feat: complete MiniMax LLM provider integration

Add full MiniMax provider support across the entire stack:

Backend:
- Add MINIMAX to LiteLLMProvider enum in db.py
- Add MINIMAX mapping to all provider_map dicts in llm_service.py,
  llm_router_service.py, and llm_config.py
- Add Alembic migration (rev 106) for PostgreSQL enum
- Add MiniMax M2.5 example in global_llm_config.example.yaml

Frontend:
- Add MiniMax to LLM_PROVIDERS enum with apiBase
- Add MiniMax-M2.5 and MiniMax-M2.5-highspeed to LLM_MODELS
- Add MINIMAX to Zod validation schema
- Add MiniMax SVG icon and wire up in provider-icons

Docs:
- Add MiniMax setup guide in chinese-llm-setup.md

MiniMax uses an OpenAI-compatible API (https://api.minimax.io/v1)
with models supporting up to 204K context window.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/chinese-llm-setup.md

@@ -14,6 +14,7 @@ SurfSense 现已支持以下国产 LLM：
 - ✅ **阿里通义千问 (Alibaba Qwen)** - 阿里云通义千问大模型
 - ✅ **月之暗面 Kimi (Moonshot)** - 月之暗面 Kimi 大模型
 - ✅ **智谱 AI GLM (Zhipu)** - 智谱 AI GLM 系列模型
+- ✅ **MiniMax** - MiniMax 大模型 (M2.5 系列，204K 上下文)
 
 ---
 
@@ -197,6 +198,52 @@ API Base URL: https://open.bigmodel.cn/api/paas/v4
 
 ---
 
+## 5️⃣ MiniMax 配置 | MiniMax Configuration
+
+### 获取 API Key
+
+1. 访问 [MiniMax 开放平台](https://platform.minimaxi.com/)
+2. 注册并登录账号
+3. 进入 **API Keys** 页面
+4. 创建新的 API Key
+5. 复制 API Key
+
+### 在 SurfSense 中配置
+
+| 字段 | 值 | 说明 |
+|------|-----|------|
+| **Configuration Name** | `MiniMax M2.5` | 配置名称（自定义） |
+| **Provider** | `MINIMAX` | 选择 MiniMax |
+| **Model Name** | `MiniMax-M2.5` | 推荐模型<br>其他选项: `MiniMax-M2.5-highspeed` |
+| **API Key** | `eyJ...` | 你的 MiniMax API Key |
+| **API Base URL** | `https://api.minimax.io/v1` | MiniMax API 地址 |
+| **Parameters** | `{"temperature": 1.0}` | 注意：temperature 必须在 (0.0, 1.0] 范围内，不能为 0 |
+
+### 示例配置
+
+```
+Configuration Name: MiniMax M2.5
+Provider: MINIMAX
+Model Name: MiniMax-M2.5
+API Key: eyJxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+API Base URL: https://api.minimax.io/v1
+```
+
+### 可用模型
+
+- **MiniMax-M2.5**: 高性能通用模型，204K 上下文窗口（推荐）
+- **MiniMax-M2.5-highspeed**: 高速推理版本，204K 上下文窗口
+
+### 注意事项
+
+- **temperature 参数**: MiniMax 要求 temperature 必须在 (0.0, 1.0] 范围内，不能设置为 0。建议使用 1.0。
+- 两个模型都支持 204K 超长上下文窗口，适合处理长文本任务。
+
+### 定价
+- 请访问 [MiniMax 定价页面](https://platform.minimaxi.com/document/Price) 查看最新价格
+
+---
+
 ## ⚙️ 高级配置 | Advanced Configuration
 
 ### 自定义参数 | Custom Parameters
@@ -268,8 +315,8 @@ docker compose logs backend | grep -i "error"
 |---------|---------|------|
 | **文档摘要** | Qwen-Plus, GLM-4 | 平衡性能和成本 |
 | **代码分析** | DeepSeek-Coder | 代码专用 |
-| **长文本处理** | Kimi 128K | 超长上下文 |
-| **快速响应** | Qwen-Turbo, GLM-4-Flash | 速度优先 |
+| **长文本处理** | Kimi 128K, MiniMax-M2.5 (204K) | 超长上下文 |
+| **快速响应** | Qwen-Turbo, GLM-4-Flash, MiniMax-M2.5-highspeed | 速度优先 |
 
 ### 2. 成本优化
 
@@ -294,6 +341,7 @@ docker compose logs backend | grep -i "error"
 - [阿里云百炼文档](https://help.aliyun.com/zh/model-studio/)
 - [Moonshot AI 文档](https://platform.moonshot.cn/docs)
 - [智谱 AI 文档](https://open.bigmodel.cn/dev/api)
+- [MiniMax 文档](https://platform.minimaxi.com/document/Guides)
 
 ### SurfSense 文档
 

surfsense_backend/alembic/versions/106_add_minimax_to_litellmprovider_enum.py

@@ -0,0 +1,23 @@
+"""Add MINIMAX to LiteLLMProvider enum
+
+Revision ID: 106
+Revises: 105
+"""
+
+from collections.abc import Sequence
+
+from alembic import op
+
+revision: str = "106"
+down_revision: str | None = "105"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.execute("COMMIT")
+    op.execute("ALTER TYPE litellmprovider ADD VALUE IF NOT EXISTS 'MINIMAX'")
+
+
+def downgrade() -> None:
+    pass

surfsense_backend/app/agents/new_chat/llm_config.py

@@ -59,6 +59,7 @@ PROVIDER_MAP = {
     "DATABRICKS": "databricks",
     "COMETAPI": "cometapi",
     "HUGGINGFACE": "huggingface",
+    "MINIMAX": "openai",
     "CUSTOM": "custom",
 }
 

surfsense_backend/app/config/global_llm_config.example.yaml

@@ -183,6 +183,23 @@ global_llm_configs:
     use_default_system_instructions: true
     citations_enabled: true
 
+  # Example: MiniMax M2.5 - High-performance with 204K context window
+  - id: -8
+    name: "Global MiniMax M2.5"
+    description: "MiniMax M2.5 with 204K context window and competitive pricing"
+    provider: "MINIMAX"
+    model_name: "MiniMax-M2.5"
+    api_key: "your-minimax-api-key-here"
+    api_base: "https://api.minimax.io/v1"
+    rpm: 60
+    tpm: 100000
+    litellm_params:
+      temperature: 1.0  # MiniMax requires temperature in (0.0, 1.0], cannot be 0
+      max_tokens: 4000
+    system_instructions: ""
+    use_default_system_instructions: true
+    citations_enabled: true
+
 # =============================================================================
 # Image Generation Configuration
 # =============================================================================

surfsense_backend/app/db.py

@@ -215,6 +215,7 @@ class LiteLLMProvider(StrEnum):
     COMETAPI = "COMETAPI"
     HUGGINGFACE = "HUGGINGFACE"
     GITHUB_MODELS = "GITHUB_MODELS"
+    MINIMAX = "MINIMAX"
     CUSTOM = "CUSTOM"
 
 

surfsense_backend/app/services/llm_router_service.py

@@ -85,6 +85,7 @@ PROVIDER_MAP = {
     "ZHIPU": "openai",
     "GITHUB_MODELS": "github",
     "HUGGINGFACE": "huggingface",
+    "MINIMAX": "openai",
     "CUSTOM": "custom",
 }
 

surfsense_backend/app/services/llm_service.py

@@ -127,6 +127,7 @@ async def validate_llm_config(
                 "ALIBABA_QWEN": "openai",
                 "MOONSHOT": "openai",
                 "ZHIPU": "openai",  # GLM needs special handling
+                "MINIMAX": "openai",
                 "GITHUB_MODELS": "github",
             }
             provider_prefix = provider_map.get(provider, provider.lower())
@@ -277,6 +278,7 @@ async def get_search_space_llm_instance(
                     "ALIBABA_QWEN": "openai",
                     "MOONSHOT": "openai",
                     "ZHIPU": "openai",
+                "MINIMAX": "openai",
                 }
                 provider_prefix = provider_map.get(
                     global_config["provider"], global_config["provider"].lower()
@@ -350,6 +352,7 @@ async def get_search_space_llm_instance(
                 "ALIBABA_QWEN": "openai",
                 "MOONSHOT": "openai",
                 "ZHIPU": "openai",
+                "MINIMAX": "openai",
                 "GITHUB_MODELS": "github",
             }
             provider_prefix = provider_map.get(

surfsense_web/components/icons/providers/index.ts

@@ -12,6 +12,7 @@ export { default as FireworksAiIcon } from "./fireworksai.svg";
 export { default as GeminiIcon } from "./gemini.svg";
 export { default as GroqIcon } from "./groq.svg";
 export { default as HuggingFaceIcon } from "./huggingface.svg";
+export { default as MiniMaxIcon } from "./minimax.svg";
 export { default as MistralIcon } from "./mistral.svg";
 export { default as MoonshotIcon } from "./moonshot.svg";
 export { default as NscaleIcon } from "./nscale.svg";

surfsense_web/components/icons/providers/minimax.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill="currentColor" d="M21.6 4.8h-2.4l-4.2 7.2-3-5.16h-.01L9 12 4.8 4.8H2.4L9 16.14V20.4h2.4v-4.2h1.2v4.2h2.4v-4.26z"/></svg>

surfsense_web/contracts/enums/llm-models.ts

@@ -1525,6 +1525,20 @@ export const LLM_MODELS: LLMModel[] = [
 		provider: "GITHUB_MODELS",
 		contextWindow: "64K",
 	},
+
+	// MiniMax
+	{
+		value: "MiniMax-M2.5",
+		label: "MiniMax M2.5",
+		provider: "MINIMAX",
+		contextWindow: "204K",
+	},
+	{
+		value: "MiniMax-M2.5-highspeed",
+		label: "MiniMax M2.5 Highspeed",
+		provider: "MINIMAX",
+		contextWindow: "204K",
+	},
 ];
 
 // Helper function to get models by provider

surfsense_web/contracts/enums/llm-providers.ts

@@ -181,6 +181,13 @@ export const LLM_PROVIDERS: LLMProvider[] = [
 		description: "AI models from GitHub Marketplace",
 		apiBase: "https://models.github.ai/inference",
 	},
+	{
+		value: "MINIMAX",
+		label: "MiniMax",
+		example: "MiniMax-M2.5, MiniMax-M2.5-highspeed",
+		description: "High-performance models with 204K context",
+		apiBase: "https://api.minimax.io/v1",
+	},
 	{
 		value: "CUSTOM",
 		label: "Custom Provider",

surfsense_web/contracts/types/new-llm-config.types.ts

@@ -34,6 +34,7 @@ export const liteLLMProviderEnum = z.enum([
 	"COMETAPI",
 	"HUGGINGFACE",
 	"GITHUB_MODELS",
+	"MINIMAX",
 	"CUSTOM",
 ]);
 

surfsense_web/lib/provider-icons.tsx

@@ -15,6 +15,7 @@ import {
 	GeminiIcon,
 	GroqIcon,
 	HuggingFaceIcon,
+	MiniMaxIcon,
 	MistralIcon,
 	MoonshotIcon,
 	NscaleIcon,
@@ -85,6 +86,8 @@ export function getProviderIcon(
 			return <GroqIcon className={cn(className)} />;
 		case "HUGGINGFACE":
 			return <HuggingFaceIcon className={cn(className)} />;
+		case "MINIMAX":
+			return <MiniMaxIcon className={cn(className)} />;
 		case "MISTRAL":
 			return <MistralIcon className={cn(className)} />;
 		case "MOONSHOT":