favicon and some TODOs

src/engine.test.ts

@@ -27,6 +27,8 @@ function sel(overrides: Partial<Selections> = {}): Selections {
     targetDate: d("2026-04-10"),
     activeMissingPeriodIds: new Set(),
     extraExcludedDays: 0,
+    actualMealBlocks: null,
+    actualFlexDollars: null,
     ...overrides,
   };
 }
@@ -95,4 +97,51 @@ describe("estimate", () => {
     expect(r.consumedMealBlocks).toBe(0);
     expect(Number.isFinite(r.remainingMealBlocks)).toBe(true);
   });
+
+  it("reports activeDaysRemaining as total minus consumed", () => {
+    // Halfway: Jan 1 .. Feb 19 is 50 inclusive days of a 100-day window.
+    const r = estimate(config, sel({ targetDate: d("2026-02-19") }));
+    expect(r.activeDaysConsumed).toBe(50);
+    expect(r.activeDaysRemaining).toBe(50);
+  });
+
+  it("returns null comparisons when no actual balance is entered", () => {
+    const r = estimate(config, sel());
+    expect(r.blockComparison).toBeNull();
+    expect(r.flexComparison).toBeNull();
+  });
+});
+
+describe("balance comparison", () => {
+  // Halfway through the 100-day window: expected remaining = 100 blocks / 250 flex.
+  const halfway = () => sel({ targetDate: d("2026-02-19") });
+
+  it("flags a higher-than-expected balance as ahead", () => {
+    const r = estimate(config, { ...halfway(), actualMealBlocks: 130 });
+    expect(r.blockComparison?.status).toBe("ahead");
+    expect(r.blockComparison?.difference).toBeCloseTo(30);
+  });
+
+  it("flags a lower-than-expected balance as behind", () => {
+    const r = estimate(config, { ...halfway(), actualMealBlocks: 70 });
+    expect(r.blockComparison?.status).toBe("behind");
+    expect(r.blockComparison?.difference).toBeCloseTo(-30);
+  });
+
+  it("flags a matching balance as on track", () => {
+    const r = estimate(config, { ...halfway(), actualMealBlocks: 100 });
+    expect(r.blockComparison?.status).toBe("onTrack");
+  });
+
+  it("suggests a go-forward per-week rate from the actual balance", () => {
+    // 130 blocks over 50 remaining days => 2.6/day => 18.2/week.
+    const r = estimate(config, { ...halfway(), actualMealBlocks: 130 });
+    expect(r.blockComparison?.suggestedPerWeek).toBeCloseTo(18.2, 1);
+  });
+
+  it("suggests null per-week when no active days remain", () => {
+    const r = estimate(config, { ...sel(), actualMealBlocks: 0 });
+    expect(r.activeDaysRemaining).toBe(0);
+    expect(r.blockComparison?.suggestedPerWeek).toBeNull();
+  });
 });