feat(vehicles): request holder_count and order_winner_count in the default vehicle shapes

CHANGELOG.md

@@ -7,6 +7,16 @@ This project follows [Semantic Versioning](https://semver.org/).
 
 ## [Unreleased]
 
+### `makegov-tango`
+
+#### Added
+
+- **Vehicle company counts** (Tango API 5.8.0): `SHAPE_VEHICLES_MINIMAL` and `SHAPE_VEHICLES_COMPREHENSIVE` now request `holder_count` (distinct companies holding one of the vehicle's IDVs) and `order_winner_count` (distinct companies that have won a task order under it), next to `awardee_count`.
+
+#### Deprecated
+
+- **`awardee_count` on vehicles** is deprecated by the Tango API as an alias of `order_winner_count`, and is removed at the API's next major version. The vehicle shapes still request it so existing readers keep working; read `order_winner_count` instead.
+
 ## [0.2.0] — 2026-09-23
 
 Pre-1.0 (SemVer 0.x): the removals under **Breaking** ship without a deprecation cycle.

crates/tango/src/shapes.rs

@@ -110,7 +110,7 @@ pub const SHAPE_IDVS_COMPREHENSIVE: &str = concat!(
 pub const SHAPE_VEHICLES_MINIMAL: &str = concat!(
     "uuid,solicitation_identifier,is_synthetic_solicitation,program_acronym,",
     "organization_id,organization,vehicle_type,description,",
-    "idv_count,awardee_count,order_count,total_obligated,",
+    "idv_count,awardee_count,holder_count,order_winner_count,order_count,total_obligated,",
     "vehicle_obligations,vehicle_contracts_value,latest_award_date,",
     "solicitation_title,solicitation_date",
 );
@@ -122,7 +122,7 @@ pub const SHAPE_VEHICLES_COMPREHENSIVE: &str = concat!(
     "solicitation_title,solicitation_description,solicitation_date,opportunity_id,",
     "naics_code,psc_code,set_aside,",
     "fiscal_year,award_date,latest_award_date,last_date_to_order,",
-    "description,idv_count,awardee_count,order_count,total_obligated,",
+    "description,idv_count,awardee_count,holder_count,order_winner_count,order_count,total_obligated,",
     "vehicle_obligations,vehicle_contracts_value,",
     "type_of_idc,contract_type,metrics(*)",
 );
@@ -257,3 +257,24 @@ pub const SHAPE_SBIR_SOLICITATIONS_MINIMAL: &str = concat!(
     "solicitation_id,solicitation_number,title,program,activity,",
     "cycle_name,solicitation_status,year,start_date,end_date",
 );
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn vehicle_shapes_carry_company_counts() {
+        for (name, shape) in [
+            ("SHAPE_VEHICLES_MINIMAL", SHAPE_VEHICLES_MINIMAL),
+            ("SHAPE_VEHICLES_COMPREHENSIVE", SHAPE_VEHICLES_COMPREHENSIVE),
+        ] {
+            let fields: Vec<&str> = shape.split(',').collect();
+            for want in ["awardee_count", "holder_count", "order_winner_count"] {
+                assert!(
+                    fields.contains(&want),
+                    "{name} should carry {want:?}: {shape:?}"
+                );
+            }
+        }
+    }
+}