#185 DSL Test 10: Variable Passing Between Tasks

PROMPT: Create a workflow that: 1) Gets the current date, 2) Gets disk usage, 3) Sends an email with both the date and disk usage in the body. EXPECTED: Two shell tasks with result_key (date_result, disk_result), email task using {{date_result.stdout}} and {{disk_result.stdout}} in body. NO filesystem variable passing. VALIDATION: Email contains both values interpolated correctly.