Summary:
- Add `windowsHide` when the ACPX runtime MCP proxy spawns child processes on Windows.
- Keep the changelog entry under `## Unreleased`.
- Use the preferred OpenClaw temp directory for generated context treemap PNGs so current guardrails pass.
Verification:
- `pnpm check:test-types`
- `pnpm check:temp-path-guardrails`
- `pnpm vitest run extensions/acpx/src/runtime-internals/mcp-proxy.test.ts`
- `git diff --check`
- GitHub CI passed, including Real behavior proof, auto-response, ClawSweeper dispatch, CodeQL, and full CI shards.
Closes#60672
Co-authored-by: KChow-ctrl <197636576+KChow-ctrl@users.noreply.github.com>
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