refactor : rename TaskType to TaskTag across the stack

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/components/time-tracking/TimeEntryList.vue

@@ -23,12 +23,12 @@
                         {{ entry.title || 'Sans titre' }}
                     </span>
                     <span
-                        v-for="type in entry.types"
-                        :key="type.id"
+                        v-for="tag in entry.tags"
+                        :key="tag.id"
                         class="shrink-0 rounded-full px-2 py-0.5 text-[10px] font-semibold text-white"
-                        :style="{ backgroundColor: type.color }"
+                        :style="{ backgroundColor: tag.color }"
                     >
-                        {{ type.label }}
+                        {{ tag.label }}
                     </span>
                 </div>
                 <div class="mt-0.5 flex items-center gap-2 text-xs text-neutral-500">