DVD: select the longest authored title when skipping menus

[jzhvymetal]

Summary

• inspect authored title chains when menu skipping is requested
• choose the longest valid first-referenced program chain instead of relying on disc ordering
• preserve ordinary authored-menu behavior when skipping is not requested

Validation

• Complete Java suite passed in the Vibe extraction workspace.

Review state

Draft: requires a broader physical-disc corpus before merge.

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This replaces OpenSageTV#9, which was opened against an intermediate fork instead of the canonical SageTV repository. The topic was replayed without patch changes onto the current canonical master.

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[jzhvymetal]

Closing because this implements an optional Vibe skip-menus policy rather than correcting demonstrated stock SageTV behavior. The longest-title heuristic still needs a broader authored-disc corpus and can choose incorrectly on unusual discs. It should remain Vibe-side evidence unless a stock user issue and an upstream-approved policy require reconsideration.