Fix README: remove misleading descriptions

- License badge: MIT → Open Core (accurate)
- Remove "open source" wording from security section (not open source)
- Remove duplicate OpenRouter entry in provider table
- Add Windows PowerShell examples alongside macOS commands
- 80% of users are on Windows

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

README.md

@@ -8,7 +8,7 @@
 
 <p align="center">
   <a href="https://github.com/romgX/openrelay/releases/latest"><img src="https://img.shields.io/github/v/release/romgX/openrelay?color=blue&label=download" alt="Latest Release"></a>
-  <a href="LICENSE"><img src="https://img.shields.io/badge/license-MIT-green" alt="License"></a>
+  <a href="LICENSE"><img src="https://img.shields.io/badge/license-Open%20Core-blue" alt="License"></a>
   <img src="https://img.shields.io/badge/platform-macOS%20%7C%20Windows-lightgrey" alt="Platform">
   <a href="https://t.me/openrelay_updates"><img src="https://img.shields.io/badge/Telegram-updates-blue?logo=telegram" alt="Telegram"></a>
   <a href="https://t.me/openrelay_chat"><img src="https://img.shields.io/badge/Telegram-chat-blue?logo=telegram" alt="Chat"></a>
@@ -63,15 +63,23 @@ Claude Pro 只能在 Claude Desktop 用。Kiro 配额只能在 Kiro 用。Groq
 
 你的 Claude Pro 订阅现在可以驱动 Claude Code、Aider、Continue、Goose、Amp，或任何支持 Anthropic/OpenAI API 的工具：
 
-```bash
-export ANTHROPIC_BASE_URL=http://localhost:18765
-export ANTHROPIC_API_KEY=unused
-# 搞定。Claude Code 现在使用你的 Claude Desktop 配额。
+```powershell
+# Windows (PowerShell)
+$env:ANTHROPIC_BASE_URL="http://localhost:18765"
+$env:ANTHROPIC_API_KEY="unused"
 ```
 
-想在 Aider 里用 Kiro 的免费 Claude Sonnet？改一下 URL：
 ```bash
-export ANTHROPIC_BASE_URL=http://localhost:18765/kiro
+# macOS / Linux
+export ANTHROPIC_BASE_URL=http://localhost:18765
+export ANTHROPIC_API_KEY=unused
+```
+
+搞定。Claude Code 现在使用你的 Claude Desktop 配额。
+
+想在 Aider 里用 Kiro 的免费 Claude Sonnet？改一下 URL：
+```
+ANTHROPIC_BASE_URL=http://localhost:18765/kiro
 ```
 
 ### 3. 一键配置所有 CLI 工具
@@ -146,7 +154,7 @@ openrelay --test    # 测试所有 Provider 连接
 
 **不记录请求内容** — 消息内容从不被日志记录、缓存或持久化。
 
-**可审计** — 凭据处理代码（[cookie.ts](src/cookie.ts)）开源可审。
+**可审计** — 凭据处理代码（[cookie.ts](src/cookie.ts)）可查看审计。
 
 详见 [DISCLAIMER.md](DISCLAIMER.md) 和 [PRIVACY.md](PRIVACY.md)。
 
@@ -217,15 +225,23 @@ Plus 22 direct API providers (Groq, Gemini, DeepSeek, Mistral, OpenRouter, etc.)
 
 Your Claude Pro subscription can now power Claude Code, Aider, Continue, Goose, Amp, or any tool that speaks Anthropic/OpenAI API:
 
-```bash
-export ANTHROPIC_BASE_URL=http://localhost:18765
-export ANTHROPIC_API_KEY=unused
-# That's it. Claude Code now uses your Claude Desktop quota.
+```powershell
+# Windows (PowerShell)
+$env:ANTHROPIC_BASE_URL="http://localhost:18765"
+$env:ANTHROPIC_API_KEY="unused"
 ```
 
-Want to use Kiro's free Claude Sonnet quota in Aider? Just change the URL:
 ```bash
-export ANTHROPIC_BASE_URL=http://localhost:18765/kiro
+# macOS / Linux
+export ANTHROPIC_BASE_URL=http://localhost:18765
+export ANTHROPIC_API_KEY=unused
+```
+
+That's it. Claude Code now uses your Claude Desktop quota.
+
+Want to use Kiro's free Claude Sonnet quota in Aider? Just change the URL:
+```
+ANTHROPIC_BASE_URL=http://localhost:18765/kiro
 ```
 
 ### 3. One-click setup for every CLI tool
@@ -303,7 +319,6 @@ When Groq's free quota runs out → automatic failover to Cerebras → then Samb
 | **Zhipu (GLM)** | Free credits on signup |
 | **Baidu (ERNIE)** | Free credits on signup |
 | **MiniMax** | Free credits on signup |
-| **OpenRouter** | 20 RPM, 50 req/day |
 
 ---
 
@@ -347,7 +362,7 @@ Open `http://localhost:18765` → everything is managed from the Web dashboard.
 
 **No request logging.** Message content is never logged, cached, or persisted.
 
-**Auditable.** The credential handling code ([cookie.ts](src/cookie.ts)) is open source for security review.
+**Auditable.** The credential handling code ([cookie.ts](src/cookie.ts)) is available for security review.
 
 See [DISCLAIMER.md](DISCLAIMER.md) and [PRIVACY.md](PRIVACY.md) for details.