Language bindings, KDE thumbnails, yapf compare, in-memory encoding

- yapf_encode() / yapf_free_buffer(): encode to memory; yapf_save uses it
- yapf.c also compiles as C++
- `yapf compare`: size and decode speed of the original format vs YAPF,
  with a lossless check
- bindings with tested examples: C++ (header-only), C# (P/Invoke),
  Rust (crate, builds the C code), Go (cgo), Java (FFM API, Java 22+),
  Zig (@cImport), LuaJIT (FFI), TypeScript types for the JS port;
  Python now encodes in memory
- docs/LANGUAGES.md and examples/ with measured results
- KDE Dolphin thumbnail plugin (KF6, CMake)
- README: honest status for Photoshop / VS Code / Figma (not run in the
  apps yet) and macOS (cross-compiled only), platform table

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

extensions/blender/README.md

@@ -20,7 +20,9 @@ the .blend** and survive saving and reopening.
    and pick the zip.
 
 The zip contains the native YAPF library for Windows, macOS and Linux (x64
-and ARM64).  If no library matches your system, the extension still
+and ARM64).  Tested in Blender 5.1 on Linux; the Windows library is tested
+outside Blender, and the macOS libraries are cross-compiled and **not yet run
+on a Mac**.  If no library matches your system, the extension still
 **imports** using a pure-Python decoder (numpy, bundled with Blender), but
 cannot export.