chore: clean up code formatting and remove unnecessary whitespace across multiple files for improved readability

src/components/layout/Header.tsx

@@ -112,11 +112,7 @@ export function Header() {
                 onClick={() => setMenuOpen(!menuOpen)}
                 className="flex h-9 items-center gap-2 rounded-lg border border-border bg-card pl-1.5 pr-3 transition-colors hover:bg-card-hover"
               >
-                <Avatar
-                  email={session.user.email!}
-                  name={session.user.name}
-                  size={24}
-                />
+                <Avatar email={session.user.email!} name={session.user.name} size={24} />
                 <span className="text-sm font-medium text-foreground">
                   {session.user.name || session.user.email?.split('@')[0]}
                 </span>
@@ -137,10 +133,7 @@ export function Header() {
 
               {menuOpen && (
                 <>
-                  <div
-                    className="fixed inset-0 z-10"
-                    onClick={() => setMenuOpen(false)}
-                  />
+                  <div className="fixed inset-0 z-10" onClick={() => setMenuOpen(false)} />
                   <div className="absolute right-0 z-20 mt-2 w-48 rounded-lg border border-border bg-card py-1 shadow-lg">
                     <div className="border-b border-border px-4 py-2">
                       <p className="text-xs text-muted">Connecté en tant que</p>