[bl-young]

cc:
Closes: #1151

What changed? Why?

Production is Cornerstone-only (335220 for major household appliances). This removes dead CEDA allocator/Make-Use helpers, orphan FlowSA targets and activity-to-sector crosswalks, unused USDA/PCE CEDA parsers, unused CEDA_COUNTRY* taxonomy, and the unused 2012 CEDA6IO loaders. Live MECS industry maps use native 335220 keys (no import-time remapper), and the price-index detail name map remaps leftover 2012 appliance names to 335220 and pump equipment from 33391A to 333914.

Removed entry points (none were selected by USA model or waterfall configs): extract/allocation/bea.py Make/Use/PCE loaders and CEDA aligners; FlowSA method CEDA_2025_target plus Sector_Crosswalk_*_CEDA CSVs; regenerate USDA_CoA_Cropland_CEDA / USDA_CoA_Livestock_CEDA / BEA_PCE_CEDA FBAs; import extract.iot.io_2012 or utils.taxonomy.countries. CEDA-named waterfalls (v03_waterfall_ceda_g1a / g1b) and diagnostic CEDA/USEEIO alignment stay runnable.

Impact

No model output change: MECS exported maps match the prior keys as sets, and configured GO/PI vintages already use the aggregate appliance and 333914 names.

Testing

Unit coverage for mapping-name collection and Cornerstone MECS manufacturing coverage; Black and Ruff clean at repo root.

uv run pytest bedrock/utils/config/__tests__/test_diff_methods.py bedrock/transform/allocation/__tests__/test_mecs_mapping.py -v -m "not eeio_integration"
uv run black --check .
uv run ruff check .

Review focus

• Confirm diagnostic CEDA/USEEIO paths (diagnostics_helpers, ceda_v7, waterfall decks) are untouched on purpose
• Spot-check PRICE_INDEX_DETAIL_NAME_TO_BEA_2017_INDUSTRY_MAPPING appliance and pump remaps keep vintage labels as keys