chore: repository cleanup - remove large binaries from tracking and update .gitignore

.gitignore

@@ -68,10 +68,21 @@ desktop.ini
 # Project-specific directories and files
 .benchmarks/
 
-# Marketing - Large binary files
+# Marketing - Large binary files and assets
-marketing/screenrecords/*.mp4
+marketing/**/*.mp4
-marketing/voice/*.wav
+marketing/**/*.mov
-marketing/*.psd
+marketing/**/*.wav
+marketing/**/*.psd
+marketing/**/*.blend
+marketing/**/*.blend[0-9]
+marketing/screenrecords/
+marketing/voice/
+marketing/thumbnails/
+
+# Build and Distribution
+dist/
+*.whl
+src/blender_manifest.toml
 
 # Temporary files
 *.tmp