Known matrix
Unknown combinations are not implied by nearby rows.
Five gates
A compatible file matches edition, project identity, Minecraft version, loader/runtime, and required relations. Passing four of five is still a failed match.
What we do not infer
Forge does not imply NeoForge, a 1.21.1 label does not imply all 1.21.x versions, Bedrock Windows does not accept a Java JAR, and the same entity name does not imply save/config compatibility.
Other-mod conflicts
The primary pages do not provide a complete pairwise compatibility database. When combining mods, start with a clean supported Verity setup and add the other mod in isolation. Label the result tested only with exact versions.
Update rule
The weekly source job detects project and file changes. A new release enters the matrix only after identity, version, loader, dependency, and maintainer-warning checks pass.