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--- name: project-platform-diagnose description: Overlay for environment-sensitive diagnosis — service startup, install issues, platform integration, and runtime smoke checks. Portable across C++ projects. --- # Project Platform Diagnose This is a diagnostic overlay, not a standalone workflow. Use alongside the repo's implementation skill when debugging environment-sensitive issues. ## When to use The problem involves build/install failures, runtime environment issues, platform integration, or headless/container behavior. ## Not for Logic bugs in repo-owned code (use the implementation skill directly), vendored dependency issues (use **project-vendor-boundary**), or config behavior (use **project-config-and-tests**). ## Rules - separate build/install failures from runtime failures - separate environment limits from app regressions - prefer built-in diagnostics and reproducible smoke checks before guessing - treat headless/container failures carefully when the feature expects a richer desktop or service environment