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/ContextMenu.tsx

@@ -0,0 +1,48 @@
+import {
+	ContextMenu,
+	ContextMenuContent,
+	ContextMenuGroup,
+	ContextMenuItem,
+	ContextMenuLabel,
+	ContextMenuSeparator,
+	ContextMenuShortcut,
+	ContextMenuTrigger,
+} from "@reactive-resume/ui/components/context-menu";
+
+// Right-click menu — rendered open (defaultOpen) so the card shows the menu.
+// cfg.overrides.ContextMenu pins cardMode: single + viewport.
+export const Open = () => (
+	<div style={{ display: "flex", justifyContent: "center", padding: 24, paddingBottom: 160 }}>
+		<ContextMenu defaultOpen>
+			<ContextMenuTrigger>
+				<div
+					style={{
+						display: "grid",
+						placeItems: "center",
+						width: 240,
+						height: 96,
+						border: "1px dashed var(--border)",
+						borderRadius: 8,
+						color: "var(--muted-foreground)",
+						fontSize: 13,
+					}}
+				>
+					Right-click a resume card
+				</div>
+			</ContextMenuTrigger>
+			<ContextMenuContent>
+				<ContextMenuGroup>
+					<ContextMenuLabel>Software Engineer</ContextMenuLabel>
+					<ContextMenuItem>Open</ContextMenuItem>
+					<ContextMenuItem>
+						Rename
+						<ContextMenuShortcut>F2</ContextMenuShortcut>
+					</ContextMenuItem>
+					<ContextMenuItem>Duplicate</ContextMenuItem>
+				</ContextMenuGroup>
+				<ContextMenuSeparator />
+				<ContextMenuItem variant="destructive">Delete</ContextMenuItem>
+			</ContextMenuContent>
+		</ContextMenu>
+	</div>
+);