fix(mam): keep the session ID on MAM and rerun Prowlarr's exact search

[calibrain]

Follow-up to #1390.

• The origin came from each result's infoUrl, matched by a regex that did
  not check the host, and the mam_id cookie had no domain. Any Prowlarr
  indexer returning a URL like https://evil.example?myanonamouse.net/t/1
  sent the session ID to evil.example. Requests now always go to
  https://www.myanonamouse.net (Prowlarr's only MAM URL), with the cookie
  as a header and redirects off. Only results from Prowlarr's
  MyAnonamouse indexer are looked up, and their URLs must be on
  myanonamouse.net.
• The lookup searched every category and read one page, so for common
  titles most of Prowlarr's results were missed (a "Dune" audiobook
  search: 56 audiobooks on the first 100 of 328 matches). It now reruns
  Prowlarr's exact search: the same query clean-up, the MAM main
  categories behind the Torznab categories searched (13/15/16 for
  audiobooks, 14 for e-books, all once expanded), and the MAM indexer's
  own search type, search-in options and languages. Further pages are
  read while IDs are missing, page 1 of every title first, at most 4
  requests per search.
• Failed requests back off for 1, 2, 4 ... up to 30 minutes. The 10th
  consecutive failure stops enrichment until Test MAM Session passes,
  the session ID changes, or Shelfmark restarts.
• The detail cache prunes expired entries instead of growing for as long
  as Shelfmark runs.