PR #71068: [codex] Add DeepSeek V4 model names

• Repository: openclaw/openclaw
• Author: stackjie2024
• State: closed | merged: False
• Link: https://github.com/openclaw/openclaw/pull/71068

Description (problem / solution / changelog)

Summary

• Add the official DeepSeek V4 API model names deepseek-v4-flash and deepseek-v4-pro to the bundled DeepSeek provider catalog and make deepseek/deepseek-v4-flash the onboarding default.
• Keep deepseek-chat and deepseek-reasoner as legacy compatibility aliases while aligning their thinking controls with DeepSeek's V4 modes.
• Add a DeepSeek-specific thinking payload wrapper that supports the official V4 model IDs, strips thinking payloads from deepseek-chat, preserves tool choice payloads, and avoids OpenAI reasoning_effort.

Why

DeepSeek is deprecating deepseek-chat and deepseek-reasoner on 2026-07-24. This keeps existing configs working while exposing the current V4 model names requested in #71006.

Validation

• pnpm test:extension deepseek
• node scripts/run-vitest.mjs run --config test/vitest/vitest.unit-fast.config.ts src/plugin-sdk/provider-stream.test.ts
• pnpm test:extensions:package-boundary:compile
• node scripts/check-src-extension-import-boundary.mjs --json
• node scripts/check-sdk-package-extension-import-boundary.mjs --json
• pnpm exec oxfmt --check extensions/deepseek/models.ts extensions/deepseek/index.ts extensions/deepseek/onboard.ts extensions/deepseek/index.test.ts docs/providers/deepseek.md src/plugin-sdk/provider-stream.ts src/plugin-sdk/provider-stream.test.ts
• git diff --check
• codex review -c model="gpt-5.4" --base origin/main

AI-Assisted Contribution Notes

• AI-assisted: yes, implemented with Codex.
• Testing level: targeted validation for the DeepSeek extension and shared provider-stream hook.
• Prompt/session context: requested DeepSeek V4 model-name support for #71006, then addressed bot and local Codex review feedback around DeepSeek thinking controls, legacy alias behavior, provider payload coupling, and avoiding unofficial model ID assumptions.
• Understanding: this changes the bundled DeepSeek model catalog/default/docs and adds a DeepSeek-specific thinking payload wrapper so the official V4 models use DeepSeek thinking.type, deepseek-reasoner stays thinking-on, and deepseek-chat stays non-thinking.
• Review follow-up: local Codex review reported no discrete regression in this patch, and addressed bot review conversations have been resolved.

Closes #71006

Changed files

• docs/providers/deepseek.md (modified, +9/-7)
• extensions/deepseek/index.test.ts (modified, +122/-6)
• extensions/deepseek/index.ts (modified, +31/-0)
• extensions/deepseek/models.ts (modified, +52/-15)
• extensions/deepseek/onboard.ts (modified, +1/-1)
• src/plugin-sdk/provider-stream.test.ts (modified, +75/-0)
• src/plugin-sdk/provider-stream.ts (modified, +69/-0)