diff --git a/lib/scheduler_core.dart b/lib/scheduler_core.dart
index f00abc7..301550e 100644
--- a/lib/scheduler_core.dart
+++ b/lib/scheduler_core.dart
@@ -1,7 +1,6 @@
-/// Public exports for the ADHD scheduling core.
-///
-/// Keep this file small. Implementation details belong in `lib/src/`.
-library adhd_scheduler_core;
+// Public exports for the ADHD scheduling core.
+//
+// Keep this file small. Implementation details belong in `lib/src/`.
 
 export 'src/models.dart';
 export 'src/scheduling_engine.dart';
diff --git a/lib/src/models.dart b/lib/src/models.dart
index 22f5a57..d168ae9 100644
--- a/lib/src/models.dart
+++ b/lib/src/models.dart
@@ -181,7 +181,8 @@ class Task {
   final TaskStatistics stats;
 
   bool get isFlexible => type == TaskType.flexible;
-  bool get isRequiredVisible => type == TaskType.critical || type == TaskType.inflexible;
+  bool get isRequiredVisible =>
+      type == TaskType.critical || type == TaskType.inflexible;
   bool get isLocked => type == TaskType.locked;
   bool get isBacklog => status == TaskStatus.backlog;
 
@@ -213,7 +214,8 @@ class Task {
       reward: reward ?? this.reward,
       difficulty: difficulty ?? this.difficulty,
       durationMinutes: durationMinutes ?? this.durationMinutes,
-      scheduledStart: clearSchedule ? null : (scheduledStart ?? this.scheduledStart),
+      scheduledStart:
+          clearSchedule ? null : (scheduledStart ?? this.scheduledStart),
       scheduledEnd: clearSchedule ? null : (scheduledEnd ?? this.scheduledEnd),
       parentTaskId: parentTaskId ?? this.parentTaskId,
       createdAt: createdAt ?? this.createdAt,
@@ -286,7 +288,7 @@ class TimeInterval {
     required this.start,
     required this.end,
     this.label,
-  }) : assert(!end.isBefore(start), 'end must not be before start');
+  });
 
   final DateTime start;
   final DateTime end;
diff --git a/lib/src/scheduling_engine.dart b/lib/src/scheduling_engine.dart
index 62e948b..8b399a4 100644
--- a/lib/src/scheduling_engine.dart
+++ b/lib/src/scheduling_engine.dart
@@ -23,7 +23,7 @@ class SchedulingWindow {
   const SchedulingWindow({
     required this.start,
     required this.end,
-  }) : assert(!end.isBefore(start), 'end must not be before start');
+  });
 
   final DateTime start;
   final DateTime end;
@@ -63,7 +63,9 @@ class SchedulingInput {
   }
 
   List<Task> get requiredVisibleTasks {
-    return tasks.where((task) => task.isRequiredVisible).toList(growable: false);
+    return tasks
+        .where((task) => task.isRequiredVisible)
+        .toList(growable: false);
   }
 
   List<TimeInterval> get flexibleIntervals {
@@ -312,7 +314,8 @@ class SchedulingEngine {
     required Duration duration,
     required List<TimeInterval> blocked,
   }) {
-    final sortedBlocked = [...blocked]..sort((a, b) => a.start.compareTo(b.start));
+    final sortedBlocked = [...blocked]
+      ..sort((a, b) => a.start.compareTo(b.start));
     var cursor = windowStart;
 
     for (final interval in sortedBlocked) {
@@ -327,7 +330,8 @@ class SchedulingEngine {
     }
 
     final candidateEnd = cursor.add(duration);
-    if (candidateEnd.isBefore(windowEnd) || candidateEnd.isAtSameMomentAs(windowEnd)) {
+    if (candidateEnd.isBefore(windowEnd) ||
+        candidateEnd.isAtSameMomentAs(windowEnd)) {
       return TimeInterval(start: cursor, end: candidateEnd);
     }
 
@@ -420,8 +424,7 @@ _BacklogInsertionPlan? _planBacklogInsertion({
     }
 
     final startsBeforeWindow = interval.start.isBefore(input.window.start);
-    final startsAfterWindow =
-        interval.start.isAfter(input.window.end) ||
+    final startsAfterWindow = interval.start.isAfter(input.window.end) ||
         interval.start.isAtSameMomentAs(input.window.end);
 
     if (startsBeforeWindow || startsAfterWindow) {