docs: remove stale MiniMax M2.5 refs and add image generation docs

After the M2.7-only catalog trim (#54487), update 10 docs files:
- Replace removed M2.5/VL-01 model references across FAQ, wizard,
  config reference, local-models, and provider pages
- Make local-models guide model-agnostic (generic LM Studio placeholder)
- Add image-01 generation section to minimax.md
- Leave third-party catalogs (Synthetic, Venice) unchanged

docs/providers/minimax.md

@@ -14,6 +14,29 @@ OpenClaw's MiniMax provider defaults to **MiniMax M2.7**.
 
 - `MiniMax-M2.7`: default hosted text model.
 - `MiniMax-M2.7-highspeed`: faster M2.7 text tier.
+- `image-01`: image generation model (generate and image-to-image editing).
+
+## Image generation
+
+The MiniMax plugin registers the `image-01` model for the `image_generate` tool. It supports:
+
+- **Text-to-image generation** with aspect ratio control.
+- **Image-to-image editing** (subject reference) with aspect ratio control.
+- Supported aspect ratios: `1:1`, `16:9`, `4:3`, `3:2`, `2:3`, `3:4`, `9:16`, `21:9`.
+
+To use MiniMax for image generation, set it as the image generation provider:
+
+```json5
+{
+  agents: {
+    defaults: {
+      imageGenerationModel: { primary: "minimax/image-01" },
+    },
+  },
+}
+```
+
+The plugin uses the same `MINIMAX_API_KEY` or OAuth auth as the text models. No additional configuration is needed if MiniMax is already set up.
 
 ## Choose a setup
 

docs/providers/qwen.md

@@ -20,7 +20,7 @@ background.
 ## Recommended: Model Studio (Alibaba Cloud Coding Plan)
 
 Use [Model Studio](/providers/modelstudio) for officially supported access to
-Qwen models (Qwen 3.5 Plus, GLM-4.7, Kimi K2.5, MiniMax M2.5, and more).
+Qwen models (Qwen 3.5 Plus, GLM-4.7, Kimi K2.5, and more).
 
 ```bash
 # Global endpoint

docs/providers/qwen_modelstudio.md

@@ -74,7 +74,7 @@ override with a custom `baseUrl` in config.
 - **qwen3-coder-plus**, **qwen3-coder-next** — Qwen coding models
 - **GLM-5** — GLM models via Alibaba
 - **Kimi K2.5** — Moonshot AI via Alibaba
-- **MiniMax-M2.5** — MiniMax via Alibaba
+- **MiniMax-M2.7** — MiniMax via Alibaba
 
 Some models (qwen3.5-plus, kimi-k2.5) support image input. Context windows range from 200K to 1M tokens.