fix: strike through completed habits

frontend/src/style.css

@@ -19,7 +19,7 @@ main{min-width:0;padding:27px 34px 50px;overflow:auto;background:linear-gradient
 .habit-main{flex:1;min-width:0;display:flex;align-items:center;justify-content:space-between;gap:10px;border:0;background:transparent;padding:13px 4px;text-align:left;border-radius:10px}
 .habit-name{font-size:15px;font-weight:700;color:#3c372f;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
 .habit-main>span:first-child{display:grid;gap:3px}.habit-main small{font-size:11px;color:var(--muted)}
-.habit-row.done .habit-name{color:var(--accent)}
+.habit-row.done .habit-name{color:var(--accent);text-decoration:line-through;text-decoration-thickness:1.5px;text-decoration-color:#b99a89}
 .habit-row .icon.ghost{color:#b3a795;margin-left:4px}
 .habit-row .icon.ghost:hover{color:var(--danger)}
 .numeric-habit>span:first-child{display:grid;gap:3px}.numeric-habit small{font-size:11px;color:var(--muted)}