diff --git a/src/features/housekeeping/foundation/page/housekeeping-page-state.test.tsx b/src/features/housekeeping/foundation/page/housekeeping-page-state.test.tsx
index b835b231..cbb7cd48 100644
--- a/src/features/housekeeping/foundation/page/housekeeping-page-state.test.tsx
+++ b/src/features/housekeeping/foundation/page/housekeeping-page-state.test.tsx
@@ -40,7 +40,8 @@ describe("HousekeepingPageState", () => {
 		);
 
 		expect(loading).toContain('aria-live="polite"');
-		expect(partial).toContain('data-state-tone="warning"');
+		expect(partial).toContain("--admin-warning-border");
+		expect(partial).toContain("--admin-warning-subtle");
 		expect(partial).toContain(">Partial title<");
 	});
 
diff --git a/src/features/housekeeping/foundation/page/housekeeping-page-state.tsx b/src/features/housekeeping/foundation/page/housekeeping-page-state.tsx
index dc2e2a56..c980e45e 100644
--- a/src/features/housekeeping/foundation/page/housekeeping-page-state.tsx
+++ b/src/features/housekeeping/foundation/page/housekeeping-page-state.tsx
@@ -24,7 +24,7 @@ export function HousekeepingPageState({
 				isError
 					? "border-[var(--admin-error)] bg-[var(--admin-surface)]"
 					: isPartial
-						? "border-[var(--admin-warning)] bg-[var(--admin-surface)]"
+						? "border-[var(--admin-warning-border)] bg-[var(--admin-warning-subtle)]"
 						: "border-[var(--admin-border)] bg-[var(--admin-surface)]"
 			}`}
 		>
diff --git a/src/features/housekeeping/foundation/shell/housekeeping-shell.test.tsx b/src/features/housekeeping/foundation/shell/housekeeping-shell.test.tsx
index 394a4043..4277f531 100644
--- a/src/features/housekeeping/foundation/shell/housekeeping-shell.test.tsx
+++ b/src/features/housekeeping/foundation/shell/housekeeping-shell.test.tsx
@@ -67,14 +67,73 @@ const domains: readonly HousekeepingNavigationDomain[] = [
 	},
 ];
 
+const taskFiles = [
+	"src/features/housekeeping/foundation/shell/housekeeping-shell.tsx",
+	"src/features/housekeeping/foundation/shell/domain-rail.tsx",
+	"src/features/housekeeping/foundation/shell/context-nav.tsx",
+	"src/features/housekeeping/foundation/shell/command-trigger.tsx",
+	"src/features/housekeeping/foundation/shell/operator-summary.tsx",
+	"src/features/housekeeping/foundation/page/housekeeping-page-shell.tsx",
+	"src/features/housekeeping/foundation/page/housekeeping-page-state.tsx",
+	"src/features/housekeeping/foundation/shell/housekeeping-shell.test.tsx",
+	"src/features/housekeeping/foundation/page/housekeeping-page-state.test.tsx",
+] as const;
+
+const componentTaskFiles = taskFiles.slice(0, 7);
+
+const structuralBoundaryRules = [
+	{ label: "client directive", pattern: new RegExp("use " + "client") },
+	{
+		label: "palette color",
+		pattern:
+			/(?:bg|text|border|from|to)-(?:slate|gray|zinc|neutral|stone|red|orange|amber|yellow|lime|green|emerald|teal|cyan|sky|blue|indigo|violet|purple|fuchsia|pink|rose)-\d{2,3}/,
+	},
+	{ label: "hex color", pattern: new RegExp("#" + "[0-9a-fA-F]{3,8}") },
+	{
+		label: "rgb or hsl color",
+		pattern: new RegExp("(?:r" + "gb|h" + "sl)\\("),
+	},
+];
+
+const componentBoundaryRules = [
+	{
+		label: "React hook",
+		pattern:
+			/\buse(?:State|Effect|Memo|Callback|Ref|Reducer|LayoutEffect|Transition)(?:\s*\(|\s*(?:,|}))/,
+	},
+	{ label: "click handler", pattern: /\bonClick\s*=/ },
+	{ label: "keyboard handler", pattern: /\bonKey(?:Down|Up|Press)\s*=/ },
+	{ label: "event listener", pattern: new RegExp("addEvent" + "Listener") },
+	{
+		label: "database or action import",
+		pattern: new RegExp(
+			"(?:from\\s*|import\\s*\\()\\s*['\"][^'\"]*(?:@/lib/" +
+				"db|drizzle(?:-orm)?|/" +
+				"actions?)[^'\"]*['\"]",
+		),
+	},
+	{ label: "command package", pattern: new RegExp("cmd" + "k", "i") },
+	{ label: "localization import", pattern: new RegExp("next" + "-intl") },
+	{
+		label: "search or mutation runtime",
+		pattern: /\b(?:fetch|useQuery|useMutation)\s*\(/,
+	},
+	{
+		label: "persistence storage",
+		pattern:
+			/\b(?:localStorage|sessionStorage|indexedDB)\b|\.(?:setItem|getItem|removeItem)\s*\(/,
+	},
+];
+
 function renderShell(
 	activeDomainId: HousekeepingNavigationDomain["id"] = "operations",
+	availableDomains: readonly HousekeepingNavigationDomain[] = domains,
 ): string {
 	return renderToStaticMarkup(
 		<HousekeepingShell
 			actor={{ id: 7, username: "Nora", rank: 6 }}
 			activeDomainId={activeDomainId}
-			domains={domains}
+			domains={availableDomains}
 			labels={labels}
 		>
 			<p>Deck body</p>
@@ -82,10 +141,30 @@ function renderShell(
 	);
 }
 
+function anchors(html: string): readonly string[] {
+	return html.match(/<a\b[^>]*>/g) ?? [];
+}
+
+function anchorForHref(html: string, href: string): string {
+	const anchor = anchors(html).find((candidate) =>
+		candidate.includes(`href="${href}"`),
+	);
+	if (!anchor) throw new Error(`missing anchor for ${href}`);
+	return anchor;
+}
+
+function boundaryViolations(
+	source: string,
+	rules: readonly { label: string; pattern: RegExp }[],
+): readonly string[] {
+	return rules
+		.filter((rule) => rule.pattern.test(source))
+		.map((rule) => rule.label);
+}
+
 describe("HousekeepingShell", () => {
 	it("renders the accessible command deck landmarks and supplied shell content", () => {
 		const html = renderShell();
-
 		expect(html).toContain('href="#housekeeping-content"');
 		expect(html).toContain(">Skip to housekeeping content<");
 		expect(html).toContain("<aside");
@@ -94,9 +173,6 @@ describe("HousekeepingShell", () => {
 		expect(html).toContain('<nav aria-label="Operations navigation"');
 		expect(html).toContain('<main id="housekeeping-content"');
 		expect(html).toContain(">Deck body</p>");
-		expect(html).toMatch(
-			/<a(?=[^>]*href="\/admin-next\/operations")(?=[^>]*aria-current="page")/,
-		);
 		expect(html).toContain('href="/admin-next/operations/queue"');
 		expect(html).toContain(">Queue<");
 		expect(html).toContain(">Nora<");
@@ -109,66 +185,88 @@ describe("HousekeepingShell", () => {
 		);
 	});
 
-	it("maps every authorized domain icon and only marks the active domain", () => {
+	it("maps all six authorized icons and exactly one active domain", () => {
 		const html = renderShell("people");
-
-		for (const iconId of [
-			"inbox",
-			"users",
-			"file-text",
-			"gem",
-			"hotel",
-			"settings",
+		const allAnchors = anchors(html);
+		const activeAnchors = allAnchors.filter((anchor) =>
+			anchor.includes('aria-current="page"'),
+		);
+		const peopleAnchor = anchorForHref(html, "/admin-next/people");
+		for (const iconClass of [
+			"lucide-inbox",
+			"lucide-users",
+			"lucide-file-text",
+			"lucide-gem",
+			"lucide-hotel",
+			"lucide-settings",
 		]) {
-			expect(html).toContain(`data-domain-icon="${iconId}"`);
+			expect(html).toContain(`class="lucide ${iconClass}"`);
+		}
+		expect(activeAnchors).toHaveLength(1);
+		expect(peopleAnchor).toContain('aria-current="page"');
+		for (const anchor of allAnchors.filter(
+			(anchor) => anchor !== peopleAnchor,
+		)) {
+			expect(anchor).not.toContain('aria-current="page"');
 		}
-		expect(html).toMatch(
-			/<a(?=[^>]*href="\/admin-next\/people")(?=[^>]*aria-current="page")/,
-		);
-		expect(html).not.toContain(
-			'href="/admin-next/operations" aria-current="page"',
-		);
 	});
 
-	it("renders no contextual items when the active domain is absent", () => {
-		const html = renderShell("system");
-
+	it("does not throw or render contextual items when a valid active domain is absent", () => {
+		const domainsWithoutSystem = domains.filter(
+			(domain) => domain.id !== "system",
+		);
+		expect(() => renderShell("system", domainsWithoutSystem)).not.toThrow();
+		const html = renderShell("system", domainsWithoutSystem);
 		expect(html).not.toContain('href="/admin-next/operations/queue"');
 		expect(html).not.toContain(">Queue<");
 	});
 
 	it("keeps Task 10 modules within the server-rendered source boundary", () => {
-		const taskFiles = [
-			"src/features/housekeeping/foundation/shell/housekeeping-shell.tsx",
-			"src/features/housekeeping/foundation/shell/domain-rail.tsx",
-			"src/features/housekeeping/foundation/shell/context-nav.tsx",
-			"src/features/housekeeping/foundation/shell/command-trigger.tsx",
-			"src/features/housekeeping/foundation/shell/operator-summary.tsx",
-			"src/features/housekeeping/foundation/page/housekeeping-page-shell.tsx",
-			"src/features/housekeeping/foundation/page/housekeeping-page-state.tsx",
-			"src/features/housekeeping/foundation/shell/housekeeping-shell.test.tsx",
-			"src/features/housekeeping/foundation/page/housekeeping-page-state.test.tsx",
-		];
-		const prohibited = [
-			new RegExp("use " + "client"),
-			new RegExp("cmd" + "k", "i"),
-			new RegExp("addEvent" + "Listener"),
-			new RegExp(
-				"from\\s+['\"][^'\"]*(?:@/lib/" +
-					"db|drizzle|/" +
-					"actions)[^'\"]*['\"]",
-			),
-			new RegExp("next" + "-intl"),
-			/(?:bg|text|border|from|to)-(?:red|blue|green|yellow|orange|purple|pink|gray|slate|zinc|neutral)-\d{2,3}/,
-			new RegExp("#" + "[0-9a-fA-F]{3,8}"),
-			new RegExp("(?:r" + "gb|h" + "sl)\\("),
-		];
-
 		for (const path of taskFiles) {
 			const source = readFileSync(resolve(process.cwd(), path), "utf8");
-			for (const pattern of prohibited) {
-				expect(source).not.toMatch(pattern);
-			}
+			expect(boundaryViolations(source, structuralBoundaryRules)).toEqual([]);
+		}
+		for (const path of componentTaskFiles) {
+			const source = readFileSync(resolve(process.cwd(), path), "utf8");
+			expect(boundaryViolations(source, componentBoundaryRules)).toEqual([]);
 		}
 	});
+
+	it("detects representative prohibited source mutations", () => {
+		const componentMutations = [
+			["React hook", 'import { useState } from "react";'],
+			["click handler", "<button onClick={() => undefined} />"],
+			["keyboard handler", "<input onKeyDown={() => undefined} />"],
+			[
+				"event listener",
+				'window.addEventListener("keydown", () => undefined);',
+			],
+			["database or action import", 'import { db } from "@/lib/db";'],
+			["database or action import", 'await import("@/app/actions");'],
+			["command package", 'import { Command } from "cmdk";'],
+			["localization import", 'import { useTranslations } from "next-intl";'],
+			["search or mutation runtime", "useMutation();"],
+			["persistence storage", "localStorage.setItem('key', 'value');"],
+		] as const;
+		for (const [expectedViolation, source] of componentMutations) {
+			expect(boundaryViolations(source, componentBoundaryRules)).toContain(
+				expectedViolation,
+			);
+		}
+		expect(
+			boundaryViolations(
+				'const color = "bg-' + 'rose-500";',
+				structuralBoundaryRules,
+			),
+		).toContain("palette color");
+		expect(
+			boundaryViolations('const color = "#' + 'abc";', structuralBoundaryRules),
+		).toContain("hex color");
+		expect(
+			boundaryViolations(
+				'const color = "r' + 'gb(1, 2, 3)";',
+				structuralBoundaryRules,
+			),
+		).toContain("rgb or hsl color");
+	});
 });