refactor(core): remove non-OpenAI SDK support and upgrade to OpenAI 6.x

[quanru]

No description provided.

[Copilot]

Pull Request Overview

This PR removes Anthropic and Azure OpenAI SDK support and upgrades the OpenAI SDK to 6.x, consolidating all AI calls through the standard OpenAI client.

• Removes Anthropic/Azure-specific code paths and dependencies
• Simplifies config parsing and client creation to OpenAI-only
• Updates docs to reflect OpenAI-only support and removes Azure/Anthropic sections

Reviewed Changes

Copilot reviewed 12 out of 13 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
packages/core/src/ai-model/service-caller/index.ts	Refactors client creation and call flow to OpenAI-only; removes proxy agents, Azure/Anthropic branches
packages/core/package.json	Drops Anthropic/Azure/proxy deps; upgrades openai to 6.3.0
packages/shared/src/env/decide-model-config.ts	Simplifies to always return OpenAI config only
packages/shared/src/env/constants.ts	Removes Azure/Anthropic keys from model config mapping
packages/shared/src/env/types.ts	Removes Azure/Anthropic env keys and interfaces; keeps OpenAI keys
packages/shared/src/env/helper.ts	Updates masking to only handle OpenAI fields
packages/shared/package.json	Adds openai 6.3.0 as a devDependency for shared types
packages/shared/tests/unit-test/env/helper.test.ts	Updates snapshot to match simplified config shape
packages/shared/tests/unit-test/env/decide-sdk.test.ts	Removes Azure/Anthropic decision tests; keeps default OpenAI tests
packages/core/tests/ai/connectivity.test.ts	Removes .env.anthropic coverage
apps/site/docs/en/model-provider.mdx	Removes Azure/Anthropic sections; keeps OpenAI config docs
apps/site/docs/zh/model-provider.mdx	Removes Azure/Anthropic sections; keeps OpenAI config docs

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

Comments suppressed due to low confidence (1)

packages/core/src/ai-model/service-caller/index.ts:1

• The Qwen-VL specific option vl_high_resolution_images was removed from commonConfig, which may degrade Qwen-VL and Qwen3-VL image handling. Please reintroduce the conditional spread to preserve previous behavior.

import { AIResponseFormat, type AIUsageInfo } from '@/types';

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}