test: classify prerequisite lanes and own Avalonia sessions

tests/AcDream.App.Tests/Credentials/AppCredentialResolverTests.cs

@@ -131,6 +131,7 @@ public sealed class AppCredentialResolverTests
     }
 
     [Fact]
+    [Trait("Lane", "Linux")]
     public void LinuxRejectsGroupOrOtherCredentialPermissions()
     {
         if (!OperatingSystem.IsLinux())

tests/AcDream.App.Tests/Rendering/ChargenPreviewEntityBuilderTests.cs

@@ -20,6 +20,7 @@ namespace AcDream.App.Tests.Rendering;
 /// is resolving Setup/GfxObj/Surface/Animation dat data that
 /// <see cref="DollEntityBuilder"/> receives pre-resolved).
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public sealed class ChargenPreviewEntityBuilderTests
 {
     private readonly ITestOutputHelper _out;

tests/AcDream.App.Tests/Rendering/CornerFloodReplayTests.cs

@@ -198,6 +198,7 @@ public class CornerFloodReplayTests
     /// exact gate that flips.
     /// </summary>
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void Diagnostic_TraceGoodVsGlitchStep()
     {
         var datDir = ResolveDatDir();
@@ -266,6 +267,7 @@ public class CornerFloodReplayTests
     /// transition background strobe). Guards the ApplyReciprocalClip pipeline.
     /// </summary>
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void CornerSweep_FloodIsCompleteAndMonotone()
     {
         var datDir = ResolveDatDir();
@@ -363,6 +365,7 @@ public class CornerFloodReplayTests
     /// the tripwire count stays 0.
     /// </summary>
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void PortalPlaneCrossings_InPlacePropagationConverges()
     {
         var datDir = ResolveDatDir();
@@ -433,6 +436,7 @@ public class CornerFloodReplayTests
     /// stays 0 across every Build.
     /// </summary>
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void InCellDirectionSweep_InPlacePropagationConverges()
     {
         var datDir = ResolveDatDir();
@@ -495,6 +499,7 @@ public class CornerFloodReplayTests
     /// the collapsing intersection.
     /// </summary>
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void Diagnostic_Hop2Microscope()
     {
         var datDir = ResolveDatDir();
@@ -625,6 +630,7 @@ public class CornerFloodReplayTests
     /// 0171/0173 — the screen area where the player stands then shows background.
     /// </summary>
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void Diagnostic_CornerPress_FloodAcrossDoorwayPlane()
     {
         var datDir = ResolveDatDir();

tests/AcDream.App.Tests/Rendering/FramePacingControllerTests.cs

@@ -119,6 +119,7 @@ public sealed class FramePacingControllerTests
     }
 
     [Fact]
+    [Trait("Lane", "Windows")]
     public void Windows_high_resolution_timer_arms_and_disposes_its_handle()
     {
         if (!OperatingSystem.IsWindowsVersionAtLeast(10, 0, 17134))

tests/AcDream.App.Tests/Rendering/HouseExitWalkReplayTests.cs

@@ -49,6 +49,7 @@ namespace AcDream.App.Tests.Rendering;
 /// OutsideView ⇒ outdoor dynamics trivially cone-pass).
 /// </summary>
 [Collection(CameraDiagnosticsCollection.Name)]
+[Trait("Lane", "InstalledDat")]
 public class HouseExitWalkReplayTests
 {
     private readonly ITestOutputHelper _out;

tests/AcDream.App.Tests/Rendering/Issue113DrawingBspFilterTests.cs

@@ -19,6 +19,7 @@ namespace AcDream.App.Tests.Rendering;
 /// iterated the dictionary and drew the "phantom staircase". These pins hold
 /// ObjectMeshManager.CollectDrawingBspPolygonIds to the dat facts.
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public class Issue113DrawingBspFilterTests
 {
     private readonly ITestOutputHelper _out;

tests/AcDream.App.Tests/Rendering/Issue113MeetingHallFloodTests.cs

@@ -29,6 +29,7 @@ namespace AcDream.App.Tests.Rendering;
 /// production assembler from the user's click-time viewpoint and pins which
 /// hall cells draw and with what clip.
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public class Issue113MeetingHallFloodTests
 {
     private readonly ITestOutputHelper _out;

tests/AcDream.App.Tests/Rendering/Issue120ReciprocalPingPongTests.cs

@@ -34,6 +34,7 @@ namespace AcDream.App.Tests.Rendering;
 /// contained polygons, which makes union growth strictly area-increasing and
 /// the flood convergent regardless of clip-numerics drift.
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public class Issue120ReciprocalPingPongTests
 {
     private readonly ITestOutputHelper _out;

tests/AcDream.App.Tests/Rendering/Issue124LookInSeedRegionTests.cs

@@ -18,6 +18,7 @@ namespace AcDream.App.Tests.Rendering;
 /// seedRegion parameter — the port of that installed-view clip — against the
 /// real Holtburg corner-building door.
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public class Issue124LookInSeedRegionTests
 {
     private readonly ITestOutputHelper _out;

tests/AcDream.App.Tests/Rendering/Issue130DoorwayStripTests.cs

@@ -38,6 +38,7 @@ namespace AcDream.App.Tests.Rendering;
 /// cut). Fixed by the conservative NdcScissorRect bound; the assertions below
 /// pin both properties.
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public class Issue130DoorwayStripTests
 {
     private readonly ITestOutputHelper _out;

tests/AcDream.App.Tests/Rendering/Issue131SetupProbeTests.cs

@@ -15,6 +15,7 @@ namespace AcDream.App.Tests.Rendering;
 /// translucent swirl; lamp posts / creatures / signs identify by part shape.
 /// </summary>
 [Trait("Purpose", "Diagnostic")]
+[Trait("Lane", "InstalledDat")]
 public class Issue131SetupProbeTests
 {
     private readonly ITestOutputHelper _out;

tests/AcDream.App.Tests/Rendering/Issue176177FacilityHubFloodReplayTests.cs

@@ -33,6 +33,7 @@ namespace AcDream.App.Tests.Rendering;
 ///  D. #176 walk — eye tracks down the corridor across two seams, gaze
 ///     locked +X: per-step admitted-set diffs (drop-for-one-step churn).
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public class Issue176177FacilityHubFloodReplayTests
 {
     private const uint FacilityHub = 0x8A020000u;

tests/AcDream.App.Tests/Rendering/Issue177StairDescentCameraFloodTests.cs

@@ -32,6 +32,7 @@ namespace AcDream.App.Tests.Rendering;
 /// admitted, the flood is exonerated and the artifact lives downstream.
 /// </summary>
 [Collection(CameraDiagnosticsCollection.Name)]
+[Trait("Lane", "InstalledDat")]
 public class Issue177StairDescentCameraFloodTests
 {
     private const uint FacilityHub = 0x8A020000u;

tests/AcDream.App.Tests/Rendering/Issue181VisFlapReplayTests.cs

@@ -22,6 +22,7 @@ namespace AcDream.App.Tests.Rendering;
 /// axis; ANY admitted-set difference at sub-mm perturbation is the #181
 /// instability, and the symmetric difference names the flapping cell.
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public class Issue181VisFlapReplayTests
 {
     private const uint FacilityHub = 0x8A020000u;

tests/AcDream.App.Tests/Rendering/Issue181WallPressEquilibriumTests.cs

@@ -33,6 +33,7 @@ namespace AcDream.App.Tests.Rendering;
 /// </summary>
 [Collection(CameraDiagnosticsCollection.Name)]
 [Trait("Purpose", "Diagnostic")]
+[Trait("Lane", "InstalledDat")]
 public class Issue181WallPressEquilibriumTests
 {
     private const uint FacilityHubLandblock = 0x8A020000u;

tests/AcDream.App.Tests/Rendering/Issue95DungeonFloodDiagnosticTests.cs

@@ -25,6 +25,7 @@ namespace AcDream.App.Tests.Rendering;
 /// root's stab_list size (<see cref="LoadedCell.VisibleCells"/>), plus how many visited cells
 /// cross landblocks. The single assertion just guarantees the test ran; the VALUE is the output.
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public class Issue95DungeonFloodDiagnosticTests
 {
     private const uint TownNetwork = 0x00070000u;

tests/AcDream.App.Tests/Rendering/LinuxMonotonicFramePacingWaiterTests.cs

@@ -48,6 +48,7 @@ public sealed class LinuxMonotonicFramePacingWaiterTests
     }
 
     [Fact]
+    [Trait("Lane", "Linux")]
     public void LinuxWaitBlocksUntilRequestedMonotonicDeadline()
     {
         if (!OperatingSystem.IsLinux())
@@ -70,6 +71,7 @@ public sealed class LinuxMonotonicFramePacingWaiterTests
     }
 
     [Fact]
+    [Trait("Lane", "Linux")]
     public void LinuxWaiterRejectsUseAfterDisposal()
     {
         if (!OperatingSystem.IsLinux())

tests/AcDream.App.Tests/Rendering/PortalTunnelAssetTests.cs

@@ -52,6 +52,7 @@ public sealed class PortalTunnelAssetTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void InstalledDat_ResolvesRetailPortalSetupAndAnimation()
     {
         string? datDir = ResolveDatDir();

tests/AcDream.App.Tests/Rendering/RetailParticleGeometryClassifierTests.cs

@@ -206,6 +206,7 @@ public sealed class RetailParticleGeometryClassifierTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void InstalledArmorSelfShieldPieces_areModeOneMeshesWithAuthoredApexFaces()
     {
         string? datDir = ResolveDatDir();
@@ -264,6 +265,7 @@ public sealed class RetailParticleGeometryClassifierTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void InstalledHumanEffectTable_MapsPortalVisibilityScripts()
     {
         string? datDir = ResolveDatDir();
@@ -278,6 +280,7 @@ public sealed class RetailParticleGeometryClassifierTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void InstalledAerlintheSwarmEmitter_UsesItsHardwareGfxDegradeDistance()
     {
         string? datDir = ResolveDatDir();

tests/AcDream.App.Tests/Rendering/RetailSelectionAssetTests.cs

@@ -16,6 +16,7 @@ namespace AcDream.App.Tests.Rendering;
 public sealed class RetailSelectionAssetTests
 {
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void InstalledDat_ResolvesAllTwelveVividTargetImages()
     {
         string datDir = ResolveDatDir();
@@ -58,6 +59,7 @@ public sealed class RetailSelectionAssetTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void DoorSelectionGeometry_UsesDrawingBspRootSphereAndDatPolygonOrder()
     {
         const uint doorGfxObjId = 0x010044B5u;

tests/AcDream.App.Tests/Streaming/LandblockBuildFactoryTests.cs

@@ -318,6 +318,7 @@ public sealed class LandblockBuildFactoryTests
     }
 
     [Fact]
+    [Trait("Lane", "PreparedPackage")]
     public void InstalledDatNearBuild_IsDeterministicAndClosesEntityPhysicsPayload()
     {
         string? datDirectory = ResolveDatDirectory();

tests/AcDream.App.Tests/UI/IconComposerTests.cs

@@ -75,6 +75,7 @@ public class IconComposerTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void ResolveUnderlayDid_goldenValues_matchDat()
     {
         var datDir = ResolveDatDir();
@@ -103,6 +104,7 @@ public class IconComposerTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void ResolveEffectDid_goldenValues_matchDat()
     {
         var datDir = ResolveDatDir();
@@ -128,6 +130,7 @@ public class IconComposerTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void TryGetEffectTile_noEffectBlack_magicalTextured()
     {
         var datDir = ResolveDatDir();

tests/AcDream.App.Tests/UI/Layout/CharacterLayoutImportProbe.cs

@@ -11,6 +11,7 @@ using Xunit;
 
 namespace AcDream.App.Tests.UI.Layout;
 
+[Trait("Lane", "InstalledDat")]
 public sealed class CharacterLayoutImportProbe
 {
     private const uint CharacterLayout = 0x2100002Eu;

tests/AcDream.App.Tests/UI/Layout/ChatIndicatorButtonLiveMountProbeTests.cs

@@ -54,6 +54,7 @@ namespace AcDream.App.Tests.UI.Layout;
 /// see its own class doc) are unaffected.
 /// </para>
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public sealed class ChatIndicatorButtonLiveMountProbeTests
 {
     [Fact]

tests/AcDream.App.Tests/UI/Layout/ChatOptionsDatDefaultsTests.cs

@@ -16,6 +16,7 @@ namespace AcDream.App.Tests.UI.Layout;
 public sealed class ChatOptionsDatDefaultsTests
 {
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void InstalledDat_ResolvesTheByteVerifiedSliderDefaults()
     {
         string datDir = ResolveDatDir();

tests/AcDream.App.Tests/UI/Layout/FaPanelSlotProbeTests.cs

@@ -15,6 +15,7 @@ namespace AcDream.App.Tests.UI.Layout;
 /// and 0x10000263 (swear-allegiance button). Env-gated like the other probes.
 /// </summary>
 [Trait("Purpose", "Diagnostic")]
+[Trait("Lane", "InstalledDat")]
 public sealed class FaPanelSlotProbeTests
 {
     [Fact]

tests/AcDream.App.Tests/UI/Layout/InventoryFrameImportProbe.cs

@@ -18,6 +18,7 @@ namespace AcDream.App.Tests.UI.Layout;
 /// backdrop (ZLevel 100 → ≈ −1,000,000), and the backdrop washed out the panels' captions,
 /// burden meter, and item cells. Skips when the live dat directory is absent (CI).
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public class InventoryFrameImportProbe
 {
     private const uint Frame          = 0x21000023u;

tests/AcDream.App.Tests/UI/Layout/ItemAppraisalTextFormatterTests.cs

@@ -749,6 +749,7 @@ public sealed class ItemAppraisalTextFormatterTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void EndOfRetailDatNameResolver_LoadsMaterialAndCreatureNames()
     {
         string? datDirectory = ResolveDatDirectory();

tests/AcDream.App.Tests/UI/Layout/ItemListCellTemplateTests.cs

@@ -15,6 +15,7 @@ namespace AcDream.App.Tests.UI.Layout;
 /// square 0x060074CF. Also PRINTS the resolved ids — the "pin the exact asset" record.
 /// Skips when the live dat directory is absent (CI).
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public class ItemListCellTemplateTests
 {
     private const uint Generic = 0x060074CFu;   // generic toolbar-shortcut empty square (the bug)

tests/AcDream.App.Tests/UI/Layout/KeyboardConfigLiveMountProbeTests.cs

@@ -16,6 +16,7 @@ namespace AcDream.App.Tests.UI.Layout;
 /// rect + caption evidence for each observation. Env-gated like the other
 /// live probes so CI/dat-less runs skip it.
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public sealed class KeyboardConfigLiveMountProbeTests
 {
     [Fact]

tests/AcDream.App.Tests/UI/Layout/MapHousePanelSlotProbeTests.cs

@@ -26,6 +26,7 @@ namespace AcDream.App.Tests.UI.Layout;
 /// </para>
 /// </summary>
 [Trait("Purpose", "Diagnostic")]
+[Trait("Lane", "InstalledDat")]
 public sealed class MapHousePanelSlotProbeTests
 {
     private const uint HostLayoutId = 0x2100006Eu;

tests/AcDream.App.Tests/UI/Layout/OptionsPanelLiveMountProbeTests.cs

@@ -16,6 +16,7 @@ namespace AcDream.App.Tests.UI.Layout;
 /// page controller actually resolves. Env-gated like the fixture
 /// generator so CI/dat-less runs skip it.
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public sealed class OptionsPanelLiveMountProbeTests
 {
     [Fact]

tests/AcDream.App.Tests/UI/Layout/PaperdollClickMapTests.cs

@@ -45,6 +45,7 @@ public sealed class PaperdollClickMapTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void LiveDat_resolvesRetailClickMapAndAllNineBodyRegions()
     {
         string datDir = Environment.GetEnvironmentVariable("ACDREAM_DAT_DIR")

tests/AcDream.App.Tests/UI/Layout/PaperdollSlotBackgroundTests.cs

@@ -47,6 +47,7 @@ public class PaperdollSlotBackgroundTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void Live_dat_resolves_all_pinned_retail_backgrounds()
     {
         string datDir = Environment.GetEnvironmentVariable("ACDREAM_DAT_DIR")

tests/AcDream.App.Tests/UI/Layout/PowerbarLayoutProbeTests.cs

@@ -15,6 +15,7 @@ namespace AcDream.App.Tests.UI.Layout;
 /// INSTALLED DAT, so the "Height"/"Power"/"Accuracy" fix binds exactly what
 /// retail authors instead of guessing.
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public sealed class PowerbarLayoutProbeTests
 {
     [Fact]

tests/AcDream.App.Tests/UI/Layout/SocialPanelLiveMountProbeTests.cs

@@ -18,6 +18,7 @@ namespace AcDream.App.Tests.UI.Layout;
 /// its button→page pairing + default entry can be recorded — coordinator
 /// addendum, docs/research/2026-08-11-fa-panel-structure.md §10.
 /// </summary>
+[Trait("Lane", "InstalledDat")]
 public sealed class SocialPanelLiveMountProbeTests
 {
     [Fact]

tests/AcDream.App.Tests/UI/Layout/SpellbookRowStyleTests.cs

@@ -4,6 +4,7 @@ using DatReaderWriter.Options;
 
 namespace AcDream.App.Tests.UI.Layout;
 
+[Trait("Lane", "InstalledDat")]
 public sealed class SpellbookRowStyleTests
 {
     [Fact]

tests/AcDream.App.Tests/UI/RetailCursorCatalogTests.cs

@@ -24,6 +24,7 @@ public sealed class RetailCursorCatalogTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void WindowControlCursorSpecs_resolveGoldenDatSurfaces()
     {
         string? datDir = ResolveDatDir();
@@ -82,6 +83,7 @@ public sealed class RetailCursorCatalogTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void ReachableGlobalCursorSpecs_resolveGoldenDatSurfaces()
     {
         string? datDir = ResolveDatDir();

tests/AcDream.App.Tests/UI/SpewBoxLayoutDumpDiagnostic.cs

@@ -76,6 +76,7 @@ namespace AcDream.App.Tests.UI;
 /// </para>
 /// </summary>
 [Trait("Purpose", "Diagnostic")]
+[Trait("Lane", "InstalledDat")]
 public sealed class SpewBoxLayoutDumpDiagnostic
 {
     private readonly ITestOutputHelper _out;

tests/AcDream.App.Tests/UI/UiDatFontBorderPixelTests.cs

@@ -35,6 +35,7 @@ public sealed class UiDatFontBorderPixelTests
     [InlineData(0x40000001u, 4u, 4u)]   // 18px bold serif — SpewBox face (round 4)
     [InlineData(0x40000002u, 3u, 3u)]   // 14px bold serif
     [InlineData(0x40000025u, 3u, 3u)]   // 11px — the pre-round-4 SpewBox placeholder face
+    [Trait("Lane", "InstalledDat")]
     public void RealDatFont_HasExpectedBorderPixels(uint fontId, uint expectedHorizontal, uint expectedVertical)
     {
         string? datDir = ResolveDatDir();
@@ -49,6 +50,7 @@ public sealed class UiDatFontBorderPixelTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void RealDatFont_EveryFontWithABackgroundAtlas_HasANonZeroBorder()
     {
         // docs/research/2026-08-10-retail-ui-text-style.md §1.2: "every font that

tests/AcDream.App.Tests/UI/UiRenderContextAlphaTests.cs

@@ -237,6 +237,7 @@ public sealed class UiRenderContextAlphaTests
     // -- DrawString (BitmapFont path): the same alpha chokepoint, guarded ---
 
     [Fact]
+    [Trait("Lane", "SystemFont")]
     public void FullOpacity_DrawString_BitmapFontPath_MatchesRequestedAlpha_Identity()
     {
         // CH6c review NIT: DrawStringDat (retail dat-font glyphs) had its own
@@ -258,6 +259,7 @@ public sealed class UiRenderContextAlphaTests
     }
 
     [Fact]
+    [Trait("Lane", "SystemFont")]
     public void HalfOpacityWindow_MultipliesBitmapFontGlyphAlpha()
     {
         var device = new RecordingGpuDevice();

tests/AcDream.App.Tests/World/LiveEntityPresentationControllerTests.cs

@@ -145,6 +145,7 @@ public sealed class LiveEntityPresentationControllerTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void SpellRecall_HiddenAndUnHide_RetireMagicTimelineThroughController()
     {
         const uint humanSetup = 0x02000001u;

tests/AcDream.App.Tests/World/RecallTeleportAnimationTests.cs

@@ -185,6 +185,7 @@ public sealed class RecallTeleportAnimationTests
     }
 
     [Fact]
+    [Trait("Lane", "InstalledDat")]
     public void InstalledRecall_HiddenEnterWorldPublishesFinishedCyclicPoseWithoutAdvancingTime()
     {
         string datDir = @"C:\Turbine\Asheron's Call";