Preserve the renderer's `reset_cache` result when publishing
rebuilt paths so zoom changes invalidate Qt's cached graphics.
Retain the earlier live-debug provenance for cadence, negative
volume, repaint suppression, and downsample cache repair.
Prompt-IO: ai/prompt-io/opencode/20260903T232525Z_fadab3d2_prompt_io.md
(this commit msg was generated in some part by `codex` using
`gpt-6` (`openai`))