feat: add Chinese mainland LLM providers (DeepSeek, GLM, Kimi, Qwen)

[niuqun2003]

Summary

This PR integrates four popular Chinese mainland LLM providers into PentAGI, making the platform more accessible to users in China who rely on domestically available AI services.

New Providers

Provider	Company	API Endpoint
DeepSeek	DeepSeek AI	https://api.deepseek.com/v1
GLM (智谱AI)	Zhipu AI	https://open.bigmodel.cn/api/paas/v4
Kimi (月之暗面)	Moonshot AI	https://api.moonshot.cn/v1
Qwen (通义千问)	Alibaba Cloud	https://dashscope.aliyuncs.com/compatible-mode/v1

All four providers use the OpenAI-compatible API format and are implemented following the same pattern as the existing custom provider.

Changes

Backend

• backend/pkg/providers/deepseek/ — DeepSeek provider implementation
• backend/pkg/providers/glm/ — GLM provider implementation
• backend/pkg/providers/kimi/ — Kimi provider implementation
• backend/pkg/providers/qwen/ — Qwen provider implementation
• backend/pkg/providers/provider/provider.go — register new ProviderType / ProviderName constants
• backend/pkg/providers/providers.go — register providers in controller
• backend/pkg/config/config.go — add env vars: DEEPSEEK_API_KEY, GLM_API_KEY, KIMI_API_KEY, QWEN_API_KEY (+ *_SERVER_URL overrides)
• backend/pkg/server/models/providers.go — add new types to ProviderType.Valid() whitelist
• backend/pkg/graph/schema.graphqls — add new types to ProviderType enum and config fields
• backend/pkg/graph/model/models_gen.go — regenerated via gqlgen
• backend/migrations/sql/20260227_120000_add_cn_providers.sql — add new enum values to PROVIDER_TYPE

Frontend

• frontend/src/components/icons/deepseek.tsx — DeepSeek icon
• frontend/src/components/icons/glm.tsx — GLM icon
• frontend/src/components/icons/kimi.tsx — Kimi icon
• frontend/src/components/icons/qwen.tsx — Qwen icon
• frontend/src/components/icons/provider-icon.tsx — register new icons
• frontend/graphql-schema.graphql — add new provider fields to settingsProviders query
• frontend/src/graphql/types.ts — regenerated via graphql-codegen
• frontend/src/pages/settings/settings-providers.tsx — UI support for new provider types

Docker

• docker-compose.yml — expose new env vars to container

Configuration

To enable a provider, set the corresponding environment variable in .env:

# DeepSeek
DEEPSEEK_API_KEY=sk-...
DEEPSEEK_SERVER_URL=https://api.deepseek.com/v1  # optional override

# GLM (Zhipu AI)
GLM_API_KEY=...
GLM_SERVER_URL=https://open.bigmodel.cn/api/paas/v4  # optional override

# Kimi (Moonshot AI)
KIMI_API_KEY=...
KIMI_SERVER_URL=https://api.moonshot.cn/v1  # optional override

# Qwen (Alibaba Cloud)
QWEN_API_KEY=...
QWEN_SERVER_URL=https://dashscope.aliyuncs.com/compatible-mode/v1  # optional override

Test Plan

• Provider creation via Settings UI works for all four new types
• Agent configuration test passes when API key is set
• Clear error message shown when API key is missing (instead of misleading "missing OpenAI API key")
• Docker Compose correctly injects API keys into the container
• DB migration runs cleanly on fresh and existing databases

🤖 Generated with Claude Code

[asdek]

hey @niuqun2003

thank you for the PR!