Capture ERC outputs from the incremental schematic-build test harness used
during boost integration: per-feature slices (bins, junctions, labels,
no-connects, symbols 0-21, texts, wires) and cumulative/incremental runs.
The generating script lives in __pycache__ only (gitignored); these
reports document which slices were ERC-clean at integration time.
Confidence: medium
Scope-risk: narrow
