Engram v1.9.4 — Claude Code Plugin Source Optimization

Attempted to use git-subdir source type for the Claude Code marketplace plugin to avoid cloning the entire repo during install. Reverted due to compatibility issues.

What Changed

• Tried git-subdir source to reduce plugin install size (only clone .claude-plugin/ instead of the full repo)
• Reverted to relative source path after discovering compatibility issues
• Net effect: no functional change from v1.9.3