A build that stops shows make_game.py's message as it is, and a crash leaves only a log a player has to
find and attach to an issue. Now:

- Core/Problems.cs: make_game.py's and the game's own messages mapped to a plain headline,
  what to do and a fix (antivirus removed the tools, another game version, an incomplete dump, a full
  drive, the build out of memory, a lost GPU, no mesh shaders); a crash's signature (exception code and
  module+offset, no folder) for grouping. A message it doesn't know stays "The build stopped".
- ProblemReport.cs: the report under the issue form's headings, as the game's Bug report writes them,
  the log's end with the home folder and user name taken out by the game's own rule; CrashCheck finds a
  crash in a build's last run (or the run before) at the launcher's next start, once per log.
- ReportSender.cs: one https POST to a report inbox (docs/launcher-reports.md); none is set up yet, so
  Send copies the report and opens the issue form. LONGSHOT_REPORT_URL for trying an inbox.
- The report page: what happened, the fix (the driver page for the card's maker), consent asked once
  (Always send, Just this once, Never send) with "What gets sent"; the build's problem screen uses the
  plain words and has Send report; the settings have Problem reports.

tests/launcher_core/ProblemChecks.cs covers the mapping, the redaction (the game's cases), the crash
found once, the report, the settings and the inbox rules. Built with warnings as errors; 480 checks
pass. The crash page checked on Linux with a crashed build's log.

Ported from Hookshot's feat/launcher-problem-reports (launcher/ there): names, the log files and the issue
form are Longshot's, and the issue form is on git.magicbean.dev.

Assisted-by: Claude Opus 5.5

@@ -530,0 +538,4 @@
+    public string Head => Problem.Kind == ProblemKind.Unknown ? "make_game.py stopped" : Problem.Headline;
+    public string Body => Problem.Kind == ProblemKind.Unknown
+        ? $"Building {build.Job.Shown} stopped in {Stage}, {Percent}% of the way through. It said: {Why}"
+        : $"{Problem.Detail} (Building {build.Job.Shown} stopped in {Stage}, {Percent}% of the way through.)";

@@ -42,0 +48,4 @@
+        var s = Service.Settings;
+        foreach (var b in Service.Registry.Builds)
+        {
+            var found = CrashCheck.Find(b.Folder, s.SeenCrashLogs.GetValueOrDefault(b.Folder), Service.Gpus.FirstOrDefault());

@@ -0,0 +29,4 @@
+        NeverCommand = new Command(() => { Choose(ReportConsent.Never); Close(); });
+        CopyCommand = new Command(() => _ = Copy());
+        CloseCommand = new Command(Close);
+        if (Consent == ReportConsent.Always) _ = Send();

@@ -0,0 +79,4 @@
+            main.Host?.Open(ReportSender.IssueForm);
+            return;
+        }
+        sending = true;

@@ -0,0 +15,4 @@
+        <!-- (the first time: the player's choice, which the settings keep) -->
+        <Button Content="Never send" Command="{Binding NeverCommand}" IsVisible="{Binding AskConsent}"/>
+        <Button Content="Just this once" Command="{Binding OnceCommand}" IsVisible="{Binding AskConsent}"/>
+        <Button Classes="primary" Content="Always send" Command="{Binding AlwaysCommand}" IsVisible="{Binding AskConsent}"/>

@@ -0,0 +60,4 @@
+    }
+
+    /// The end of a file, at most max bytes, from the start of a line
+    public static string Tail(string path, int max = LogTailBytes)

@@ -0,0 +97,4 @@
+        t.Append("### Longshot version\n\n").Append(version).Append("\n\n");
+        t.Append("### Graphics card and driver version\n\n").Append(GpuLine(lines) ?? "not in the log").Append("\n\n");
+        t.Append("### CPU, RAM and operating system\n\n").Append(system).Append("\n\n");
+        if (logText != null) t.Append("### longshot_log.txt\n\n```\n").Append(R(logText)).Append("\n```\n\n");

@@ -0,0 +50,4 @@
+    {
+        var w = why ?? "";
+        bool Has(string s) => w.Contains(s, StringComparison.OrdinalIgnoreCase);
+        if (Has("antivirus") || Has("quarantine"))

@@ -0,0 +55,4 @@
+                "This is a false alarm: Longshot's build tools aren't signed, so some antivirus programs flag them. Restore the " +
+                "files from your antivirus's quarantine (Windows Security: Protection history), or allow Longshot's folder, then " +
+                "repair and build again.", [new Fix(FixKind.Repair, "Repair and build again")]);
+        if (Has("Longshot supports build") || Has("isn't supported") || Has("not supported"))

@@ -0,0 +75,4 @@
+            "Something went wrong that Longshot doesn't recognise. Sending a report helps us fix it.", [BuildAgain]);
+    }
+
+    [GeneratedRegex(@"CRASH: exception (0x[0-9a-fA-F]+) \((read|write)[^)]*\) at (\S+)")]

@@ -0,0 +93,4 @@
+            }
+            if (line.Contains("device lost", StringComparison.OrdinalIgnoreCase) ||
+                line.Contains("VK_ERROR_DEVICE_LOST", StringComparison.Ordinal)) lost = true;
+            if (line.Contains("this GPU has no mesh shaders", StringComparison.Ordinal)) noMesh = true;

@@ -0,0 +103,4 @@
+            return new Problem(ProblemKind.GpuLost, "The graphics driver stopped responding",
+                "This is often fixed by the latest graphics driver. If it keeps happening, sending a report helps us find the cause.",
+                [DriverFix(vendor)], Signature(crash, module, "device lost"));
+        if (crash == null) return null;

@@ -0,0 +17,4 @@
+public static class ReportSender
+{
+    /// The inbox; LONGSHOT_REPORT_URL over it (for trying an inbox out). https only
+    public const string? DefaultInbox = null;

@@ -0,0 +2,4 @@
+
+When a build stops or the game closes unexpectedly, the launcher explains what happened in plain words, offers the fix it
+knows, and can send a report to the developers with one button, so a player needs no forge account and no idea where the
+log is. This page is the contract between the launcher (`launcher/Core/Problems.cs`, `ProblemReport.cs`,

@@ -0,0 +86,4 @@
+        var r = await ReportSender.Send(report.Value, inbox);
+        sending = false;
+        sent = r.Sent;
+        Status = r.Sent ? r.Message : r.Message + " Try Send again later, or Copy report and paste it into the issue form.";

@@ -0,0 +42,4 @@
+          <TextBlock Text="{Binding Detail}" Foreground="{StaticResource InkSoft}" TextWrapping="Wrap" MaxWidth="680" HorizontalAlignment="Left"/>
+          <Button HorizontalAlignment="Left" Content="{Binding Fix.Label}" Command="{Binding FixCommand}" IsVisible="{Binding Fix, Converter={x:Static ObjectConverters.IsNotNull}}"/>
+          <TextBlock Foreground="{StaticResource InkSoft}" TextWrapping="Wrap" MaxWidth="680" HorizontalAlignment="Left" IsVisible="{Binding AskConsent}"
+                     Text="Can we send a report about this to the developers? It holds your Longshot version, your graphics card, system and the game's log, with your user name taken out. No saves, no game files. You choose once; the launcher's settings can change it."/>

@@ -92,0 +93,4 @@
+          <StackPanel VerticalAlignment="Center">
+            <TextBlock Text="Problem reports" FontWeight="SemiBold"/>
+            <TextBlock FontSize="12" Foreground="{StaticResource InkSoft}" TextWrapping="Wrap" MaxWidth="460"
+                       Text="When a build stops or the game closes unexpectedly: the version, your graphics card and system, and the log, with your user name taken out. No saves or game files."/>

@@ -0,0 +94,4 @@
+        t.Append("### What happened\n\n").Append(problem.Headline);
+        if (problem.Signature != null) t.Append(" (").Append(problem.Signature).Append(')');
+        t.Append("\n\nSent from the Longshot Launcher").Append(log != null ? " after the game closed unexpectedly" : " after a build stopped").Append(".\n\n");
+        t.Append("### Longshot version\n\n").Append(version).Append("\n\n");

@@ -0,0 +97,4 @@
+        t.Append("### Longshot version\n\n").Append(version).Append("\n\n");
+        t.Append("### Graphics card and driver version\n\n").Append(GpuLine(lines) ?? "not in the log").Append("\n\n");
+        t.Append("### CPU, RAM and operating system\n\n").Append(system).Append("\n\n");
+        if (logText != null) t.Append("### longshot_log.txt\n\n```\n").Append(R(logText)).Append("\n```\n\n");

@@ -0,0 +96,4 @@
+            if (line.Contains("this GPU has no mesh shaders", StringComparison.Ordinal)) noMesh = true;
+        }
+        if (noMesh)
+            return new Problem(ProblemKind.NoMeshShaders, "Your graphics card can't draw this game",

@@ -0,0 +18,4 @@
+public static class ReportSender
+{
+    /// The inbox; LONGSHOT_REPORT_URL over it (for trying an inbox out). https only
+    public const string? DefaultInbox = "https://longshot.magicbean.dev/report";