chore: import upstream snapshot with attribution

tests/unit/db-cli-tool-state.test.ts

@@ -0,0 +1,58 @@
+import { describe, it } from "node:test";
+import assert from "node:assert/strict";
+
+import {
+  saveCliToolLastConfigured,
+  getCliToolLastConfigured,
+  getAllCliToolLastConfigured,
+  deleteCliToolLastConfigured,
+  saveCliToolInitialConfig,
+  getCliToolInitialConfig,
+  deleteCliToolInitialConfig,
+} from "../../src/lib/db/cliToolState.ts";
+
+describe("cliToolState", () => {
+  const toolId = `test-tool-${Date.now()}`;
+
+  it("getCliToolLastConfigured returns null for unknown tool", () => {
+    assert.equal(getCliToolLastConfigured(`unknown-${Date.now()}`), null);
+  });
+
+  it("saveCliToolLastConfigured persists and retrieves", () => {
+    const ts = "2026-01-01T00:00:00.000Z";
+    saveCliToolLastConfigured(toolId, ts);
+    assert.equal(getCliToolLastConfigured(toolId), ts);
+  });
+
+  it("getAllCliToolLastConfigured returns all entries", () => {
+    const all = getAllCliToolLastConfigured();
+    assert.ok(toolId in all, "should contain saved tool");
+  });
+
+  it("deleteCliToolLastConfigured removes entry", () => {
+    const delId = `del-tool-${Date.now()}`;
+    saveCliToolLastConfigured(delId, "2026-01-01T00:00:00.000Z");
+    deleteCliToolLastConfigured(delId);
+    assert.equal(getCliToolLastConfigured(delId), null);
+  });
+
+  it("saveCliToolInitialConfig saves only on first call", () => {
+    const initId = `init-tool-${Date.now()}`;
+    const config = { foo: "bar" };
+    assert.equal(saveCliToolInitialConfig(initId, config), true, "first save should return true");
+    assert.equal(saveCliToolInitialConfig(initId, { baz: "qux" }), false, "second save should return false");
+    const loaded = getCliToolInitialConfig(initId);
+    assert.deepEqual(loaded, { foo: "bar" }, "should keep first config");
+  });
+
+  it("getCliToolInitialConfig returns null for unknown tool", () => {
+    assert.equal(getCliToolInitialConfig(`unknown-init-${Date.now()}`), null);
+  });
+
+  it("deleteCliToolInitialConfig removes entry", () => {
+    const delId = `del-init-${Date.now()}`;
+    saveCliToolInitialConfig(delId, { x: 1 });
+    deleteCliToolInitialConfig(delId);
+    assert.equal(getCliToolInitialConfig(delId), null);
+  });
+});