=== Task 16: mkCodingRules rename ===
File: lib/coding-rules.nix (new)
Old file: lib/opencode-rules.nix (still exists for reference)

Both functions produce identical results:
true

lib/default.nix exports:
  # Coding rules injection utilities (renamed from opencode-rules)
  coding-rules = import ./coding-rules.nix {inherit lib;};
  # Backward-compat alias: opencode-rules → coding-rules
  opencode-rules = import ./coding-rules.nix {inherit lib;};