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/ok/counties/cleveland/index.md

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

data/jurisdictions/us/states/ok/counties/cleveland/municipalities/moore/people/glenn-lewis.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Glenn Lewis"
+description: "Mayor, Moore, OK"
+role: "Mayor, Moore, OK"
+level: "municipal"
+branch: "executive"
+state: "OK"
+tenure:
+  start: "2026-06-20"
+  current: true
+ids:
+  person: "49b9766d-a211-4b97-9658-38f891f0d9d3"
+  office: "df728556-5f22-4e8f-b3b1-e5401403d485"
+  tenure: "0e0a7f29-6552-43d0-a990-fe4fbe810088"
+  jurisdiction: "c3d614f8-0050-4ec2-adab-10958b6d4d1a"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, ok]
+timestamp: "2026-07-04"
+---
+
+# Glenn Lewis
+
+Current Mayor, Moore, OK.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).

data/jurisdictions/us/states/ok/counties/cleveland/municipalities/norman/people/larry-heikkila.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Larry Heikkila"
+description: "Mayor, Norman, OK"
+role: "Mayor, Norman, OK"
+level: "municipal"
+branch: "executive"
+state: "OK"
+tenure:
+  start: "2022-01-01"
+  current: true
+ids:
+  person: "0903035c-5e43-42c8-8ae1-1da81d490d4c"
+  office: "f223a897-5582-4f53-b142-aefe89cd579a"
+  tenure: "d4231c46-e98d-47d0-94ba-a1461f64b134"
+  jurisdiction: "e3eb7b3a-b796-4a3b-a753-be6830252acc"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, ok]
+timestamp: "2026-07-04"
+---
+
+# Larry Heikkila
+
+Current Mayor, Norman, OK.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).