init: seed framework reference content from agent-runtimes main repo

harnesses/contexts/mac-ollama/v1/harness.yaml

@@ -0,0 +1,18 @@
+kind: context
+name: mac-ollama
+version: 1
+description: "Local Ollama inference on Mac (Docker Desktop)"
+requires: []
+provides: [claude-code]
+
+env:
+  # host.docker.internal is Docker Desktop-specific (macOS/Windows).
+  # This harness is NOT usable on Linux Docker or in K8s.
+  ANTHROPIC_BASE_URL: "http://host.docker.internal:11434"
+  ANTHROPIC_AUTH_TOKEN: "not-needed"
+  CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS: "1"
+  CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC: "1"
+  DISABLE_PROMPT_CACHING: "1"
+
+# No secrets_files — no API key needed for local inference
+# TODO: Add network_hosts for host.docker.internal when context harnesses support it