import os
path="/home/claude/amd-agent-downloads/CareTeamRosterByProvider.csv"
size=os.path.getsize(path)
rows=0
first=None
with open(path, "r", encoding="utf-8", errors="replace") as f:
    for i,line in enumerate(f):
        if i==0: first=line.rstrip()[:200]
        rows+=1
print("size_bytes:", size)
print("total_lines:", rows)
print("header:", first)