Finish Godot campaign polish

TASKS.md

@@ -180,10 +180,10 @@ This backlog tracks what must change so the implementation matches `docs/design.
 
 ## P2 Polish And Release Tasks
 
-- [ ] Add concise pulse-result feedback for major outcomes: isolated leak, restored pressure, downstream starvation, reactor ready, wet-electric risk, and terminal heat danger.
+- [x] Add concise pulse-result feedback for major outcomes: isolated leak, restored pressure, downstream starvation, reactor ready, wet-electric risk, and terminal heat danger.
-- [ ] Add campaign completion flow for the final Group 6 level.
+- [x] Add campaign completion flow for the final Group 6 level.
-- [ ] Add loading and malformed-level error states for campaign level loading.
+- [x] Add loading and malformed-level error states for campaign level loading.
-- [ ] Revisit art labels/icons for `Water`, `Unsafe`, powered props, and sprinkler controls after mechanics are implemented.
+- [x] Revisit art labels/icons for `Water`, `Unsafe`, powered props, and sprinkler controls after mechanics are implemented.
 
 ## Verification Rules
 

src/ReactorMaintenance.Godot/Data/GameSession.cs

@@ -41,6 +41,7 @@ public sealed class GameSession
         var trace = m_Engine.InteractPropWithPulseTrace(LevelState);
         LevelState = trace.FinalState;
         LastPulseSteps = trace.Steps;
+        LastPulseFeedback = CreatePulseFeedback(LevelState);
         if (LevelState.Global.Pulse == pulse)
         {
             LevelStateChanged?.Invoke(this);
@@ -60,6 +61,7 @@ public sealed class GameSession
         var trace = m_Engine.InteractLeakWithPulseTrace(LevelState, carrier, useRemedy);
         LevelState = trace.FinalState;
         LastPulseSteps = trace.Steps;
+        LastPulseFeedback = CreatePulseFeedback(LevelState);
         if (LevelState.Global.Pulse == pulse)
         {
             LevelStateChanged?.Invoke(this);
@@ -79,6 +81,7 @@ public sealed class GameSession
         var trace = m_Engine.ApplyHeatShieldWithPulseTrace(LevelState);
         LevelState = trace.FinalState;
         LastPulseSteps = trace.Steps;
+        LastPulseFeedback = CreatePulseFeedback(LevelState);
         if (LevelState.Global.Pulse == pulse)
         {
             LevelStateChanged?.Invoke(this);
@@ -108,6 +111,7 @@ public sealed class GameSession
     {
         LevelState = m_StartSnapshot;
         LastPulseSteps = Array.Empty<LevelState>();
+        LastPulseFeedback = Array.Empty<string>();
         LevelStateChanged?.Invoke(this);
     }
 
@@ -138,6 +142,30 @@ public sealed class GameSession
         PulseAdvanced?.Invoke(this);
     }
 
+    private static IReadOnlyList<string> CreatePulseFeedback(LevelState level)
+    {
+        var feedback = new List<string>();
+        if (level.Global.LevelState == ELevelState.Ready)
+            feedback.Add("Reactor ready");
+
+        if (level.Props.Any(prop => prop.Type == EPropType.Consumer && prop.ServiceStateFor(ECarrierType.Fuel) == EConsumerServiceState.Starved))
+            feedback.Add("Fuel consumer starved");
+
+        if (level.Props.Any(prop => prop.Type == EPropType.Consumer && prop.ServiceStateFor(ECarrierType.Water) == EConsumerServiceState.Starved))
+            feedback.Add("Water consumer starved");
+
+        if (level.Props.Any(prop => prop.Type == EPropType.Consumer && prop.ServiceStateFor(ECarrierType.Electricity) == EConsumerServiceState.Starved))
+            feedback.Add("Electricity consumer starved");
+
+        if (level.Surface.Any(surface => surface.IsWetElectricUnsafe()))
+            feedback.Add("Wet-electric risk");
+
+        if (level.Surface.Any(surface => surface.Heat >= Balancing.Current.RobotHeatSafetyThreshold))
+            feedback.Add("Heat danger");
+
+        return feedback.Count > 0 ? feedback : [level.Global.Status];
+    }
+
     private void CheckOutcome()
     {
         if (LevelState.Global.LevelState == ELevelState.Won)
@@ -150,6 +178,7 @@ public sealed class GameSession
     public GridPosition RobotPosition => LevelState.Robot.Position;
     public GlobalState GlobalState => LevelState.Global;
     public IReadOnlyList<Forecast> Forecasts => LevelState.Forecasts;
+    public IReadOnlyList<string> LastPulseFeedback { get; private set; } = Array.Empty<string>();
     public IReadOnlyList<LevelState> LastPulseSteps { get; private set; } = Array.Empty<LevelState>();
     public IReadOnlyList<LeakState> Leaks => LevelState.Leaks;
     public string LevelPath { get; private set; } = string.Empty;

src/ReactorMaintenance.Godot/Screens/GameOverScreen.cs

@@ -16,4 +16,16 @@ public partial class GameOverScreen : ScreenBase
         actions.AddChild(CreateButton("Retry Current Level", app.RetryCurrentLevel));
         actions.AddChild(CreateButton("Main Menu", app.ShowMainMenu));
     }
+
+    public void ConfigureLoadError(AppController app, CampaignLevel level, string message)
+    {
+        var body = CreatePage("Level Load Error");
+        body.Alignment = BoxContainer.AlignmentMode.Center;
+        body.AddChild(CreateBodyText($"{level.Name}: {message}"));
+
+        var actions = new HBoxContainer { SizeFlagsHorizontal = SizeFlags.ShrinkCenter };
+        body.AddChild(actions);
+        actions.AddChild(CreateButton("Retry", app.RetryCurrentLevel));
+        actions.AddChild(CreateButton("Main Menu", app.ShowMainMenu));
+    }
 }

src/ReactorMaintenance.Godot/Screens/LevelScreen.cs

@@ -431,13 +431,22 @@ public partial class LevelScreen : ScreenBase
             timer.Stop();
             UpdateUI();
             m_InputLocked = false;
-            SetEditorStatus(m_EditMode ? CurrentValidationText() : $"Pulse {m_Session?.LevelState.Global.Pulse ?? 0}");
+            SetEditorStatus(m_EditMode ? CurrentValidationText() : CurrentPulseFeedback());
             timer.QueueFree();
         };
         AddChild(timer);
         timer.Start();
     }
 
+    private string CurrentPulseFeedback()
+    {
+        if (m_Session is null)
+            return "Play mode";
+
+        var feedback = m_Session.LastPulseFeedback.Count > 0 ? string.Join(", ", m_Session.LastPulseFeedback) : m_Session.LevelState.Global.Status;
+        return $"Pulse {m_Session.LevelState.Global.Pulse}: {feedback}";
+    }
+
     private void ShowPlaybackSnapshot(LevelState snapshot)
     {
         m_GridViewport?.SetLevelState(snapshot);

src/ReactorMaintenance.Godot/Scripts/AppController.cs

@@ -1,6 +1,7 @@
 using Godot;
 using ReactorMaintenance.Godot.Data;
 using ReactorMaintenance.Godot.Screens;
+using ReactorMaintenance.Simulation;
 
 namespace ReactorMaintenance.Godot;
 
@@ -49,7 +50,17 @@ public partial class AppController : Control
         m_Session.MarkCurrentLevelLoaded();
         var level = m_Session.CurrentLevel;
         var gameSession = new GameSession();
-        var levelState = LevelStateLoader.Load(level.LevelPath);
+        LevelState levelState;
+        try
+        {
+            levelState = LevelStateLoader.Load(level.LevelPath);
+        }
+        catch (Exception ex)
+        {
+            ShowScreen<GameOverScreen>("res://Scenes/GameOverScreen.tscn", screen => screen.ConfigureLoadError(this, level, ex.Message));
+            return;
+        }
+
         gameSession.Initialize(levelState, level.LevelPath);
         ShowScreen<LevelScreen>("res://Scenes/LevelScreen.tscn", screen => screen.Configure(this, gameSession, level, m_Session.LevelNumber, m_Session.LevelCount));
     }