test(tdx-hydro): record 2020003440 topology determination

[CooperBigFoot]

Summary

• record the measured refuses_before_target determination for processing basin 2020003440, where topology construction refuses at LINKNO 817894 -> DSLINKNO 819270
• retain focused regression coverage for the recorded refusal
• commit an independent reconstruction of the raising-loop traversal from the acquired sources

The recorded adapter measurement is a ValueError refusal at edge 817894 -> 819270. It records target edge 148956 -> 399388 as untested because topology
construction refused before that edge was evaluated. An independent
reconstruction corroborates this ordering under production's FIFO tie-breaking:
the refusal is at connected-edge traversal position 556, with 555 connected
edges before it, and the target is at position 227297, strictly later. The three
quantities are reconstruction outputs, not adapter measurements.

The recorded ingestion fields are consistency checks that can be reproduced without running the adapter in 149.6 seconds. They are not proof that the adapter ran. The independent committed reconstruction supplies separate corroboration for the traversal ordering.

This change claims no correction, no verdict, and no falsification of the published adapter strictness verdict in seven-basin-verdicts.json.

Verification

• cargo fmt --check
• cargo clippy --workspace --all-targets -- -D warnings
• cargo check --workspace --all-targets
• cargo test --workspace
• cargo build --workspace
• HFX_BINARY="$(pwd -P)/target/debug/hfx" uv run --project adapters/tdx-hydro python adapters/tdx-hydro/test_build_adapter.py