Evidence-backed compatibility matrices live here. Support claims must name the tested slicer / format / firmware families and versions, cite the fixtures used, and carry an evidence date. "Loads without crashing" is not equivalent to "faithfully interpreted" (Master Plan §9.4).
Support levels are declared with confidence states — known / inferred / approximated / unavailable — rather than binary pass/fail. Matrices are populated starting in E4 (Dialect & Container Compatibility, milestone M3); this directory is scaffolding until then.
Planned matrices:
slicers.md— Orca/Bambu, PrusaSlicer, Cura output.firmware.md— Klipper- and Marlin-targeted output.multi-tool.md— MMU/AMS, IDEX, toolchanger cases.containers.md—.gcode.3mfextraction coverage.