Chores: claim from the pool; admin picks who appears on the family board

- "Anyone" chores get Take it / Put back; a claimed chore is that person's for the day
- Per-person "Show on the family board" switch controls board tiles and family chore progress
- Tests and README updated

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

public/family-view.js

@@ -25,7 +25,7 @@ async function fmEvents() {
 }
 async function fmChores() {
   const d = await crApi('/?date=' + crYmd(new Date())), b = fmBody('fmch'); if (!b) return; const me = d.me.id;
-  const per = d.people.map(p => { const l = d.board.filter(i => i.user === p.id), dn = l.filter(i => i.done).length; return { p, l, dn }; }).filter(x => x.l.length), any = d.board.filter(i => i.user === null);
+  const per = d.people.filter(p => p.board !== false).map(p => { const l = d.board.filter(i => i.user === p.id), dn = l.filter(i => i.done).length; return { p, l, dn }; }).filter(x => x.l.length), any = d.board.filter(i => i.user === null);
   const mine = d.board.filter(i => i.user === me || i.user === null).filter(i => !i.done);
   b.innerHTML = `${mine.length ? mine.slice(0, 5).map(i => `<label class="critem"><input type="checkbox" data-c="${esc(i.chore)}" data-u="${esc(i.user || '')}"><span class="grow"><b>${esc(i.title)}</b></span>${i.points ? `<em class="crpts">${i.points} pts</em>` : ''}</label>`).join('') : '<p class="empty" style="margin:6px 0">Nothing left for you today. 🎉</p>'}
     ${per.length ? `<div class="fmprog">${per.map(x => `<div class="fmpr"><span class="sgav" style="background:${sgColor(x.p.id)};width:26px;height:26px;font-size:12px">${esc(sgInitial(x.p.name))}</span><span class="grow"><small>${esc(x.p.name)} · ${x.dn} of ${x.l.length}</small><div class="crbar"><i style="width:${Math.round(x.dn / x.l.length * 100)}%"></i></div></span></div>`).join('')}</div>` : ''}${any.length ? `<small class="sub">${any.filter(i => !i.done).length} for anyone</small>` : ''}`;