Initial commit: Memind H5 portal with MindSpace, Plaza, and agent jobs.

Track application source and tests; exclude local env, user workspaces, and runtime data via .gitignore.

Co-authored-by: Cursor <cursoragent@cursor.com>

billing.test.mjs

@@ -0,0 +1,41 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { computeDeltaCostCents, normalizeTokenState } from './billing.mjs';
+
+const config = {
+  useBackendCost: false,
+  usdCnyRate: 7.2,
+  inputCentsPer1k: 2,
+  outputCentsPer1k: 6,
+  minBillCents: 1,
+};
+
+test('normalizeTokenState reads camelCase fields', () => {
+  const state = normalizeTokenState({
+    inputTokens: 10,
+    outputTokens: 20,
+    accumulatedInputTokens: 100,
+    accumulatedOutputTokens: 200,
+  });
+  assert.equal(state.accumulatedInputTokens, 100);
+  assert.equal(state.accumulatedOutputTokens, 200);
+});
+
+test('computeDeltaCostCents bills token deltas', () => {
+  const previous = { lastInputTokens: 1000, lastOutputTokens: 500 };
+  const current = normalizeTokenState({
+    accumulatedInputTokens: 2000,
+    accumulatedOutputTokens: 1500,
+  });
+  const cost = computeDeltaCostCents(previous, current, config);
+  assert.equal(cost, 8);
+});
+
+test('computeDeltaCostCents returns zero when no usage delta', () => {
+  const previous = { lastInputTokens: 1000, lastOutputTokens: 500 };
+  const current = normalizeTokenState({
+    accumulatedInputTokens: 1000,
+    accumulatedOutputTokens: 500,
+  });
+  assert.equal(computeDeltaCostCents(previous, current, config), 0);
+});