CBS Phase 2c v1.3c: Depth-Aligned Early-Termination Artifact (Locked Run and Reproduction)

Source-locked empirical artifact for the paper "CBS Monotonicity and Magic Numbers for Transfer-Aware Hierarchical Scheduling". Contains the locked 2026-03-21 JSON readout (n=1024: all criteria pass; n=8192: worst-element relative error 0.382%, skip rate 18.13%, pair-work reduction 1.221×), the executing notebook (single-threaded pure-Python O(n²) pairwise protocol, k=4, λ=1.0), and a 2026-08-24 same-protocol rerun with console log. Field-naming caveats (the JSON "speedup" field is a deterministic pair-count ratio, not a wall-clock measurement; the M10d flag is a known gate-definition artifact) are documented in the bundled README.