* test(agents): include Ollama in small live model matrix
* test: avoid Ollama cloud key in local live runs
* test: recognize Ollama env secret refs
* test: type Ollama live key fixtures
* test: prevent Ollama cloud auth in local live probes
* test: preserve equivalent Ollama live credentials
---------
Co-authored-by: Peter Steinberger <steipete@gmail.com>