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/bodies/house/committees/ethics.md

@@ -0,0 +1,33 @@
+---
+type: Body
+title: "House Committee on Ethics"
+classification: "committee"
+chamber: "house"
+code: "HSSO"
+leadership:
+  - person: "Michael Guest"
+    role: "chair"
+  - person: "Mark DeSaulnier"
+    role: "ranking-member"
+sources:
+  - field: definition
+    source: congress-legislators (unitedstates project)
+confidence: official
+tags: [body, committee, house]
+timestamp: "2026-07-03"
+---
+
+# House Committee on Ethics
+
+Committee (house).
+
+## Leadership
+
+- chair: Michael Guest
+- ranking-member: Mark DeSaulnier
+
+10 members (see each member's file for their seat on this body).
+
+## Source
+
+- definition: congress-legislators (unitedstates project)