release: rigorous ICCL claims 1-4 + 5a VERIFIED, 5b divergent

Add exact Claim 4 interference asymptotics audit

Reproduce Theorem 4.3: exact error formula is non-monotonic in context length under task misalignment (peak at M=1, 1.19) but monotone-decreasing when aligned

Update logbook: Repro - In-Context Continual Learning

Update logbook: Repro - In-Context Continual Learning

Update logbook: Repro - In-Context Continual Learning