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/alamance/index.md

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

data/jurisdictions/us/states/nc/counties/alamance/municipalities/burlington/people/james-b-butler.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "James B. Butler"
+description: "Mayor, Burlington, NC"
+role: "Mayor, Burlington, NC"
+level: "municipal"
+branch: "executive"
+state: "NC"
+tenure:
+  start: "2021-12-08"
+  current: true
+ids:
+  person: "b6567431-4824-43d1-9fdd-30330cada59b"
+  office: "0179ef1c-f9a4-47bb-986a-09e17626a068"
+  tenure: "3136b7b6-bf76-490d-bd2c-01f9e067d0cd"
+  jurisdiction: "a12407fd-958a-4e91-aeff-a9f2f1e55f34"
+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"
+---
+
+# James B. Butler
+
+Current Mayor, Burlington, 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/alamance/municipalities/graham/people/jennifer-talley.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Jennifer Talley"
+description: "Mayor, Graham, NC"
+role: "Mayor, Graham, NC"
+level: "municipal"
+branch: "executive"
+state: "NC"
+tenure:
+  start: "2021-12-14"
+  current: true
+ids:
+  person: "066bfb09-6a93-4f4c-b869-776acc094eda"
+  office: "e1a492eb-cf37-4e3e-8cf8-5d4b2645d934"
+  tenure: "78542c94-6060-4eff-88ef-0af83cb7330c"
+  jurisdiction: "63105b41-6246-467e-969f-4d8c2f14fda3"
+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"
+---
+
+# Jennifer Talley
+
+Current Mayor, Graham, 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/alamance/municipalities/mebane/people/ed-hooks.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Ed Hooks"
+description: "Mayor, Mebane, NC"
+role: "Mayor, Mebane, NC"
+level: "municipal"
+branch: "executive"
+state: "NC"
+tenure:
+  start: "2026-06-20"
+  current: true
+ids:
+  person: "1b1f8031-e822-459c-b9a7-1748f7a9658a"
+  office: "6bcdc3fd-a85e-4127-b089-ed1ad9ce0d97"
+  tenure: "86bee693-7324-4a07-be11-12ddddef6faa"
+  jurisdiction: "fff7d144-829f-49fb-b3f4-8b1cbe330eea"
+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"
+---
+
+# Ed Hooks
+
+Current Mayor, Mebane, NC.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).