feat(plan): add plan category service with tests

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/__tests__/planCategory.test.ts

@@ -0,0 +1,86 @@
+import { describe, it, expect, afterAll } from "vitest";
+import prisma from "../config/database";
+import {
+  listPlanCategories,
+  createPlanCategory,
+  updatePlanCategory,
+  deactivatePlanCategory,
+  isCategoryKeyActive,
+  slugifyCategory,
+} from "../services/planCategory.service";
+
+const created: number[] = [];
+
+afterAll(async () => {
+  if (created.length) {
+    await prisma.plan_categories.deleteMany({ where: { id: { in: created } } });
+  }
+  await prisma.$disconnect();
+});
+
+describe("slugifyCategory", () => {
+  it("strips Czech diacritics and non-alphanumerics", () => {
+    expect(slugifyCategory("Cesta / Montáž")).toBe("cesta_montaz");
+    expect(slugifyCategory("Příprava")).toBe("priprava");
+  });
+});
+
+describe("plan category service", () => {
+  it("seeds are present and ordered", async () => {
+    const cats = await listPlanCategories(true);
+    const keys = cats.map((c) => c.key);
+    expect(keys).toContain("work");
+    expect(keys).toContain("other");
+  });
+
+  it("creates a category with a unique slug and next sort_order", async () => {
+    const res = await createPlanCategory({
+      label: "Test Kategorie ZZ",
+      color: "#123456",
+    });
+    if ("error" in res) throw new Error(res.error);
+    created.push(res.data.id);
+    expect(res.data.key).toBe("test_kategorie_zz");
+    expect(res.data.color).toBe("#123456");
+    expect(res.data.is_active).toBe(true);
+    expect(await isCategoryKeyActive("test_kategorie_zz")).toBe(true);
+  });
+
+  it("dedupes a colliding slug", async () => {
+    const res = await createPlanCategory({
+      label: "Test Kategorie ZZ",
+      color: "#222222",
+    });
+    if ("error" in res) throw new Error(res.error);
+    created.push(res.data.id);
+    expect(res.data.key).toBe("test_kategorie_zz_2");
+  });
+
+  it("updates label and color (key immutable)", async () => {
+    const res = await createPlanCategory({
+      label: "Test Upd ZZ",
+      color: "#aaaaaa",
+    });
+    if ("error" in res) throw new Error(res.error);
+    created.push(res.data.id);
+    const upd = await updatePlanCategory(res.data.id, {
+      label: "Test Upd2 ZZ",
+      color: "#bbbbbb",
+    });
+    if ("error" in upd) throw new Error(upd.error);
+    expect(upd.data.label).toBe("Test Upd2 ZZ");
+    expect(upd.data.color).toBe("#bbbbbb");
+    expect(upd.data.key).toBe("test_upd_zz");
+  });
+
+  it("deactivate hides the key from active check", async () => {
+    const res = await createPlanCategory({
+      label: "Test Deact ZZ",
+      color: "#cccccc",
+    });
+    if ("error" in res) throw new Error(res.error);
+    created.push(res.data.id);
+    await deactivatePlanCategory(res.data.id);
+    expect(await isCategoryKeyActive("test_deact_zz")).toBe(false);
+  });
+});