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/wa/counties/whitman/index.md

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

data/jurisdictions/us/states/wa/counties/whitman/municipalities/colfax/people/jim-retzer.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Jim Retzer"
+description: "Mayor, Colfax, WA"
+role: "Mayor, Colfax, WA"
+level: "municipal"
+branch: "executive"
+state: "WA"
+tenure:
+  start: "2026-06-20"
+  current: true
+ids:
+  person: "5e57b593-f881-4425-98d3-e50fb8764a8e"
+  office: "3755f117-843a-4fe5-bbed-7ab88a439abb"
+  tenure: "ad4ee6b6-f2bd-4154-bbd6-c155d8e0540d"
+  jurisdiction: "2e46f06a-2225-4bc4-9bd8-263dcacd6fa9"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, wa]
+timestamp: "2026-07-04"
+---
+
+# Jim Retzer
+
+Current Mayor, Colfax, WA.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).

data/jurisdictions/us/states/wa/counties/whitman/municipalities/palouse/people/tim-sievers.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Tim Sievers"
+description: "Mayor, Palouse, WA"
+role: "Mayor, Palouse, WA"
+level: "municipal"
+branch: "executive"
+state: "WA"
+tenure:
+  start: "2026-06-20"
+  current: true
+ids:
+  person: "6852521d-22be-40a6-a9dc-7994d9fafdd1"
+  office: "7ec324b3-3033-4f97-a235-de3a8ba9af25"
+  tenure: "bd42cc71-f45a-4e74-aa51-4df67c20e4c7"
+  jurisdiction: "359e3b80-6d37-4cdc-a8fe-f26df06b4a9e"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, wa]
+timestamp: "2026-07-04"
+---
+
+# Tim Sievers
+
+Current Mayor, Palouse, WA.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).

data/jurisdictions/us/states/wa/counties/whitman/municipalities/pullman/people/francis-a-benjamin.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Francis A. Benjamin"
+description: "Mayor, Pullman, WA"
+role: "Mayor, Pullman, WA"
+level: "municipal"
+branch: "executive"
+state: "WA"
+tenure:
+  start: "2024-01-01"
+  current: true
+ids:
+  person: "53d42834-1e8c-451c-8c4f-92e3e3a2e37b"
+  office: "06b79161-32de-4bf8-810a-e937037b3843"
+  tenure: "3e8147bb-4ad4-4fac-ace4-294d1a208f75"
+  jurisdiction: "8e04e7be-5cbf-4958-8e07-77c8216316d9"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, wa]
+timestamp: "2026-07-04"
+---
+
+# Francis A. Benjamin
+
+Current Mayor, Pullman, WA.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).