diff --git a/openfut-adapter-fifa17/src/fut/item.rs b/openfut-adapter-fifa17/src/fut/item.rs
index 054b620..614fcad 100644
--- a/openfut-adapter-fifa17/src/fut/item.rs
+++ b/openfut-adapter-fifa17/src/fut/item.rs
@@ -87,7 +87,11 @@ fn discard_value(rating: u8) -> i64 {
 /// identical by construction. `id` is the owned instance's resolved FIFA
 /// identity — pass the resolver's answer for *this* owned copy so two copies of
 /// one definition stay distinct on the wire.
-pub fn shape_item(item: &CoreOwnedItem, id: Fifa17Identity, ent: &impl ReverseEntityResolver) -> Value {
+pub fn shape_item(
+    item: &CoreOwnedItem,
+    id: Fifa17Identity,
+    ent: &impl ReverseEntityResolver,
+) -> Value {
     let asset = id.asset_id;
     let league_id = ent.league_id(&item.league).unwrap_or(0);
     let team_id = ent.team_id(&item.club).unwrap_or(0);
@@ -155,13 +159,19 @@ mod tests {
         let ent = entities();
         let it = shape_item(
             &item("oc1", "card_ch_1", 86, "CDM"),
-            Fifa17Identity { item_id: 100000001, asset_id: 20801 },
+            Fifa17Identity {
+                item_id: 100000001,
+                asset_id: 20801,
+            },
             &ent,
         );
         assert_eq!(it["id"], 100000001, "wire instance id");
         assert_eq!(it["resourceId"], 20801);
         assert_eq!(it["assetId"], 20801);
-        assert_eq!(it["definitionId"], 20801, "version byte 0 => resourceId==assetId==definitionId");
+        assert_eq!(
+            it["definitionId"], 20801,
+            "version byte 0 => resourceId==assetId==definitionId"
+        );
         assert_eq!(it["rating"], 86);
         assert_eq!(it["preferredPosition"], "CDM");
         assert_eq!(it["leagueId"], 13);
@@ -180,16 +190,28 @@ mod tests {
         let ent = entities();
         let a = shape_item(
             &item("oc-a", "fifa17_101490", 84, "ST"),
-            Fifa17Identity { item_id: 100000030, asset_id: 101490 },
+            Fifa17Identity {
+                item_id: 100000030,
+                asset_id: 101490,
+            },
             &ent,
         );
         let b = shape_item(
             &item("oc-b", "fifa17_101490", 84, "ST"),
-            Fifa17Identity { item_id: 100000031, asset_id: 101490 },
+            Fifa17Identity {
+                item_id: 100000031,
+                asset_id: 101490,
+            },
             &ent,
         );
-        assert_eq!(a["resourceId"], b["resourceId"], "same definition => same asset");
-        assert_ne!(a["id"], b["id"], "distinct owned copies keep distinct wire ids");
+        assert_eq!(
+            a["resourceId"], b["resourceId"],
+            "same definition => same asset"
+        );
+        assert_ne!(
+            a["id"], b["id"],
+            "distinct owned copies keep distinct wire ids"
+        );
         assert_eq!(a["id"], 100000030);
         assert_eq!(b["id"], 100000031);
     }
diff --git a/openfut-adapter-fifa17/src/fut/mod.rs b/openfut-adapter-fifa17/src/fut/mod.rs
index d4a43ff..4567d21 100644
--- a/openfut-adapter-fifa17/src/fut/mod.rs
+++ b/openfut-adapter-fifa17/src/fut/mod.rs
@@ -6,8 +6,8 @@
 //! socket — a Rust UTAS host wires it to Core later.
 pub mod catalog;
 pub mod club_response;
-pub mod item;
 pub mod entities;
+pub mod item;
 pub mod owned_query;
 pub mod squad;
 pub mod squad_ext;
diff --git a/openfut-adapter-fifa17/src/fut/squad_ext.rs b/openfut-adapter-fifa17/src/fut/squad_ext.rs
index 447dbed..c034c3f 100644
--- a/openfut-adapter-fifa17/src/fut/squad_ext.rs
+++ b/openfut-adapter-fifa17/src/fut/squad_ext.rs
@@ -51,7 +51,10 @@ pub struct WireItemRef {
 
 impl From<&SquadEntityRef> for WireItemRef {
     fn from(r: &SquadEntityRef) -> Self {
-        WireItemRef { id: r.id, dream: r.dream }
+        WireItemRef {
+            id: r.id,
+            dream: r.dream,
+        }
     }
 }
 
@@ -135,7 +138,10 @@ impl Fifa17SquadExtensionV1 {
                 .iter()
                 .map(|k| KicktakerRef {
                     index: k.index,
-                    item: WireItemRef { id: k.id, dream: k.dream },
+                    item: WireItemRef {
+                        id: k.id,
+                        dream: k.dream,
+                    },
                 })
                 .collect(),
             client_reported: ClientReportedSquadEval {
@@ -213,16 +219,23 @@ pub fn build_squad_write(
 ) -> Result<SquadWriteBuild, SquadBuildError> {
     let canonical = crate::fut::squad::to_proposed(put, resolver);
     if !canonical.unresolved_wire_ids.is_empty() {
-        return Err(SquadBuildError::UnresolvedWireIds(canonical.unresolved_wire_ids.clone()));
+        return Err(SquadBuildError::UnresolvedWireIds(
+            canonical.unresolved_wire_ids.clone(),
+        ));
     }
     let mut seen = std::collections::HashSet::new();
     for slot in &canonical.slots {
         if !seen.insert(slot.owned_card_id.as_str()) {
-            return Err(SquadBuildError::DuplicateOwnedItem(slot.owned_card_id.clone()));
+            return Err(SquadBuildError::DuplicateOwnedItem(
+                slot.owned_card_id.clone(),
+            ));
         }
     }
     let extension = Fifa17SquadExtensionV1::from_put(put, &canonical);
-    Ok(SquadWriteBuild { canonical, extension })
+    Ok(SquadWriteBuild {
+        canonical,
+        extension,
+    })
 }
 
 #[cfg(test)]
@@ -266,7 +279,8 @@ mod tests {
         let ext = built().extension;
         assert_eq!(ext.custom, put.custom, "opaque custom carried verbatim");
         // survives a serialize/parse cycle unchanged.
-        let back = Fifa17SquadExtensionV1::from_payload(EXT_SCHEMA_VERSION, &ext.to_payload()).unwrap();
+        let back =
+            Fifa17SquadExtensionV1::from_payload(EXT_SCHEMA_VERSION, &ext.to_payload()).unwrap();
         assert_eq!(back.custom, put.custom);
     }
 
@@ -285,14 +299,24 @@ mod tests {
         let ext = built().extension;
         assert_eq!(
             ext.client_reported,
-            ClientReportedSquadEval { chemistry: Some(52), rating: Some(90), star_rating: Some(90) }
+            ClientReportedSquadEval {
+                chemistry: Some(52),
+                rating: Some(90),
+                star_rating: Some(90)
+            }
         );
     }
 
     #[test]
     fn manager_and_kicktakers_preserved_opaquely() {
         let ext = built().extension;
-        assert_eq!(ext.manager, vec![WireItemRef { id: 100000427, dream: false }]);
+        assert_eq!(
+            ext.manager,
+            vec![WireItemRef {
+                id: 100000427,
+                dream: false
+            }]
+        );
         assert_eq!(ext.kicktakers.len(), 5);
         // All five reference the same wire id in this capture; carried verbatim,
         // NEVER normalized to the captain even though they coincide here.
@@ -341,7 +365,10 @@ mod tests {
         m.insert(100000003, "oc-dup".to_string());
         m.insert(100000004, "oc-dup".to_string()); // collide onto same owned id
         let err = build_squad_write(&put, &MapResolver(m)).unwrap_err();
-        assert_eq!(err, SquadBuildError::DuplicateOwnedItem("oc-dup".to_string()));
+        assert_eq!(
+            err,
+            SquadBuildError::DuplicateOwnedItem("oc-dup".to_string())
+        );
     }
 
     #[test]
@@ -350,6 +377,10 @@ mod tests {
         assert_eq!(build.canonical.slots.len(), 11, "whole squad, not a diff");
         assert_eq!(build.canonical.formation.as_deref(), Some("f442"));
         // No FIFA wire integer survives into the canonical slots.
-        assert!(build.canonical.slots.iter().all(|s| s.owned_card_id.starts_with("oc-")));
+        assert!(build
+            .canonical
+            .slots
+            .iter()
+            .all(|s| s.owned_card_id.starts_with("oc-")));
     }
 }
diff --git a/openfut-adapter-fifa17/src/fut/squad_projection.rs b/openfut-adapter-fifa17/src/fut/squad_projection.rs
index 441caae..2bfc472 100644
--- a/openfut-adapter-fifa17/src/fut/squad_projection.rs
+++ b/openfut-adapter-fifa17/src/fut/squad_projection.rs
@@ -109,7 +109,10 @@ impl std::fmt::Display for SquadProjectError {
                 write!(f, "projection input missing owned item {id}")
             }
             SquadProjectError::NoFifaIdentity(id) => {
-                write!(f, "owned item {id} has no real FIFA asset identity (cannot render)")
+                write!(
+                    f,
+                    "owned item {id} has no real FIFA asset identity (cannot render)"
+                )
             }
         }
     }
@@ -139,10 +142,9 @@ pub fn project_squad<I: ItemIdentityResolver + ?Sized>(
     for index in 0..FIFA17_SQUAD_SLOTS {
         match by_index.get(&index) {
             Some(slot) => {
-                let item = input
-                    .owned
-                    .get(&slot.owned_card_id)
-                    .ok_or_else(|| SquadProjectError::MissingOwnedItem(slot.owned_card_id.clone()))?;
+                let item = input.owned.get(&slot.owned_card_id).ok_or_else(|| {
+                    SquadProjectError::MissingOwnedItem(slot.owned_card_id.clone())
+                })?;
                 let id = ident
                     .resolve(item)
                     .ok_or_else(|| SquadProjectError::NoFifaIdentity(slot.owned_card_id.clone()))?;
@@ -150,7 +152,11 @@ pub fn project_squad<I: ItemIdentityResolver + ?Sized>(
                     captain_wire = id.item_id as i64;
                 }
                 // kit follows the player: look it up by owned id, never by index.
-                let kit = ext.kit_numbers.get(&slot.owned_card_id).copied().unwrap_or(0);
+                let kit = ext
+                    .kit_numbers
+                    .get(&slot.owned_card_id)
+                    .copied()
+                    .unwrap_or(0);
                 players.push(json!({
                     "index": index,
                     "itemData": shape_item(item, id, ent),
@@ -278,14 +284,24 @@ mod tests {
         owned.insert("oc1".to_string(), owned_item("oc1", "card_x"));
         let ident = TableIdentity(HashMap::from([(
             "oc1".to_string(),
-            Fifa17Identity { item_id: 100000042, asset_id: 20801 },
+            Fifa17Identity {
+                item_id: 100000042,
+                asset_id: 20801,
+            },
         )]));
         let input = one_slot_input(&owned, SquadExtInput::Fresh(fresh_ext()));
         let SquadProjection::Projected(v) = project_squad(&input, &ident, &ent()).unwrap() else {
             panic!("expected Projected");
         };
-        assert_eq!(v["players"].as_array().unwrap().len(), 23, "fixed 23-slot array");
-        assert_eq!(v["players"][0]["itemData"]["id"], 100000042, "wire id, not resourceId");
+        assert_eq!(
+            v["players"].as_array().unwrap().len(),
+            23,
+            "fixed 23-slot array"
+        );
+        assert_eq!(
+            v["players"][0]["itemData"]["id"], 100000042,
+            "wire id, not resourceId"
+        );
         assert_eq!(v["players"][0]["itemData"]["resourceId"], 20801);
         assert_eq!(v["players"][0]["kitNumber"], 9, "kit from ext by owned id");
         assert_eq!(v["players"][1]["itemData"]["id"], 0, "empty slot");
@@ -301,7 +317,10 @@ mod tests {
         // A stale extension IS carried (host may log it) but must not be applied.
         let input = one_slot_input(&owned, SquadExtInput::Stale(fresh_ext()));
         let ident = TableIdentity(HashMap::new());
-        assert_eq!(project_squad(&input, &ident, &ent()).unwrap(), SquadProjection::Stale);
+        assert_eq!(
+            project_squad(&input, &ident, &ent()).unwrap(),
+            SquadProjection::Stale
+        );
     }
 
     #[test]
@@ -309,7 +328,10 @@ mod tests {
         let owned = HashMap::new();
         let input = one_slot_input(&owned, SquadExtInput::Missing);
         let ident = TableIdentity(HashMap::new());
-        assert_eq!(project_squad(&input, &ident, &ent()).unwrap(), SquadProjection::Missing);
+        assert_eq!(
+            project_squad(&input, &ident, &ent()).unwrap(),
+            SquadProjection::Missing
+        );
     }
 
     #[test]
@@ -332,21 +354,46 @@ mod tests {
         owned.insert("oc-a".to_string(), owned_item("oc-a", "fifa17_101490"));
         owned.insert("oc-b".to_string(), owned_item("oc-b", "fifa17_101490"));
         let ident = TableIdentity(HashMap::from([
-            ("oc-a".to_string(), Fifa17Identity { item_id: 100000030, asset_id: 101490 }),
-            ("oc-b".to_string(), Fifa17Identity { item_id: 100000031, asset_id: 101490 }),
+            (
+                "oc-a".to_string(),
+                Fifa17Identity {
+                    item_id: 100000030,
+                    asset_id: 101490,
+                },
+            ),
+            (
+                "oc-b".to_string(),
+                Fifa17Identity {
+                    item_id: 100000031,
+                    asset_id: 101490,
+                },
+            ),
         ]));
         let mut kit = std::collections::BTreeMap::new();
         kit.insert("oc-a".to_string(), 7);
         kit.insert("oc-b".to_string(), 19);
-        let ext = Fifa17SquadExtensionV1 { kit_numbers: kit, ..fresh_ext() };
+        let ext = Fifa17SquadExtensionV1 {
+            kit_numbers: kit,
+            ..fresh_ext()
+        };
         let owned_ref = &owned;
         let input = SquadProjectionInput {
             fifa_squad_id: 0,
             name: "OpenFUT".into(),
             formation: "f442".into(),
             slots: vec![
-                ProjectionSlot { owned_card_id: "oc-a".into(), index: 0, is_captain: false, is_on_bench: false },
-                ProjectionSlot { owned_card_id: "oc-b".into(), index: 1, is_captain: false, is_on_bench: false },
+                ProjectionSlot {
+                    owned_card_id: "oc-a".into(),
+                    index: 0,
+                    is_captain: false,
+                    is_on_bench: false,
+                },
+                ProjectionSlot {
+                    owned_card_id: "oc-b".into(),
+                    index: 1,
+                    is_captain: false,
+                    is_on_bench: false,
+                },
             ],
             ext: SquadExtInput::Fresh(ext),
             owned: owned_ref,
@@ -356,9 +403,18 @@ mod tests {
         };
         let a = &v["players"][0]["itemData"];
         let b = &v["players"][1]["itemData"];
-        assert_eq!(a["resourceId"], b["resourceId"], "same definition => same asset");
-        assert_ne!(a["id"], b["id"], "distinct owned copies keep distinct wire ids");
+        assert_eq!(
+            a["resourceId"], b["resourceId"],
+            "same definition => same asset"
+        );
+        assert_ne!(
+            a["id"], b["id"],
+            "distinct owned copies keep distinct wire ids"
+        );
         assert_eq!(v["players"][0]["kitNumber"], 7);
-        assert_eq!(v["players"][1]["kitNumber"], 19, "kit stays with the instance");
+        assert_eq!(
+            v["players"][1]["kitNumber"], 19,
+            "kit stays with the instance"
+        );
     }
 }
diff --git a/openfut-adapter-fifa17/tests/squad_projection.rs b/openfut-adapter-fifa17/tests/squad_projection.rs
index 10571dd..97a576e 100644
--- a/openfut-adapter-fifa17/tests/squad_projection.rs
+++ b/openfut-adapter-fifa17/tests/squad_projection.rs
@@ -60,9 +60,15 @@ impl ItemIdentityResolver for TableIdentity {
 /// projector round-trip asserts item *identity* (wire id + asset), not entity ids.
 struct NoEntities;
 impl openfut_adapter_fifa17::fut::entities::ReverseEntityResolver for NoEntities {
-    fn league_id(&self, _: &str) -> Option<u32> { None }
-    fn team_id(&self, _: &str) -> Option<u32> { None }
-    fn nation_id(&self, _: &str) -> Option<u32> { None }
+    fn league_id(&self, _: &str) -> Option<u32> {
+        None
+    }
+    fn team_id(&self, _: &str) -> Option<u32> {
+        None
+    }
+    fn nation_id(&self, _: &str) -> Option<u32> {
+        None
+    }
 }
 
 /// Build the owned-item map + identity table from the persisted read oracle, so
@@ -99,7 +105,13 @@ fn oracle_tables() -> (HashMap<String, CoreOwnedItem>, TableIdentity) {
                 attributes: [attrs[0], attrs[1], attrs[2], attrs[3], attrs[4], attrs[5]],
             },
         );
-        ident.insert(oc, Fifa17Identity { item_id: wire as u32, asset_id: asset });
+        ident.insert(
+            oc,
+            Fifa17Identity {
+                item_id: wire as u32,
+                asset_id: asset,
+            },
+        );
     }
     (owned, TableIdentity(ident))
 }
@@ -111,8 +123,10 @@ fn project_put(
     owned: &HashMap<String, CoreOwnedItem>,
     ident: &TableIdentity,
 ) -> Value {
-    let SquadWriteBuild { canonical, extension } =
-        build_squad_write(put, &OcResolver).expect("build must succeed for a full valid squad");
+    let SquadWriteBuild {
+        canonical,
+        extension,
+    } = build_squad_write(put, &OcResolver).expect("build must succeed for a full valid squad");
     let slots: Vec<ProjectionSlot> = canonical
         .slots
         .iter()
@@ -148,7 +162,10 @@ fn occupied(v: &Value) -> HashMap<i64, (i64, i64)> {
         .map(|p| {
             (
                 p["index"].as_i64().unwrap(),
-                (p["itemData"]["id"].as_i64().unwrap(), p["kitNumber"].as_i64().unwrap()),
+                (
+                    p["itemData"]["id"].as_i64().unwrap(),
+                    p["kitNumber"].as_i64().unwrap(),
+                ),
             )
         })
         .collect()
@@ -163,11 +180,18 @@ fn baseline_projects_the_known_squad_round_trip() {
     // Fixed 23-slot array; 11 occupied at 0..=10.
     assert_eq!(projected["players"].as_array().unwrap().len(), 23);
     let put_v: Value = serde_json::from_str(PUT_BASELINE).unwrap();
-    assert_eq!(occupied(&projected), occupied(&put_v), "wire id + kit per index round-trip");
+    assert_eq!(
+        occupied(&projected),
+        occupied(&put_v),
+        "wire id + kit per index round-trip"
+    );
 
     // CANONICAL: formation verbatim, captain follows the semantic player.
     assert_eq!(projected["formation"], "f442");
-    assert_eq!(projected["captain"], 100000001, "captain is the player's WIRE id");
+    assert_eq!(
+        projected["captain"], 100000001,
+        "captain is the player's WIRE id"
+    );
     // EXTENSION: custom byte-identical, manager + squadType preserved.
     assert_eq!(projected["custom"], put_v["custom"]);
     assert_eq!(projected["manager"], put_v["manager"]);
@@ -184,12 +208,20 @@ fn swap_moves_two_players_with_their_kits_and_round_trips() {
     // build(swap) must reproduce the swap wire exactly, and the affected players'
     // kit numbers must have travelled with them (kit follows the player).
     let (owned, ident) = oracle_tables();
-    let projected = project_put(&parse_squad_put(PUT_SWAP.as_bytes()).unwrap(), &owned, &ident);
+    let projected = project_put(
+        &parse_squad_put(PUT_SWAP.as_bytes()).unwrap(),
+        &owned,
+        &ident,
+    );
     let swap_v: Value = serde_json::from_str(PUT_SWAP).unwrap();
     let base_v: Value = serde_json::from_str(PUT_BASELINE).unwrap();
 
     // CANONICAL: the projected occupancy per index matches the swap PUT exactly.
-    assert_eq!(occupied(&projected), occupied(&swap_v), "player+kit per index round-trip");
+    assert_eq!(
+        occupied(&projected),
+        occupied(&swap_v),
+        "player+kit per index round-trip"
+    );
 
     // The swap is real: at least two indices carry a different player than baseline.
     let (proj_occ, base_occ) = (occupied(&projected), occupied(&base_v));
@@ -198,7 +230,10 @@ fn swap_moves_two_players_with_their_kits_and_round_trips() {
         .filter(|(idx, pair)| base_occ.get(idx).map(|b| b.0) != Some(pair.0))
         .map(|(idx, _)| *idx)
         .collect();
-    assert!(moved.len() >= 2, "a swap changes at least two slots, got {moved:?}");
+    assert!(
+        moved.len() >= 2,
+        "a swap changes at least two slots, got {moved:?}"
+    );
 
     // kit follows the PLAYER: for every player, its kit in baseline == its kit
     // in the swap projection, regardless of which slot it now occupies.
@@ -211,8 +246,14 @@ fn swap_moves_two_players_with_their_kits_and_round_trips() {
         "each player kept its kit number through the swap"
     );
 
-    assert_eq!(projected["captain"], 100000001, "captain follows the semantic player");
-    assert_eq!(projected["custom"], swap_v["custom"], "opaque custom unchanged by the swap");
+    assert_eq!(
+        projected["captain"], 100000001,
+        "captain follows the semantic player"
+    );
+    assert_eq!(
+        projected["custom"], swap_v["custom"],
+        "opaque custom unchanged by the swap"
+    );
     // SHADOW: the client-reported chemistry from THIS PUT (58) is round-tripped
     // as-is — never reconciled to a server recompute.
     assert_eq!(projected["chemistry"], 58);
@@ -225,7 +266,9 @@ fn persisted_read_round_trips_via_reconstructed_canonical_and_extension() {
     // evidence, then project and require the read back — the strongest fidelity
     // check across all four ownership classes.
     use openfut_adapter_fifa17::fut::squad::ClientReportedSquadEval;
-    use openfut_adapter_fifa17::fut::squad_ext::{Fifa17SquadExtensionV1, KicktakerRef, WireItemRef};
+    use openfut_adapter_fifa17::fut::squad_ext::{
+        Fifa17SquadExtensionV1, KicktakerRef, WireItemRef,
+    };
     use std::collections::BTreeMap;
 
     let oracle: Value = serde_json::from_str(READ_ORACLE).unwrap();
@@ -250,7 +293,8 @@ fn persisted_read_round_trips_via_reconstructed_canonical_and_extension() {
         });
     }
     let manager: Vec<WireItemRef> = serde_json::from_value(oracle["manager"].clone()).unwrap();
-    let kicktakers: Vec<KicktakerRef> = serde_json::from_value(oracle["kicktakers"].clone()).unwrap();
+    let kicktakers: Vec<KicktakerRef> =
+        serde_json::from_value(oracle["kicktakers"].clone()).unwrap();
     let ext = Fifa17SquadExtensionV1 {
         custom: oracle["custom"].as_str().map(str::to_string),
         squad_type: oracle["squadType"].as_str().map(str::to_string),
@@ -277,14 +321,32 @@ fn persisted_read_round_trips_via_reconstructed_canonical_and_extension() {
     };
 
     // CANONICAL + DERIVED: identity and placement per slot match the read.
-    assert_eq!(occupied(&projected), occupied(&oracle), "player+kit per index");
+    assert_eq!(
+        occupied(&projected),
+        occupied(&oracle),
+        "player+kit per index"
+    );
     assert_eq!(projected["captain"], oracle["captain"]);
     assert_eq!(projected["formation"], oracle["formation"]);
-    for (pp, op) in projected["players"].as_array().unwrap().iter().zip(oracle["players"].as_array().unwrap()) {
-        assert_eq!(pp["itemData"]["id"], op["itemData"]["id"], "wire id per slot");
-        assert_eq!(pp["itemData"]["resourceId"], op["itemData"]["resourceId"], "asset id per slot");
+    for (pp, op) in projected["players"]
+        .as_array()
+        .unwrap()
+        .iter()
+        .zip(oracle["players"].as_array().unwrap())
+    {
+        assert_eq!(
+            pp["itemData"]["id"], op["itemData"]["id"],
+            "wire id per slot"
+        );
+        assert_eq!(
+            pp["itemData"]["resourceId"], op["itemData"]["resourceId"],
+            "asset id per slot"
+        );
         assert_eq!(pp["itemData"]["rating"], op["itemData"]["rating"]);
-        assert_eq!(pp["itemData"]["preferredPosition"], op["itemData"]["preferredPosition"]);
+        assert_eq!(
+            pp["itemData"]["preferredPosition"],
+            op["itemData"]["preferredPosition"]
+        );
     }
     // EXTENSION + SHADOW: sourced from the read, so they round-trip identically.
     assert_eq!(projected["custom"], oracle["custom"]);
@@ -299,8 +361,16 @@ fn persisted_read_round_trips_via_reconstructed_canonical_and_extension() {
 #[test]
 fn formation_change_reindexes_without_deriving_slots_and_kit_follows_player() {
     let (owned, ident) = oracle_tables();
-    let swap = project_put(&parse_squad_put(PUT_SWAP.as_bytes()).unwrap(), &owned, &ident);
-    let f433 = project_put(&parse_squad_put(PUT_F433.as_bytes()).unwrap(), &owned, &ident);
+    let swap = project_put(
+        &parse_squad_put(PUT_SWAP.as_bytes()).unwrap(),
+        &owned,
+        &ident,
+    );
+    let f433 = project_put(
+        &parse_squad_put(PUT_F433.as_bytes()).unwrap(),
+        &owned,
+        &ident,
+    );
 
     assert_eq!(f433["formation"], "f433");
     assert_eq!(swap["formation"], "f442");
@@ -311,29 +381,50 @@ fn formation_change_reindexes_without_deriving_slots_and_kit_follows_player() {
         ids.sort();
         ids
     };
-    assert_eq!(set(&swap), set(&f433), "same 11 players survive the formation change");
+    assert_eq!(
+        set(&swap),
+        set(&f433),
+        "same 11 players survive the formation change"
+    );
 
     // The captain (wire 100000001) moved from index 8 (f442) to index 10 (f433) —
     // proof indices are round-tripped, not derived from the formation.
     let idx_of = |v: &Value, wire: i64| -> i64 {
-        occupied(v).into_iter().find(|(_, (id, _))| *id == wire).unwrap().0
+        occupied(v)
+            .into_iter()
+            .find(|(_, (id, _))| *id == wire)
+            .unwrap()
+            .0
     };
     assert_eq!(idx_of(&swap, 100000001), 8);
     assert_eq!(idx_of(&f433, 100000001), 10);
 
     // kit follows the PLAYER, not the slot: captain keeps kit 8 across the reindex.
     let kit_of = |v: &Value, wire: i64| -> i64 {
-        occupied(v).into_iter().find(|(_, (id, _))| *id == wire).unwrap().1 .1
+        occupied(v)
+            .into_iter()
+            .find(|(_, (id, _))| *id == wire)
+            .unwrap()
+            .1
+             .1
     };
     assert_eq!(kit_of(&swap, 100000001), 8);
-    assert_eq!(kit_of(&f433, 100000001), 8, "kit stayed with the player despite the reindex");
+    assert_eq!(
+        kit_of(&f433, 100000001),
+        8,
+        "kit stayed with the player despite the reindex"
+    );
     assert_eq!(f433["captain"], 100000001, "captain still the same player");
 }
 
 #[test]
 fn one_projector_serves_every_endpoint_no_divergence() {
     let (owned, ident) = oracle_tables();
-    let projected = project_put(&parse_squad_put(PUT_SWAP.as_bytes()).unwrap(), &owned, &ident);
+    let projected = project_put(
+        &parse_squad_put(PUT_SWAP.as_bytes()).unwrap(),
+        &owned,
+        &ident,
+    );
 
     // userMassInfo.squad = the projected object + session envelope.
     let ummi = user_mass_info_squad(projected.clone(), 33068179);
@@ -346,8 +437,18 @@ fn one_projector_serves_every_endpoint_no_divergence() {
     // squad/list = a summary SUBSET of the SAME object, not a second projection.
     let list = squad_list(&projected);
     let entry = &list["squad"][0];
-    for k in ["id", "squadName", "formation", "squadType", "rating", "chemistry"] {
-        assert_eq!(entry[k], projected[k], "summary field {k} derived from the one projection");
+    for k in [
+        "id",
+        "squadName",
+        "formation",
+        "squadType",
+        "rating",
+        "chemistry",
+    ] {
+        assert_eq!(
+            entry[k], projected[k],
+            "summary field {k} derived from the one projection"
+        );
     }
     // The summary carries only those six keys — no divergent squad shape.
     assert_eq!(entry.as_object().unwrap().len(), 6);
diff --git a/openfut-utas-host/src/lib.rs b/openfut-utas-host/src/lib.rs
index b55cb20..74b6438 100644
--- a/openfut-utas-host/src/lib.rs
+++ b/openfut-utas-host/src/lib.rs
@@ -164,8 +164,14 @@ pub struct CoreSquadSlot {
 /// when Stale — the host decides policy).
 #[derive(Debug, Clone)]
 pub enum CoreExtState {
-    Fresh { schema_version: i64, payload: String },
-    Stale { schema_version: i64, payload: String },
+    Fresh {
+        schema_version: i64,
+        payload: String,
+    },
+    Stale {
+        schema_version: i64,
+        payload: String,
+    },
     Missing,
 }
 
@@ -299,7 +305,11 @@ impl CoreAccess for HttpCoreClient {
         }
         let v: Value = resp.json().map_err(|e| CoreError::Parse(e.to_string()))?;
         Ok(CoreReplaceResult {
-            squad_id: v.get("squad_id").and_then(|x| x.as_str()).unwrap_or("").to_string(),
+            squad_id: v
+                .get("squad_id")
+                .and_then(|x| x.as_str())
+                .unwrap_or("")
+                .to_string(),
             canonical_fingerprint: v
                 .get("canonical_fingerprint")
                 .and_then(|x| x.as_str())
@@ -343,8 +353,14 @@ pub fn replace_request_body(req: &CoreReplaceRequest) -> Value {
 
 /// Parse Core's `GET /squad/ext` response into a [`CoreSquadRead`].
 pub fn parse_core_squad_read(v: &Value) -> Result<CoreSquadRead, CoreError> {
-    let squad = v.get("squad").ok_or_else(|| CoreError::Parse("missing `squad`".into()))?;
-    let name = squad.get("name").and_then(|x| x.as_str()).unwrap_or("").to_string();
+    let squad = v
+        .get("squad")
+        .ok_or_else(|| CoreError::Parse("missing `squad`".into()))?;
+    let name = squad
+        .get("name")
+        .and_then(|x| x.as_str())
+        .unwrap_or("")
+        .to_string();
     let formation = squad
         .get("formation")
         .and_then(|x| x.as_str())
@@ -360,25 +376,56 @@ pub fn parse_core_squad_read(v: &Value) -> Result<CoreSquadRead, CoreError> {
             Some(CoreSquadSlot {
                 owned_card_id: p.get("owned_card_id")?.as_str()?.to_string(),
                 index: p.get("position_index")?.as_i64()?,
-                is_captain: p.get("is_captain").and_then(|x| x.as_bool()).unwrap_or(false),
-                is_on_bench: p.get("is_on_bench").and_then(|x| x.as_bool()).unwrap_or(false),
+                is_captain: p
+                    .get("is_captain")
+                    .and_then(|x| x.as_bool())
+                    .unwrap_or(false),
+                is_on_bench: p
+                    .get("is_on_bench")
+                    .and_then(|x| x.as_bool())
+                    .unwrap_or(false),
             })
         })
         .collect();
-    let ext_v = v.get("extension").ok_or_else(|| CoreError::Parse("missing `extension`".into()))?;
+    let ext_v = v
+        .get("extension")
+        .ok_or_else(|| CoreError::Parse("missing `extension`".into()))?;
     let ext = match ext_v.get("state").and_then(|x| x.as_str()) {
         Some("fresh") => CoreExtState::Fresh {
-            schema_version: ext_v.get("schema_version").and_then(|x| x.as_i64()).unwrap_or(0),
-            payload: ext_v.get("payload").and_then(|x| x.as_str()).unwrap_or("").to_string(),
+            schema_version: ext_v
+                .get("schema_version")
+                .and_then(|x| x.as_i64())
+                .unwrap_or(0),
+            payload: ext_v
+                .get("payload")
+                .and_then(|x| x.as_str())
+                .unwrap_or("")
+                .to_string(),
         },
         Some("stale") => CoreExtState::Stale {
-            schema_version: ext_v.get("schema_version").and_then(|x| x.as_i64()).unwrap_or(0),
-            payload: ext_v.get("payload").and_then(|x| x.as_str()).unwrap_or("").to_string(),
+            schema_version: ext_v
+                .get("schema_version")
+                .and_then(|x| x.as_i64())
+                .unwrap_or(0),
+            payload: ext_v
+                .get("payload")
+                .and_then(|x| x.as_str())
+                .unwrap_or("")
+                .to_string(),
         },
         Some("missing") => CoreExtState::Missing,
-        other => return Err(CoreError::Parse(format!("unknown extension state {other:?}"))),
+        other => {
+            return Err(CoreError::Parse(format!(
+                "unknown extension state {other:?}"
+            )))
+        }
     };
-    Ok(CoreSquadRead { name, formation, slots, ext })
+    Ok(CoreSquadRead {
+        name,
+        formation,
+        slots,
+        ext,
+    })
 }
 
 /// Parse Core's `/collection` response `{ "collection": [...], "total": n }` into
@@ -655,7 +702,10 @@ fn project_active_squad(deps: &SquadDeps<'_>) -> HostProjection {
         Err(e) => return HostProjection::Error(e.to_string()),
     };
     let ext = match &read.ext {
-        CoreExtState::Fresh { schema_version, payload } => {
+        CoreExtState::Fresh {
+            schema_version,
+            payload,
+        } => {
             match Fifa17SquadExtensionV1::from_payload(*schema_version, payload) {
                 Ok(e) => e,
                 // Fresh but the payload does not parse as our schema: corruption,
@@ -670,8 +720,10 @@ fn project_active_squad(deps: &SquadDeps<'_>) -> HostProjection {
         Ok(v) => v,
         Err(e) => return HostProjection::Error(e.to_string()),
     };
-    let owned_by_id: std::collections::HashMap<String, CoreOwnedItem> =
-        owned.into_iter().map(|i| (i.owned_card_id.clone(), i)).collect();
+    let owned_by_id: std::collections::HashMap<String, CoreOwnedItem> = owned
+        .into_iter()
+        .map(|i| (i.owned_card_id.clone(), i))
+        .collect();
     let slots: Vec<ProjectionSlot> = read
         .slots
         .iter()
@@ -718,7 +770,10 @@ pub fn handle_put_squad(body: &[u8], deps: &SquadDeps<'_>) -> (WireResponse, Squ
         Err(e) => {
             return (
                 error_response(400, "parse_error"),
-                SquadLog { outcome: "parse_error", detail: e.to_string() },
+                SquadLog {
+                    outcome: "parse_error",
+                    detail: e.to_string(),
+                },
             )
         }
     };
@@ -729,13 +784,19 @@ pub fn handle_put_squad(body: &[u8], deps: &SquadDeps<'_>) -> (WireResponse, Squ
         Err(SquadBuildError::UnresolvedWireIds(ids)) => {
             return (
                 error_response(400, "unresolved_wire_ids"),
-                SquadLog { outcome: "unresolved_wire_ids", detail: format!("{ids:?}") },
+                SquadLog {
+                    outcome: "unresolved_wire_ids",
+                    detail: format!("{ids:?}"),
+                },
             )
         }
         Err(SquadBuildError::DuplicateOwnedItem(id)) => {
             return (
                 error_response(400, "duplicate_owned_item"),
-                SquadLog { outcome: "duplicate_owned_item", detail: id },
+                SquadLog {
+                    outcome: "duplicate_owned_item",
+                    detail: id,
+                },
             )
         }
     };
@@ -747,7 +808,10 @@ pub fn handle_put_squad(body: &[u8], deps: &SquadDeps<'_>) -> (WireResponse, Squ
         Err(e) => {
             return (
                 error_response(502, "core_error"),
-                SquadLog { outcome: "core_error", detail: e.to_string() },
+                SquadLog {
+                    outcome: "core_error",
+                    detail: e.to_string(),
+                },
             )
         }
     };
@@ -755,7 +819,10 @@ pub fn handle_put_squad(body: &[u8], deps: &SquadDeps<'_>) -> (WireResponse, Squ
         if !owned_set.contains(&slot.owned_card_id) {
             return (
                 error_response(403, "not_owned"),
-                SquadLog { outcome: "unauthorized_item", detail: slot.owned_card_id.clone() },
+                SquadLog {
+                    outcome: "unauthorized_item",
+                    detail: slot.owned_card_id.clone(),
+                },
             );
         }
     }
@@ -786,11 +853,17 @@ pub fn handle_put_squad(body: &[u8], deps: &SquadDeps<'_>) -> (WireResponse, Squ
     match deps.core.replace_squad(&req) {
         Ok(_) => (
             json_response(&save_ack(put.id)),
-            SquadLog { outcome: "ok", detail: String::new() },
+            SquadLog {
+                outcome: "ok",
+                detail: String::new(),
+            },
         ),
         Err(e) => (
             error_response(502, "core_error"),
-            SquadLog { outcome: "core_error", detail: e.to_string() },
+            SquadLog {
+                outcome: "core_error",
+                detail: e.to_string(),
+            },
         ),
     }
 }
@@ -802,19 +875,31 @@ pub fn handle_squad_list(deps: &SquadDeps<'_>) -> (WireResponse, SquadLog) {
     match project_active_squad(deps) {
         HostProjection::Squad(v) => (
             json_response(&squad_list(&v)),
-            SquadLog { outcome: "ok", detail: String::new() },
+            SquadLog {
+                outcome: "ok",
+                detail: String::new(),
+            },
         ),
         HostProjection::Stale => (
             json_response(&json!({ "squad": [] })),
-            SquadLog { outcome: "stale_integrity", detail: "stale extension not applied".into() },
+            SquadLog {
+                outcome: "stale_integrity",
+                detail: "stale extension not applied".into(),
+            },
         ),
         HostProjection::Missing => (
             json_response(&json!({ "squad": [] })),
-            SquadLog { outcome: "missing_integrity", detail: "no extension stored".into() },
+            SquadLog {
+                outcome: "missing_integrity",
+                detail: "no extension stored".into(),
+            },
         ),
         HostProjection::Error(e) => (
             json_response(&json!({ "squad": [] })),
-            SquadLog { outcome: "core_error", detail: e },
+            SquadLog {
+                outcome: "core_error",
+                detail: e,
+            },
         ),
     }
 }
@@ -841,8 +926,10 @@ fn set_json_body(resp: &mut WireResponse, body: Vec<u8>) {
             && !k.eq_ignore_ascii_case("content-type")
             && !k.eq_ignore_ascii_case("transfer-encoding")
     });
-    resp.headers.push(("Content-Type".to_string(), "application/json".to_string()));
-    resp.headers.push(("Content-Length".to_string(), body.len().to_string()));
+    resp.headers
+        .push(("Content-Type".to_string(), "application/json".to_string()));
+    resp.headers
+        .push(("Content-Length".to_string(), body.len().to_string()));
     resp.body = body;
 }
 
@@ -862,44 +949,83 @@ pub fn handle_user_mass_info(
         Err(e) => {
             return (
                 error_response(502, "upstream_unavailable"),
-                SquadLog { outcome: "python_unreachable", detail: e.to_string() },
+                SquadLog {
+                    outcome: "python_unreachable",
+                    detail: e.to_string(),
+                },
             )
         }
     };
     // Only a successful JSON object carrying `.squad` is overlaid; anything else
     // is returned verbatim (we never invent a squad into an unrelated response).
     if !(200..300).contains(&resp.status) {
-        return (resp, SquadLog { outcome: "python_non_2xx_passthrough", detail: String::new() });
+        return (
+            resp,
+            SquadLog {
+                outcome: "python_non_2xx_passthrough",
+                detail: String::new(),
+            },
+        );
     }
     let mut root: Value = match serde_json::from_slice::<Value>(&resp.body) {
         Ok(v) if v.is_object() => v,
-        _ => return (resp, SquadLog { outcome: "python_body_unusable_passthrough", detail: String::new() }),
+        _ => {
+            return (
+                resp,
+                SquadLog {
+                    outcome: "python_body_unusable_passthrough",
+                    detail: String::new(),
+                },
+            )
+        }
     };
     if root.get("squad").is_none() {
-        return (resp, SquadLog { outcome: "python_no_squad_passthrough", detail: String::new() });
+        return (
+            resp,
+            SquadLog {
+                outcome: "python_no_squad_passthrough",
+                detail: String::new(),
+            },
+        );
     }
     // Preserve the client's persona from Python's own response.
     let persona = root["squad"]
         .get("personaId")
         .and_then(|x| x.as_i64())
-        .or_else(|| root.get("userInfo").and_then(|u| u.get("personaId")).and_then(|x| x.as_i64()))
+        .or_else(|| {
+            root.get("userInfo")
+                .and_then(|u| u.get("personaId"))
+                .and_then(|x| x.as_i64())
+        })
         .unwrap_or(0);
     let (squad_val, log) = match project_active_squad(deps) {
         HostProjection::Squad(v) => (
             user_mass_info_squad(v, persona),
-            SquadLog { outcome: "ok", detail: String::new() },
+            SquadLog {
+                outcome: "ok",
+                detail: String::new(),
+            },
         ),
         HostProjection::Stale => (
             empty_squad_overlay(persona),
-            SquadLog { outcome: "stale_integrity", detail: "stale extension not applied".into() },
+            SquadLog {
+                outcome: "stale_integrity",
+                detail: "stale extension not applied".into(),
+            },
         ),
         HostProjection::Missing => (
             empty_squad_overlay(persona),
-            SquadLog { outcome: "missing_integrity", detail: "no extension stored".into() },
+            SquadLog {
+                outcome: "missing_integrity",
+                detail: "no extension stored".into(),
+            },
         ),
         HostProjection::Error(e) => (
             empty_squad_overlay(persona),
-            SquadLog { outcome: "core_error", detail: e },
+            SquadLog {
+                outcome: "core_error",
+                detail: e,
+            },
         ),
     };
     root["squad"] = squad_val;
diff --git a/openfut-utas-host/tests/host_test.rs b/openfut-utas-host/tests/host_test.rs
index 8ce1488..6cece42 100644
--- a/openfut-utas-host/tests/host_test.rs
+++ b/openfut-utas-host/tests/host_test.rs
@@ -13,10 +13,9 @@ use openfut_adapter_fifa17::fut::club_response::{CoreOwnedItem, ItemIdentityReso
 use openfut_adapter_fifa17::fut::entities::Fifa17Entities;
 use openfut_identity::JsonIdentityStore;
 use openfut_utas_host::{
-    classify, handle_put_squad, handle_squad_list, handle_user_mass_info, read_request,
-    CoreAccess, CoreError, CoreExtState, CorePage, CoreReplaceRequest,
-    CoreReplaceResult, CoreSquadRead, CoreSquadSlot, Fifa17IdentityResolver, HttpCoreClient,
-    PassClient, Route, Server, SquadDeps,
+    classify, handle_put_squad, handle_squad_list, handle_user_mass_info, read_request, CoreAccess,
+    CoreError, CoreExtState, CorePage, CoreReplaceRequest, CoreReplaceResult, CoreSquadRead,
+    CoreSquadSlot, Fifa17IdentityResolver, HttpCoreClient, PassClient, Route, Server, SquadDeps,
 };
 use parking_lot::Mutex;
 use serde_json::Value;
@@ -53,13 +52,23 @@ struct FakeCore {
 
 impl FakeCore {
     fn new(items: Vec<CoreOwnedItem>, total: i64) -> Self {
-        FakeCore { items, total, ..Default::default() }
+        FakeCore {
+            items,
+            total,
+            ..Default::default()
+        }
     }
     fn forbidden() -> Self {
-        FakeCore { panic_if_called: true, ..Default::default() }
+        FakeCore {
+            panic_if_called: true,
+            ..Default::default()
+        }
     }
     fn erroring() -> Self {
-        FakeCore { return_err: true, ..Default::default() }
+        FakeCore {
+            return_err: true,
+            ..Default::default()
+        }
     }
     /// Preset the stored squad read (for read-path tests without a prior PUT).
     fn with_squad(self, read: CoreSquadRead) -> Self {
@@ -85,7 +94,10 @@ impl FakeCore {
 
 impl CoreAccess for FakeCore {
     fn query_owned(&self, params: &[(&str, String)]) -> Result<CorePage, CoreError> {
-        assert!(!self.panic_if_called, "Core must NOT be called on this path");
+        assert!(
+            !self.panic_if_called,
+            "Core must NOT be called on this path"
+        );
         self.calls.fetch_add(1, Ordering::SeqCst);
         if self.return_err {
             return Err(CoreError::Status(500));
@@ -94,11 +106,17 @@ impl CoreAccess for FakeCore {
             .iter()
             .map(|(k, v)| (k.to_string(), v.clone()))
             .collect();
-        Ok(CorePage { items: self.items.clone(), total: self.total })
+        Ok(CorePage {
+            items: self.items.clone(),
+            total: self.total,
+        })
     }
 
     fn read_squad_ext(&self, _namespace: &str) -> Result<CoreSquadRead, CoreError> {
-        assert!(!self.panic_if_called, "Core must NOT be called on this path");
+        assert!(
+            !self.panic_if_called,
+            "Core must NOT be called on this path"
+        );
         self.read_calls.fetch_add(1, Ordering::SeqCst);
         if self.return_err {
             return Err(CoreError::Status(500));
@@ -107,7 +125,10 @@ impl CoreAccess for FakeCore {
     }
 
     fn replace_squad(&self, req: &CoreReplaceRequest) -> Result<CoreReplaceResult, CoreError> {
-        assert!(!self.panic_if_called, "Core must NOT be called on this path");
+        assert!(
+            !self.panic_if_called,
+            "Core must NOT be called on this path"
+        );
         self.replace_calls.fetch_add(1, Ordering::SeqCst);
         if self.return_err {
             return Err(CoreError::Status(500));
@@ -117,7 +138,14 @@ impl CoreAccess for FakeCore {
             slots: req
                 .slots
                 .iter()
-                .map(|s| (s.owned_card_id.clone(), s.index, s.is_captain, s.is_on_bench))
+                .map(|s| {
+                    (
+                        s.owned_card_id.clone(),
+                        s.index,
+                        s.is_captain,
+                        s.is_on_bench,
+                    )
+                })
                 .collect(),
             ext_payload: req.ext_payload.clone(),
             chemistry: req.client_reported.chemistry,
@@ -634,7 +662,6 @@ fn club_end_to_end_through_real_resolver_and_sends_game_header() {
     );
 }
 
-
 // ── Squad host: routing, PUT pipeline, authorization, coupled read-after-write ─
 
 use serde_json::json;
@@ -691,10 +718,26 @@ fn put_body(formation: &str, captain: i64, players: &[(i64, i64, i64)], custom:
 }
 
 fn gk() -> CoreOwnedItem {
-    item("oc-a", "card_a", 87, "GK", "Argentina", "Premier League", "Chelsea")
+    item(
+        "oc-a",
+        "card_a",
+        87,
+        "GK",
+        "Argentina",
+        "Premier League",
+        "Chelsea",
+    )
 }
 fn st() -> CoreOwnedItem {
-    item("oc-b", "card_b", 90, "ST", "Argentina", "Premier League", "Chelsea")
+    item(
+        "oc-b",
+        "card_b",
+        90,
+        "ST",
+        "Argentina",
+        "Premier League",
+        "Chelsea",
+    )
 }
 const ASSETS: &[(&str, u32)] = &[("card_a", 20801), ("card_b", 158023)];
 
@@ -714,7 +757,8 @@ fn spawn_mock_python_json(body: Value) -> (String, Recorded) {
             };
             let mut r = BufReader::new(s.try_clone().unwrap());
             if let Ok(Some(req)) = read_request(&mut r) {
-                rec2.lock().push((req.method.clone(), req.target.clone(), req.body.clone()));
+                rec2.lock()
+                    .push((req.method.clone(), req.target.clone(), req.body.clone()));
                 let head = format!(
                     "HTTP/1.1 200 OK\r\nContent-Type: application/json\r\nContent-Length: {}\r\nConnection: close\r\n\r\n",
                     text.len()
@@ -731,16 +775,40 @@ fn spawn_mock_python_json(body: Value) -> (String, Recorded) {
 
 #[test]
 fn classify_squad_and_usermassinfo_routes() {
-    assert_eq!(classify("PUT", "/ut/game/fifa17/squad/0"), Route::SquadReplace);
-    assert_eq!(classify("PUT", "/ut/game/fifa17/squad/3"), Route::SquadReplace);
-    assert_eq!(classify("GET", "/ut/game/fifa17/squad/list"), Route::SquadList);
-    assert_eq!(classify("GET", "/ut/game/fifa17/userMassInfo"), Route::UserMassInfo);
+    assert_eq!(
+        classify("PUT", "/ut/game/fifa17/squad/0"),
+        Route::SquadReplace
+    );
+    assert_eq!(
+        classify("PUT", "/ut/game/fifa17/squad/3"),
+        Route::SquadReplace
+    );
+    assert_eq!(
+        classify("GET", "/ut/game/fifa17/squad/list"),
+        Route::SquadList
+    );
+    assert_eq!(
+        classify("GET", "/ut/game/fifa17/userMassInfo"),
+        Route::UserMassInfo
+    );
     // /squad/active stays with Python (not numeric); GET squad/<n> is NOT a Rust
     // read route; a squad PUT is never a GET.
-    assert_eq!(classify("PUT", "/ut/game/fifa17/squad/active"), Route::Passthrough);
-    assert_eq!(classify("GET", "/ut/game/fifa17/squad/active"), Route::Passthrough);
-    assert_eq!(classify("GET", "/ut/game/fifa17/squad/0"), Route::Passthrough);
-    assert_eq!(classify("PUT", "/ut/game/fifa17/squad/list"), Route::Passthrough);
+    assert_eq!(
+        classify("PUT", "/ut/game/fifa17/squad/active"),
+        Route::Passthrough
+    );
+    assert_eq!(
+        classify("GET", "/ut/game/fifa17/squad/active"),
+        Route::Passthrough
+    );
+    assert_eq!(
+        classify("GET", "/ut/game/fifa17/squad/0"),
+        Route::Passthrough
+    );
+    assert_eq!(
+        classify("PUT", "/ut/game/fifa17/squad/list"),
+        Route::Passthrough
+    );
     assert_eq!(classify("GET", "/ut/game/fifa17/club"), Route::Club);
 }
 
@@ -752,8 +820,17 @@ fn put_full_replacement_commits_canonical_and_extension_and_acks_id0() {
     let (resolver, w) = resolver_with_wires(&items, ASSETS);
     let core = FakeCore::new(items.clone(), 2);
     let ent = entities();
-    let deps = SquadDeps { core: &core, resolver: &resolver, entities: &ent };
-    let body = put_body("f442", w["oc-a"], &[(0, w["oc-a"], 1), (1, w["oc-b"], 9)], "[1,2,3]");
+    let deps = SquadDeps {
+        core: &core,
+        resolver: &resolver,
+        entities: &ent,
+    };
+    let body = put_body(
+        "f442",
+        w["oc-a"],
+        &[(0, w["oc-a"], 1), (1, w["oc-b"], 9)],
+        "[1,2,3]",
+    );
 
     let (resp, log) = handle_put_squad(&body, &deps);
     assert_eq!(resp.status, 200, "{log:?}");
@@ -782,8 +859,17 @@ fn put_rejects_wire_id_owned_by_another_profile_core_unchanged() {
     let (resolver, w) = resolver_with_wires(&items, ASSETS);
     let core = FakeCore::new(vec![gk()], 1); // only oc-a owned
     let ent = entities();
-    let deps = SquadDeps { core: &core, resolver: &resolver, entities: &ent };
-    let body = put_body("f442", w["oc-a"], &[(0, w["oc-a"], 1), (1, w["oc-b"], 9)], "[]");
+    let deps = SquadDeps {
+        core: &core,
+        resolver: &resolver,
+        entities: &ent,
+    };
+    let body = put_body(
+        "f442",
+        w["oc-a"],
+        &[(0, w["oc-a"], 1), (1, w["oc-b"], 9)],
+        "[]",
+    );
 
     let (resp, log) = handle_put_squad(&body, &deps);
     assert_eq!(resp.status, 403, "resolvable != authorized");
@@ -798,9 +884,18 @@ fn put_rejects_unknown_wire_id() {
     let (resolver, w) = resolver_with_wires(&items, ASSETS);
     let core = FakeCore::new(items.clone(), 2);
     let ent = entities();
-    let deps = SquadDeps { core: &core, resolver: &resolver, entities: &ent };
+    let deps = SquadDeps {
+        core: &core,
+        resolver: &resolver,
+        entities: &ent,
+    };
     // 999_999_999 was never allocated → unresolvable.
-    let body = put_body("f442", w["oc-a"], &[(0, w["oc-a"], 1), (1, 999_999_999, 9)], "[]");
+    let body = put_body(
+        "f442",
+        w["oc-a"],
+        &[(0, w["oc-a"], 1), (1, 999_999_999, 9)],
+        "[]",
+    );
     let (resp, log) = handle_put_squad(&body, &deps);
     assert_eq!(resp.status, 400);
     assert_eq!(log.outcome, "unresolved_wire_ids");
@@ -813,8 +908,17 @@ fn put_rejects_duplicate_owned_item() {
     let (resolver, w) = resolver_with_wires(&items, ASSETS);
     let core = FakeCore::new(items.clone(), 2);
     let ent = entities();
-    let deps = SquadDeps { core: &core, resolver: &resolver, entities: &ent };
-    let body = put_body("f442", w["oc-a"], &[(0, w["oc-a"], 1), (1, w["oc-a"], 9)], "[]");
+    let deps = SquadDeps {
+        core: &core,
+        resolver: &resolver,
+        entities: &ent,
+    };
+    let body = put_body(
+        "f442",
+        w["oc-a"],
+        &[(0, w["oc-a"], 1), (1, w["oc-a"], 9)],
+        "[]",
+    );
     let (resp, log) = handle_put_squad(&body, &deps);
     assert_eq!(resp.status, 400);
     assert_eq!(log.outcome, "duplicate_owned_item");
@@ -828,7 +932,11 @@ fn put_core_failure_returns_error_never_python() {
     let (resolver, w) = resolver_with_wires(&items, ASSETS);
     let core = FakeCore::erroring();
     let ent = entities();
-    let deps = SquadDeps { core: &core, resolver: &resolver, entities: &ent };
+    let deps = SquadDeps {
+        core: &core,
+        resolver: &resolver,
+        entities: &ent,
+    };
     let body = put_body("f442", w["oc-a"], &[(0, w["oc-a"], 1)], "[]");
     let (resp, log) = handle_put_squad(&body, &deps);
     assert_eq!(resp.status, 502);
@@ -841,8 +949,17 @@ fn repeated_identical_put_is_idempotent() {
     let (resolver, w) = resolver_with_wires(&items, ASSETS);
     let core = FakeCore::new(items.clone(), 2);
     let ent = entities();
-    let deps = SquadDeps { core: &core, resolver: &resolver, entities: &ent };
-    let body = put_body("f442", w["oc-a"], &[(0, w["oc-a"], 1), (1, w["oc-b"], 9)], "[1,2,3]");
+    let deps = SquadDeps {
+        core: &core,
+        resolver: &resolver,
+        entities: &ent,
+    };
+    let body = put_body(
+        "f442",
+        w["oc-a"],
+        &[(0, w["oc-a"], 1), (1, w["oc-b"], 9)],
+        "[1,2,3]",
+    );
     let (r1, _) = handle_put_squad(&body, &deps);
     let (r2, _) = handle_put_squad(&body, &deps);
     assert_eq!(r1.body, br#"{"id":0}"#);
@@ -851,7 +968,10 @@ fn repeated_identical_put_is_idempotent() {
     assert_eq!(recs.len(), 2);
     assert_eq!(recs[0].slots, recs[1].slots, "canonical converges");
     assert_eq!(recs[0].formation, recs[1].formation);
-    assert_eq!(recs[0].ext_payload, recs[1].ext_payload, "extension converges");
+    assert_eq!(
+        recs[0].ext_payload, recs[1].ext_payload,
+        "extension converges"
+    );
 }
 
 // ── Coupled read-after-write ─────────────────────────────────────────────────
@@ -864,8 +984,17 @@ fn coupled_read_after_write_list_and_usermassinfo_agree() {
     let (resolver, w) = resolver_with_wires(&items, ASSETS);
     let core = FakeCore::new(items.clone(), 2);
     let ent = entities();
-    let deps = SquadDeps { core: &core, resolver: &resolver, entities: &ent };
-    let body = put_body("f442", w["oc-a"], &[(0, w["oc-a"], 1), (1, w["oc-b"], 9)], "[1,2,3]");
+    let deps = SquadDeps {
+        core: &core,
+        resolver: &resolver,
+        entities: &ent,
+    };
+    let body = put_body(
+        "f442",
+        w["oc-a"],
+        &[(0, w["oc-a"], 1), (1, w["oc-b"], 9)],
+        "[1,2,3]",
+    );
     let (put, _) = handle_put_squad(&body, &deps);
     assert_eq!(put.status, 200);
 
@@ -888,8 +1017,14 @@ fn coupled_read_after_write_list_and_usermassinfo_agree() {
     });
     let (py_url, _rec) = spawn_mock_python_json(py_body);
     let pass = PassClient::new(&py_url);
-    let (umi_resp, umi_log) =
-        handle_user_mass_info("GET", "/ut/game/fifa17/userMassInfo", &[], b"", &deps, &pass);
+    let (umi_resp, umi_log) = handle_user_mass_info(
+        "GET",
+        "/ut/game/fifa17/userMassInfo",
+        &[],
+        b"",
+        &deps,
+        &pass,
+    );
     assert_eq!(umi_log.outcome, "ok");
     let umi: Value = serde_json::from_slice(&umi_resp.body).unwrap();
 
@@ -903,7 +1038,10 @@ fn coupled_read_after_write_list_and_usermassinfo_agree() {
     let sq = &umi["squad"];
     assert_eq!(sq["personaId"], 42, "persona preserved from Python");
     assert_eq!(sq["formation"], "f442");
-    assert_eq!(sq["captain"], w["oc-a"], "captain is the wire id, not resourceId");
+    assert_eq!(
+        sq["captain"], w["oc-a"],
+        "captain is the wire id, not resourceId"
+    );
     let occ: Vec<&Value> = sq["players"]
         .as_array()
         .unwrap()
@@ -919,8 +1057,14 @@ fn coupled_read_after_write_list_and_usermassinfo_agree() {
     let p1 = occ.iter().find(|p| p["index"] == 1).unwrap();
     assert_eq!(p1["itemData"]["resourceId"], 158023);
     assert_eq!(p1["kitNumber"], 9);
-    assert!(umi["squad"]["players"].as_array().unwrap().iter().all(|p| p["itemData"]["id"] != 777),
-        "no Python squad content survives");
+    assert!(
+        umi["squad"]["players"]
+            .as_array()
+            .unwrap()
+            .iter()
+            .all(|p| p["itemData"]["id"] != 777),
+        "no Python squad content survives"
+    );
 
     // Content-Length matches the rewritten body.
     let cl = umi_resp
@@ -928,7 +1072,11 @@ fn coupled_read_after_write_list_and_usermassinfo_agree() {
         .iter()
         .find(|(k, _)| k.eq_ignore_ascii_case("content-length"))
         .map(|(_, v)| v.parse::<usize>().unwrap());
-    assert_eq!(cl, Some(umi_resp.body.len()), "Content-Length fixed after overlay");
+    assert_eq!(
+        cl,
+        Some(umi_resp.body.len()),
+        "Content-Length fixed after overlay"
+    );
 }
 
 #[test]
@@ -937,15 +1085,32 @@ fn read_path_is_bounded_no_per_slot_lookup() {
     let (resolver, w) = resolver_with_wires(&items, ASSETS);
     let core = FakeCore::new(items.clone(), 2);
     let ent = entities();
-    let deps = SquadDeps { core: &core, resolver: &resolver, entities: &ent };
-    let body = put_body("f442", w["oc-a"], &[(0, w["oc-a"], 1), (1, w["oc-b"], 9)], "[]");
+    let deps = SquadDeps {
+        core: &core,
+        resolver: &resolver,
+        entities: &ent,
+    };
+    let body = put_body(
+        "f442",
+        w["oc-a"],
+        &[(0, w["oc-a"], 1), (1, w["oc-b"], 9)],
+        "[]",
+    );
     handle_put_squad(&body, &deps);
     let reads_before = core.read_calls();
     let owned_before = core.calls();
     let (_r, log) = handle_squad_list(&deps);
     assert_eq!(log.outcome, "ok");
-    assert_eq!(core.read_calls() - reads_before, 1, "exactly one squad read");
-    assert_eq!(core.calls() - owned_before, 1, "exactly one batch owned fetch (no per-slot)");
+    assert_eq!(
+        core.read_calls() - reads_before,
+        1,
+        "exactly one squad read"
+    );
+    assert_eq!(
+        core.calls() - owned_before,
+        1,
+        "exactly one batch owned fetch (no per-slot)"
+    );
 }
 
 // ── Stale / Missing integrity ────────────────────────────────────────────────
@@ -968,52 +1133,84 @@ fn read_with_ext(ext: CoreExtState) -> CoreSquadRead {
 fn stale_extension_is_not_applied_on_reads() {
     let items = vec![gk()];
     let (resolver, _w) = resolver_with_wires(&items, ASSETS);
-    let core = FakeCore::new(items.clone(), 1)
-        .with_squad(read_with_ext(CoreExtState::Stale { schema_version: 1, payload: "{}".into() }));
+    let core = FakeCore::new(items.clone(), 1).with_squad(read_with_ext(CoreExtState::Stale {
+        schema_version: 1,
+        payload: "{}".into(),
+    }));
     let ent = entities();
-    let deps = SquadDeps { core: &core, resolver: &resolver, entities: &ent };
+    let deps = SquadDeps {
+        core: &core,
+        resolver: &resolver,
+        entities: &ent,
+    };
     let (resp, log) = handle_squad_list(&deps);
     assert_eq!(log.outcome, "stale_integrity");
     let v: Value = serde_json::from_slice(&resp.body).unwrap();
-    assert_eq!(v["squad"].as_array().unwrap().len(), 0, "stale never projected");
+    assert_eq!(
+        v["squad"].as_array().unwrap().len(),
+        0,
+        "stale never projected"
+    );
 }
 
 #[test]
 fn missing_extension_is_explicit_on_reads() {
     let items = vec![gk()];
     let (resolver, _w) = resolver_with_wires(&items, ASSETS);
-    let core =
-        FakeCore::new(items.clone(), 1).with_squad(read_with_ext(CoreExtState::Missing));
+    let core = FakeCore::new(items.clone(), 1).with_squad(read_with_ext(CoreExtState::Missing));
     let ent = entities();
-    let deps = SquadDeps { core: &core, resolver: &resolver, entities: &ent };
+    let deps = SquadDeps {
+        core: &core,
+        resolver: &resolver,
+        entities: &ent,
+    };
     let (resp, log) = handle_squad_list(&deps);
     assert_eq!(log.outcome, "missing_integrity");
     let v: Value = serde_json::from_slice(&resp.body).unwrap();
-    assert_eq!(v["squad"].as_array().unwrap().len(), 0, "missing never fabricated");
+    assert_eq!(
+        v["squad"].as_array().unwrap().len(),
+        0,
+        "missing never fabricated"
+    );
 }
 
 #[test]
 fn usermassinfo_never_serves_python_squad_on_integrity_failure() {
     let items = vec![gk()];
     let (resolver, _w) = resolver_with_wires(&items, ASSETS);
-    let core =
-        FakeCore::new(items.clone(), 1).with_squad(read_with_ext(CoreExtState::Missing));
+    let core = FakeCore::new(items.clone(), 1).with_squad(read_with_ext(CoreExtState::Missing));
     let ent = entities();
-    let deps = SquadDeps { core: &core, resolver: &resolver, entities: &ent };
+    let deps = SquadDeps {
+        core: &core,
+        resolver: &resolver,
+        entities: &ent,
+    };
     let py_body = json!({
         "userInfo": {"personaId": 7},
         "squad": {"id": 0, "players": [{"index": 0, "itemData": {"id": 777}, "kitNumber": 5}]},
     });
     let (py_url, _rec) = spawn_mock_python_json(py_body);
     let pass = PassClient::new(&py_url);
-    let (resp, log) =
-        handle_user_mass_info("GET", "/ut/game/fifa17/userMassInfo", &[], b"", &deps, &pass);
+    let (resp, log) = handle_user_mass_info(
+        "GET",
+        "/ut/game/fifa17/userMassInfo",
+        &[],
+        b"",
+        &deps,
+        &pass,
+    );
     assert_eq!(log.outcome, "missing_integrity");
     let v: Value = serde_json::from_slice(&resp.body).unwrap();
-    assert_eq!(v["userInfo"]["personaId"], 7, "unrelated fields still Python");
+    assert_eq!(
+        v["userInfo"]["personaId"], 7,
+        "unrelated fields still Python"
+    );
     // Rust owns squad: Python's squad (id 777) must NOT survive.
     assert!(v["squad"]["players"].as_array().unwrap().is_empty());
-    assert_eq!(v["squad"]["personaId"], 7, "persona preserved, squad emptied");
+    assert_eq!(
+        v["squad"]["personaId"], 7,
+        "persona preserved, squad emptied"
+    );
 }
 
 #[test]
@@ -1023,7 +1220,10 @@ fn unrelated_route_still_reaches_python() {
     let server = build_server(core, &py_url, None);
     let resp = server.handle("POST", "/ut/game/fifa17/packs/purchase", &[], b"{}");
     assert_eq!(resp.status, 200);
-    assert!(resp.headers.iter().any(|(k, _)| k.eq_ignore_ascii_case("x-from-python")));
+    assert!(resp
+        .headers
+        .iter()
+        .any(|(k, _)| k.eq_ignore_ascii_case("x-from-python")));
     assert_eq!(rec.lock().len(), 1, "reached Python");
 }
 
@@ -1031,23 +1231,54 @@ fn unrelated_route_still_reaches_python() {
 fn duplicate_definition_instances_stay_distinct_through_host() {
     // Two owned copies of ONE definition (card_a): distinct owned ids and wire
     // ids, one shared resourceId — must not collapse anywhere in the host.
-    let a = item("oc-a", "card_a", 87, "GK", "Argentina", "Premier League", "Chelsea");
-    let c = item("oc-c", "card_a", 87, "ST", "Argentina", "Premier League", "Chelsea");
+    let a = item(
+        "oc-a",
+        "card_a",
+        87,
+        "GK",
+        "Argentina",
+        "Premier League",
+        "Chelsea",
+    );
+    let c = item(
+        "oc-c",
+        "card_a",
+        87,
+        "ST",
+        "Argentina",
+        "Premier League",
+        "Chelsea",
+    );
     let items = vec![a, c];
     let (resolver, w) = resolver_with_wires(&items, &[("card_a", 20801)]);
     assert_ne!(w["oc-a"], w["oc-c"], "two copies get distinct wire ids");
     let core = FakeCore::new(items.clone(), 2);
     let ent = entities();
-    let deps = SquadDeps { core: &core, resolver: &resolver, entities: &ent };
-    let body = put_body("f442", w["oc-a"], &[(0, w["oc-a"], 1), (1, w["oc-c"], 7)], "[]");
+    let deps = SquadDeps {
+        core: &core,
+        resolver: &resolver,
+        entities: &ent,
+    };
+    let body = put_body(
+        "f442",
+        w["oc-a"],
+        &[(0, w["oc-a"], 1), (1, w["oc-c"], 7)],
+        "[]",
+    );
     let (put, _) = handle_put_squad(&body, &deps);
     assert_eq!(put.status, 200);
 
     let py = json!({"userInfo": {"personaId": 1}, "squad": {"players": []}});
     let (url, _r) = spawn_mock_python_json(py);
     let pass = PassClient::new(&url);
-    let (umi, _) =
-        handle_user_mass_info("GET", "/ut/game/fifa17/userMassInfo", &[], b"", &deps, &pass);
+    let (umi, _) = handle_user_mass_info(
+        "GET",
+        "/ut/game/fifa17/userMassInfo",
+        &[],
+        b"",
+        &deps,
+        &pass,
+    );
     let v: Value = serde_json::from_slice(&umi.body).unwrap();
     let occ: Vec<&Value> = v["squad"]["players"]
         .as_array()
@@ -1063,4 +1294,4 @@ fn duplicate_definition_instances_stay_distinct_through_host() {
     for p in &occ {
         assert_eq!(p["itemData"]["resourceId"], 20801, "shared asset id");
     }
-}
\ No newline at end of file
+}