import json


def parse_json_lines(output: str) -> list[dict]:
    """Parse NDJSON mixed with human-readable log lines: each line that starts
    with '{' is treated as a JSON object, everything else is ignored. Used to
    pull the structured candidate lines out of a pipeline script's stdout."""
    out = []
    for line in output.splitlines():
        line = line.strip()
        if not line.startswith("{"):
            continue
        try:
            out.append(json.loads(line))
        except json.JSONDecodeError:
            continue
    return out