ci: enforce flutter/biome format checks and fix front lint violations

devfront/src/features/clients/ClientsPage.tsx

@@ -208,11 +208,7 @@ function ClientsPage() {
                   <div className="mt-1 flex items-baseline gap-2">
                     <span className="text-3xl font-bold">{item.value}</span>
                     <Badge
-                      variant={
-                        item.tone === "up"
-                          ? "success"
-                          : "muted"
-                      }
+                      variant={item.tone === "up" ? "success" : "muted"}
                       className={cn(
                         "px-2",
                         item.tone === "stable" && "bg-muted/40 text-foreground",