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/tx/counties/smith/index.md

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

data/jurisdictions/us/states/tx/counties/smith/municipalities/lindale/people/jeff-daugherty.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Jeff Daugherty"
+description: "Mayor, Lindale, TX"
+role: "Mayor, Lindale, TX"
+level: "municipal"
+branch: "executive"
+state: "TX"
+tenure:
+  start: "2016-01-01"
+  current: true
+ids:
+  person: "e8cd3e4b-92f5-407c-abad-51e85ec038de"
+  office: "80136b0d-b952-461a-948f-c0454c151b1f"
+  tenure: "6b63cf41-a348-4323-b8d7-5ff266048e8b"
+  jurisdiction: "42c8f43d-ce2e-4351-b421-f4cc80c0dcea"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, tx]
+timestamp: "2026-07-04"
+---
+
+# Jeff Daugherty
+
+Current Mayor, Lindale, TX.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).

data/jurisdictions/us/states/tx/counties/smith/municipalities/tyler/people/don-warren.md

@@ -0,0 +1,39 @@
+---
+type: Person
+title: "Don Warren"
+description: "Mayor, Tyler, TX"
+role: "Mayor, Tyler, TX"
+level: "municipal"
+branch: "executive"
+state: "TX"
+tenure:
+  start: "2020-01-01"
+  current: true
+ids:
+  person: "ab11134d-c29e-4561-b0e3-2b9a6ff7a55c"
+  office: "037cadad-e9cf-4be2-99d9-aef88dc64101"
+  tenure: "f7d4e041-9e29-4870-bc43-03f87f0422f8"
+  jurisdiction: "0dead681-19d4-4c0d-89bd-02b3b8f97642"
+sources:
+  - field: office
+    source: "Wikidata"
+  - field: tenure
+    source: "Wikidata"
+  - field: jurisdiction
+    source: "Census TIGER 2024"
+confidence: official
+tags: [officeholder, municipal, executive, tx]
+timestamp: "2026-07-04"
+---
+
+# Don Warren
+
+Current Mayor, Tyler, TX.
+
+## Sources
+
+- office: Wikidata
+- tenure: Wikidata
+- jurisdiction: Census TIGER 2024
+
+Generated from the Atlas officeholders v3 export (2026-07-04).