Refactor duration handling and enhance chore management features

- Replace hardcoded time units with TIME_UNITS constant in NotificationTemplate.
- Introduce DurationInput component for reusable duration selection in ChoreEdit and AddTaskModal.
- Update chore queries to refetch on window focus.
- Adjust completion window logic in ChoreView and HistoryCard for better deadline handling.
- Implement smart insights filter restoration in MyChores.
- Add MyChoreHeader component for improved filter display.
- Enhance activity notes display with truncation and modal view in ActivitiesCard.

src/components/common/DurationInput.jsx

@@ -0,0 +1,104 @@
+import { Add, Remove } from '@mui/icons-material'
+import { Box, IconButton, Input, Option, Select } from '@mui/joy'
+import { useEffect, useState } from 'react'
+import {
+  secondsToValueAndUnit,
+  TIME_UNITS,
+  valueAndUnitToSeconds,
+} from '../../utils/DurationUtils'
+
+/**
+ * A reusable duration picker: [−] number [+] unit-select
+ *
+ * Props:
+ *   value    – duration in seconds (positive integer)
+ *   onChange – called with new duration in seconds
+ *   size     – Joy UI size ('sm' | 'md')
+ *   minValue – minimum numeric value (default 1)
+ */
+const DurationInput = ({ value, onChange, size = 'md', minValue = 1 }) => {
+  const derived =
+    value != null && value >= 0
+      ? secondsToValueAndUnit(value)
+      : { value: 1, unit: 'h' }
+  const [displayValue, setDisplayValue] = useState(derived.value)
+  const [unit, setUnit] = useState(derived.unit)
+
+  useEffect(() => {
+    if (value != null && value >= 0) {
+      const { value: v, unit: u } = secondsToValueAndUnit(value)
+      setDisplayValue(v)
+      setUnit(u)
+    }
+  }, [value])
+
+  const emit = (v, u) => {
+    onChange(valueAndUnitToSeconds(v, u))
+  }
+
+  const handleDecrement = () => {
+    const next = Math.max(minValue, displayValue - 1)
+    setDisplayValue(next)
+    emit(next, unit)
+  }
+
+  const handleIncrement = () => {
+    const next = displayValue + 1
+    setDisplayValue(next)
+    emit(next, unit)
+  }
+
+  return (
+    <Box sx={{ display: 'flex', gap: 0.5, alignItems: 'center' }}>
+      <IconButton
+        size={size}
+        variant='outlined'
+        color='neutral'
+        onClick={handleDecrement}
+        disabled={displayValue <= minValue}
+      >
+        <Remove fontSize='small' />
+      </IconButton>
+
+      <Input
+        type='number'
+        value={displayValue}
+        size={size}
+        slotProps={{ input: { min: minValue } }}
+        sx={{ maxWidth: 70, textAlign: 'center' }}
+        onChange={e => {
+          const v = Math.max(minValue, parseInt(e.target.value) || minValue)
+          setDisplayValue(v)
+          emit(v, unit)
+        }}
+      />
+
+      <IconButton
+        size={size}
+        variant='outlined'
+        color='neutral'
+        onClick={handleIncrement}
+      >
+        <Add fontSize='small' />
+      </IconButton>
+
+      <Select
+        value={unit}
+        size={size}
+        sx={{ minWidth: 90, ml: 0.5 }}
+        onChange={(_, newUnit) => {
+          setUnit(newUnit)
+          emit(displayValue, newUnit)
+        }}
+      >
+        {TIME_UNITS.map(u => (
+          <Option key={u.value} value={u.value}>
+            {u.label}
+          </Option>
+        ))}
+      </Select>
+    </Box>
+  )
+}
+
+export default DurationInput