feat(ui) : improve time-tracking UX, responsive tags, and task priority flag

- Add duplicate button in time entry drawer
- Make time entry blocks and list responsive (tags wrap, hide on narrow)
- Replace date filter input with calendar icon next to month title
- Fix scroll to current hour in calendar (use gridBodyEl)
- Show project color on ticket code in task cards and my-tasks
- Add red flag icon for high priority tasks in kanban and my-tasks

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/components/time-tracking/TimeTrackingCalendar.vue

@@ -201,14 +201,11 @@ function getScrollParent(): HTMLElement | null {
 // Scroll to current hour on mount
 onMounted(() => {
     nextTick(() => {
-        if (!calendarEl.value) return
-        const scrollParent = getScrollParent()
-        if (!scrollParent) return
+        if (!gridBodyEl.value) return
         const now = new Date()
         const currentMinutes = now.getHours() * 60 + now.getMinutes()
-        const calendarTop = calendarEl.value.offsetTop
-        const scrollTarget = calendarTop + (currentMinutes / 60) * hourHeight - scrollParent.clientHeight / 3
-        scrollParent.scrollTop = Math.max(0, scrollTarget)
+        const scrollTarget = (currentMinutes / 60) * hourHeight - gridBodyEl.value.clientHeight / 3
+        gridBodyEl.value.scrollTop = Math.max(0, scrollTarget)
     })
 })