fix: byte formatting + exactOptionalPropertyTypes

fmtBytes used 1<<40 — a 32-bit shift in JS evaluates to 1<<8=256, so every
value >=256 bytes rendered as TB. Also drop undefined-valued props that
exactOptionalPropertyTypes rejects in incident/status-page bodies.

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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

.gitignore

@@ -23,3 +23,4 @@ coverage/
 
 # local tooling artifacts
 .playwright-mcp/
+.playwright-cli/

apps/frontend/src/pages/IncidentsPage.tsx

@@ -54,7 +54,9 @@ export function IncidentsPage() {
 		// The select only offers the three severities, but its value is a
 		// plain string — narrow at the boundary instead of asserting.
 		const severity = sev === "critical" || sev === "minor" ? sev : "major";
-		await api.POST("/api/incidents", { body: { title: title.trim(), severity, message: msg || undefined } });
+		await api.POST("/api/incidents", {
+			body: { title: title.trim(), severity, ...(msg.trim() ? { message: msg.trim() } : {}) },
+		});
 		setBusy(false);
 		setDlgOpen(false);
 		setTitle(""); setMsg("");
@@ -63,7 +65,10 @@ export function IncidentsPage() {
 
 	async function transition(id: string | undefined, to: Status, message?: string) {
 		if (!id) return;
-		await api.PATCH("/api/incidents/{id}", { params: { path: { id } }, body: { status: to, message } });
+		await api.PATCH("/api/incidents/{id}", {
+			params: { path: { id } },
+			body: { status: to, ...(message?.trim() ? { message } : {}) },
+		});
 		await load();
 	}
 

apps/frontend/src/pages/StatusPagesPage.tsx

@@ -57,7 +57,7 @@ export function StatusPagesPage() {
 		const { error } = await api.POST("/api/status-pages", {
 			body: {
 				title: pTitle.trim(),
-				slug: pSlug.trim() || undefined,
+				...(pSlug.trim() ? { slug: pSlug.trim() } : {}),
 				description: pDesc.trim(),
 				monitorIds: pMonitors,
 			},

apps/frontend/src/pages/SystemsPage.tsx

@@ -11,10 +11,14 @@ import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { cn } from "@/lib/utils";
 
+const TB = 2 ** 40;
+const GB = 2 ** 30;
+const MB = 2 ** 20;
+
 export function fmtBytes(b: number) {
-	if (b >= 1 << 40) return `${(b / (1 << 40)).toFixed(1)} TB`;
+	if (b >= TB) return `${(b / TB).toFixed(1)} TB`;
-	if (b >= 1 << 30) return `${(b / (1 << 30)).toFixed(1)} GB`;
+	if (b >= GB) return `${(b / GB).toFixed(1)} GB`;
-	return `${(b / (1 << 20)).toFixed(0)} MB`;
+	return `${(b / MB).toFixed(0)} MB`;
 }
 
 export function fmtUptime(s: number) {