Nextest cover profile for cargo llvm-cov integration. Update existing test imports from load_workflow_from_str to load_single_workflow_from_str for backward compatibility.
29 tests covering full YAML-to-execution round trips: - Basic deno workflows (arithmetic, string output, inputs, multi-step) - Fetch with wiremock (GET JSON, POST, permission-denied) - Mixed shell + deno workflows (both orderings) - File-based deno steps and module imports - Error propagation with terminate behavior and on_failure hooks - Compiler verification (factories, permissions, timeout, env, modules) - Validation (reject missing config/script, accept valid configs) 162 total deno tests, 326 total workspace tests.
