[Epic][M3] Mod Compatibility Studio

[Prekzursil]

Scope

Enable custom-mod onboarding through guided profile bootstrap and signature calibration, within safe-method boundaries.

Acceptance Criteria

• Onboarding wizard can bootstrap from nearest base profile.
• Launch sample capture and metadata hint scaffolding are generated.
• Signature calibration artifacts (fingerprint + candidates + notes) are exportable.
• Compatibility report matrix exists before profile promotion.

Roadmap Link

• PLAN.md -> M3: Mod Compatibility Studio