fix: update footer icon and improve bio for clarity

Author: amolgorithm

src/components/Footer.tsx

@@ -47,7 +47,7 @@ export function Footer() {
           <div className="lg:col-span-2 space-y-4">
             <div className="flex items-center space-x-2">
               <div className="w-10 h-10 rounded-lg bg-gradient-to-br from-orange-400 to-orange-600 flex items-center justify-center">
-                <span className="text-white font-bold text-lg">Φ</span>
+                <span className="text-white font-bold text-lg">ω</span>
               </div>
               <span className="text-xl font-semibold">Roots of Unity</span>
             </div>

src/components/Team.tsx

@@ -28,7 +28,7 @@ export function Team() {
       name: "Michael Shi",
       role: "Lead Problem Setter / Marker",
       grade: "Grade 11",
-      bio: "My name is Michael Shi, and I oversee all math coaching sessions and curriculum. I’m passionate about contest mathematics and Track and Field, and I enjoy problem-solving under the lens of challenging math problems. Accomplishments include: CEMC Euclid Group V Honor Roll, CIMC Group III Honor Roll, Fermat Group II Honor Roll.",
+      bio: "My name is Michael Shi, and I oversee all problem-setting and marking activities. I’m passionate about contest mathematics and Track and Field, and I enjoy problem-solving under the lens of challenging math problems. Accomplishments include: CEMC Euclid Group V Honor Roll, CIMC Group III Honor Roll, Fermat Group II Honor Roll.",
       image: michaelImage,
       social: {
         github: "https://github.com/cheappotatox",