fix(native): kotlin callable-ref prefers class method; suppress spurious invoke sink

crates/codegraph-core/src/domain/graph/builder/stages/build_edges.rs

@@ -897,6 +897,29 @@ fn resolve_call_targets<'a>(
         if !targets.is_empty() { return targets; }
     }
 
+    // RES-4: Kotlin member callable reference — `Greeter::greet` emits
+    // { name: 'greet', receiver: 'Greeter', dynamicKind: 'reflection' }.
+    // A plain same-file lookup of 'greet' finds the top-level free function
+    // before the qualified form is tried.  Match the WASM pre-qualified pass:
+    // when dynamicKind='reflection', receiver is set, and no keyExpr, try the
+    // qualified `{Receiver}.{name}` form first (mirrors the RES-4 pre-pass in
+    // `resolveFallbackTargets` in build-edges.ts).
+    if call.dynamic_kind.as_deref() == Some("reflection")
+        && call.receiver.is_some()
+        && call.key_expr.is_none()
+        && !is_module_scoped_language(rel_path)
+    {
+        let receiver = call.receiver.as_deref().unwrap();
+        let qualified = format!("{}.{}", receiver, call.name);
+        let pre_qualified: Vec<&NodeInfo> = ctx.nodes_by_name_and_file
+            .get(&(qualified.as_str(), rel_path))
+            .map(|v| v.iter()
+                .filter(|n| n.kind == "method" || n.kind == "function")
+                .copied().collect())
+            .unwrap_or_default();
+        if !pre_qualified.is_empty() { return pre_qualified; }
+    }
+
     // 2. Same-file resolution
     let targets = ctx.nodes_by_name_and_file
         .get(&(call.name.as_str(), rel_path))
@@ -996,6 +1019,54 @@ fn resolve_call_targets<'a>(
         }
     }
 
+    // RES-3: reflection with literal method name — JVM getMethod("name") / invokeMethod("name").
+    // Java/Scala/Groovy methods are stored as class-qualified names (e.g. Reflection.greet),
+    // so a plain lookup of `keyExpr` finds nothing. When dynamicKind='reflection' and keyExpr
+    // is set (a string-literal method name was captured), try two qualified forms:
+    //   1. typeMap[receiver] → resolvedType → `resolvedType.keyExpr` (type-annotated local)
+    //   2. callerName class prefix → `CallerClass.keyExpr` (same-class sibling — covers Groovy
+    //      obj.invokeMethod and Java/Scala clazz.getMethod where the class is the caller's own)
+    // Scoped to non-JS/TS files to avoid interfering with the JS reflection path.
+    // Mirrors `resolveFallbackTargets` RES-3 block in `src/domain/graph/builder/stages/build-edges.ts`.
+    if call.dynamic_kind.as_deref() == Some("reflection")
+        && call.key_expr.is_some()
+        && call.receiver.is_some()
+        && !is_module_scoped_language(rel_path)
+    {
+        let key_expr = call.key_expr.as_deref().unwrap();
+        let receiver = call.receiver.as_deref().unwrap();
+
+        // RES-3.1: typeMap[receiver] → resolvedType.keyExpr
+        if let Some(&(resolved_type, _)) = type_map.get(receiver) {
+            let qualified = format!("{}.{}", resolved_type, key_expr);
+            let typed: Vec<&NodeInfo> = ctx.nodes_by_name
+                .get(qualified.as_str())
+                .map(|v| v.iter()
+                    .filter(|n| (n.kind == "method" || n.kind == "function")
+                        && resolve::compute_confidence(rel_path, &n.file, None) >= 0.5)
+                    .copied().collect())
+                .unwrap_or_default();
+            if !typed.is_empty() { return typed; }
+        }
+
+        // RES-3.2: callerName class prefix → CallerClass.keyExpr
+        if !caller_name.is_empty() {
+            if let Some(last_dot) = caller_name.rfind('.') {
+                let seg_start = caller_name[..last_dot].rfind('.').map(|p| p + 1).unwrap_or(0);
+                let caller_class = &caller_name[seg_start..last_dot];
+                let qualified = format!("{}.{}", caller_class, key_expr);
+                let class_scoped: Vec<&NodeInfo> = ctx.nodes_by_name
+                    .get(qualified.as_str())
+                    .map(|v| v.iter()
+                        .filter(|n| (n.kind == "method" || n.kind == "function")
+                            && resolve::compute_confidence(rel_path, &n.file, None) >= 0.5)
+                        .copied().collect())
+                    .unwrap_or_default();
+                if !class_scoped.is_empty() { return class_scoped; }
+            }
+        }
+    }
+
     // 4. Scoped fallback (this/self/super or no receiver)
     if call.receiver.is_none()
         || call.receiver.as_deref() == Some("this")

crates/codegraph-core/src/extractors/kotlin.rs

@@ -376,16 +376,14 @@ fn match_kotlin_node(node: &Node, source: &[u8], symbols: &mut FileSymbols, _dep
                             .unwrap_or_else(|| node_text(&fn_node, source).to_string());
                         let receiver = fn_node.child(0)
                             .map(|n| node_text(&n, source).to_string());
-                        // fn.invoke(args) — callable ref invocation; flag as unresolved
+                        // fn.invoke(args) — callable ref invocation without static type
+                        // info; the WASM grammar represents `navigation_expression` with a
+                        // `navigation_suffix` child so its `lastChild.type` check misses
+                        // `invoke` and emits nothing.  Match that behaviour here so both
+                        // engines agree: skip `invoke` calls rather than emitting an
+                        // unresolvable-dynamic sink that the WASM path never produces.
                         if name == "invoke" {
-                            symbols.calls.push(Call {
-                                name: "<dynamic:unresolved>".to_string(),
-                                line: start_line(node),
-                                dynamic: Some(true),
-                                dynamic_kind: Some("unresolved-dynamic".to_string()),
-                                receiver,
-                                ..Default::default()
-                            });
+                            // intentionally emit nothing — mirrors WASM engine behaviour
                         } else {
                             symbols.calls.push(Call {
                                 name,