Function store_result 

pub fn store_result(
    task: &Task,
    digest: &str,
    cache_root: &Path,
    logs: &TaskLogs,
    duration_ms: u64,
    exit_code: i32,
    policy_override: Option<CachePolicy>,
) -> Result<(), CacheError>

Store result after successful execution

Arguments

• task - The IR task definition
• digest - Pre-computed digest for this task
• cache_root - Root directory for cache storage
• logs - Captured stdout/stderr
• duration_ms - Execution duration
• exit_code - Exit code
• policy_override - Optional global policy override

Errors

Returns error if IO operations fail