docs: update README and CLAUDE.md for hm-options, bump version to 0.1.1

- Add hm-options documentation to README.md
- Update CLAUDE.md with hm-options info, repository structure
- Add note about git-tracking new files before nix build/run
- Add version bump rules documentation
- Bump version from 0.1.0 to 0.1.1 (patch bump for internal/ changes)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cmd/nixos-options/main.go

@@ -19,7 +19,7 @@ import (
 
 const (
 	defaultDatabase = "sqlite://nixos-options.db"
-	version         = "0.1.0"
+	version         = "0.1.1"
 )
 
 func main() {