chore: import upstream snapshot with attribution

tests/unit/connection-model-rules.test.ts

@@ -0,0 +1,47 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import {
+  getConnectionExcludedModels,
+  hasEligibleConnectionForModel,
+  isModelExcludedByConnection,
+  normalizeExcludedModelPatterns,
+} from "../../src/domain/connectionModelRules.ts";
+
+test("normalizeExcludedModelPatterns accepts arrays and CSV strings, trims values, and removes duplicates", () => {
+  assert.deepEqual(normalizeExcludedModelPatterns([" gpt-4o* ", "gpt-4o*", "", "**"]), ["gpt-4o*"]);
+  assert.deepEqual(normalizeExcludedModelPatterns("gpt-4.1*, gpt-4o*, gpt-4.1*"), [
+    "gpt-4.1*",
+    "gpt-4o*",
+  ]);
+});
+
+test("isModelExcludedByConnection matches both provider-scoped and raw model ids", () => {
+  const providerSpecificData = {
+    excludedModels: ["gpt-4o*", "claude-opus-*"],
+  };
+
+  assert.equal(isModelExcludedByConnection("openai/gpt-4o-mini", providerSpecificData), true);
+  assert.equal(isModelExcludedByConnection("gpt-4o-mini", providerSpecificData), true);
+  assert.equal(isModelExcludedByConnection("claude-sonnet-4-5", providerSpecificData), false);
+});
+
+test("hasEligibleConnectionForModel only returns true when at least one connection can serve the model", () => {
+  const connections = [
+    { providerSpecificData: { excludedModels: ["gpt-4o*"] } },
+    { providerSpecificData: { excludedModels: ["gpt-4.1*"] } },
+  ];
+
+  assert.equal(hasEligibleConnectionForModel(connections, "gpt-4o-mini"), true);
+  assert.equal(
+    hasEligibleConnectionForModel(
+      [
+        { providerSpecificData: { excludedModels: ["gpt-4o*"] } },
+        { providerSpecificData: { excludedModels: ["gpt-4o-mini"] } },
+      ],
+      "gpt-4o-mini"
+    ),
+    false
+  );
+  assert.deepEqual(getConnectionExcludedModels({ excluded_models: ["gpt-4o*"] }), ["gpt-4o*"]);
+});