Address review feedback on documentation

- Remove Python bindings references (WIP, not fully functional)
- Fix rawtoaces_core.rst: remove non-existent classes, add actual functions
- Elaborate on data path: mention CMAKE_INSTALL_PREFIX, Windows limitation
- Add --data-dir command line parameter to environment setup
- Fix illuminant docs: blackbody temperatures must be below 4000K
- Fix dependencies: remove LibRaw (handled by OIIO), add nlohmann-json
- Fix spectral_data.rst: explicitly list Spectrum and SpectralData structs

Signed-off-by: pmady <[email protected]>

Author: pmady

docs/api/spectral_data.rst

@@ -17,8 +17,20 @@ The spectral data module provides structures for representing:
 - Color matching functions (CMFs)
 - Training spectral data
 
-Data Structures
----------------
+Spectrum
+--------
+
+.. doxygenstruct:: rta::core::Spectrum
+   :members:
+   :undoc-members:
+
+.. doxygenstruct:: rta::core::Spectrum::Shape
+   :members:
+   :undoc-members:
+
+SpectralData
+------------
 
-.. doxygenfile:: spectral_data.h
-   :sections: briefdescription detaileddescription innerclass innernamespace typedef enum func var define
+.. doxygenstruct:: rta::core::SpectralData
+   :members:
+   :undoc-members:

docs/getting_started.rst

@@ -11,10 +11,10 @@ RAWtoACES requires the following dependencies:
 
 - CMake 3.12 or later
 - C++17 compatible compiler
-- OpenImageIO
-- LibRaw
+- OpenImageIO (with RAW support via LibRaw)
 - Ceres Solver
 - Eigen3
+- nlohmann-json
 
 Build steps: