Fixes #30 /claim #30

[theherrovn-sys]

Fixes #30 /claim #30

• Changed withResponseObjectCheck middleware to throw RawJsonResponseError (extends BadRequestError, an HttpException) instead of plain Error
• This ensures the error message "Use ctx.json({...}) instead of returning an object directly" properly propagates through the middleware chain
• Updated withUnhandledExceptionHandling to return proper JSON error responses for HttpException instances instead of blank 500 responses
• All 185 tests pass, including do-not-allow-raw-json and invalid-response-error tests

[MikeGarciaAGM]

Looks good. The response-object check and exception handling changes are tightly scoped, and the new coverage matches the intended contract cleanly.