docs: add crash dump debugging instructions to copilot-instructions.md (#5077) * docs: add crash dump debugging instructions to copilot-instructions.md Add a Crash Dump Debugging section covering prerequisites (CDB/WinDbg and mcp-windbg setup), artifact downloading, CDB analysis commands, mcp-windbg server usage, and common fault injection crash patterns. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * Address review comments on crash dump debugging docs - Fix symPath to use actual extracted path build\\x64\ - Add note about PDB directory structure after extraction - Make mcp-windbg section self-contained with all variable definitions - Replace hardcoded frame number with instructions to find the right frame - Clarify build artifact naming uses - pattern Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * Move crash dump debugging content to docs/CrashDumpDebugging.md Address review feedback from dthaler: move human-readable content (downloading artifacts, CDB analysis, common patterns) to docs/. Keep agent-specific content (install prerequisites, mcp-windbg server setup) in copilot-instructions.md with a link to the doc. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * Convert crash dump debugging to a Copilot skill file Move agent-specific crash dump debugging content (prerequisites, mcp-windbg setup, artifact download, CDB analysis commands) from copilot-instructions.md into .github/skills/debug-crash-dump/SKILL.md. This follows the existing skill pattern (build-ebpf, verify-bpf, etc.) so the content is only loaded on-demand when relevant, rather than consuming context tokens in every Copilot session. Also addresses review feedback: - Fix incorrect x64 in extracted PDB paths (build\\ not build\\x64\) - Replace # comments with ___BEGIN___COMMAND_DONE_MARKER___$LASTEXITCODE (CDB comment syntax) in WinDbg code blocks Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Signed-off-by: Alan Jowett * Add prompt file for debug-crash-dump skill Add .github/prompts/debug-crash-dump.prompt.md to match the pattern used by other skills (build-ebpf, verify-bpf, etc.). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Signed-off-by: Alan Jowett --------- Signed-off-by: Alan Jowett Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>