Add NIF previewer plugin with Linux-specific fixes

Vendored from github.com/Parapets/mo2-preview_nif and adapted for Linux:

- BSA texture resolution via MO2 virtual tree with case-insensitive
  fallback walk (Linux FS is case-sensitive; NIFs reference textures
  with arbitrary case against files on disk)
- Process-wide cached BSA candidate list, keyed by profile path,
  priority-sorted, filtering disabled mods
- Path backslash normalization before loose-file lookup
- Polygon offset on SLSF1_Decal-flagged shapes to break z-ties with
  coincident base meshes (road decals, moss overlays)
- Opaque framebuffer via glColorMask alpha lock so alpha-blended shapes
  can't bleed the dialog background through the preview area
- QMouseEvent::globalPosition().toPoint() for Qt6 compatibility

Preview dialog behavior (organizercore.cpp):
- Switch previewFile and previewFileWithAlternatives from stack-allocated
  exec() to heap + ApplicationModal + show() + WA_DeleteOnClose.
- Parent passed as nullptr so preview lifetime is decoupled from the
  stack-allocated ModInfoDialog that spawns it. Nested exec() inside
  the enclosing dialog's exec() was softlocking on close.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

1 files changed, 72 insertions, 0 deletions

diff --git a/libs/preview_nif/CMakePresets.json b/libs/preview_nif/CMakePresets.json
new file mode 100644
index 0000000..d00c664
--- /dev/null
+++ b/libs/preview_nif/CMakePresets.json
@@ -0,0 +1,72 @@
+{
+  "version": 3,
+  "configurePresets": [
+    {
+      "name": "windows-2022",
+      "generator": "Visual Studio 17 2022",
+      "binaryDir": "${sourceDir}/vsbuild",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": {
+          "type": "STRING",
+          "value": "Release"
+        },
+        "DEPENDENCIES_DIR": {
+          "type": "PATH",
+          "value": "${sourceDir}/../.."
+        },
+        "BOOST_ROOT": {
+          "type": "PATH",
+          "value": "${sourceDir}/../../boost_1_83_0"
+        },
+        "BOOST_LIBRARYDIR": {
+          "type": "PATH",
+          "value": "${sourceDir}/../../boost_1_83_0/lib64-msvc-14.3/lib"
+        },
+        "FMT_ROOT": {
+          "type": "PATH",
+          "value": "${sourceDir}/../../fmt-8.1.1"
+        },
+        "SPDLOG_ROOT": {
+          "type": "PATH",
+          "value": "${sourceDir}/../../spdlog-v1.10.0"
+        },
+        "LOOT_PATH": {
+          "type": "PATH",
+          "value": "${sourceDir}/../../libloot-0.22.1-win64"
+        },
+        "LZ4_ROOT": {
+          "type": "PATH",
+          "value": "${sourceDir}/../../lz4-v1.9.4"
+        },
+        "QT_ROOT": {
+          "type": "PATH",
+          "value": "C:/Qt/6.5.3/msvc2019_64"
+        },
+        "ZLIB_ROOT": {
+          "type": "PATH",
+          "value": "${sourceDir}/../../zlib-v1.3"
+        },
+        "PYTHON_ROOT": {
+          "type": "PATH",
+          "value": "${sourceDir}/../../python-3.11.5"
+        },
+        "SEVENZ_ROOT": {
+          "type": "PATH",
+          "value": "${sourceDir}/../../7zip-23.01"
+        },
+        "LIBBSARCH_ROOT": {
+          "type": "PATH",
+          "value": "${sourceDir}/../../libbsarch-0.0.9-release-x64"
+        },
+        "BOOST_DI_ROOT": {
+          "type": "PATH",
+          "value": "${sourceDir}/../../di"
+        },
+        "GTEST_ROOT": {
+          "type": "PATH",
+          "value": "${sourceDir}/../../googletest"
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file