Cmd/Ctrl+Z did nothing in normal use. The handler bailed out whenever the
event target was an input, which was meant to protect the field's own text
undo. But the add-task input is where focus usually sits: you click it to
add a task and stay there, and on macOS clicking a button doesn't move
focus. So the guard killed undo in the one situation it exists for, right
after deleting something.
It now defers to the field only when the field actually holds text. An
empty input has nothing to restore.
The decision moves to src/lib/shortcuts.js as a pure function, because the
inline version couldn't be tested. Shift+Cmd+Z means redo and no longer
triggers an undo.
Task operations become pure functions over arrays.
Ids move from Date.now() to crypto.randomUUID(), with a fallback for
non-secure contexts, since people do self-host this over plain HTTP on a
LAN.
Undo gets its own module so tasks.js stays pure. It covers single deletes
and clear-completed batches, and clamps indices because the list can
change between recording an entry and undoing it.
Replaces checkAndMigrateTasks, which never ran. Its guard compared
currentDate, set from new Date() at init, against a fresh new Date() a few
milliseconds later in onMount, so it was never true. Unfinished tasks have
been sitting under old date keys ever since.
The rule now: unfinished tasks from every prior day move into today,
oldest first, ahead of whatever is already there. Completed ones are
dropped and the old key deleted. It spans gaps, which the original never
did even in theory, since it only looked one day back.
now is a parameter. That's the part that makes the boundary testable.
A factory over an injectable backend, so persistence can be tested without
a DOM.
Fixes the unguarded JSON.parse that would white-screen the app on one bad
value, and falls back to memory when localStorage itself throws (Safari
private mode, full quota).
migrateLegacyKeys converts old "Sat Aug 15 2026" keys in place. It's
idempotent, and it leaves anything it can't parse alone rather than
deleting it.
Switches task keys to ISO YYYY-MM-DD. They sort, so finding every day
before today is a string compare instead of re-parsing each key.
Two things worth knowing. fromKey builds from date parts rather than
parsing a bare ISO string, which gets read as UTC and lands on the wrong
day west of Greenwich. addDays goes through setDate, so it stays on the
same calendar day across a DST change instead of adding a flat 24 hours.
Aculix Technologies