pi-web/.changeset/honor-archive-data-dir.md

@jmfederico/pi-web

@jmfederico/pi-web
patch

Store session archive metadata and archived session files under PI_WEB_DATA_DIR when configured, and automatically migrate a legacy archive on the first eligible session-daemon startup after upgrading.

Migration runs only when PI_WEB_DATA_DIR explicitly selects a different root, the legacy index and every referenced file form a complete valid archive, and the destination archive is pristine. PI WEB copies and verifies files across filesystem boundaries, rewrites their archivePath values, atomically commits the destination index, and only then removes legacy archive state. Ambiguous, invalid, partial, or coexisting layouts are left untouched instead of being merged or overwritten; active Pi session files are never moved.