fix(usage): complete enterprise spending percentages

Derive missing remaining percentages so CLI spending output matches the Usage card. Preserve explicitly reported percentages and cover missing currency and absent rolling windows.

Co-authored-by: Matt Cowger <matt@cowger.us>
Co-authored-by: JasprW <wang@jaspr.me>

plugins/claude-usage-source/server/usage.test.ts

@@ -162,7 +162,7 @@ describe("claude usage source", () => {
       expect.objectContaining({ signal: expect.any(AbortSignal) }),
     );
   });
-  it("reports USD extra usage monthly limit and used credits in dollars", async () => {
+  it.each([false, true])("reports USD extra usage with rolling windows %j", async (hasWindows) => {
     writeClaudeCredentials(claudeHome, "at_valid");
     fetchApi = mockFetch(
       new Map([
@@ -170,7 +170,7 @@ describe("claude usage source", () => {
           "https://api.anthropic.com/api/oauth/usage",
           () =>
             jsonResponse({
-              ...makeClaudeResponse(),
+              ...(hasWindows ? makeClaudeResponse() : {}),
               extra_usage: {
                 is_enabled: true,
                 monthly_limit: 5000,
@@ -198,25 +198,28 @@ describe("claude usage source", () => {
     );
   });
 
-  it("does not report extra usage balances without explicit USD currency", async () => {
-    writeClaudeCredentials(claudeHome, "at_valid");
-    fetchApi = mockFetch(
-      new Map([
-        [
-          "https://api.anthropic.com/api/oauth/usage",
-          () =>
-            jsonResponse({
-              ...makeClaudeResponse(),
-              extra_usage: { monthly_limit: 5000, used_credits: 1250, currency: "EUR" },
-            }),
-        ],
-      ]),
-    );
+  it.each(["EUR", null, undefined])(
+    "does not report extra usage balances for currency %j",
+    async (currency) => {
+      writeClaudeCredentials(claudeHome, "at_valid");
+      fetchApi = mockFetch(
+        new Map([
+          [
+            "https://api.anthropic.com/api/oauth/usage",
+            () =>
+              jsonResponse({
+                ...makeClaudeResponse(),
+                extra_usage: { monthly_limit: 5000, used_credits: 1250, currency },
+              }),
+          ],
+        ]),
+      );
 
-    const claude = findProvider(await service().listUsage(), "claude");
+      const claude = findProvider(await service().listUsage(), "claude");
 
-    expect(claude.balances).toEqual([]);
-  });
+      expect(claude.balances).toEqual([]);
+    },
+  );
 
   it("accepts a null Claude resets_at when a window has no scheduled reset", async () => {
     writeClaudeCredentials(claudeHome, "at_valid");

plugins/codex-usage-source/server/usage.test.ts

@@ -142,6 +142,24 @@ test("reports enterprise individual spend limit percentage and reset", async ()
   });
 });
 
+test.each([
+  [{ used_percent: 5 }, 5, 95],
+  [{ remaining_percent: 95 }, 5, 95],
+  [{ used_percent: 5, remaining_percent: 90 }, 5, 90],
+  [{ used_percent: 110 }, 110, 0],
+])(
+  "completes individual spending percentages for %j",
+  async (individual_limit, usedPct, remainingPct) => {
+    const report = await fetchUsage(authInput(fixtureHome), async () =>
+      Response.json({ spend_control: { individual_limit } }),
+    );
+    expect(report).toMatchObject({
+      status: "available",
+      windows: [expect.objectContaining({ id: "individual_limit", usedPct, remainingPct })],
+    });
+  },
+);
+
 test("omits individual spend limit without a percentage", async () => {
   const report = await fetchUsage(authInput(fixtureHome), async () =>
     Response.json({ spend_control: { individual_limit: { reset_at: 1795996800 } } }),

plugins/codex-usage-source/server/usage.ts

@@ -243,14 +243,14 @@ export async function fetchUsage(
           const usedPct =
             limit.used_percent ??
             (limit.remaining_percent != null ? 100 - limit.remaining_percent : undefined);
-          if (usedPct === undefined && limit.remaining_percent == null) return [];
+          if (usedPct === undefined) return [];
           return [
             {
               id: "individual_limit",
               label: "Individual spend limit",
               summary: true,
               usedPct,
-              remainingPct: limit.remaining_percent,
+              remainingPct: limit.remaining_percent ?? Math.max(0, 100 - usedPct),
               resetsAt:
                 limit.reset_at != null ? new Date(limit.reset_at * 1000).toISOString() : null,
               tone: toneFromUsedPct(usedPct),