fix(fifa17): key the kit home/away split on the carddbid, not assetid

Staging served `kits=2 kitsHome=0 kitsAway=0`: the split compared the catalog
`asset_id` against `fcc_kitcards.assetid` (14/15), but a kit's catalog
`asset_id` IS its carddbid (6300006), not that column, so neither family ever
matched.

The carddbid range is the same fact in the form we actually carry: across all
1482 kit rows, assetid 14 covers precisely the 828 `63xxxxx` ids and assetid 15
precisely the 654 `64xxxxx` ids, with no exceptions either way. Keying on the id
we already have avoids carrying `assetid` as a second source of truth for the
same split. Tests now use the real team-21 pair (6300006 home / 6400003 away).

Verified against the staging stack: `kits=2 kitsHome=1 kitsAway=1`, team-21
bucket 2, `?type=kit` still activeHomeKit/activeAwayKit, `?type=player` 12.

openfut-adapter-fifa17/src/fut/club_stats.rs

@@ -66,12 +66,20 @@ const S_KITS_HOME: i64 = 0x29;
 const S_KITS_AWAY: i64 = 0x2A;
 const S_BADGES: i64 = 0x2D;
 
-/// `fcc_kitcards.assetid` splits the kit table into the home and away families.
-/// Verified across all 1482 rows of the FIFA 17 kit table: assetid 14 covers
-/// exactly the `63xxxxx` carddbids (828 rows) and assetid 15 exactly the
-/// `64xxxxx` ones (654 rows), with no exceptions in either direction.
-const KIT_ASSET_HOME: i64 = 14;
-const KIT_ASSET_AWAY: i64 = 15;
+/// First `carddbid` of the AWAY kit family. `fcc_kitcards` is split into a
+/// `63xxxxx` home family and a `64xxxxx` away family, and the table's own
+/// `assetid` column agrees exactly: across all 1482 rows, assetid 14 covers
+/// precisely the 828 `63xxxxx` ids and assetid 15 precisely the 654 `64xxxxx`
+/// ids, with no exceptions either way. A kit's catalog `asset_id` IS its
+/// carddbid, so the id itself is the family key -- the `assetid` column is not
+/// carried on the wire and would be a second source of truth for the same fact.
+const KIT_AWAY_FLOOR: i64 = 6_400_000;
+
+/// Which kit family an owned kit belongs to. Only meaningful for
+/// [`ContentKind::Kit`]; the caller filters first.
+fn is_home_kit(kit: &ClubStatInput) -> bool {
+    kit.asset_id < KIT_AWAY_FLOOR
+}
 
 /// cardsubtypeid (staff family) -> stat id (STAFF_SUBTYPE_STAT).
 fn staff_stat(subtype: i64) -> Option<i64> {
@@ -240,11 +248,10 @@ pub fn club_stats_body(items: &[ClubStatInput], ctx: ContextField) -> Value {
         .iter()
         .filter(|item| matches!(item.kind, ContentKind::Kit))
         .collect();
-    let kits_with_asset =
-        |asset: i64| kits.iter().filter(|item| item.asset_id == asset).count() as i64;
+    let home = kits.iter().filter(|kit| is_home_kit(kit)).count() as i64;
     g.insert(S_KITS, kits.len() as i64);
-    g.insert(S_KITS_HOME, kits_with_asset(KIT_ASSET_HOME));
-    g.insert(S_KITS_AWAY, kits_with_asset(KIT_ASSET_AWAY));
+    g.insert(S_KITS_HOME, home);
+    g.insert(S_KITS_AWAY, kits.len() as i64 - home);
 
     let mut stat: Vec<Value> = g.iter().map(|(sid, v)| row(1, 0, *sid, *v)).collect();
 
@@ -344,22 +351,27 @@ mod tests {
             team_id: None,
         }
     }
-    /// A kit of the given family (`KIT_ASSET_HOME` / `KIT_ASSET_AWAY`) worn by
-    /// `team`.
-    fn kit_of(asset_id: i64, team: i64) -> ClubStatInput {
+    /// A kit worn by `team`. `carddbid` is the real `fcc_kitcards` id, which is
+    /// also the catalog `asset_id` and therefore the home/away family key.
+    fn kit_of(carddbid: i64, team: i64) -> ClubStatInput {
         ClubStatInput {
             kind: ContentKind::Kit,
             subtype: 9,
             rating: 0,
             rare: false,
-            asset_id,
+            asset_id: carddbid,
             nation_id: None,
             league_id: None,
             team_id: Some(team),
         }
     }
+    /// Real team-21 kits from `fcc_kitcards`: 6300006 is its home kit and
+    /// 6400003 its away kit.
+    const HOME_KIT: i64 = 6_300_006;
+    const AWAY_KIT: i64 = 6_400_003;
+
     fn kit() -> ClubStatInput {
-        kit_of(KIT_ASSET_HOME, 21)
+        kit_of(HOME_KIT, 21)
     }
 
     fn global(body: &Value) -> std::collections::HashMap<String, i64> {
@@ -432,9 +444,9 @@ mod tests {
     #[test]
     fn kit_counts_split_by_home_and_away_family() {
         let items = vec![
-            kit_of(KIT_ASSET_HOME, 21),
-            kit_of(KIT_ASSET_HOME, 38),
-            kit_of(KIT_ASSET_AWAY, 21),
+            kit_of(HOME_KIT, 21),
+            kit_of(6_300_010, 38),
+            kit_of(AWAY_KIT, 21),
         ];
         let g = global(&club_stats_body(&items, ContextField::Nation));
         assert_eq!(g["kits"], 3);
@@ -450,9 +462,9 @@ mod tests {
         with_team.team_id = Some(21);
         let items = vec![
             with_team,
-            kit_of(KIT_ASSET_HOME, 21),
-            kit_of(KIT_ASSET_AWAY, 21),
-            kit_of(KIT_ASSET_HOME, 38),
+            kit_of(HOME_KIT, 21),
+            kit_of(AWAY_KIT, 21),
+            kit_of(6_300_010, 38),
         ];
         let body = club_stats_body(&items, ContextField::Team);
         let kits_for = |team: i64| {