feat(R4-V1): command-selection family + state widening (closes M2-mechanics, M11, M12, M15)

MovementParameters gains the verbatim selection family:
GetCommand 0x0052aa00 (the walk-vs-run cascade INCLUDING the CanCharge
0x10 fast-path ACE dropped - retail's default can_charge=false + the
fast-path present, the A13+A15 canceling-pair trap avoided; inclusive
threshold edge per the raw), TowardsAndAway, GetDesiredHeading per the
live Ghidra decompile (fwd-towards 0 / fwd-away 180 / back-towards 180
/ back-away 0), FromWire/FromWireTurnTo (UnPackNet semantics, all 18 A4
masks round-tripped).

New MoveToMath: HeadingDiff per the live Ghidra decompile of 0x00528fb0
(the 360-diff NOT-TurnRight mirror + F_EPSILON 0.000199999995f - the
BN "arg unused" artifact corrected), HeadingGreater (the visible
TurnRight idiom), PositionHeading/Get/SetHeading reusing the codebase's
single yaw-heading convention (P5), CylinderDistance (PDB arg order;
planar-minus-radii shape documented as the interpretation - the raw's
x87 body is garbled; seam noted).

MovementType gains Invalid + retail 6/7/8/9; MovementStruct widened
(ObjectId/TopLevelId/Pos/Radius/Height/Params, additive); WeenieError
+= 0x0B/0x36/0x37/0x38/0x3D with retail-meaning doc comments.

148 new conformance tests. Full suite: 3,860 passed.

Implemented by a dedicated agent against the V0-pinned spec; scope +
suite independently verified.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/AcDream.Core.Tests/Physics/WeenieErrorCodeTableTests.cs

@@ -23,6 +23,15 @@ public sealed class WeenieErrorCodeTableTests
     public void NoPhysicsObject_Is0x08()
         => Assert.Equal(0x08u, (uint)WeenieError.NoPhysicsObject);
 
+    /// <summary>
+    /// 0x0B — NoMotionInterpreter. R4-V1 addition (M12), per
+    /// docs/research/2026-07-03-r4-moveto/r4-moveto-decomp.md §12 constants
+    /// inventory row (<c>8, 0xb, 0x36, 0x37, 0x38, 0x3d, 0x47</c>).
+    /// </summary>
+    [Fact]
+    public void NoMotionInterpreter_Is0x0B()
+        => Assert.Equal(0x0Bu, (uint)WeenieError.NoMotionInterpreter);
+
     [Fact]
     public void NotGrounded_Is0x24()
         => Assert.Equal(0x24u, (uint)WeenieError.NotGrounded);
@@ -43,6 +52,38 @@ public sealed class WeenieErrorCodeTableTests
     public void ChatEmoteOutsideNonCombat_Is0x42()
         => Assert.Equal(0x42u, (uint)WeenieError.ChatEmoteOutsideNonCombat);
 
+    /// <summary>
+    /// 0x36 — ActionCancelled. R4-V1 addition (M12). Site:
+    /// <c>MoveToManager::PerformMovement</c> (§3a @0052a901) — every new
+    /// moveto cancels the previous one with this code before dispatching;
+    /// also <c>CPhysicsObj::interrupt_current_movement</c>'s
+    /// <c>MovementManager::CancelMoveTo(0x36)</c> call (§9e). Per §7c, the
+    /// arg is NEVER READ inside <c>MoveToManager::CancelMoveTo</c>'s body in
+    /// this build — kept for parity/logging, not behavior.
+    /// </summary>
+    [Fact]
+    public void ActionCancelled_Is0x36()
+        => Assert.Equal(0x36u, (uint)WeenieError.ActionCancelled);
+
+    /// <summary>
+    /// 0x37 — ObjectGone. R4-V1 addition (M12). Site:
+    /// <c>MoveToManager::HandleUpdateTarget</c> (§6d @307866-307867) —
+    /// retarget delivery with a non-OK target status.
+    /// </summary>
+    [Fact]
+    public void ObjectGone_Is0x37()
+        => Assert.Equal(0x37u, (uint)WeenieError.ObjectGone);
+
+    /// <summary>
+    /// 0x38 — NoObject. R4-V1 addition (M12). Site:
+    /// <c>MoveToManager::HandleUpdateTarget</c> (§6d @307857-307858) — the
+    /// FIRST target callback arrives with a non-OK status (target never
+    /// resolved).
+    /// </summary>
+    [Fact]
+    public void NoObject_Is0x38()
+        => Assert.Equal(0x38u, (uint)WeenieError.NoObject);
+
     [Fact]
     public void ActionDepthExceeded_Is0x45()
         => Assert.Equal(0x45u, (uint)WeenieError.ActionDepthExceeded);
@@ -59,6 +100,15 @@ public sealed class WeenieErrorCodeTableTests
     public void CantJumpLoadedDown_Is0x49()
         => Assert.Equal(0x49u, (uint)WeenieError.CantJumpLoadedDown);
 
+    /// <summary>
+    /// 0x3D — YouChargedTooFar. R4-V1 addition (M12). Site:
+    /// <c>MoveToManager::HandleMoveToPosition</c> Phase 2 arrival check —
+    /// <c>fail_distance</c> exceeded (r4-moveto-decomp.md §6b).
+    /// </summary>
+    [Fact]
+    public void YouChargedTooFar_Is0x3D()
+        => Assert.Equal(0x3Du, (uint)WeenieError.YouChargedTooFar);
+
     /// <summary>
     /// Every code in the A10 table in one pass — guards against a
     /// future partial edit desyncing an individual test above from the
@@ -67,7 +117,11 @@ public sealed class WeenieErrorCodeTableTests
     [Theory]
     [InlineData(WeenieError.None, 0x00u)]
     [InlineData(WeenieError.NoPhysicsObject, 0x08u)]
+    [InlineData(WeenieError.NoMotionInterpreter, 0x0Bu)]
     [InlineData(WeenieError.NotGrounded, 0x24u)]
+    [InlineData(WeenieError.ActionCancelled, 0x36u)]
+    [InlineData(WeenieError.ObjectGone, 0x37u)]
+    [InlineData(WeenieError.NoObject, 0x38u)]
     [InlineData(WeenieError.CrouchInCombatStance, 0x3fu)]
     [InlineData(WeenieError.SitInCombatStance, 0x40u)]
     [InlineData(WeenieError.SleepInCombatStance, 0x41u)]
@@ -76,6 +130,7 @@ public sealed class WeenieErrorCodeTableTests
     [InlineData(WeenieError.GeneralMovementFailure, 0x47u)]
     [InlineData(WeenieError.YouCantJumpFromThisPosition, 0x48u)]
     [InlineData(WeenieError.CantJumpLoadedDown, 0x49u)]
+    [InlineData(WeenieError.YouChargedTooFar, 0x3Du)]
     public void A10Table_EveryCode_MatchesRetailNumericValue(WeenieError code, uint expected)
         => Assert.Equal(expected, (uint)code);
 }