to email Jake the visual proof for Phase 4a review.

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

vite.config.js

@@ -43,6 +43,12 @@ export default defineConfig(async () => ({
     watch: {
       ignored: ["**/src-tauri/**"],
     },
+    fs: {
+      // v0.3 Phase 4a screenshot capture: when dev server runs inside a
+      // git worktree (.worktrees/v0.3-tactile-quietware/) the parent
+      // node_modules sits one extra dir up. Allow the worktree root.
+      allow: ["..", "../.."],
+    },
   },
   test: {
     // jsdom gives storage-shim tests a real localStorage / DOMException /