pub fn parse_block(block: &SettingsBlock) -> OpyResult<Settings>Expand description
Parse a settings block’s JSONC text into a typed CST settings tree.
Grammar: quoted keys, "/' strings with \ escapes, int/float numbers
(f64), true/false, arrays of strings, nested objects, trailing commas
in objects and arrays. Rejections (settings-invalid): duplicate keys,
non-object root, missing gamemodes group, malformed values.