v0.1.0

• Added: the first portable Agent Plugins 1.0.0
  package for Mailtea. One directory a compatible client loads to get the
  Mailtea MCP server (plugin.json + mcp.json, stdio via npx -y mailtea-mcp)
  and three skills: mailtea (send, schedule, manage email and newsletters),
  mailtea-email-design (the structured ops path, the email-safe HTML contract,
  and the render/QA loop), and mailtea-site-design (pages, presets, theme,
  draft → publish for the publication website).
• Auth stays client-managed. mcp.json carries no credentials by design; the
  client injects MAILTEA_API_TOKEN (and optionally MAILTEA_PUBLICATION_ID /
  MAILTEA_API_BASE_URL) into the MCP process.

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Released from mailtea-app/mailtea@4b9226c.