Function parse_mod_statements 

fn parse_mod_statements(
    fs: &FileSystem,
    path: &Path,
    original_db_name: &str,
    profile_suffix: Option<&str>,
    variables: &BTreeMap<String, String>,
    profile_set: bool,
    db: &mut BuildArtifact,
) -> Result<Option<Vec<Statement<Raw>>>, ProjectError>

Parse mod statements from a SQL file, optionally rewriting database names.

If profile_suffix is Some, all UnresolvedDatabaseName nodes matching original_db_name are rewritten at the AST level by appending the suffix. This is safer than raw text substitution because it only touches identifier nodes, not string literals or comments.