Module debug 

CuDebug: lightweight time-travel debugger helpers on top of Copper logs.

Design goals:

• Do not load entire copperlists into memory (logs can be huge).
• Build a compact section index in one streaming pass (copperlists + keyframes).
• Keep keyframes in memory (much smaller) and lazily page copperlist sections with a tiny LRU cache for snappy stepping.
• Reuse the public CuSimApplication API and user-provided sim callbacks.

Structs

CuDebugSession

JumpOutcome

Result of a jump/step, useful for benchmarking cache effectiveness.

SectionCacheStats

Section-cache statistics for a debug session.