test: 添加模型路由单元测试 (测试计划 05)

覆盖 isModelAlias、isModelFamilyAlias、getAPIProvider、
isFirstPartyAnthropicBaseUrl、firstPartyNameToCanonical，共 40 个测试用例。

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

src/utils/model/__tests__/model.test.ts

@@ -0,0 +1,92 @@
+import { describe, expect, test } from "bun:test";
+import { firstPartyNameToCanonical } from "../model";
+
+describe("firstPartyNameToCanonical", () => {
+  test("maps opus-4-6 full name to canonical", () => {
+    expect(firstPartyNameToCanonical("claude-opus-4-6-20250514")).toBe(
+      "claude-opus-4-6"
+    );
+  });
+
+  test("maps sonnet-4-6 full name", () => {
+    expect(firstPartyNameToCanonical("claude-sonnet-4-6-20250514")).toBe(
+      "claude-sonnet-4-6"
+    );
+  });
+
+  test("maps haiku-4-5", () => {
+    expect(firstPartyNameToCanonical("claude-haiku-4-5-20251001")).toBe(
+      "claude-haiku-4-5"
+    );
+  });
+
+  test("maps 3P provider format", () => {
+    expect(
+      firstPartyNameToCanonical("us.anthropic.claude-opus-4-6-v1:0")
+    ).toBe("claude-opus-4-6");
+  });
+
+  test("maps claude-3-7-sonnet", () => {
+    expect(firstPartyNameToCanonical("claude-3-7-sonnet-20250219")).toBe(
+      "claude-3-7-sonnet"
+    );
+  });
+
+  test("maps claude-3-5-sonnet", () => {
+    expect(firstPartyNameToCanonical("claude-3-5-sonnet-20241022")).toBe(
+      "claude-3-5-sonnet"
+    );
+  });
+
+  test("maps claude-3-5-haiku", () => {
+    expect(firstPartyNameToCanonical("claude-3-5-haiku-20241022")).toBe(
+      "claude-3-5-haiku"
+    );
+  });
+
+  test("maps claude-3-opus", () => {
+    expect(firstPartyNameToCanonical("claude-3-opus-20240229")).toBe(
+      "claude-3-opus"
+    );
+  });
+
+  test("is case insensitive", () => {
+    expect(firstPartyNameToCanonical("Claude-Opus-4-6-20250514")).toBe(
+      "claude-opus-4-6"
+    );
+  });
+
+  test("falls back to input for unknown model", () => {
+    expect(firstPartyNameToCanonical("unknown-model")).toBe("unknown-model");
+  });
+
+  test("differentiates opus-4 vs opus-4-5 vs opus-4-6", () => {
+    expect(firstPartyNameToCanonical("claude-opus-4-20240101")).toBe(
+      "claude-opus-4"
+    );
+    expect(firstPartyNameToCanonical("claude-opus-4-5-20240101")).toBe(
+      "claude-opus-4-5"
+    );
+    expect(firstPartyNameToCanonical("claude-opus-4-6-20240101")).toBe(
+      "claude-opus-4-6"
+    );
+  });
+
+  test("maps opus-4-1", () => {
+    expect(firstPartyNameToCanonical("claude-opus-4-1-20240101")).toBe(
+      "claude-opus-4-1"
+    );
+  });
+
+  test("maps sonnet-4-5", () => {
+    expect(firstPartyNameToCanonical("claude-sonnet-4-5-20240101")).toBe(
+      "claude-sonnet-4-5"
+    );
+  });
+
+  test("maps sonnet-4", () => {
+    expect(firstPartyNameToCanonical("claude-sonnet-4-20240101")).toBe(
+      "claude-sonnet-4"
+    );
+  });
+});