docs: draft changelog #36 (#127)

Author: hussufo

content/docs/changelog/changelog-036.mdx

@@ -0,0 +1,47 @@
+---
+title: "Changelog #036"
+sidebarTitle: "Changelog #036"
+llm: true
+image: "/images/changelog/36.png"
+imageAlt: "Announcing Changelog #036"
+publishedAt: "2026-09-18"
+---
+import Image from 'next/image';
+
+<Image
+  src="/images/changelog/36.png"
+  alt="Announcing Changelog #036"
+  width={800}
+  height={400}
+/>
+Hey everyone. This one covers a longer stretch than usual: mostly billing and Wallet work, more detail in the session viewer, and a run of reliability fixes across session routing, archives, and browser connections.
+
+### ⭐ New
+
+*   Wallet now has purchase history and payment-method management: printable invoices and receipts, default-card selection, and removal of any card that is not the default.
+
+### 🔧 Improvements
+
+*   The Sessions API now returns active, remaining, and total concurrency quota as response headers, both when a session is created and when a request hits the concurrency limit.
+
+*   The session viewer has a fullscreen live view and keyboard seeking, plus reworked session details and timeline controls.
+
+*   A new Sessions API configuration guide collects recipes for proxies, CAPTCHA solving, timeouts, browser behavior, and network identity.
+
+*   The billing dashboard shows assigned Enterprise credits and usage rates, and session details now include proxy analytics per session.
+
+### 🐛 Bug Fixes
+
+*   Fixed routing, authentication, and WebSocket forwarding for session logs and agent traces on Box-backed sessions.
+
+*   Fixed WebSocket proxy cleanup so heavy connection load no longer exhausts API file descriptors, which caused timeouts and failed upgrades.
+
+*   Fixed session archive downloads so file changes trigger a fresh archive and concurrent downloads wait for the latest rebuild.
+
+*   Fixed repeated `/context` polling that could saturate browser file operations and slow down the whole browser machine.
+
+*   Fixed three billing problems: a restored balance now clears funds-based blocks automatically, a temporary Metronome failure no longer blanks the full billing dashboard, and concurrent signup requests no longer leave organizations blocked.
+
+*   Corrected region validation so requests targeting regions without live capacity return a clear validation error instead of a retryable 503.
+
+*   Fixed log redaction so credentials inside URL values are stripped before API and managed-browser telemetry is recorded.

content/docs/changelog/meta.json

@@ -3,6 +3,7 @@
   "root": true,
   "pages": [
     "---Changelog---",
+    "changelog-036",
     "changelog-035",
     "changelog-034",
     "changelog-033",