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/hakeem-s-jeffries.md

@@ -8,6 +8,10 @@ level: "federal"
 branch: "legislative"
 state: "NY"
 district: "Congressional District 8"
+leadership:
+  - role: "House Minority Leader"
+    body: "H"
+    since: "2025-01-03"
 tenure:
   start: "2025-01-03"
   current: true
@@ -20,11 +24,14 @@ ids:
   office: "5c8e2c20-b2f1-4b67-a929-e9bc00db296e"
   tenure: "b96fff5d-680f-451a-a60c-bbf300754766"
   jurisdiction: "88d703c9-ca67-4e7f-bafd-5ec6411f8239"
+  bioguide: "J000294"
 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, ny]
 timestamp: "2026-06-20"
@@ -34,9 +41,14 @@ timestamp: "2026-06-20"
 
 Current U.S. House of Representatives - NY-8 (Congressional District 8).
 
+## Leadership
+
+- House Minority Leader (since 2025-01-03)
+
 ## 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).