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/transportation-and-infrastructure/subcommittees/aviation.md

@@ -0,0 +1,34 @@
+---
+type: Body
+title: "House Committee on Transportation and Infrastructure - Aviation"
+classification: "subcommittee"
+chamber: "house"
+code: "HSPW05"
+parent: "us/bodies/house/committees/transportation-and-infrastructure"
+leadership:
+  - person: "Troy E. Nehls"
+    role: "chair"
+  - person: "André Carson"
+    role: "ranking-member"
+sources:
+  - field: definition
+    source: congress-legislators (unitedstates project)
+confidence: official
+tags: [body, subcommittee, house]
+timestamp: "2026-07-03"
+---
+
+# House Committee on Transportation and Infrastructure - Aviation
+
+Subcommittee (house).
+
+## Leadership
+
+- chair: Troy E. Nehls
+- ranking-member: André Carson
+
+39 members (see each member's file for their seat on this body).
+
+## Source
+
+- definition: congress-legislators (unitedstates project)

data/jurisdictions/us/bodies/house/committees/transportation-and-infrastructure/subcommittees/coast-guard-and-maritime-transportation.md

@@ -0,0 +1,34 @@
+---
+type: Body
+title: "House Committee on Transportation and Infrastructure - Coast Guard and Maritime Transportation"
+classification: "subcommittee"
+chamber: "house"
+code: "HSPW07"
+parent: "us/bodies/house/committees/transportation-and-infrastructure"
+leadership:
+  - person: "Mike Ezell"
+    role: "chair"
+  - person: "Salud O. Carbajal"
+    role: "ranking-member"
+sources:
+  - field: definition
+    source: congress-legislators (unitedstates project)
+confidence: official
+tags: [body, subcommittee, house]
+timestamp: "2026-07-03"
+---
+
+# House Committee on Transportation and Infrastructure - Coast Guard and Maritime Transportation
+
+Subcommittee (house).
+
+## Leadership
+
+- chair: Mike Ezell
+- ranking-member: Salud O. Carbajal
+
+13 members (see each member's file for their seat on this body).
+
+## Source
+
+- definition: congress-legislators (unitedstates project)

data/jurisdictions/us/bodies/house/committees/transportation-and-infrastructure/subcommittees/economic-development-public-buildings-and-emergency-management.md

@@ -0,0 +1,34 @@
+---
+type: Body
+title: "House Committee on Transportation and Infrastructure - Economic Development, Public Buildings, and Emergency Management"
+classification: "subcommittee"
+chamber: "house"
+code: "HSPW13"
+parent: "us/bodies/house/committees/transportation-and-infrastructure"
+leadership:
+  - person: "Scott Perry"
+    role: "chair"
+  - person: "Greg Stanton"
+    role: "ranking-member"
+sources:
+  - field: definition
+    source: congress-legislators (unitedstates project)
+confidence: official
+tags: [body, subcommittee, house]
+timestamp: "2026-07-03"
+---
+
+# House Committee on Transportation and Infrastructure - Economic Development, Public Buildings, and Emergency Management
+
+Subcommittee (house).
+
+## Leadership
+
+- chair: Scott Perry
+- ranking-member: Greg Stanton
+
+14 members (see each member's file for their seat on this body).
+
+## Source
+
+- definition: congress-legislators (unitedstates project)

data/jurisdictions/us/bodies/house/committees/transportation-and-infrastructure/subcommittees/highways-and-transit.md

@@ -0,0 +1,34 @@
+---
+type: Body
+title: "House Committee on Transportation and Infrastructure - Highways and Transit"
+classification: "subcommittee"
+chamber: "house"
+code: "HSPW12"
+parent: "us/bodies/house/committees/transportation-and-infrastructure"
+leadership:
+  - person: "David Rouzer"
+    role: "chair"
+  - person: "Eleanor Holmes Norton"
+    role: "ranking-member"
+sources:
+  - field: definition
+    source: congress-legislators (unitedstates project)
+confidence: official
+tags: [body, subcommittee, house]
+timestamp: "2026-07-03"
+---
+
+# House Committee on Transportation and Infrastructure - Highways and Transit
+
+Subcommittee (house).
+
+## Leadership
+
+- chair: David Rouzer
+- ranking-member: Eleanor Holmes Norton
+
+51 members (see each member's file for their seat on this body).
+
+## Source
+
+- definition: congress-legislators (unitedstates project)

data/jurisdictions/us/bodies/house/committees/transportation-and-infrastructure/subcommittees/railroads-pipelines-and-hazardous-materials.md

@@ -0,0 +1,34 @@
+---
+type: Body
+title: "House Committee on Transportation and Infrastructure - Railroads, Pipelines, and Hazardous Materials"
+classification: "subcommittee"
+chamber: "house"
+code: "HSPW14"
+parent: "us/bodies/house/committees/transportation-and-infrastructure"
+leadership:
+  - person: "Daniel Webster"
+    role: "chair"
+  - person: "Dina Titus"
+    role: "ranking-member"
+sources:
+  - field: definition
+    source: congress-legislators (unitedstates project)
+confidence: official
+tags: [body, subcommittee, house]
+timestamp: "2026-07-03"
+---
+
+# House Committee on Transportation and Infrastructure - Railroads, Pipelines, and Hazardous Materials
+
+Subcommittee (house).
+
+## Leadership
+
+- chair: Daniel Webster
+- ranking-member: Dina Titus
+
+30 members (see each member's file for their seat on this body).
+
+## Source
+
+- definition: congress-legislators (unitedstates project)

data/jurisdictions/us/bodies/house/committees/transportation-and-infrastructure/subcommittees/water-resources-and-environment.md

@@ -0,0 +1,34 @@
+---
+type: Body
+title: "House Committee on Transportation and Infrastructure - Water Resources and Environment"
+classification: "subcommittee"
+chamber: "house"
+code: "HSPW02"
+parent: "us/bodies/house/committees/transportation-and-infrastructure"
+leadership:
+  - person: "Mike Collins"
+    role: "chair"
+  - person: "Frederica S. Wilson"
+    role: "ranking-member"
+sources:
+  - field: definition
+    source: congress-legislators (unitedstates project)
+confidence: official
+tags: [body, subcommittee, house]
+timestamp: "2026-07-03"
+---
+
+# House Committee on Transportation and Infrastructure - Water Resources and Environment
+
+Subcommittee (house).
+
+## Leadership
+
+- chair: Mike Collins
+- ranking-member: Frederica S. Wilson
+
+31 members (see each member's file for their seat on this body).
+
+## Source
+
+- definition: congress-legislators (unitedstates project)