feat: add DeepSeek extreme reasoning tier

README.md

@@ -32,7 +32,7 @@ one Docker workspace per Open WebUI user on a dedicated execution host
 ```
 
 Open WebUI is pinned and lightly patched. Its model picker is replaced by two
-product-level choices: `Chat / Work` and `轻度 / 中 / 高`. Provider URLs,
+product-level choices: `Chat / Work` and `轻度 / 中 / 高 / 极高`. Provider URLs,
 provider model IDs, API keys, tool server settings, system prompts, and runtime
 parameters remain server-side.
 
@@ -43,6 +43,7 @@ The inference mapping is fixed:
 | 轻度 | `ChatGPT-5.6:Luna` |
 | 中 | `ChatGPT-5.6:Terra` |
 | 高 | `ChatGPT-5.6:Sol` |
+| 极高 | `deepseek-v4-pro`（Thinking，`reasoning_effort=max`） |
 
 ## Local development
 
@@ -82,6 +83,20 @@ test, with:
 ./scripts/verify.sh
 ```
 
+Run a live Work evaluation in a unique, disposable, network-disabled Docker
+workspace with:
+
+```bash
+set -a
+source /path/to/protected/deepseek.env
+set +a
+.venv/bin/python scripts/eval-live-work.py --model work-extreme
+```
+
+The evaluator reports latency, token usage, tool counts, completion evidence,
+and the generated file listing. It removes only the uniquely named evaluation
+container, volume, and network unless `--keep-workspace` is supplied.
+
 Run the disposable six-service integration stack with a deterministic fake
 model provider and exercise registration approval, both Agent loops, workspace
 isolation, and the one-way mode upgrade with: