MisarMail MCP Server v5.1.0

Changes

• Raise the floor on the weakest tool descriptions (b3f12bb)
• Add glama.json so the Glama listing can be claimed (8e28aad)
• assets: add a 400x400 icon for directory listings (5b39517)
• fix(plugin): sync the Claude plugin version with package.json (7a8774e)
• docs: canonical Smithery URLs and the published skills (7e2b6b2)
• fix(directories): check listings by content, and drop a dead target (af3a7e0)
• fix(directories): report what happened instead of always reporting success (9429f8b)