diff --git a/db/queries.ts b/db/queries.ts
index 2658529..847b08a 100644
--- a/db/queries.ts
+++ b/db/queries.ts
@@ -21,42 +21,24 @@ import {
 
 // ─── Desktop-Only Filter ─────────────────────────────────────────────
 // Desktop-only = has at least one desktop platform tag but NO mobile tag.
-
-const DESKTOP_TAG_SLUGS = ["desktop", "linux", "macos", "windows"];
-const MOBILE_TAG_SLUGS = ["android", "ios"];
+// Single query with conditional aggregation instead of 4 nested subqueries.
 
 function desktopOnlyAppIds(db: DrizzleDB) {
-	const desktopTagIds = db
-		.select({ id: tags.id })
-		.from(tags)
-		.where(inArray(tags.slug, DESKTOP_TAG_SLUGS));
-
-	const mobileTagIds = db
-		.select({ id: tags.id })
-		.from(tags)
-		.where(inArray(tags.slug, MOBILE_TAG_SLUGS));
-
-	const appsWithDesktopTag = db
-		.select({ appId: appTags.appId })
-		.from(appTags)
-		.where(inArray(appTags.tagId, desktopTagIds));
-
-	const appsWithMobileTag = db
-		.select({ appId: appTags.appId })
-		.from(appTags)
-		.where(inArray(appTags.tagId, mobileTagIds));
-
-	// Apps that have a desktop tag but no mobile tag
 	return db
 		.select({ appId: appTags.appId })
 		.from(appTags)
+		.innerJoin(tags, eq(appTags.tagId, tags.id))
 		.where(
-			and(
-				inArray(appTags.appId, appsWithDesktopTag),
-				notInArray(appTags.appId, appsWithMobileTag),
+			or(
+				inArray(tags.slug, ["desktop", "linux", "macos", "windows"]),
+				inArray(tags.slug, ["android", "ios"]),
 			),
 		)
-		.groupBy(appTags.appId);
+		.groupBy(appTags.appId)
+		.having(
+			sql`sum(case when ${tags.slug} in ('desktop','linux','macos','windows') then 1 else 0 end) > 0
+			and sum(case when ${tags.slug} in ('android','ios') then 1 else 0 end) = 0`,
+		);
 }
 
 // ─── Types ──────────────────────────────────────────────────────────
@@ -376,7 +358,7 @@ export async function listDesktopApps(
 	const desktopTagIds = db
 		.select({ id: tags.id })
 		.from(tags)
-		.where(inArray(tags.slug, DESKTOP_TAG_SLUGS));
+		.where(inArray(tags.slug, ["desktop", "linux", "macos", "windows"]));
 
 	const appsWithDesktopTag = db
 		.select({ appId: appTags.appId })
diff --git a/package.json b/package.json
index a2a9632..4dd9408 100644
--- a/package.json
+++ b/package.json
@@ -17,8 +17,8 @@
 		"format": "biome format --write .",
 		"typecheck": "tsc --noEmit",
 		"seed:fetch": "tsx db/seed/fetch.ts",
-		"seed:import": "tsx db/seed/import.ts",
-		"seed:enrich": "tsx db/seed/enrich.ts",
+		"seed:import": "tsx db/seed/import.ts && pnpm cache:purge",
+		"seed:enrich": "tsx db/seed/enrich.ts && pnpm cache:purge",
 		"cache:purge": "tsx scripts/cache-purge.ts",
 		"seed:comparisons": "tsx db/seed/generate-comparisons.ts",
 		"seed:embeddings": "tsx db/seed/generate-embeddings.ts"
diff --git a/src/components/layout/site-header.tsx b/src/components/layout/site-header.tsx
index 5094b4f..094f444 100644
--- a/src/components/layout/site-header.tsx
+++ b/src/components/layout/site-header.tsx
@@ -64,11 +64,7 @@ function HeaderSearchForm() {
 	);
 }
 
-function MobileSearchBar({
-	onClose,
-}: {
-	onClose: () => void;
-}) {
+function MobileSearchBar({ onClose }: { onClose: () => void }) {
 	const navigate = useNavigate();
 	const [query, setQuery] = useState("");
 	const inputRef = useRef<HTMLInputElement>(null);
@@ -107,12 +103,7 @@ function MobileSearchBar({
 						className="h-9 w-full rounded-4xl border border-input bg-input/30 pl-9 pr-3 text-sm text-foreground transition-colors placeholder:text-muted-foreground focus:border-ring focus:ring-[3px] focus:ring-ring/50 focus:outline-none"
 					/>
 				</div>
-				<Button
-					type="button"
-					variant="ghost"
-					size="icon-sm"
-					onClick={onClose}
-				>
+				<Button type="button" variant="ghost" size="icon-sm" onClick={onClose}>
 					<HugeiconsIcon icon={Cancel01Icon} strokeWidth={2} />
 					<span className="sr-only">Close search</span>
 				</Button>
@@ -189,9 +180,7 @@ export function SiteHeader() {
 				</div>
 			</div>
 
-			{searchOpen && (
-				<MobileSearchBar onClose={() => setSearchOpen(false)} />
-			)}
+			{searchOpen && <MobileSearchBar onClose={() => setSearchOpen(false)} />}
 		</header>
 	);
 }
diff --git a/src/routes/-worker-entry.ts b/src/routes/-worker-entry.ts
index 621e631..a498d62 100644
--- a/src/routes/-worker-entry.ts
+++ b/src/routes/-worker-entry.ts
@@ -19,23 +19,27 @@ const SITE_URL = "https://unclouded.app";
 
 type CacheRule = { pattern: RegExp; header: string };
 
+// Data only changes on manual DB writes (seed/enrich), then cache:purge.
+// Cache everything aggressively — 1 week fresh, 1 week stale fallback.
+const ONE_WEEK = 604800;
+
 const cacheRules: CacheRule[] = [
 	{ pattern: /^\/search/, header: "no-store" },
 	{
 		pattern: /^\/sitemap.*\.xml$|^\/robots\.txt$/,
-		header: "public, s-maxage=86400",
+		header: `public, s-maxage=${ONE_WEEK}`,
 	},
 	{
 		pattern: /^\/compare\//,
-		header: "public, s-maxage=86400, stale-while-revalidate=604800",
+		header: `public, s-maxage=${ONE_WEEK}, stale-while-revalidate=${ONE_WEEK}`,
 	},
 	{
 		pattern: /^\/(apps|alternatives)\/[^/]+$|^\/(category|tags|license)\//,
-		header: "public, s-maxage=3600, stale-while-revalidate=86400",
+		header: `public, s-maxage=${ONE_WEEK}, stale-while-revalidate=${ONE_WEEK}`,
 	},
 	{
-		pattern: /^\/(apps|alternatives|discover)?$/,
-		header: "public, s-maxage=600, stale-while-revalidate=3600",
+		pattern: /^\/(apps|alternatives|discover|desktop)?$/,
+		header: `public, s-maxage=${ONE_WEEK}, stale-while-revalidate=${ONE_WEEK}`,
 	},
 ];
 
@@ -52,6 +56,7 @@ function robotsTxt(): Response {
 	const body = `User-agent: *
 Allow: /
 Disallow: /search
+Crawl-delay: 10
 
 Sitemap: ${SITE_URL}/sitemap.xml
 `;