release: v3.1.5 — backoff auto-decay fix + Chinese i18n overhaul

Changes:
- fix: auto-decay backoffLevel when rate limit window expires (PR #657 by @brendandebeasi)
- i18n: comprehensive Chinese translation rewrite (PR #658 by @only4copilot)
- docs: update CHANGELOG and OpenAPI spec

CHANGELOG.md

@@ -4,6 +4,18 @@
 
 ---
 
+## [3.1.5] — 2026-03-27
+
+### 🐛 Bug Fixes
+
+- **Backoff Auto-Decay** — Rate-limited accounts now auto-recover when their cooldown window expires, fixing a deadlock where high `backoffLevel` permanently deprioritized accounts (PR #657 by @brendandebeasi)
+
+### 🌍 i18n
+
+- **Chinese translation overhaul** — Comprehensive rewrite of `zh-CN.json` with improved accuracy (PR #658 by @only4copilot)
+
+---
+
 ## [3.1.4] — 2026-03-27
 
 ### 🐛 Bug Fixes

docs/openapi.yaml

@@ -1,7 +1,7 @@
 openapi: 3.1.0
 info:
   title: OmniRoute API
-  version: 3.1.4
+  version: 3.1.5
   description: |
     OmniRoute is a local-first AI API proxy router. It provides an OpenAI-compatible
     endpoint that routes requests to multiple AI providers with load balancing,

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "omniroute",
-  "version": "3.1.4",
+  "version": "3.1.5",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "omniroute",
-      "version": "3.1.4",
+      "version": "3.1.5",
       "hasInstallScript": true,
       "license": "MIT",
       "workspaces": [

package.json

@@ -1,6 +1,6 @@
 {
   "name": "omniroute",
-  "version": "3.1.4",
+  "version": "3.1.5",
   "description": "Smart AI Router with auto fallback — route to FREE & cheap models, zero downtime. Works with Cursor, Cline, Claude Desktop, Codex, and any OpenAI-compatible tool.",
   "type": "module",
   "bin": {