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Step 1 of the config import rework. A database config (tags, downloads, channels, domains, playlists, repos, recently viewed) and the database now each carry an integer version, so an import can tell which side is newer without a clock (a Raspberry Pi's resets at boot): - config_version (new table) holds the database's version of each config. - An after_flush hook adds one to it for every config whose rows a flush changed, in the same transaction. Each config registers what it owns (register_ownership): models, optionally only some columns, optionally only some rows (a Collection's kind; a Download's Collection's kind). Raw SQL writes to owned tables count explicitly. - dump_config writes the database's version, read with the rows it saves; save() no longer adds one for these configs. - An import compares versions first: file == database or newer imports with deletes; file older (the database changed and was not saved before a restart) saves the database instead of undoing that change; no database row (a config this code never imported) imports without deletes. The import records the file's version last. - The Import button and backup imports apply the file whatever its version (import_forced). Importers only gate their existing deletes on the decision here; they are otherwise unchanged. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |
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