Improve daily check-in navigation and save recovery

app/globals.css

@@ -170,9 +170,11 @@ h1{letter-spacing:-.04em;font-size:clamp(2rem,4vw,2.85rem)}
 .round{transition:.16s transform,.16s background}.round:hover:not(:disabled){transform:scale(1.06);background:#eaf2ff}
 .body{padding:28px}
 .task{border-color:#e0e8f5;border-radius:16px;padding:16px;transition:.16s transform,.16s border-color,.16s background}
+.task-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:13px;color:#64748b;font-size:.84rem}.today-button{border:1px solid #bfd3fb;background:#f7faff;color:#1d4ed8;border-radius:999px;padding:7px 11px;font:inherit;font-weight:700;cursor:pointer;transition:.16s background,.16s transform}.today-button:hover{background:#e7f0ff;transform:translateY(-1px)}
 .task:hover{transform:translateX(2px);border-color:#94bafc}.task.done{background:#f2f7ff}
 .task b{background:#e7efff;color:#315fd5}.task.done b{background:#cfe0ff}
 .review{margin-top:26px}.review textarea{background:#fbfdff;border-color:#d5e0f0}.pill{transition:.15s transform}.pill:hover:not(:disabled){transform:translateY(-1px)}
 aside{display:grid;gap:14px}.side-calendar{margin:0;padding:18px;border-radius:22px;border-color:#d9e6ff;box-shadow:0 16px 36px #bfd5fb77}.calendar-head{gap:10px}.calendar-head h2{font-size:1.22rem;letter-spacing:-.02em}.month-tabs{gap:3px}.month-tabs button{padding:6px 8px;font-size:.76rem;min-width:36px}.weekdays{margin:16px 0 7px;font-size:.7rem;gap:4px}.calendar-grid{gap:4px}.calendar-day{min-height:47px;padding:5px 4px;border-radius:10px;font-size:.8rem}.calendar-day small{font-size:.56rem;line-height:1.1}.calendar-day.chosen{outline-width:2px}.calendar-note{font-size:.7rem;line-height:1.9}.calendar-note i{width:7px;height:7px;margin:0 3px 0 8px}.dark,.side{margin:0;border-radius:20px}.dark{padding:22px;background:linear-gradient(145deg,#102555,#1d4ed8)}.dark h2{font-size:1.45rem;letter-spacing:-.025em}.side{padding:18px;border-color:#d9e6ff;box-shadow:0 10px 25px #dbeafe66}.side p{margin:12px 0;font-size:.8rem}
 @media(max-width:980px){.layout{grid-template-columns:minmax(0,1fr) 300px}.calendar-day{min-height:43px}.calendar-day small{font-size:.51rem}.month-tabs button{padding:5px 6px;min-width:31px}}
 @media(max-width:760px){.shell{padding:26px 15px 42px}.layout{grid-template-columns:1fr}.side-calendar{order:-1}.calendar-day{min-height:55px;padding:6px}.calendar-day small{font-size:.6rem}.month-tabs button{padding:6px 10px;min-width:38px}}
+@media(max-width:420px){.task-toolbar{align-items:flex-start;flex-direction:column}.today-button{width:100%}}