A timed task was drawn at a fixed half hour whatever its `duration_min` said, so a
length the data model already carried was invisible and uneditable. Three parts:
- The calendar draws a task at its real length — a quarter-hour floor so a
zero-minute task is still grabbable, the day's end as the ceiling — instead of a
flat thirty minutes. A ninety-minute task now looks like ninety minutes.
- A grip along the foot of a timed task drags its length. Pointer events, not the
HTML5 drag the body uses, and stopPropagation between them — otherwise making a
task longer would pick it up and move it instead. It snaps to the quarter hour,
follows the handle live, and writes once on release through a new store `resize`.
Moving a task (the existing day/time drag) leaves the length alone.
- The task drawer gains a length field beside the time — minutes, shown only with
a time to hang it on, since a duration without a start is a length of nothing and
the calendar has nowhere to draw it. So a length can be set off the calendar too.
e2e: dragging the foot of a task makes it longer both on screen and in what the
server stores, and the time does not move. Full Chromium suite green.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
