docs: document llm runtime logs

README.md

@@ -62,8 +62,17 @@ Example:
 [llm:validated] task=article_optimizer ok=true
 ```
 
-The `raw=` field is truncated to 4000 characters to avoid log explosions. API
+The `raw=` field is truncated to 4000 characters to avoid log explosions. Set
-keys, prompts, system messages, and environment secrets are not logged.
+`LLM_LOG_RAW_LIMIT=0` to suppress raw response snippets, or set a larger number
+when diagnosing model output. API keys, prompts, system messages, and
+environment secrets are not logged.
+
+Workflow task names are:
+
+- `fact_extractor`
+- `article_optimizer`
+- `quality_inspector`
+- `targeted_rewriter`
 
 ## Commands