v0.10.0

Added

• mirror now decomposes a plugin's bundled MCP servers, not just its skills. A Claude plugin can bundle MCP servers (a root .mcp.json or a manifest mcpServers field). Previously mirror surfaced only the bundled skills to the non-plugin agents and silently dropped those servers. Now it lifts them into each non-plugin agent's own MCP config too — ${CLAUDE_PLUGIN_ROOT} resolved to the plugin's install dir, servers that still need a Claude-only variable skipped rather than written broken. Additive and conflict-safe: a server name already present with a different config is left untouched and reported (same policy as union sync). Claude primary only. So one syncthis mirror claude-code now makes a plugin's full portable content (skills and MCP) reachable everywhere, not just on the plugin-capable agents.
• Goose support — the 12th MCP-sync agent. New adapter for ~/.config/goose/config.yaml (YAML extensions). Maps canonical MCP to Goose's field names (cmd/args/envs/uri), type-tags stdio/streamable_http/sse, and preserves Goose's built-in extensions (developer, memory, …) untouched. Goose gets union MCP sync, plugin→MCP decomposition, and skills automatically. Honors XDG_CONFIG_HOME exactly as Goose does.
• Pi as a skills-only target. Pi (badlogic/pi-mono) ships without native MCP by design, so it has no MCP adapter — but it now receives skills via the cohort (npx skills add -a pi).

Changed

• Skill cohort and MCP cohort are now distinct. mcpCohort() = the non-plugin agents that have a native MCP adapter (targets for plugin→MCP decomposition); skillCohort() = that set plus skills-only agents like Pi. Skills reach more agents than native MCP sync does, and the two no longer have to be the same list.