[AI] fix(memory): use fts-only fallback for unregistered adapter instead of empty string

xydt-tanshanshan · xydt-tanshanshan · commit 1dd9bccdb2a8 · 2026-06-15T16:54:50.000+08:00
Change resolveEmbeddingProviderFallbackModel fallbackSourceModel from empty string to fts-only so unregistered adapters produce a readable expectedModel instead of an empty string that causes permanent identity mismatch. Refs #90787
diff --git a/extensions/memory-core/src/memory/manager-reindex-state.test.ts b/extensions/memory-core/src/memory/manager-reindex-state.test.ts
@@ -293,7 +293,9 @@ describe("memory reindex state", () => {
       }),
     );
     expect(state.status).toBe("mismatched");
-    expect(state.reason).toContain("expected fts-only");
+    if (state.status === "mismatched") {
+      expect(state.reason).toContain("expected fts-only");
+    }
   });
 
   it("falls back to fts-only when provider.model is whitespace-only", () => {
diff --git a/extensions/memory-core/src/memory/manager-sync-ops.ts b/extensions/memory-core/src/memory/manager-sync-ops.ts
@@ -517,7 +517,7 @@ export abstract class MemoryManagerSyncOps {
               this.settings.provider,
             model:
               this.settings.model.trim() ||
-              resolveEmbeddingProviderFallbackModel(this.settings.provider, "", this.cfg),
+              resolveEmbeddingProviderFallbackModel(this.settings.provider, "fts-only", this.cfg),
           });
     const provider = hasProviderOverride
       ? params.provider!
