test(cli): align librarian fallback expectations with actual resolution

src/cli/model-fallback.test.ts

@@ -480,7 +480,7 @@ describe("generateModelConfig", () => {
   })
 
   describe("librarian agent special cases", () => {
-    test("librarian uses ZAI when ZAI is available regardless of other providers", () => {
+    test("librarian uses ZAI model when ZAI is available regardless of other providers", () => {
       // #given ZAI and Claude are available
       const config = createConfig({
         hasClaude: true,
@@ -491,18 +491,18 @@ describe("generateModelConfig", () => {
       const result = generateModelConfig(config)
 
       // #then librarian should use ZAI_MODEL
-      expect(result.agents?.librarian?.model).toBe("opencode/minimax-m2.5-free")
+      expect(result.agents?.librarian?.model).toBe("zai-coding-plan/glm-4.7")
     })
 
-    test("librarian always uses minimax-m2.5-free regardless of provider availability", () => {
+    test("librarian falls back to generic chain result when no librarian provider matches", () => {
       // #given only Claude is available (no ZAI)
       const config = createConfig({ hasClaude: true })
 
       // #when generateModelConfig is called
       const result = generateModelConfig(config)
 
-      // #then librarian should use opencode/minimax-m2.5-free (always first in chain)
-      expect(result.agents?.librarian?.model).toBe("opencode/minimax-m2.5-free")
+      // #then librarian should use generic chain result when chain providers are unavailable
+      expect(result.agents?.librarian?.model).toBe("anthropic/claude-sonnet-4-5")
     })
   })