ADDED Requirements

Requirement: Long proof titles produce bounded nonfatal diagnostics

Local CommonJS and data-only shared previews SHALL return one warning when an authored level title is longer than 32 characters. The warning SHALL preserve levelId, levelTitle, sentence: null, and a source detail pointing to the authored title. Its player message SHALL recommend 24 characters or fewer. The warning SHALL not block installation or alter the normalized pack.

Scenario: A long title is surfaced with proof context

• WHEN a valid pack contains a level with a 33-character title
• THEN preview succeeds and returns a warning with that level's stable ID, full title, null sentence, and title source path

Scenario: Short titles remain quiet

• WHEN a valid pack contains a level title of 32 characters or fewer
• THEN the title diagnostics pass returns no title warning

Scenario: Diagnostics stay outside portable data

• WHEN a warned pack is installed, exported, or encoded as a shared link
• THEN its authored title is unchanged and no warning field is serialized