'some' changes

app/subject/viewDetailsSubject.tsx

@@ -288,7 +288,7 @@ export default function ViewDetailsSubject() {
               <View className="mt-5">
                 <View className="mb-2 flex-row items-center justify-between">
                   <Text className="text-sm font-semibold text-text-secondary">
-                    Assignment Progress
+                    Assignments completed
                   </Text>
 
                   <Text className="text-sm font-bold text-text-main">
@@ -313,6 +313,10 @@ export default function ViewDetailsSubject() {
                         remainingAssignments === 1 ? '' : 's'
                       } remaining`}
                 </Text>
+
+                <Text className="mt-1 text-xs text-text-muted">
+                  Based only on completed assignments in this subject.
+                </Text>
               </View>
 
               <Text className="mt-4 text-sm text-text-muted">
@@ -451,7 +455,9 @@ export default function ViewDetailsSubject() {
                 {section.emptyMessage}
               </Text>
               <Text className="mt-1 text-center text-sm text-text-muted">
-                Assignments for this subject will show up here.
+                {assignments.length === 0
+                  ? 'Create the first assignment to give this subject a real study path.'
+                  : 'Assignments for this subject will show up here.'}
               </Text>
             </View>
           ) : (