Leerness v1.36.187

Adds read-only runtime compatibility diagnosis and observed-layout write guards across CLI/MCP/REPL and I/O boundaries. Preserves legacy storage: no migration, activation, common control, or finalize. Improves Windows compatibility and bounded test failure diagnostics. Exact candidate 70b2a12 passed CI run 34007991873 (final 13/13); the original Windows fast timeout remains recorded. npm and attached tarball SHA-1: 6e7ce612fc7f4714ae3e330632a41c1ad2d9a324.