fix(planner): bump front face font sizes

name: 15→17px, meta: 10→12px, tags: 8→10px,
day-abbr: 9→11px, day-num: 10→12px

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/lib/planner/DesktopDayTile.svelte

@@ -295,7 +295,7 @@
 		z-index: 2;
 	}
 	.tile-day-abbr {
-		font-size: 9px;
+		font-size: 11px;
 		text-transform: uppercase;
 		letter-spacing: .06em;
 		color: rgba(255,255,255,.85);
@@ -307,7 +307,7 @@
 		display: flex;
 		align-items: center;
 		justify-content: center;
-		font-size: 10px;
+		font-size: 12px;
 		font-weight: 500;
 		color: rgba(255,255,255,.9);
 		background: rgba(255,255,255,.22);
@@ -327,7 +327,7 @@
 		z-index: 2;
 	}
 	.tile-name {
-		font-size: 15px;
+		font-size: 17px;
 		font-weight: 300;
 		color: #fff;
 		line-height: 1.3;
@@ -335,7 +335,7 @@
 		text-shadow: 0 1px 3px rgba(0,0,0,.4);
 	}
 	.tile-meta {
-		font-size: 10px;
+		font-size: 12px;
 		color: rgba(255,255,255,.75);
 		margin: 2px 0 0;
 	}
@@ -346,7 +346,7 @@
 		margin-top: 5px;
 	}
 	.tile-tag {
-		font-size: 8px;
+		font-size: 10px;
 		font-weight: 500;
 		padding: 2px 5px;
 		border-radius: 2px;