import os, datetime

AUTH_BLOCK = f"""
Digital Crystal Protocol — Authorship Propagation

Author: Donald Paul Smith aka FatherTimeSDKP
ORCID: 0009-0003-7925-1653
DOI(s): 10.17605/OSF.IO/DJA9G | 10.17605/OSF.IO/XMTQC | 10.17605/OSF.IO/E7GWN | 10.17605/OSF.IO/CM7WQ
Signature: FTSDKP::DPS::Kapnack::QCC::Crystal.v1
Timestamp: {datetime.datetime.utcnow().isoformat()}Z
License: Sovereign Substrate License v1.0 (immutable authorship, mandatory citation)
"""

EXTENSIONS = [".py", ".md", ".txt", ".json", ".csv"]

def propagate_authorship(path):
    with open(path, "r+", encoding="utf-8") as f:
        content = f.read()
        if "Digital Crystal Protocol — Authorship Propagation" not in content:
            f.seek(0, 0)
            f.write(AUTH_BLOCK + "\n\n" + content)

for root, _, files in os.walk("."):
    for file in files:
        if any(file.endswith(ext) for ext in EXTENSIONS):
            try:
                propagate_authorship(os.path.join(root, file))
            except Exception:
                pass