Add goal progress resolver utility with extensive tests and DepartmentGoals refactor.

- Implemented `goalProgressResolver` utility for resolving progress keys, slices, and periods.
- Refactored `DepartmentGoals` to integrate `goalProgressResolver` for improved clarity and modularity.
- Updated progress calculations with cadence-aware key handling and fallback resolution.
- Add isLoading handling and loader animations to `DepartmentWeather` and improve `GET` request concurrency.

tests/unit/department-weather.spec.js

@@ -189,6 +189,29 @@ describe("DepartmentWeather", () => {
     expect(getFirstWashesCellText(wrapper)).toBe("9002");
   });
 
+  it("shows loading state while weather request is in flight", async () => {
+    const pending = createDeferred();
+    getObjectsMock.mockImplementationOnce(() => pending.promise);
+
+    const wrapper = mount(DepartmentWeather, {
+      props: {
+        department_ids: [1],
+        date_from: "2026-03-24",
+        date_to: "2026-03-24",
+      },
+    });
+
+    await nextTick();
+    expect(wrapper.find(".daily-metrics-loading").exists()).toBe(true);
+    expect(wrapper.find("table.table").exists()).toBe(false);
+
+    pending.resolve([makeEntry({ time: "06:00", washes: 4, hours: 2 })]);
+    await flushAll();
+
+    expect(wrapper.find(".daily-metrics-loading").exists()).toBe(false);
+    expect(wrapper.find("table.table").exists()).toBe(true);
+  });
+
   it("hides hour columns when both washes and hours are zero", async () => {
     getObjectsMock.mockResolvedValueOnce([
       makeEntry({ time: "00:00", washes: 0, hours: 0 }),