[lbougan]

Why

On 2026-09-02 the biosphere flow id scheme in sentier-importers changed (PR #13): the unit joined the uuid5 hash, so ids are now uuid5(name|category|subcategory|unit) instead of uuid5(name|category|subcategory|""). sentier-vocab (#33) and sentier-mappings were re-minted with the new scheme, but the payload in this repo was still the 2026-08-07 generation. As a result, 0 of 2,515 distinct biosphere flow ids in the inventory matched any source code in the bafu-2026-v1__ef-3.1 bridge in sentier-mappings, so no biosphere exchange could be resolved to an EF 3.1 flow.

How it was regenerated

Regenerated from sentier-importers at f14d448 using the 22 registry sources bafu-<sector>-processes and bafu-<sector>-exchanges for the 11 sectors (01-agriculture through 10-building-services plus 99-obsolete), processes before exchanges for each sector, delivered into this checkout with:

uv run sentier-importers run <source> --deliver-local /home/laurenz/dds/sentier-inventory

No changes were made to the importer. Only the 11 exchanges.parquet files differ; every processes.parquet and metadata.json came out byte-identical to main (the source citation in each metadata description is intact).

Verification

• Bridge match, distinct biosphere flow ids in exchanges.parquet versus source codes in sentier-mappings/data/bafu-2026-v1__ef-3.1/biosphere-*.json: before 0 / 2,515, after 2,558 / 2,679. The distinct count rose because flows that share name and category but differ in unit now receive separate ids, which is the purpose of the re-mint. The 121 remaining unmatched ids are flows the EF 3.1 bridge does not cover at all (noise, Thorium-232, gross calorific energy in biomass, ocean salt water, Uranium alpha, and similar), affecting 2.96% of biosphere exchange rows.
• Process id stability: for all 11 sectors the set of process_id in the new processes.parquet is identical to main, and row counts and column sets of exchanges.parquet are unchanged. The only column that differs is flow; 100% of biosphere rows were re-keyed and 0 technosphere rows changed, so technosphere links are untouched.
• scripts/validate.py (the CI schema gate) passes locally: OK, 11 sector folder(s) validate against the schema contracts.
• File size: the largest change is +5.3 KB (07-construction/exchanges.parquet, 1,525,244 to 1,530,528 bytes); several files shrank slightly. No sharding needed.

🤖 Generated with Claude Code