Municipals: nest 1,823 city officeholders under their real counties

Pull Atlas's place→county crosswalk (Census TIGER 2024 places × county
geometries, 32,041 places) into the build as a committed raw input, and
use it to resolve municipal officeholders whose county was unknown.

- data/place_county_crosswalk.jsonl — new raw input (place_geoid → county_geoid)
- build.py — place-name+state → county_geoid → ACS county slug as a fallback
  in county_slug(); city_slug() generalized to non-FL bare place labels
- data/sources/sources.yaml — provenance entry for the crosswalk

_unresolved municipals: 1919 → 58. The remainder are genuine: CT planning
regions (post-county), county-level rows mislabeled municipal upstream,
consolidated city-counties (null label), Wikidata-QID placeholder names,
and ambiguous same-name places — left unresolved rather than guessed.

Join key is county_geoid (5-digit FIPS); the directory slug is taken from
the ACS county node so municipals nest under the exact existing county dir.
Deterministic (byte-identical rebuild); validate.py passes 19,721 records.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

data/jurisdictions/us/states/oh/counties/auglaize/index.md

@@ -32,7 +32,7 @@ timestamp: "2026-07-03"
 
 # Auglaize County, OH
 
-County jurisdiction.
+County jurisdiction — 2 officeholders mapped.
 
 ## Demographics (ACS 2023)
 

data/jurisdictions/us/states/oh/counties/auglaize/municipalities/st-marys/people/joseph-hurlburt-jr.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Joseph Hurlburt Jr."
+description: "Mayor, St. Marys, OH"
+role: "Mayor, St. Marys, OH"
+level: "municipal"
+branch: "executive"
+state: "OH"
+tenure:
+  start: "2026-06-20"
+  current: true
+ids:
+  person: "06216d31-b186-469a-98fb-25f6acaa5e00"
+  office: "3754d5e2-cd30-4c63-9e3f-45bf321253e2"
+  tenure: "24a94d26-5fe8-4992-845f-3b6557f5d486"
+  jurisdiction: "04419f41-f670-4fa9-ac68-8eec1c920055"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, oh]
+timestamp: "2026-07-04"
+---
+
+# Joseph Hurlburt Jr.
+
+Current Mayor, St. Marys, OH.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).

data/jurisdictions/us/states/oh/counties/auglaize/municipalities/wapakoneta/people/dan-lee.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Dan Lee"
+description: "Mayor, Wapakoneta, OH"
+role: "Mayor, Wapakoneta, OH"
+level: "municipal"
+branch: "executive"
+state: "OH"
+tenure:
+  start: "2023-12-30"
+  current: true
+ids:
+  person: "4224b648-09f2-4a74-88b8-71a41938392c"
+  office: "d05aec51-40de-4cf2-83ef-0b133475c4eb"
+  tenure: "369ac7d8-d007-420e-9c8d-4600a6a769f9"
+  jurisdiction: "0df58808-89b7-4c6c-b0f7-eb43347c9028"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, oh]
+timestamp: "2026-07-04"
+---
+
+# Dan Lee
+
+Current Mayor, Wapakoneta, OH.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).