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/sarah-mcbride.md

@@ -8,6 +8,22 @@ level: "federal"
 branch: "legislative"
 state: "DE"
 district: "Congressional District (at Large)"
+committees:
+  - name: "House Committee on Foreign Affairs"
+    role: "member"
+    body: "us/bodies/house/committees/foreign-affairs"
+  - name: "House Committee on Foreign Affairs - Europe"
+    role: "member"
+    body: "us/bodies/house/committees/foreign-affairs/subcommittees/europe"
+  - name: "House Committee on Foreign Affairs - Oversight and Intelligence"
+    role: "member"
+    body: "us/bodies/house/committees/foreign-affairs/subcommittees/oversight-and-intelligence"
+  - name: "House Committee on Science, Space, and Technology"
+    role: "member"
+    body: "us/bodies/house/committees/science-space-and-technology"
+  - name: "House Committee on Science, Space, and Technology - Research and Technology"
+    role: "member"
+    body: "us/bodies/house/committees/science-space-and-technology/subcommittees/research-and-technology"
 tenure:
   start: "2025-01-03"
   current: true
@@ -20,11 +36,14 @@ ids:
   office: "f4ddaff7-9c3b-4d68-868a-b4a5288e597d"
   tenure: "6594718c-48b4-4263-a992-a7a18483258d"
   jurisdiction: "9317a20d-16b6-43cd-9c28-6d754f88a75d"
+  bioguide: "M001238"
 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, de]
 timestamp: "2026-06-20"
@@ -34,9 +53,18 @@ timestamp: "2026-06-20"
 
 Current U.S. House of Representatives - DE At-Large (Congressional District (at Large)).
 
+## Committees
+
+- [House Committee on Foreign Affairs](/us/bodies/house/committees/foreign-affairs.md)
+- [House Committee on Foreign Affairs - Europe](/us/bodies/house/committees/foreign-affairs/subcommittees/europe.md)
+- [House Committee on Foreign Affairs - Oversight and Intelligence](/us/bodies/house/committees/foreign-affairs/subcommittees/oversight-and-intelligence.md)
+- [House Committee on Science, Space, and Technology](/us/bodies/house/committees/science-space-and-technology.md)
+- [House Committee on Science, Space, and Technology - Research and Technology](/us/bodies/house/committees/science-space-and-technology/subcommittees/research-and-technology.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).