* Step one in populating the reading list with PG
This first attempt tries to recycle the `Search::ArticleSerializer` which is only
used in input in ES, but we're using it in output in PG.
For this reason it's currently 15.55x times slower
* Serialize only what is requested by the frontend
`Search::ArticleSerializer` which is only used in ES in the indexing step aims
to add as much info as possible for broader purposes, in this case
(with serialization in output) we should aim to save only what's requested from
the frontend.
* Optimize selection of articles columns
* Select only needed columns for users
* Compute total of reading list items
* Attach the basic filtering based on PG on the search controller
* Restructure in methods
* Add tags support
* Use LIKE on articles.cached_tag_list
* Fix tags as nil
* Fix default pagination
* Add optional FTS for reading list
* Reworded the tags comment explaining why
* Add index to reactions.status
* Fix total counter in Preact readingList component
* Fix total count in reading list backend search
* Add GIN index to articles.cached_tag_list
* Add service tests
* Add search request specs
* Added missing early return
* Update spec/requests/search_spec.rb
Co-authored-by: Julianna Tetreault <32834804+juliannatetreault@users.noreply.github.com>
* Extract MAX_PER_PAGE constant and add comments
Co-authored-by: Julianna Tetreault <32834804+juliannatetreault@users.noreply.github.com>
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