Class AutotagAndVectorizeContentAction

Params:

• Autotag: Bit, if set to 1, will autotag content from all source types.
• Vectorize: Bit, if set to 1, will embed tagged content items directly into the vector index.
• EmbedPendingChunks: Bit (optional, default 0). If set to 1, (re)embeds persisted ContentItemChunk rows whose EmbeddingStatus is still 'Pending', upserting their vectors. Independent of the other phases — used for migration backfill and error recovery. Bounded by MaxItems.
• Purge: Bit (optional, default 0). If set to 1, runs PurgeDeletedChunks after vectorization — removes the vectors of soft-deleted (superseded) ContentItemChunks from the 3rd-party store and flips those rows to 'Deleted'. Independent of Vectorize, so a purge-only run (Autotag=0, Vectorize=0, Purge=1 — e.g. scheduled cleanup) is valid. Bounded by MaxItems.

Uses plugin architecture: iterates all ContentSourceType records and resolves providers dynamically via ClassFactory using the DriverClass field.