refactor(task-modals): updated timeblocks to new local dat format

app/src/plugins/tm@modal/task/z-task-modal.vue

@@ -248,7 +248,7 @@
               :on-input-focus="onInputFocus"
               :on-date-open="onDateOpen"
             />
-            <div class="end-button w-100">
+            <div class="end-button w-100" v-if="!subtask.id">
               <button @click="addTimeblock">Pridať časový blok</button>
             </div>
           </div>
@@ -466,10 +466,36 @@ export default {
 
       data.deadline = splittedDeadline[0];
       data._deadline_time = splittedDeadline[1];
+
+      // Convert BE format timeblocks to internal format
+      const convertedTimeblocks = [];
+      if (data.timeblocks && data.timeblocks.length > 0) {
+        data.timeblocks.forEach((timeblock) => {
+          // If already in internal format, keep as is
+          if (timeblock.date) {
+            convertedTimeblocks.push(timeblock);
+            return;
+          }
+
+          // Convert from BE format to internal format
+          if (timeblock.start && timeblock.end) {
+            const startMoment = moment(timeblock.start, 'YYYY-MM-DD HH:mm:ss');
+            const endMoment = moment(timeblock.end, 'YYYY-MM-DD HH:mm:ss');
+            convertedTimeblocks.push({
+              id: timeblock.id || null,
+              date: startMoment.toDate(),
+              starts_at_time: startMoment.format('HH:mm'),
+              ends_at_time: endMoment.format('HH:mm'),
+              is_finished: timeblock.is_finished || 0,
+            });
+          }
+        });
+      }
+      data.timeblocks = convertedTimeblocks;
+
       this.subtask = this._enrichTask(data);
 
       // TODO: Remove? riesil som neodstranovanie jedineho zanamu v trvani a odpracovanom case
-      console.log('2', this.subtask);
       this.$forceUpdate();
     });