feat(presets): add CCSub provider across six apps

Add CCSub, a multi-model aggregator partner, as a preset for Claude, Codex, OpenCode, OpenClaw, Claude Desktop, and Hermes. Each preset carries the referral signup link as apiKeyUrl.

- Register the ccsub icon via iconUrls (1.1MB SVG URL import) + metadata
- Add partnerPromotion copy in zh/en/ja
- List CCSub in the sponsor section of all README locales
- Use gpt-5.5 and gemini-3.1-pro as the OpenAI/Gemini model ids

README.md

@@ -146,6 +146,11 @@ Register now via <a href="https://pateway.ai/?ch=etzpm8&aff=WB6M6F67#/">this lin
 <td>Atlas Cloud is a full-modal AI inference platform that gives developers a single AI API to access video generation, image generation, and LLM APIs. Instead of managing multiple vendor integrations, you connect once and get unified access to 300+ curated models across all modalities. Check out Atlas Cloud's new <a href="https://www.atlascloud.ai/coding-plan?utm_source=github&utm_campaign=cc-switch">coding plan</a> promotion for more budget-friendly API access!</td>
 </tr>
 
+<tr>
+<td width="180"><a href="https://www.ccsub.net/register?ref=Y6Z8DXEA"><img src="assets/partners/logos/ccsub.jpg" alt="CCSub" width="150"></a></td>
+<td>Thanks to CCSub for sponsoring this project! CCSub is a stable, affordable AI API relay platform — your drop-in replacement for a Claude.ai subscription. One API key gives you access to Claude Opus 4.8, Sonnet, Haiku, GPT-5, Gemini, and DeepSeek at roughly 30% of direct API cost, with no VPN required from anywhere in the world. Compatible with Claude Code, Codex, Cursor, Cline, Continue, Windsurf, and all major AI coding tools. Register via <a href="https://www.ccsub.net/register?ref=Y6Z8DXEA">this link</a> and get $5 free credit on sign-up.</td>
+</tr>
+
 </table>
 
 </details>