feat: release 2.0.9

docs/en/models/linkai.mdx

@@ -1,9 +1,15 @@
 ---
 title: LinkAI
-description: Unified access to multiple models via LinkAI platform
+description: Access text, vision, image, speech, and embedding capabilities through the LinkAI platform
 ---
 
-The [LinkAI](https://link-ai.tech) platform lets you flexibly switch between OpenAI, Claude, Gemini, DeepSeek, MiniMax, Qwen, Kimi, and other models, with support for knowledge base, workflows, plugins, and other Agent capabilities.
+A single `linkai_api_key` gives you access to all capabilities of mainstream vendors such as OpenAI, Claude, Gemini, DeepSeek, MiniMax, Qwen, Kimi, and Doubao.
+
+<Tip>
+  All capabilities below can be configured in one place via the "Model Management" page in the Web Console, with no need to manually edit the configuration file.
+</Tip>
+
+## Text Chat
 
 ```json
 {
@@ -14,8 +20,84 @@ The [LinkAI](https://link-ai.tech) platform lets you flexibly switch between Ope
 
 | Parameter | Description |
 | --- | --- |
-| `use_linkai` | Set to `true` to enable LinkAI interface |
-| `linkai_api_key` | Create at [LinkAI Console](https://link-ai.tech/console/interface) |
-| `model` | Leave empty to use the agent's default model. Can be switched flexibly on the platform. All models in the [model list](https://link-ai.tech/console/models) are supported |
+| `use_linkai` | Set to `true` to enable |
+| `linkai_api_key` | Create one in the [Console](https://link-ai.tech/console/interface) |
+| `model` | Can be any code from the [model list](https://link-ai.tech/console/models) |
 
-See the [API documentation](https://docs.link-ai.tech/platform/api) for more details.
+See [Model Service](https://link-ai.tech/console/models) for more.
+
+## Image Understanding
+
+Once configured, the Agent's Vision tool automatically calls multimodal models via the gateway, with no extra setup required. To manually specify a Vision model:
+
+```json
+{
+  "tools": {
+    "vision": {
+      "model": "gpt-5.4-mini"
+    }
+  }
+}
+```
+
+Available models: `gpt-4.1-mini`, `gpt-5.4-mini`, `qwen3.6-plus`, `doubao-seed-2-0-pro-260215`, `kimi-k2.6`, `claude-sonnet-4-6`, `gemini-3.1-flash-lite-preview`, etc.
+
+## Image Generation
+
+```json
+{
+  "skills": {
+    "image-generation": {
+      "model": "gpt-image-2"
+    }
+  }
+}
+```
+
+| Model ID | Alias |
+| --- | --- |
+| `gpt-image-2` | OpenAI |
+| `gemini-3.1-flash-image-preview` | Nano Banana 2 |
+| `gemini-3-pro-image-preview` | Nano Banana Pro |
+| `seedream-5.0-lite` | ByteDance Doubao Seedream |
+
+## Speech-to-Text (ASR)
+
+```json
+{
+  "voice_to_text": "linkai"
+}
+```
+
+ASR uses Whisper by default; credentials are automatically reused from `linkai_api_key`.
+
+## Text-to-Speech (TTS)
+
+The TTS gateway supports multiple underlying engines. The engine is selected by `text_to_voice_model`, and the available voices change with the engine.
+
+```json
+{
+  "text_to_voice": "linkai",
+  "text_to_voice_model": "doubao",
+  "tts_voice_id": "BV001_streaming"
+}
+```
+
+| `text_to_voice_model` | Engine |
+| --- | --- |
+| `tts-1` | OpenAI · Multi-language (voices like `alloy` / `nova` / `echo`, etc.) |
+| `doubao` | ByteDance Doubao · Rich Chinese voices |
+| `baidu` | Baidu · Chinese broadcaster voices |
+
+Voices differ by engine; we recommend selecting them visually in the Web Console under "Model Management → Text-to-Speech".
+
+## Embedding
+
+```json
+{
+  "embedding_provider": "linkai",
+  "embedding_model": "text-embedding-3-small"
+}
+```
+
+The default model is `text-embedding-3-small` (OpenAI-compatible). After changing the embedding, run `/memory rebuild-index` to rebuild the index.