POST /prompt_manager/system/library/move starts "Move library", an
exclusive, non-cancellable job (database/library_move.py). It checks the
target volume's free space, copies the database with SQLite's backup API
from one read snapshot, verifies the copy (integrity check, every workflow
document, the same rows in every table), copies the safety and
pre-migration backups and config.json (owner-only, checked by size and
SHA-256), then publishes under the old file's write lock and switches the
live process (every PromptModel, the review and history observers, the
API's plans and health report). The old prompts.db and config.json are
renamed *.moved-to-<folder> only after the switch. A failure removes
everything it wrote and leaves the old library in use; a marker in the new
folder makes a restart after any crash pick the right library.
GET /prompt_manager/system/library and the Overview's "location" say where
the library lives and why; POST .../keep persists "Keep it here".
Vito Sansevero
edf7811454