Expose Noesis visual coordinate conversion and hit testing to Lua

[nnn149]

Summary

Expose three Noesis visual-coordinate operations to Client Lua:

local clientPoint = visual:PointToScreen({ X = localX, Y = localY })
local localPoint = visual:PointFromScreen({ X = clientX, Y = clientY })
local hitVisual = visual:HitTest(localPoint)

The methods are registered on Noesis::Visual, so registered derived types inherit them. HitTest() returns the topmost hit Visual, or nil when there is no hit.

Implementation

• Add optional binary mappings and static symbols for:
  • Noesis::Visual::PointFromScreen
  • Noesis::Visual::PointToScreen
  • Noesis::VisualTreeHelper::HitTest
• Add { X, Y } serialization for Noesis::Point.
• Invoke the coordinate conversion methods with their real C++ member-function type so MSVC emits the hidden structure-return ABI correctly.
• Invoke HitTest with its real HitTestResult return type and expose only visualHit to Lua.
• Reject calls outside Client Lua, outside the Client owning thread, or when a mapping is unavailable.
• Keep the existing Lua lifetime checks for both receivers and returned visual proxies.

The mapped "screen" coordinate space is the game client/SDL logical coordinate space, with the origin at the client area's top-left.

Binary mapping evidence

Validated against game version 4.1.1.7209685.

• DX11 SHA-256: 3D3C703C4B94596876697C709C42024F2ADA5CCE4AF88F11D3B6408D61930D0F
• Vulkan SHA-256: 8A9D7A37844D294F7C55476D0EF02C4F033F41666F8FA1F4DA12DB1A41EFBD55

Symbol	DX11 RVA	Vulkan RVA
Visual::PointFromScreen	0x45E0700	0x45FA500
Visual::PointToScreen	0x45E0A20	0x45FA820
VisualTreeHelper::HitTest	0x46190A0	0x4632EA0

The production PointToScreen entry signature and the shared
PointFromScreen -> HitTest semantic call-site signature each match exactly
once in both executables. The shared call sites are at DX11 RVA 0x465C9FB
and Vulkan RVA 0x46767FB.

An independent 60-byte PointFromScreen entry signature also matches exactly
once in each executable and resolves to the same target as the semantic call
site. The independent entry signature is retained as a regression check rather
than duplicated in the production mappings.

DX11 function-body checks:

• PointFromScreen: 789 bytes,
  7A15A7AAE7CD0843FD1249C104CBB3BF1C8E0A45B616D03328F2E5ECE08B6DA8
• PointToScreen: 309 bytes,
  FBC1DBE8DBA93ABE475428EE0FE984668B09402025AA79D65033AB9212210182
• VisualTreeHelper::HitTest: 41 bytes,
  20700C73D891F268DEA9D8054AB09F266A6538AE063F6A4496FD782A2A677576

All three mappings use AllowFail. Missing mappings produce a descriptive Lua
error instead of invoking a null address.

Validation

• Built Game Debug|x64.
• Built Game Release|x64.
• Ran the property-map generator twice; the second run produced no changes.
• git diff --check passes.
• Verified all production and regression signatures are unique in both DX11
  and Vulkan.
• Performed live DX11 tests at:
  • 1280x720 windowed, 96 DPI
  • 1440x900 windowed, 96 DPI
  • 1440x900 windowed, 120 DPI
  • 1440x900 windowed after moving the window on the desktop
• Tested a visible inventory slot at its center, four corners, four inset
  corners, and an outside control point.
• Maximum local round-trip error: 0.000224517.
• Maximum client-coordinate round-trip error: 0.000062914.
• Center and inset points hit the target slot or one of its descendants; the
  outside point did not.
• SDL client-coordinate mouse movement to the returned center selected the same
  slot at every tested resolution and DPI.
• After closing and reopening the inventory, calls on saved old visual proxies
  failed with lifetime has expired; reacquired proxies succeeded.
• No ABI crash, stack/register corruption, or unstable coordinates were
  observed.