{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://git.eeqj.de/sneak/chat/schema/commands/PUBKEY.json",
  "title": "PUBKEY",
  "description": "Announce or relay a user's public signing key. C2S: client announces key to channel or server. S2C: server relays to channel members. Protocol extension (not in RFC 1459). Body is a structured object (not an array) containing the key material.",
  "$ref": "../message.json",
  "properties": {
    "command": { "const": "PUBKEY" },
    "from": { "type": "string", "description": "Nick announcing the key (set by server on relay)." },
    "to": {
      "type": "string",
      "description": "Target: #channel to announce to channel members, or omit for server-wide announcement."
    },
    "body": {
      "type": "object",
      "description": "Key material.",
      "properties": {
        "alg": {
          "type": "string",
          "description": "Key algorithm.",
          "enum": ["ed25519"]
        },
        "key": {
          "type": "string",
          "description": "Base64-encoded public key."
        }
      },
      "required": ["alg", "key"],
      "additionalProperties": false
    }
  },
  "required": ["command", "body"],
  "examples": [
    { "command": "PUBKEY", "from": "alice", "body": { "alg": "ed25519", "key": "base64-encoded-pubkey" } },
    { "command": "PUBKEY", "from": "alice", "to": "#general", "body": { "alg": "ed25519", "key": "base64-encoded-pubkey" } }
  ]
}