me-web? 0.15.4: a desktop with a wireless mouse is no longer taken for a laptop

- On Linux, a desktop computer with a wireless mouse, keyboard, headset or game controller was described as a
  laptop, with the advice to use a small always-on computer instead, because the battery inside the mouse was
  counted. Only the computer's own battery counts now.
- The mail card now leads with what big mailboxes care about most: when your address's reverse name looks like a
  home line, or there is none, that comes first. A blocklist that names your provider's whole network is still
  shown below it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

CLAUDE.md

@@ -77,7 +77,7 @@ The Android release key: alias `meweb`, certificate SHA-256
 | `src/MeWeb.Server/KnowledgeFeeder.cs` | refreshes the open network data under `/var/lib/meweb/knowledge` every six hours (iptoasn daily, DB-IP monthly, eight RouteViews RIBs weekly through `bzcat` (one or two collectors per continent, `Collectors`; each counts once per network in `UpstreamTally`, and a path's first AS, the collector's own neighbour, is never taken for an upstream), the AOSP carrier list weekly, the address registries' block files weekly (`Registries`: RIPE's and APNIC's `inetnum` and `inet6num` split files, AFRINIC's whole dump, LACNIC's `lacnic.db`)), builds `ip2asn.bin`, `networks.bin`, `carriers.json`, `registry.bin` (every block of the four, `RegistryBuilder`) and `SOURCES.txt` with `MeWeb.Core/Knowledge/Sources.cs`, and serves them at `/api/knowledge` |
 | `tools/knowledge.cs` | takes the server's knowledge files (`MEWEB_KNOWLEDGE_URL`, default the public server; the release sets `http://127.0.0.1:5480` after deploying the server first) into `artifacts/knowledge/`, checking each SHA-256, and falls back to building `ip2asn.bin` alone from iptoasn (`--local` forces that); `MeWeb.Core` embeds whatever is there; `tools/release.cs` runs it before every app build |
 | `tools/setup.cs` + `setup.json` | pinned build tools |
-| `tools/Screenshots` | headless renders of every view in every language |
+| `tools/Screenshots` | headless renders of every view in every language; it runs a real check, in a throwaway app folder (`AppServices.Folder`), so the developer's own history and settings stay untouched |
 | `branding/` | the icon (SVG source, PNG, ICO) |
 
 ## Pitfalls
@@ -232,6 +232,9 @@ The Android release key: alias `meweb`, certificate SHA-256
   phone with several): `AndroidPlatform` reads `ActivityManager.MemoryInfo.TotalMem`, Linux `/proc/meminfo`.
 - **`DriveInfo` on Unix takes any path** (it calls `statvfs`): pass the app's folder, not `/`, or Android reads the
   read-only root and reports no free disk at all.
+- **A wireless mouse is a battery to Linux.** `/sys/class/power_supply` lists the batteries of mice, keyboards, headsets
+  and game controllers too (`type` Battery, `scope` Device); only one without `scope` Device makes a laptop. Until
+  0.15.4 the owner's desktop read as a laptop because of an MX Master 4 (MW-VRST-EK5A).
 - **An IPv6 address only wraps at a colon if it is allowed to**: the path's detail lines put U+200B after each colon;
   they are plain `TextBlock`s for that reason, so a copy never carries the invisible character (the cards' values,
   which are selectable, stay untouched).

Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <Version>0.15.3</Version>
+    <Version>0.15.4</Version>
     <Product>me-web?</Product>
     <Company>Arasaka di Hvozdikov Yevheniy</Company>
     <Copyright>© 2026 Arasaka di Hvozdikov Yevheniy</Copyright>

src/MeWeb.App/AppServices.cs

@@ -15,6 +15,8 @@ public static class AppServices
   public const string Secure = "secure";
   public const string Plain = "plain";
 
+  public static string Folder { get; set; } = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "MeWeb");
+
   public static IServiceCollection AddMeWebApp(this IServiceCollection services, IPlatform platform)
   {
     var agent = $"me-web/{BuildInfo.Version}";
@@ -28,7 +30,7 @@ public static class AppServices
       return new ServerProbe(factory.CreateClient(Secure), factory.CreateClient(Plain));
     });
     services.AddSingleton<KnowledgeBase>();
-    var folder = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "MeWeb");
+    var folder = Folder;
     services.AddSingleton(new HistoryStore(folder));
     services.AddSingleton(new Leftovers(folder));
     services.AddSingleton(new Submissions(folder));

src/MeWeb.App/Services/AppSettings.cs

@@ -11,8 +11,7 @@ public class StoredSettings
 
 public static class AppSettings
 {
-  static readonly string Folder = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "MeWeb");
+  static string FilePath => Path.Combine(AppServices.Folder, "settings.json");
-  static readonly string FilePath = Path.Combine(Folder, "settings.json");
 
   public static StoredSettings Read()
   {
@@ -32,7 +31,7 @@ public static class AppSettings
   {
     try
     {
-      Directory.CreateDirectory(Folder);
+      Directory.CreateDirectory(AppServices.Folder);
       var temporary = FilePath + ".tmp";
       using (var stream = File.Create(temporary))
         JsonSerializer.Serialize(stream, settings, AppJsonContext.Default.StoredSettings);

src/MeWeb.App/Services/ErrorLog.cs

@@ -7,7 +7,7 @@ namespace MeWeb.App.Services;
 public static class ErrorLog
 {
   const long MaxBytes = 256 * 1024;
-  static readonly string FilePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "MeWeb", "errors.log");
+  static string FilePath => Path.Combine(AppServices.Folder, "errors.log");
   static readonly Lock Gate = new();
 
   public static void Watch()

src/MeWeb.Core/Checks/Verdicts.cs

@@ -337,14 +337,14 @@ public static class Verdicts
       { Port25: Core.Mail.PortState.Blocked } => (Outcome.Bad, "MailBlocked"),
       _ when listed.Count > 0 => (Outcome.Bad, "MailListed"),
       _ when mail.Listings.Any(l => l.Residential) => (Outcome.Caution, "MailResidential"),
-      _ when wide.Count > 0 => (Outcome.Caution, "MailNetworkListed"),
       { ReverseName: null } => (Outcome.Caution, "MailNoName"),
       { ReverseLooksDynamic: true } => (Outcome.Caution, "MailDynamicName"),
+      _ when wide.Count > 0 => (Outcome.Caution, "MailNetworkListed"),
       { Port25: Core.Mail.PortState.Open } => (Outcome.Good, "MailClean"),
       _ => (Outcome.Unknown, "MailUnknown"),
     };
-    if (listed.Count > 0) finding.Args = [string.Join(", ", listed.Select(l => l.List))];
+    if (finding.Summary == "MailListed") finding.Args = [string.Join(", ", listed.Select(l => l.List))];
-    else if (wide.Count > 0) finding.Args = [string.Join(", ", wide.Select(l => l.List))];
+    else if (finding.Summary == "MailNetworkListed") finding.Args = [string.Join(", ", wide.Select(l => l.List))];
     finding.WithKey("FactPort25", mail.Port25 switch
     {
       Core.Mail.PortState.Open => "ValuePort25Open",

src/MeWeb.Core/Net/LocalNetwork.cs

@@ -105,7 +105,7 @@ public class SystemPlatform : IPlatform
       try
       {
         return Directory.Exists("/sys/class/power_supply") && Directory.EnumerateDirectories("/sys/class/power_supply")
-          .Any(d => File.Exists(Path.Combine(d, "type")) && File.ReadAllText(Path.Combine(d, "type")).Trim() == "Battery");
+          .Any(d => Attribute(d, "type") == "Battery" && Attribute(d, "scope") != "Device");
       }
       catch (Exception ex) when (ex is IOException or UnauthorizedAccessException)
       {
@@ -183,6 +183,12 @@ public class SystemPlatform : IPlatform
     return product.StartsWith(maker, StringComparison.OrdinalIgnoreCase) ? product : $"{maker} {product}";
   }
 
+  static string Attribute(string folder, string name)
+  {
+    var path = Path.Combine(folder, name);
+    return File.Exists(path) ? File.ReadAllText(path).Trim() : null;
+  }
+
   static string Dmi(string name)
   {
     try

tools/Screenshots/Program.cs

@@ -16,11 +16,12 @@ using Microsoft.Extensions.DependencyInjection;
 var output = args.Length > 0 ? args[0] : Path.Combine("dist", "screenshots");
 var codes = args.Length > 1 ? args[1].Split(',', StringSplitOptions.RemoveEmptyEntries) : Languages.All.Select(l => l.Code).ToArray();
 Directory.CreateDirectory(output);
+var data = Directory.CreateTempSubdirectory("meweb-screenshots-");
+AppServices.Folder = data.FullName;
 
 var session = HeadlessUnitTestSession.StartNew(typeof(ScreenshotEntry));
 await session.Dispatch(async () =>
 {
-  var saved = AppSettings.Read();
   var run = await App.Services.GetRequiredService<CheckRunner>().Run((_, _) => { }, CancellationToken.None);
   Console.WriteLine($"run: {string.Join(", ", run.Findings.Select(f => $"{f.Id}={f.Outcome}"))}");
   foreach (var (width, height, label) in new[] { (1100, 1500, "desktop"), (400, 8000, "phone") })
@@ -48,9 +49,9 @@ await session.Dispatch(async () =>
       });
     }
   }
-  AppSettings.Write(saved);
   return 0;
 }, CancellationToken.None);
+data.Delete(true);
 Environment.Exit(0);
 
 void Shoot(int width, int height, string name, Action<MainViewModel> prepare, Action<MainView> arrange = null)