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Colby Mchenry
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* fix(upgrade): a Windows upgrade no longer breaks the install while CodeGraph is running (#2185) On Windows, `codegraph upgrade` renamed only node.exe aside and then Copy-Item'd the new bundle over current\. Any open agent session runs a CodeGraph MCP server from current\, which keeps the native kernel loaded, so the copy failed on lib\kernel\codegraph-kernel.node halfway through, leaving no node.exe and a mix of versions that no codegraph command could repair. Re-running install.ps1 failed the same way, because it Remove-Items current\. Both now share one PowerShell function (a test pins the two copies equal). The bundle is unpacked next to current\ (same volume), then swapped in file by file: every file being replaced or dropped is first renamed aside (Windows allows renaming a running exe or a loaded DLL, just not overwriting or deleting it), then the staged file is moved in. Any failure or interruption undoes every step. Renamed-aside files, including the node.exe.old-* left by earlier upgrades, are deleted on the next successful run once nothing holds them. The upgrade's exit code now tells whether the install was left unchanged or needs a reinstall, and the message says which. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs(changelog): Windows upgrade with CodeGraph running (#2185) Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>