feat(llm-deepseek): configure max token defaults

examples/headless-agent/cordis.yml

@@ -4,8 +4,8 @@
 
 # The DeepSeek adapter. Swap to '@deepseek-ai/dsh-llm-pi-ai' for the pi-ai-backed
 # twin (same config shape; `reasoning: high` replaces thinking/reasoningEffort).
-# Shipped default: full thinking at max effort on every request (wire-only
-# defaults; they never enter the request header).
+# Shipped default: full thinking at max effort on every request. Exact-model
+# resolution materializes the effort before the request header is logged.
 - id: llm-deepseek
   name: '@deepseek-ai/dsh-llm-deepseek'
   config: