[Bug Report] ZCode Subagent 3GB+ RAM Memory Leak & profile.model Override Fallback

Bug Summary & Technical Feedback

Community developer https://github.com/0Cymantek0 reported critical performance bugs and model resolution failures in the latest ZCode release:

1. 3GB+ RAM Memory Optimization Failure

Single subagents consume nearly 3GB+ RAM running basic non-intensive commands (e.g. grep searches) without build or compilation tasks.

2. Subagent Model Override Fallback Bug

• Subagents ignore configured subagent models (profile.model) during child model resolution and fall back to the parent session default.
• builtInModelOverrides loads settings correctly, but ZCode fails to apply profile.model during execution.
• Model level aliases (haiku, sonnet, opus) exposed to the orchestrator model all resolve to the parent session default.

3. Community Workaround Script

Oxygen authored a temporary patch script (Set-ZCodeSubagentModels.ps1 & subagent-models.json) to enforce explicit subagent model mappings (ocg/glm-5.2).

More information on the patch user applied:
https://discordapp.com/channels/1346756824233148527/1531925713517543554/1531930066865356971

Regards,
Roman M.

• Contributor / Ambassador at Z.ai
• The Vibe Coder's Blog on Telegram:
  https://t.me/VibeCodePrompterSystem

Start by reproducing the reported memory use with a basic grep command and reviewing the community workaround files Set-ZCodeSubagentModels.ps1 and subagent-models.json. Trace how builtInModelOverrides and profile.model are resolved for child subagents; done means memory use is reduced and configured models, including haiku, sonnet, and opus aliases, no longer fall back to the parent default.