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/or/counties/washington/index.md

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

data/jurisdictions/us/states/or/counties/washington/municipalities/beaverton/people/lacey-beaty.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Lacey Beaty"
+description: "Mayor, Beaverton, OR"
+role: "Mayor, Beaverton, OR"
+level: "municipal"
+branch: "executive"
+state: "OR"
+tenure:
+  start: "2021-01-01"
+  current: true
+ids:
+  person: "ff9b1f3d-4d57-46dd-b759-91f5b1158f8a"
+  office: "cee63fc4-a2dd-4280-9ed9-bdf948cfaa54"
+  tenure: "f210e15a-1a17-4d5b-8106-846f1883ffc9"
+  jurisdiction: "786c52a4-ce44-4ec2-94a8-358d2ac54095"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, or]
+timestamp: "2026-07-04"
+---
+
+# Lacey Beaty
+
+Current Mayor, Beaverton, OR.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).

data/jurisdictions/us/states/or/counties/washington/municipalities/hillsboro/people/beach-pace.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Beach Pace"
+description: "Mayor, Hillsboro, OR"
+role: "Mayor, Hillsboro, OR"
+level: "municipal"
+branch: "executive"
+state: "OR"
+tenure:
+  start: "2025-01-07"
+  current: true
+ids:
+  person: "ef10f0c7-4b2a-48f8-af56-9c2ee8476804"
+  office: "e13281e0-4ecb-48bd-9441-a781ea8f7d48"
+  tenure: "445009a1-ff7e-48e3-9bdb-2865132ccf82"
+  jurisdiction: "00737fab-e85a-4807-9409-3d60b1ee83c4"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, or]
+timestamp: "2026-07-04"
+---
+
+# Beach Pace
+
+Current Mayor, Hillsboro, OR.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).