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/nc/counties/buncombe/index.md

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

data/jurisdictions/us/states/nc/counties/buncombe/municipalities/asheville/people/esther-manheimer.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Esther Manheimer"
+description: "Mayor, Asheville, NC"
+role: "Mayor, Asheville, NC"
+level: "municipal"
+branch: "executive"
+state: "NC"
+tenure:
+  start: "2009-01-01"
+  current: true
+ids:
+  person: "5803f8c4-30c1-4e36-b875-d523a7ce3aee"
+  office: "eaa446ac-5d59-4965-a063-ed4036a10888"
+  tenure: "29219515-acc9-479d-85c4-65b1b20d4c34"
+  jurisdiction: "f2926712-f767-4927-8786-f7259023a79c"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, nc]
+timestamp: "2026-07-04"
+---
+
+# Esther Manheimer
+
+Current Mayor, Asheville, NC.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).

data/jurisdictions/us/states/nc/counties/buncombe/municipalities/woodfin/people/jim-mcallister.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Jim McAllister"
+description: "Mayor, Woodfin, NC"
+role: "Mayor, Woodfin, NC"
+level: "municipal"
+branch: "executive"
+state: "NC"
+tenure:
+  start: "2023-12-19"
+  current: true
+ids:
+  person: "1359a083-f766-4fe0-bb4c-e7f56b7d882d"
+  office: "52e8b4b7-352d-4a1e-8c3e-4d4c31d8e437"
+  tenure: "094b8e10-156a-4c43-b463-8a952f0b95d0"
+  jurisdiction: "e5555d3c-9a7a-44ef-b7b5-5834655cb1b5"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, nc]
+timestamp: "2026-07-04"
+---
+
+# Jim McAllister
+
+Current Mayor, Woodfin, NC.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).