Close the institutional gap: bodies, committees, leadership

The seat data answered 'who represents this place?' but not 'who runs
this institution?' — the Speaker of the House existed only as the rep
for LA-4. This adds the missing axis of institutional power.

New Body entities (233): the U.S. House, U.S. Senate, Executive Office,
49 committees, 181 subcommittees — each with its leadership.

Federal people (532/542) enriched with bioguide IDs, leadership roles,
and committee seats, reconciled from congress-legislators by name.
Mike Johnson is now Speaker of the House, not just LA-4.

Sources ingested directly into the repo (repo-canonical): Atlas
supplied bodies/leadership/committee_memberships via congress-legislators,
committed raw in data/. build.py supersedes convert_officeholders.py and
reads all four inputs in one deterministic pass (byte-identical on rerun).

The 10 unenriched federal records are a finding, not a bug: vacancies,
the President, and ~5 seats where Atlas's roster disagrees with the
authoritative current roster — model-vs-reality discrepancies to surface.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

data/jurisdictions/us/people/dusty-johnson.md

@@ -8,6 +8,31 @@ level: "federal"
 branch: "legislative"
 state: "SD"
 district: "Congressional District (at Large)"
+committees:
+  - name: "House Committee on Agriculture"
+    role: "member"
+    body: "us/bodies/house/committees/agriculture"
+  - name: "House Committee on Agriculture - Commodity Markets, Digital Assets, and Rural Development"
+    role: "chair"
+    body: "us/bodies/house/committees/agriculture/subcommittees/commodity-markets-digital-assets-and-rural-development"
+  - name: "House Committee on Agriculture - General Farm Commodities, Risk Management, and Credit"
+    role: "member"
+    body: "us/bodies/house/committees/agriculture/subcommittees/general-farm-commodities-risk-management-and-credit"
+  - name: "House Select Committee on the Strategic Competition Between the United States and the Chinese Communist Party"
+    role: "member"
+    body: "us/bodies/house/committees/house-select-committee-on-the-strategic-competition-between-the-united-states-and-the-chinese-communist-party"
+  - name: "House Committee on Transportation and Infrastructure"
+    role: "member"
+    body: "us/bodies/house/committees/transportation-and-infrastructure"
+  - name: "House Committee on Transportation and Infrastructure - Aviation"
+    role: "member"
+    body: "us/bodies/house/committees/transportation-and-infrastructure/subcommittees/aviation"
+  - name: "House Committee on Transportation and Infrastructure - Highways and Transit"
+    role: "member"
+    body: "us/bodies/house/committees/transportation-and-infrastructure/subcommittees/highways-and-transit"
+  - name: "House Committee on Transportation and Infrastructure - Railroads, Pipelines, and Hazardous Materials"
+    role: "member"
+    body: "us/bodies/house/committees/transportation-and-infrastructure/subcommittees/railroads-pipelines-and-hazardous-materials"
 tenure:
   start: "2025-01-03"
   current: true
@@ -20,11 +45,14 @@ ids:
   office: "623ff6a4-3afd-4360-8925-2e1538a3a5a3"
   tenure: "b2d32492-eab4-4a76-93ed-f69346ac4684"
   jurisdiction: "febbf363-32ad-4794-9f8d-51cbde4b84b7"
+  bioguide: "J000301"
 sources:
   - field: tenure
     source: "House Clerk XML 2026-06-10"
   - field: jurisdiction
     source: "Census 119th CD 500k"
+  - field: roles
+    source: "congress-legislators (unitedstates project)"
 confidence: official
 tags: [officeholder, federal, legislative, sd]
 timestamp: "2026-06-20"
@@ -34,9 +62,21 @@ timestamp: "2026-06-20"
 
 Current U.S. House of Representatives - SD At-Large (Congressional District (at Large)).
 
+## Committees
+
+- [House Committee on Agriculture](/us/bodies/house/committees/agriculture.md)
+- [House Committee on Agriculture - Commodity Markets, Digital Assets, and Rural Development](/us/bodies/house/committees/agriculture/subcommittees/commodity-markets-digital-assets-and-rural-development.md) — **chair**
+- [House Committee on Agriculture - General Farm Commodities, Risk Management, and Credit](/us/bodies/house/committees/agriculture/subcommittees/general-farm-commodities-risk-management-and-credit.md)
+- [House Select Committee on the Strategic Competition Between the United States and the Chinese Communist Party](/us/bodies/house/committees/house-select-committee-on-the-strategic-competition-between-the-united-states-and-the-chinese-communist-party.md)
+- [House Committee on Transportation and Infrastructure](/us/bodies/house/committees/transportation-and-infrastructure.md)
+- [House Committee on Transportation and Infrastructure - Aviation](/us/bodies/house/committees/transportation-and-infrastructure/subcommittees/aviation.md)
+- [House Committee on Transportation and Infrastructure - Highways and Transit](/us/bodies/house/committees/transportation-and-infrastructure/subcommittees/highways-and-transit.md)
+- [House Committee on Transportation and Infrastructure - Railroads, Pipelines, and Hazardous Materials](/us/bodies/house/committees/transportation-and-infrastructure/subcommittees/railroads-pipelines-and-hazardous-materials.md)
+
 ## Sources
 
 - tenure: House Clerk XML 2026-06-10
 - jurisdiction: Census 119th CD 500k
+- roles: congress-legislators (unitedstates project)
 
 Generated from the Atlas officeholders v2 export (2026-06-20).