fix(antigravity): separate Argon model fallback quotas

apps/server/src/provider/antigravityUsageLimits.test.ts

@@ -446,6 +446,47 @@ describe("Antigravity subscription limits", () => {
     }).pipe(Effect.scoped, Effect.provide(Layer.mergeAll(NodeServices.layer, NodeCrypto.layer))),
   );
 
+  it.effect("keeps Argon model quotas independent from other Gemini models in the fallback", () =>
+    Effect.gen(function* () {
+      const { probe } = yield* fixture({
+        summaryStatus: 404,
+        models: {
+          models: {
+            "gemini-4-argon-medium": {
+              modelProvider: "MODEL_PROVIDER_GOOGLE",
+              quotaInfo: { remainingFraction: 0.6 },
+              weeklyQuotaInfo: { remainingFraction: 0.6 },
+            },
+            "gemini-4-argon-high": {
+              modelProvider: "MODEL_PROVIDER_GOOGLE",
+              quotaInfo: { remainingFraction: 0.5 },
+              weeklyQuotaInfo: { remainingFraction: 0.5 },
+            },
+            "gemini-3.8-flash": {
+              modelProvider: "MODEL_PROVIDER_GOOGLE",
+              quotaInfo: { remainingFraction: 0.9 },
+              weeklyQuotaInfo: { remainingFraction: 0.9 },
+            },
+          },
+        },
+      });
+      const limits = yield* probe;
+      expect(limits.windows).toHaveLength(4);
+      const argon = limits.windows.filter((window) => window.label.startsWith("Gemini 4 Argon"));
+      expect(argon).toHaveLength(2);
+      expect(argon.every((window) => window.usedPercent === 50)).toBe(true);
+      expect(argon.find((window) => window.kind === "weekly")).toMatchObject({
+        id: "gemini-4-argon-weekly",
+        label: "Gemini 4 Argon · Weekly",
+        windowDurationMins: 10080,
+      });
+      expect(argon.find((window) => window.kind === "other")?.windowDurationMins).toBeUndefined();
+      expect(
+        limits.windows.find((window) => window.id === "gemini-weekly")?.usedPercent,
+      ).toBeCloseTo(10);
+    }).pipe(Effect.scoped, Effect.provide(Layer.mergeAll(NodeServices.layer, NodeCrypto.layer))),
+  );
+
   it.effect("merges quota groups that only one endpoint reports", () =>
     Effect.gen(function* () {
       const { probe } = yield* fixture({

apps/server/src/provider/antigravityUsageLimits.ts

@@ -152,8 +152,9 @@ function summaryWindows(summary: typeof Summary.Type, requestedAt: number) {
 function modelWindows(models: typeof Models.Type) {
   const windows = new Map<string, ServerProviderUsageWindow>();
   for (const [modelId, model] of Object.entries(models.models)) {
-    const family =
-      model.modelProvider === "MODEL_PROVIDER_GOOGLE" || modelId.startsWith("gemini-")
+    const family = modelId.startsWith("gemini-4-argon")
+      ? "Gemini 4 Argon"
+      : model.modelProvider === "MODEL_PROVIDER_GOOGLE" || modelId.startsWith("gemini-")
         ? "Gemini"
         : model.modelProvider === "MODEL_PROVIDER_ANTHROPIC" || modelId.startsWith("claude-")
           ? "Claude"
@@ -167,7 +168,7 @@ function modelWindows(models: typeof Models.Type) {
     ] as const) {
       if (!quota) continue;
       const window = quotaWindow(
-        `${family.toLowerCase()}-${suffix}`,
+        `${family.toLowerCase().replaceAll(" ", "-")}-${suffix}`,
         `${family} · ${suffix === "weekly" ? "Weekly" : "Reported quota"}`,
         quota,
         suffix === "weekly" ? "weekly" : "other",