v0.9.3

Changed

• Refreshed the welcome banner. The subtitle now reads "MCP servers, skills & plugins" (plugins were missing). Command descriptions are tightened so every row fits on one line — previously the mirror row wrapped and garbled ($syncthis mirror / <primary>) on narrow terminals because its description overflowed the command column. mcp and skills are now separate rows (they're distinct commands), and mirror is surfaced second as a headline command. No command behavior changed — banner copy only.