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/columbiana/index.md

@@ -32,7 +32,7 @@ timestamp: "2026-07-03"
 
 # Columbiana County, OH
 
-County jurisdiction.
+County jurisdiction — 3 officeholders mapped.
 
 ## Demographics (ACS 2023)
 

data/jurisdictions/us/states/oh/counties/columbiana/municipalities/columbiana/people/rick-noel.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Rick Noel"
+description: "Mayor, Columbiana, OH"
+role: "Mayor, Columbiana, OH"
+level: "municipal"
+branch: "executive"
+state: "OH"
+tenure:
+  start: "2026-06-20"
+  current: true
+ids:
+  person: "a39ffcf4-c347-4256-ad48-7cfd1a926c14"
+  office: "279ef983-d3c3-497f-a491-53e618dd3bd7"
+  tenure: "15bcb0c6-0c62-4fbb-9c0c-f2b687ea4166"
+  jurisdiction: "2c448342-a42d-40e2-93c3-95211ce412ce"
+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"
+---
+
+# Rick Noel
+
+Current Mayor, Columbiana, 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/columbiana/municipalities/east-liverpool/people/robert-j-smith.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Robert J. Smith"
+description: "Mayor, East Liverpool, OH"
+role: "Mayor, East Liverpool, OH"
+level: "municipal"
+branch: "executive"
+state: "OH"
+tenure:
+  start: "2026-06-20"
+  current: true
+ids:
+  person: "d08d9334-c37f-4bbc-a84c-41826cf400e0"
+  office: "8a31d337-beae-4607-9e36-d218e1b3cdb7"
+  tenure: "559a13f4-09b2-47d8-a03f-28864ac181e5"
+  jurisdiction: "954c063a-b2dd-45fc-80a4-6d3d7a9bcef3"
+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"
+---
+
+# Robert J. Smith
+
+Current Mayor, East Liverpool, 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/columbiana/municipalities/salem/people/cyndi-baronzzi-dickey.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Cyndi Baronzzi Dickey"
+description: "Mayor, Salem, OH"
+role: "Mayor, Salem, OH"
+level: "municipal"
+branch: "executive"
+state: "OH"
+tenure:
+  start: "2023-11-07"
+  current: true
+ids:
+  person: "442c5778-190c-4a70-a769-287a384673ed"
+  office: "9b66e15e-a5d9-4507-bb9f-8a9d2f82e329"
+  tenure: "4f7ad598-540a-49fa-92aa-43ad74b54aa1"
+  jurisdiction: "e07faa41-6250-468c-882f-3142cf999863"
+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"
+---
+
+# Cyndi Baronzzi Dickey
+
+Current Mayor, Salem, OH.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).