add-deltachat

SUSPICIOUS: the skill is mostly coherent for adding a DeltaChat channel, and its credential/data flows are broadly proportional to that purpose. The main concerns are supply-chain trust: unverified code copied from the user's `origin` branch and a pinned npm package that may include prebuilt binaries without checksum/signature verification; plaintext transport is also optionally allowed. I do not see strong evidence of deliberate credential theft or unrelated exfiltration.