feat: map objectives, SBC, squad battles, and match endpoints

Adds exact and prefix routes for endpoints observed in FIFA 23 FUT that
were not yet covered:
- GET /ut/game/fut/user/dynamicobjectives → GET /objectives
- POST /ut/game/fut/user/dynamicobjectives/{id}/milestones/{m}/claim
    → POST /objectives/{id}/claim
- GET /ut/game/fut/sbs/challenges[/{id}] → GET /sbc[/{id}]
- POST /ut/game/fut/sbs/challenges/{id}/sets/{setId}/trade → POST /sbc/submit
- POST /ut/game/fut/squadbattle/result → POST /matches/result
- POST /ut/game/fut/game/r → POST /matches/result
- GET /ut/game/fut/squads/user → GET /squad

Also fixes prefix-route method forwarding bug: prefix routes were
unconditionally returning method "GET" instead of the matched EA method.

Closes #3 #4

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/mapper.rs

@@ -381,6 +381,36 @@ const EXACT: &[ExactRoute] = &[
         core_method: "GET", core_path: "/notifications",
         notes: "FUT active messages → Core notifications (mapped to nearest equivalent)",
     },
+    // ── Dynamic objectives (FIFA 23 actual path) ──────────────────────────────
+    ExactRoute {
+        ea_method: "GET", ea_path: "/ut/game/fut/user/dynamicobjectives",
+        core_method: "GET", core_path: "/objectives",
+        notes: "FIFA 23 dynamic objectives list → Core objectives",
+    },
+    // ── SBS challenges (FIFA 23 uses /sbs/ not /sbc/) ────────────────────────
+    ExactRoute {
+        ea_method: "GET", ea_path: "/ut/game/fut/sbs/challenges",
+        core_method: "GET", core_path: "/sbc",
+        notes: "FIFA 23 SBS challenges list → Core SBC list",
+    },
+    // ── Squad Battles result (separate from rivals/result) ───────────────────
+    ExactRoute {
+        ea_method: "POST", ea_path: "/ut/game/fut/squadbattle/result",
+        core_method: "POST", core_path: "/matches/result",
+        notes: "Squad Battles match result → Core match result",
+    },
+    // ── Match submission (FIFA 23 uses /game/r) ───────────────────────────────
+    ExactRoute {
+        ea_method: "POST", ea_path: "/ut/game/fut/game/r",
+        core_method: "POST", core_path: "/matches/result",
+        notes: "FIFA 23 match result (short path /game/r) → Core match result",
+    },
+    // ── Squad list ────────────────────────────────────────────────────────────
+    ExactRoute {
+        ea_method: "GET", ea_path: "/ut/game/fut/squads/user",
+        core_method: "GET", core_path: "/squad",
+        notes: "FUT squad list for user → Core squad",
+    },
 ];
 
 // ── Prefix mappings (dynamic path segments after a known prefix) ───────────────
@@ -431,6 +461,36 @@ fn prefix_routes() -> &'static [PrefixRoute] {
             core_path_fn: |_| "/sbc/submit".to_string(),
             notes: "FUT SBC set submission → Core SBC submit",
         },
+        // /ut/game/fut/sbs/challenges/{id}         → GET /sbc/{id}
+        PrefixRoute {
+            ea_method: "GET",
+            ea_prefix: "/ut/game/fut/sbs/challenges/",
+            core_path_fn: |suffix| {
+                // suffix is "{id}" or "{id}/sets/{setId}" — strip extra segments
+                let id = suffix.split('/').next().unwrap_or(suffix);
+                format!("/sbc/{id}")
+            },
+            notes: "FIFA 23 SBS challenge detail → Core SBC by ID",
+        },
+        // /ut/game/fut/sbs/challenges/{id}/sets/{setId}/trade → POST /sbc/submit
+        PrefixRoute {
+            ea_method: "POST",
+            ea_prefix: "/ut/game/fut/sbs/challenges/",
+            core_path_fn: |_| "/sbc/submit".to_string(),
+            notes: "FIFA 23 SBS challenge trade → Core SBC submit",
+        },
+        // /ut/game/fut/user/dynamicobjectives/{id}/milestones/{m}/claim
+        //   → POST /objectives/{id}/claim
+        PrefixRoute {
+            ea_method: "POST",
+            ea_prefix: "/ut/game/fut/user/dynamicobjectives/",
+            core_path_fn: |suffix| {
+                // suffix is "{id}/milestones/{m}/claim" — extract just the obj id
+                let obj_id = suffix.split('/').next().unwrap_or(suffix);
+                format!("/objectives/{obj_id}/claim")
+            },
+            notes: "FIFA 23 dynamic objective claim → Core objective claim by ID",
+        },
         // /ut/game/fut/trade/{trade_id} (DELETE) → DELETE /market/listings/{trade_id}
         PrefixRoute {
             ea_method: "DELETE",
@@ -523,7 +583,7 @@ pub fn map_to_core(method: &str, path: &str) -> Option<CoreMapping> {
                 if !suffix.is_empty() {
                     let core_path = (r.core_path_fn)(suffix);
                     return Some(CoreMapping {
-                        method: "GET", // overridden per-route below
+                        method: r.ea_method,
                         core_path,
                         notes: r.notes,
                     });
@@ -720,14 +780,39 @@ mod tests {
     fn test_quick_sell_maps() {
         let m = map_to_core("DELETE", "/ut/game/fut/item/owned-111");
         assert!(m.is_some());
-        assert_eq!(m.unwrap().core_path, "/collection/owned-111");
+        let m = m.unwrap();
+        assert_eq!(m.core_path, "/collection/owned-111");
+        assert_eq!(m.method, "DELETE");
     }
 
     #[test]
     fn test_cancel_listing_maps() {
         let m = map_to_core("DELETE", "/ut/game/fut/trade/trade-222");
         assert!(m.is_some());
-        assert_eq!(m.unwrap().core_path, "/market/listings/trade-222");
+        let m = m.unwrap();
+        assert_eq!(m.core_path, "/market/listings/trade-222");
+        assert_eq!(m.method, "DELETE");
+    }
+
+    #[test]
+    fn test_prefix_routes_preserve_method() {
+        let cases = [
+            ("POST", "/ut/game/fut/draft/abc-123/pick", "POST"),
+            ("POST", "/ut/game/fut/champs/sess-456/result", "POST"),
+            ("DELETE", "/ut/game/fut/trade/trade-222", "DELETE"),
+            ("DELETE", "/ut/game/fut/item/owned-111", "DELETE"),
+            ("PUT", "/ut/game/fut/item/owned-999", "PUT"),
+            ("POST", "/ut/game/fut/store/pack/pack-789/open", "POST"),
+        ];
+        for (ea_method, path, expected_method) in cases {
+            let m = map_to_core(ea_method, path)
+                .unwrap_or_else(|| panic!("no mapping for {ea_method} {path}"));
+            assert_eq!(
+                m.method, expected_method,
+                "{ea_method} {path} → expected method {expected_method}, got {}",
+                m.method
+            );
+        }
     }
 
     #[test]