buildForge
private fun buildForge(mcUri: String, version: String, cacheDir: Path, mappings: Path, symbolsDir: Path)
Forge Mixed-SRG variant: download MCPConfig (obf->srg) + Mojang (named<->obf), then hop to the masking loader to assemble srg_to_official.tsrg + reverse-remap the Mixed-SRG runtime jar into a mojmap symbol jar.