chore(design-sync): add Reactive Resume UI sync inputs (#3216)

* chore(design-sync): add Reactive Resume UI sync inputs

Sync inputs for the claude.ai/design "Reactive Resume" project — the
@reactive-resume/ui design system (39 primary components).

- .design-sync/config.json — converter config (synth-entry, 202->39 card
  prune, overlay/grid cardMode overrides, cssEntry, tsconfig, buildCmd)
- .design-sync/build-css.mjs + tw-entry.css — compile Tailwind v4 globals.css
  to a self-contained stylesheet (inlined IBM Plex font), emit real .d.ts,
  and create the workspace self-symlink the converter needs
- .design-sync/previews/*.tsx — 39 authored preview compositions
- .design-sync/conventions.md — design-agent usage header (readmeHeader)
- .design-sync/NOTES.md — re-sync notes, gotchas, and risks
- packages/ui/tsconfig.emit.json — declaration emit for real prop contracts

Build artifacts (dist/types, .ds-compiled.css, ds-bundle, .cache) are gitignored.

Claude-Session: https://claude.ai/code/session_01R8Aq8F1nTuvJwfut7g3DVE

* chore(knip): ignore .design-sync inputs and drop stale es-toolkit ignore

- Ignore .design-sync/** (design-sync tooling: build-css.mjs + authored
  previews are standalone, not part of the app import graph — knip --fix was
  deleting them and failing the autofix job).
- Remove es-toolkit from apps/server ignoreDependencies: it's now really used
  (apps/server/src/http/health.ts imports withTimeout), so the ignore is stale.

Claude-Session: https://claude.ai/code/session_01R8Aq8F1nTuvJwfut7g3DVE

.design-sync/previews/Accordion.tsx

@@ -0,0 +1,51 @@
+import { Accordion, AccordionContent, AccordionItem, AccordionTrigger } from "@reactive-resume/ui/components/accordion";
+
+const wrap: React.CSSProperties = { width: 420, padding: 16 };
+
+// Open by default so the panel content is visible in the card (Base UI accordion
+// is uncontrolled via defaultValue, matching item `value` props).
+export const Sections = () => (
+	<div style={wrap}>
+		<Accordion defaultValue={["experience"]}>
+			<AccordionItem value="experience">
+				<AccordionTrigger>Work Experience</AccordionTrigger>
+				<AccordionContent>
+					<p>Senior Product Designer · Framer — 2021 to Present</p>
+					<p>Led the redesign of the onboarding flow, lifting activation by 24% across web and mobile.</p>
+				</AccordionContent>
+			</AccordionItem>
+			<AccordionItem value="education">
+				<AccordionTrigger>Education</AccordionTrigger>
+				<AccordionContent>
+					<p>B.Des in Interaction Design · Rhode Island School of Design</p>
+				</AccordionContent>
+			</AccordionItem>
+			<AccordionItem value="skills">
+				<AccordionTrigger>Skills</AccordionTrigger>
+				<AccordionContent>
+					<p>Figma, prototyping, design systems, user research, and front-end handoff.</p>
+				</AccordionContent>
+			</AccordionItem>
+		</Accordion>
+	</div>
+);
+
+export const MultipleOpen = () => (
+	<div style={wrap}>
+		<Accordion openMultiple defaultValue={["summary", "certifications"]}>
+			<AccordionItem value="summary">
+				<AccordionTrigger>Professional Summary</AccordionTrigger>
+				<AccordionContent>
+					<p>Full-stack engineer with eight years shipping resilient TypeScript services and design systems.</p>
+				</AccordionContent>
+			</AccordionItem>
+			<AccordionItem value="certifications">
+				<AccordionTrigger>Certifications</AccordionTrigger>
+				<AccordionContent>
+					<p>AWS Solutions Architect · Professional</p>
+					<p>Certified Kubernetes Administrator</p>
+				</AccordionContent>
+			</AccordionItem>
+		</Accordion>
+	</div>
+);