Support larger databases

[paulfitz]

Some UI features are only practical for medium-sized databases. We could do a better job of supporting essential operations on larger documents.

[fulldecent]

A great test for addressing this issue is at:

#901 (comment)

And our required performance metrics might be:

• Use a Docker container with 512 MB RAB
• Use web UI upload to load a 1 GB CSV database
• Use 10 simultaneous visitors to view random pages of that database

[rswgnu]

Excel has a limit of 1 million rows in a sheet. Business users are processing much larger datasets these days. So one motivation to use your tool would be efficient loading and processing of larger datasets, maybe using Polars under the hood.