feat: add new pages for course discovery, course details, classroom activities, user dashboard, password reset, and internationalization support.

Frontend-Learner/pages/dashboard/my-courses.vue

@@ -120,6 +120,12 @@ const downloadCertificate = async (course: any) => {
       downloadingCourseId.value = null
   }
 }
+
+const validCourseId = computed(() => {
+    const cid = route.query.course_id
+    if (!cid || cid === 'undefined' || cid === 'null' || cid === 'NaN') return null
+    return cid
+})
 </script>
 
 <template>
@@ -195,14 +201,25 @@ const downloadCertificate = async (course: any) => {
         <p class="text-slate-500 dark:text-slate-400 mb-8">{{ $t('enrollment.successDesc') }}</p>
         <div class="flex flex-col gap-3">
           <q-btn
-            :to="`/classroom/learning?course_id=${route.query.course_id}`"
+            v-if="validCourseId"
+            :to="`/classroom/learning?course_id=${validCourseId}`"
             unelevated
             rounded
             color="primary"
             class="w-full py-3 text-lg font-bold shadow-lg"
             :label="$t('enrollment.startNow')"
+          />
+           <q-btn
+            v-else
+            unelevated
+            rounded
+            color="primary"
+            class="w-full py-3 text-lg font-bold shadow-lg"
+            :label="$t('common.close')" 
+            @click="showEnrollModal = false"
           />
           <q-btn
+            v-if="validCourseId"
             flat
             rounded
             color="grey-7"

Frontend-Learner/pages/dashboard/profile.vue

@@ -380,16 +380,7 @@ onMounted(() => {
                <div>
                   <div class="flex justify-between items-end mb-1">
                     <label class="text-xs font-bold text-slate-500 dark:text-slate-400 ml-1 uppercase">{{ $t('profile.email') }}</label>
-                    <q-btn
-                      flat dense
-                      color="primary"
-                      size="sm"
-                      no-caps
-                      icon="mark_email_read"
-                      :label="$t('profile.verifyEmail') || 'ยืนยันอีเมล'"
-                      @click="handleSendVerifyEmail"
-                      :loading="isSendingVerify"
-                    />
+
                   </div>
                   <q-input
                     v-model="userData.email"