Family board: add to shopping, tasks, checklists and the Family calendar; record who added each

- + button on each board card: write it, tap your name (PIN unless a child), it is added as you
- Tasks, events, checklist items and shopping items remember who added them
- Names shown on the board and in Tasks, Notes and Calendar
- Tests and README updated

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

cal.js

@@ -326,7 +326,7 @@ async function collectEvents(win) {
     const mine = dirFor(myId()), evs = eventsIn(mine);
     const add = (dir, evs, c, id, extra) => {
       const ics_ = ics.buildCalendar(evs.filter(e => evCal(e) === c.id).map(e => ({ uid: e.uid, fields: e.fields })));
-      for (const e of expand(parseEvents(ics_), win)) all.push({ ...e, cal: c.name, calId: id, color: over[id] || c.color || DEFAULT_COLOR, ...extra });
+      for (const e of expand(parseEvents(ics_), win)) all.push({ ...e, cal: c.name, calId: id, color: over[id] || c.color || DEFAULT_COLOR, by: (evs.find(x => x.uid === e.uid) || {}).byName || '', ...extra });
     };
     for (const c of calsIn(mine)) add(mine, evs, c, c.id, { editable: true });
     for (const sh of sharedWithMe()) add(dirFor(sh.owner), eventsIn(dirFor(sh.owner)), sh.cal, sh.id, { editable: sh.mode === 'edit', shared: true, owner: sh.ownerName });
@@ -436,7 +436,7 @@ async function handle(req, res) {
         ics.validate(b.fields);
         const all = eventsIn(r.dir), uid = b.uid || ics.newUid(), i = all.findIndex(x => x.uid === uid && evCal(x) === r.cid);
         const rec = { uid, cal: r.cid, fields: b.fields, updated: Date.now() };
-        if (i >= 0) all[i] = { ...all[i], ...rec }; else all.push({ ...rec, created: Date.now() });
+        if (i >= 0) all[i] = { ...all[i], ...rec }; else all.push({ ...rec, created: Date.now(), by: users.current().id, byName: users.current().name }); // (who added it)
         saveEvents(r.dir, all);
         return json(res, 200, { ok: true, uid });
       }
@@ -479,7 +479,7 @@ async function handle(req, res) {
 
 /** The Family calendar's events in a window, for the family board (no signed-in person needed). */
 function familyEvents(win) {
-  const ics_ = ics.buildCalendar(eventsIn(dirFor(FAM)).map(e => ({ uid: e.uid, fields: e.fields })));
-  return expand(parseEvents(ics_), win).map(e => ({ ...e, cal: 'Family', color: FAMCAL.color }));
+  const evs = eventsIn(dirFor(FAM)), ics_ = ics.buildCalendar(evs.map(e => ({ uid: e.uid, fields: e.fields })));
+  return expand(parseEvents(ics_), win).map(e => ({ ...e, cal: 'Family', color: FAMCAL.color, by: (evs.find(x => x.uid === e.uid) || {}).byName || '' }));
 }
 module.exports = { familyEvents, collectEvents, unfold, parseLine, parseDate, unesc, handle, feed, parseEvents, expand, zonedToUtc, assertPublic, localIcs };