playoff visual fixes

internal/view/seasonsview/finals_setup_form.templ

@@ -21,6 +21,16 @@ templ FinalsSetupForm(
 		} else if len(leaderboard) >= 5 && len(leaderboard) <= 6 {
 			defaultFormat = string(db.PlayoffFormat5to6)
 		}
+
+		// Prefill dates from existing season values
+		endDateDefault := ""
+		if !season.EndDate.IsZero() {
+			endDateDefault = season.EndDate.Time.Format("02/01/2006")
+		}
+		finalsStartDefault := ""
+		if !season.FinalsStartDate.IsZero() {
+			finalsStartDefault = season.FinalsStartDate.Time.Format("02/01/2006")
+		}
 	}}
 	<div class="max-w-3xl mx-auto">
 		<div
@@ -44,28 +54,30 @@ templ FinalsSetupForm(
 			>
 				<!-- Date Fields -->
 				<div class="grid grid-cols-1 md:grid-cols-2 gap-6">
-					<div>
-						@datepicker.DatePicker(
-							"regular_season_end_date",
-							"regular_season_end_date",
-							"Regular Season End Date",
-							"DD/MM/YYYY",
-							true,
-							"",
-						)
-						<p class="text-xs text-subtext0 mt-1">Games after this date will be forfeited</p>
-					</div>
-					<div>
-						@datepicker.DatePicker(
-							"finals_start_date",
-							"finals_start_date",
-							"Finals Start Date",
-							"DD/MM/YYYY",
-							true,
-							"",
-						)
-						<p class="text-xs text-subtext0 mt-1">First playoff matches begin on this date</p>
-					</div>
+				<div>
+					@datepicker.DatePickerWithDefault(
+						"regular_season_end_date",
+						"regular_season_end_date",
+						"Regular Season End Date",
+						"DD/MM/YYYY",
+						true,
+						"",
+						endDateDefault,
+					)
+					<p class="text-xs text-subtext0 mt-1">Last day of the regular season (inclusive)</p>
+				</div>
+				<div>
+					@datepicker.DatePickerWithDefault(
+						"finals_start_date",
+						"finals_start_date",
+						"Finals Start Date",
+						"DD/MM/YYYY",
+						true,
+						"",
+						finalsStartDefault,
+					)
+					<p class="text-xs text-subtext0 mt-1">First playoff matches begin on this date</p>
+				</div>
 				</div>
 				<!-- Format Selection -->
 				<div>