merge: sync upstream v0.5.81 into MIBP fork

# Conflicts:
#	.gitignore
#	Dockerfile
#	open-sse/handlers/chatCore.js
#	open-sse/providers/registry/cline.js
#	open-sse/providers/registry/index.js
#	open-sse/services/usage.js
#	open-sse/utils/streamHandler.js
#	package.json
#	src/app/(dashboard)/dashboard/profile/page.js
#	src/app/(dashboard)/dashboard/providers/[id]/page.js

gitbook/content/en/providers/subscription.md

@@ -111,6 +111,27 @@ Model: cx/gpt-5.2-codex
 | `cx/gpt-5.2` | GPT 5.2 | General tasks |
 | `cx/gpt-5.1-codex` | GPT 5.1 Codex | Stable coding |
 
+### Image Generation
+
+The Codex image catalog includes `cx/gpt-5.6-sol-image`,
+`cx/gpt-5.6-terra-image`, and `cx/gpt-5.6-luna-image`, alongside the existing
+GPT 5.5, 5.4, and 5.3 image aliases. Select them under **Image → OpenAI Codex**
+in the dashboard, or discover them with `GET /v1/models/image` after connecting
+a Codex account.
+
+```bash
+curl http://localhost:20128/v1/images/generations \
+  -H "Authorization: Bearer $NINE_ROUTER_API_KEY" \
+  -H "Content-Type: application/json" \
+  -d '{"model":"cx/gpt-5.6-sol-image","prompt":"A blue square","size":"1024x1024"}'
+```
+
+These are 9Router aliases: the image adapter removes `-image` and sends the
+underlying model an `image_generation` tool through the Codex Responses API.
+The same endpoint accepts an `image` reference for edits. Image generation
+requires an eligible ChatGPT Plus or higher account; availability of each
+underlying model and its image tool depends on the connected account.
+
 ### Pro Tips
 
 - **5-hour rolling quota** - Fresh quota every 5 hours