Cities: exact GEOID placement from Atlas backfill

Atlas resolved every existing municipal officeholder to its Census place
GEOID at the source (PostGIS). build.py now prefers that exact geoid over
the name-based fuzzy resolver, so filled cities land on their node exactly
rather than by 98.8% name match. Resolved 2,217 -> 2,224; dedup against the
skeleton tightened (a few fuzzy mismatches now collapse correctly).

Note: this is the GEOID *backfill*, not the *fill* — zero net-new
officeholders; the 17,286 empty skeleton cities remain empty. Nationwide
municipal officeholder acquisition is a separate, per-state source problem.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

data/jurisdictions/us/states/tx/counties/reeves/municipalities/town-of-pecos/index.md

@@ -1,20 +1,25 @@
 ---
 type: Jurisdiction
-title: "Pecos, TX"
+title: "Town of Pecos, TX"
 classification: city
+geoid: "4873493"
 state: "TX"
+counties: ["Reeves"]
 sources:
   - field: government
     source: "Atlas officeholders v3 (2026-07-04)"
+  - field: identity
+    source: "Census place GEOID (place_county_crosswalk)"
 confidence: official
 tags: [jurisdiction, city, tx]
 timestamp: "2026-07-03"
 ---
 
-# Pecos, TX
+# Town of Pecos, TX
 
 City government — 1 officeholder mapped.
 
 ## Source
 
 - government: Atlas officeholders v3 (2026-07-04)
+- identity: Census place GEOID (place_county_crosswalk)