Q75: charts and billing use full-period statistics computed per org

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/unit/billing-helpers.test.ts

@@ -1,18 +1,17 @@
 import { describe, expect, test } from "vitest";
 import { buildAgentSpend } from "../../src/renderer/src/pages/settings/billing-helpers";
-import type { AgentRecord, ProviderRequestRecord } from "../../src/shared/domain";
+import type { AgentRecord } from "../../src/shared/domain";
 
 const agent = (id: string, modelProviderId: string) => ({ id, name: id, modelProviderId, budgetCents: 1000 }) as AgentRecord;
-const call = (agentId: string | null, providerId: string, costCents: number | null) =>
-  ({ agentId, providerId, inputTokens: 100, outputTokens: 50, costCents }) as ProviderRequestRecord;
 
 describe("billing attribution", () => {
-  test("each call counts once for the agent that made it, not for everyone on the same provider", () => {
+  test("rows come from per-agent totals, highest spend first, agents without calls at zero", () => {
     const rows = buildAgentSpend([agent("ada", "prv_a"), agent("bo", "prv_a"), agent("cy", "prv_b")], [
-      call("ada", "prv_a", 10), call("ada", "prv_a", 5), call("bo", "prv_a", 1), call("cy", "prv_a", 2), call(null, "prv_a", 99),
+      { agentId: "ada", requests: 2, tokens: 300, costCents: 15 },
+      { agentId: "cy", requests: 1, tokens: 150, costCents: 2 },
     ]);
     expect(rows.map((row) => [row.agent.id, row.requestCount, row.tokens, row.spentCents])).toEqual([
-      ["ada", 2, 300, 15], ["cy", 1, 150, 2], ["bo", 1, 150, 1],
+      ["ada", 2, 300, 15], ["cy", 1, 150, 2], ["bo", 0, 0, 0],
     ]);
   });
 });