Merge repeated list lowering, directory scanning, SHA1-store writes, VPI lookup keys, type-parameter splitting, DefineT width normalization, and LSP helpers. Source-only change: 235 added, 793 deleted (net -558 lines).
Merge repeated list lowering, directory scanning, SHA1-store writes, VPI lookup keys, type-parameter splitting, DefineT width normalization, and LSP helpers. Source-only change: 235 added, 793 deleted (net -558 lines).