feat(rgbd): add RGB-D reconstruction pipeline

Add end-to-end RGB-D reconstruction support across the C++ core and Python API.

- add a native merge_rgbd_views path, view-aware 3D pose containers, and nanobind bindings

- expose Python helpers to sample aligned depth, apply per-joint offsets, lift UVD poses to world space, and run reconstruct_rgbd

- add RGB-D regression tests for merging, manual pipeline parity, symmetric depth sampling windows, and out-of-bounds joints

- bump the project version from 0.1.0 to 0.2.0 for the new feature surface

uv.lock

@@ -230,7 +230,7 @@ wheels = [
 
 [[package]]
 name = "rapid-pose-triangulation"
-version = "0.1.0"
+version = "0.2.0"
 source = { editable = "." }
 dependencies = [
     { name = "numpy", version = "2.2.6", source = { registry = "https://mirrors.tuna.tsinghua.edu.cn/pypi/web/simple/" }, marker = "python_full_version < '3.11'" },