Invalid JSON + invalid OAS is not recognized as such about spectral HOT 4 OPEN

just a few thoughts

1. the trailing comma problem isn't really the domain of spectral - spectral cares more about the sematics of the content than the syntax. another tool might help!
2. im thinking like a "format/detect/core property" configuration for rule sets that the core engine would consult to ensure that one of those must exist: json schema, oas, asyncapi, etc. it might have to be behind a new flag but if the "detector" doesn't find one, then its an error
3. since the ruleset didn't see this as an oas file, then it didnt run, hence missing paths wasn't checked

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@daniel-white Thanks for your response!

1. Can you please recommend me something appropriate for the syntax validations though?
2. Should I create a separate issue for it? ("openap" key issue)
3. But shouldn't the tool see all the files I am trying to validate as OAS files explicitly, and throw errors accordingly? The file could be incorrect due to human error, and internally Spectral "decides" that it's not OAS and so won't do any validation... That's kinda weird (if I understood this correctly).

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