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/ky/counties/whitley/index.md

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

data/jurisdictions/us/states/ky/counties/whitley/municipalities/corbin/people/suzie-razmus.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Suzie Razmus"
+description: "Mayor, Corbin, KY"
+role: "Mayor, Corbin, KY"
+level: "municipal"
+branch: "executive"
+state: "KY"
+tenure:
+  start: "2026-06-20"
+  current: true
+ids:
+  person: "ddd4daea-53d5-4f48-b0f9-aa266efa340e"
+  office: "a543554e-5fcb-4cd2-a341-2845040c11d8"
+  tenure: "e98f2898-b3af-4761-a2cb-0395e37c0f95"
+  jurisdiction: "081d8a75-0eb1-4e39-8f3e-63c5b0688a0b"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, ky]
+timestamp: "2026-07-04"
+---
+
+# Suzie Razmus
+
+Current Mayor, Corbin, KY.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).

data/jurisdictions/us/states/ky/counties/whitley/municipalities/williamsburg/people/roddy-harrison.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Roddy Harrison"
+description: "Mayor, Williamsburg, KY"
+role: "Mayor, Williamsburg, KY"
+level: "municipal"
+branch: "executive"
+state: "KY"
+tenure:
+  start: "2026-06-20"
+  current: true
+ids:
+  person: "18bb8f55-6b3b-42af-9f35-d72c1ba7e998"
+  office: "46511a1c-97c1-4af2-beed-b9648b386473"
+  tenure: "35402a48-595b-4000-87bb-d113527b4b1a"
+  jurisdiction: "7a481e46-d332-4b86-b3b7-2868d1872048"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, ky]
+timestamp: "2026-07-04"
+---
+
+# Roddy Harrison
+
+Current Mayor, Williamsburg, KY.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).