de:wasserversorger-discover

Run complete: population coverage moved from 99.53% to 99.70% (residual 438→384 municipalities, 393.6k→248.6k people), roster grew from 3110 to 3142 companies via a 60-unit singleton batch split across two synchronous subagents, fully merged and validated with zero accidental duplicate mints.

Journal entry appended with full detail for the next run — 362 singletons remain (largest ~5.1k), the 10-unit multi-member pool stays on hold pending a human decision, domain-collision backlog is now 28 (one new legitimate shared-domain case, documented), and resolve_singleton.mjs's broken pre-pass dependency is flagged again as worth an actual fix.

Followed the skill's synchronous-shard protocol throughout. Read CLAUDE.md and journal tail first, then SKILL.md in full (the "STOP" banner and phase-2b sections, since we're deep in that phase).

State on entry: 3110 roster companies, 99.53% population coverage (10505/438 claimed/residual municipalities), multi-member pool unchanged at 10 units/22 municipalities (still on hold pending the overdue human decision — left untouched again this run, correctly). resolve_singleton.mjs re-confirmed still broken (ENOENT on the absent _tasks/netzbetreiber-contact/german-water/ directory) — skipped the pre-pass and went straight to WebSearch/WebFetch per the skill's phase-2b fallback, as prior runs have done.

Batch build: ran coverage.mjs and build_gv_layer.mjs fresh (matched journal exactly, no drift), then deleted the on-disk batch60-input.json and regenerated it via build_batch60.mjs rather than trusting a leftover — per the skill's standing warning about stale batch files. Produced 60 singleton units, largest Schelklingen (6,616) down to Krün. Split 30/30 into batch60-shardA-20260901-0300.json / batch60-shardB-20260901-0300.json (dated shard names per the 2026-09-01 00:00 entry's fix for the HHMM-collision bug). Company-id ranges wv-de-19613–19662 (shard A) / wv-de-19663–19712 (shard B) — generous non-overlapping headroom off the max in-use id (19612), so mint-count wouldn't matter for collision safety.

Dispatch: two synchronous general-purpose Agent subagents in one message, both run_in_background: false, both carrying the mandatory no-Agent/Task-tool line verbatim. Both completed inline within this turn (durations ~964s / ~884s) — neither recursed into background sub-subagents.

Shard A (30 units): 15 new mints (wv-de-19613–19627), 9 reused existing companies, 6 honest unresolved (Talheim, Sauldorf, Wartmannsroth, Rosenthal am Rennsteig, Erlau, Reinsberg — Erlau and Reinsberg carried over as already-flagged-hard from two prior runs, still unresolved after further checking). Caught two namesake traps before they became wrong data: rosenthaler.de is a different Rosenthal (Hessen, not the Thüringen target) and reinsberg.gv.at is Reinsberg, Austria, not Reinsberg/Sachsen. Disambiguated two Bavarian namesake pairs (Auerbach, Rieden) via AGS Regierungsbezirk/Landkreis prefix before accepting any match. Found and correctly did not merge a legitimate shared-domain case: stadtwerke-burglengenfeld.de now also serves new wv-de-19627 (Zweckverband Vils-Naab-Gruppe) alongside existing wv-de-3921 (Stadtwerke Burglengenfeld's own AöR) — verified as the same operator running both, documented in both records per the "never auto-merge on a domain collision" rule rather than picked one.

Shard B (30 units): 17 new mints (wv-de-19663–19679), 9 reused existing companies, 0 unresolved this shard (all 30 got a link row, several at low/medium confidence with honest notes rather than false certainty). 3 of the 17 new mints are pending_domain (Zweckverband Albwasserversorgungsgruppe III, Zweckverband Vordere Albgruppe, Wasserversorgung Bauland GmbH — no discoverable own website, marked per the skill's convention rather than left blank). Positively ruled out a lead rather than silently dropping it: checked Chamer Gruppe's own member list and confirmed Zandt is not a member. Caught a dissolved-Verband case (Ammerthal: former Zweckverband wound up after Amberg's exit, Gemeinde now runs supply via its own Bauhof) and two intra-unit carve-outs recorded as such rather than flattened (Kirchensittenbach: own network + Riegelsteingruppe + HEWA GmbH for one Ortsteil; Helbedündorf: TAZ Helbe-Wipper for 5 Ortsteile, separate Verband "Ost-Obereichsfeld" for Keula/Holzthaleben).

Validation before merge: both shards well-formed JSONL (0 bad lines), all 60 assigned AGS present exactly once across the combined shard links (54 resolved + 6 explicit unresolved). Cross-shard + full-roster domain-collision recheck (eTLD+1, across every roster.part-*.jsonl + roster.jsonl) run before consolidate_roster.mjs per the skill's mandatory last step: 28 collisions (up from the last-reported 27) — traced the delta to exactly one new, legitimate, already-documented case (the Burglengenfeld one above); the other 27 are the standing pre-existing set, unchanged. 0 accidental duplicate mints from either shard.

Merge: map_roster.mjs: needs-review queue unchanged at 1231 (AGS-seeded rows don't feed it, as expected). consolidate_roster.mjs: 3110 → 3142 distinct companies (+32 = 15+17, exact). coverage.mjs: municipalities claimed 10505 → 10559 (+54, exact — 6 of 60 stayed unresolved). Population 99.53% → 99.70% (+0.17pp), residual 438 → 384 municipalities / 393.6k → 248.6k people. build_gv_layer.mjs: multi-member pool unchanged at 10 units/22 municipalities (still on hold), singletons 416 → 362 (-54, exact).

Crossed 99.7% population coverage.

For next run: continue singleton batches by residual_population descending — 362 singletons remain, largest now Talheim (~5.1k). The 10-unit/22-municipality multi-member pool remains on hold pending the overdue human decision — do not spend a run on it without new information. Standing domain-collision backlog now 28 (eTLD+1, was 27) — one new legitimate case this run (documented above), still awaiting the overdue human consolidation pass, along with the 6 standing duplicate-mint name pairs, the St. Peter/St. Märgen AGS-swap, and the wv-de-10532 hq_ags mismatch flagged in earlier entries (none touched this run). resolve_singleton.mjs's hard ENOENT dependency on the absent _tasks/netzbetreiber-contact/german-water/ directory is still unfixed and the pre-pass is still being skipped every run as a result — now flagged in three consecutive runs, worth an actual fix (even a try/catch fallback) if a future run has slack, rather than re-discovering the same broken pre-pass each time. _tasks/netzbetreiber-contact/german-water/ remains absent from this checkout (noted every run, out of scope for discovery).