* fix(#3384): strip mcp__* tool grants from zcode-installed subagents
ZCode's dispatcher treats every mcp__<server>__* entry in an agent's
tools: frontmatter as a required MCP server and hard-fails the subagent
spawn (CONFIGURATION_ERROR) when it is not connected, whereas Claude Code
treats the same grants as an optional allowlist. ZCode shared Claude's
verbatim agents copy (converter: null), so all 8 MCP-granted agents
failed to spawn out of the box with zero MCP servers configured.
Add convertClaudeAgentToZcodeAgent — a line-surgical converter that
filters mcp__* entries out of the frontmatter tools: grant list (both
inline comma and YAML block-list shapes) and preserves every other byte.
Declare it on both of zcode's capability.json agents entries and cut
zcode over to the descriptor-driven agents path
(_DESCRIPTOR_AGENTS_RUNTIMES) so the legacy inline loop stops
deleting+re-copying the converted agents raw. Claude Code, Kimi, and
Gemini install behavior is unchanged.
* chore(#3384): link changeset fragment to pr 3483
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Co-authored-by: sim <sim@local>
967bddba37