Merge remote-tracking branch 'origin/master' into gitea/feature/end

Resolved conflicts taking origin/master (v0.5.55) as canonical, with local
features re-applied:
- runtime log level (LOG_LEVEL env + dashboard Settings → Logging, applied
  immediately and persisted across restarts)
- free/noAuth provider enable/disable toggle via providerStrategies.enabled
- parallel model testing (Test All Models / Test Selected Keys)

tests/unit/antigravity-quota-gemini-3.7.test.js

@@ -0,0 +1,61 @@
+import { describe, expect, it, vi, beforeEach } from "vitest";
+
+const proxyAwareFetch = vi.fn(async (url) => ({
+  ok: true,
+  status: 200,
+  json: async () => url.includes(":loadCodeAssist")
+    ? { cloudaicompanionProject: "project-1", currentTier: { name: "Pro" } }
+    : {
+        models: {
+          "gemini-3.7-flash-high": {
+            displayName: "Gemini 3.7 Flash (High)",
+            quotaInfo: { remainingFraction: 0.85, resetTime: "2026-08-25T12:00:00Z" },
+          },
+          "gemini-3.7-flash-medium": {
+            displayName: "Gemini 3.7 Flash (Medium)",
+            quotaInfo: { remainingFraction: 0.6, resetTime: "2026-08-25T12:00:00Z" },
+          },
+          "gemini-3.7-flash-low": {
+            displayName: "Gemini 3.7 Flash (Low)",
+            quotaInfo: { remainingFraction: 0.35, resetTime: "2026-08-25T12:00:00Z" },
+          },
+          "internal-model": {
+            displayName: "Internal",
+            isInternal: true,
+            quotaInfo: { remainingFraction: 0.5 },
+          },
+        },
+      },
+  text: async () => "{}",
+}));
+
+vi.mock("../../open-sse/utils/proxyFetch.js", () => ({
+  proxyAwareFetch,
+}));
+
+describe("Antigravity quota tracker: Gemini 3.7 Flash usage bars", () => {
+  beforeEach(() => proxyAwareFetch.mockClear());
+
+  it("returns Gemini 3.7 Flash tier quotas so the dashboard can render usage bars", async () => {
+    const { getAntigravityUsage } = await import("../../open-sse/services/usage/google.js");
+
+    const usage = await getAntigravityUsage("access-token", {});
+
+    expect(usage.quotas["gemini-3.7-flash-high"]).toMatchObject({
+      used: 150,
+      total: 1000,
+      remainingPercentage: 85,
+      displayName: "Gemini 3.7 Flash (High)",
+    });
+    expect(usage.quotas["gemini-3.7-flash-medium"]).toMatchObject({
+      used: 400,
+      total: 1000,
+      remainingPercentage: 60,
+    });
+    expect(usage.quotas["gemini-3.7-flash-low"]).toMatchObject({
+      used: 650,
+      total: 1000,
+      remainingPercentage: 35,
+    });
+  });
+});