Kiro conversion drops MCP servers and hooks

[isadeks]

When converting plugins to Kiro format using convert or install with --to kiro, MCP servers and hooks are not included in the output.

MCP servers: When a plugin uses .mcp.json (instead of defining mcpServers directly in plugin.json), the converter doesn't parse the file correctly and drops all MCP servers. Tested with the 4 AWS agent plugins from awslabs/agent-plugins — all 7 MCP servers across the plugins were skipped.

Additionally, the converter warns "Kiro only supports stdio" and skips HTTP/remote servers, but Kiro now supports remote MCP servers.

Hooks: Plugins that define hooks (e.g., PostToolUse) have them skipped during Kiro conversion. The converter warns that Kiro hooks use a different format but doesn't attempt conversion.

Reproduction:

git clone https://github.com/awslabs/agent-plugins.git

# MCP servers get dropped
bunx @every-env/compound-plugin convert ./agent-plugins/plugins/deploy-on-aws --to kiro

# Hooks get skipped
bunx @every-env/compound-plugin convert ./agent-plugins/plugins/aws-serverless --to kiro

Skills convert and activate correctly in Kiro, but without the MCP servers they depend on, they can't function.