[WRONG BRANCH] fix(slug): prefer self-namespaced exact matches in resolveSlugSelection

src/providers/slug-codec.ts

@@ -139,14 +139,16 @@ export function resolveSlugSelection(
   // `a/b` is a bare NATIVE id that happens to contain a slash. Treating every slash-bearing
   // selection as provider-qualified made `a/b` resolve against provider "a", so the same
   // collision reported ambiguous through the dash spelling and unambiguous through the slash
-  // spelling — the exact asymmetry this resolver exists to remove.
-  const qualified = selection.startsWith(`${provider}/`)
-    ? selection
-    : routedSlug(provider, selection);
+  // spelling — the exact asymmetry this resolver exists to remove. Prefer a known native exact
+  // match before interpreting the same text as a provider-qualified selection.
+  const ids = [...knownIds];
+  const qualified = ids.includes(selection) || !selection.startsWith(`${provider}/`)
+    ? routedSlug(provider, selection)
+    : selection;
   const selectionKey = slugEquivalenceKey(qualified);
   const matched: string[] = [];
   let exact: string | undefined;
-  for (const id of knownIds) {
+  for (const id of ids) {
     if (slugEquivalenceKey(routedSlug(provider, id)) !== selectionKey) continue;
     matched.push(id);
     if (id === selection || `${provider}/${id}` === selection) exact = id;

tests/slug-codec.test.ts

@@ -355,6 +355,24 @@ describe("#2491 one selection resolver reports what it actually matched", () =>
     expect(match.matched.sort()).toEqual(["a-b", "a/b"]);
   });
 
+  test("a self-namespaced native id is preferred over a routed suffix", () => {
+    const match = resolveSlugSelection(
+      "orcarouter",
+      "orcarouter/auto",
+      ["orcarouter/auto", "auto"],
+    );
+    expect(match.matched).toEqual(["orcarouter/auto"]);
+    expect(match.exact).toBe("orcarouter/auto");
+    expect(match.ambiguous).toBe(false);
+  });
+
+  test("a self-namespaced native id resolves when it is the only known id", () => {
+    const match = resolveSlugSelection("orcarouter", "orcarouter/auto", ["orcarouter/auto"]);
+    expect(match.matched).toEqual(["orcarouter/auto"]);
+    expect(match.exact).toBe("orcarouter/auto");
+    expect(match.ambiguous).toBe(false);
+  });
+
   test("an id absent from an incomplete roster still reports no match rather than guessing", () => {
     // Live discovery can omit a published id; the resolver must not invent one.
     const match = resolveSlugSelection("p", "missing", ["a-b"]);
@@ -370,4 +388,3 @@ describe("#2491 one selection resolver reports what it actually matched", () =>
     expect(match.exact).toBeUndefined();
   });
 });
-