feat: a held album below the quality you settle for, or holding a video rip, stays wanted for a better copy, and the import replaces the old tracks with their likes and plays carried over (M502 #5524)

- acquisition_settings.upgrade_until (default High quality lossy, Lidarr's
  cutoff, note #5527; "" is off), an "Upgrade until" row under Searching.
- The wanted worker judges held albums hourly: tier per format from size per
  second (the scanner records no bitrate), the album's worst. Below the
  cutoff it is wanted for quality; a video rip among its tracks always.
- The schedule searches upgrades weekly, after open wants; a release no
  better than the copy held is refused ("not_better").
- The import matches each file to the track it would replace (recording,
  then disc/track) and replaces it when it is a rip or the file is a better
  tier: over the same path in one rename, or filed beside it and the old
  track folded in (library.ReplaceTrack: file first, then foldTrackInto).
  Nothing better: the release is set aside.
- Collection › Upgrades (Lidarr's Cutoff Unmet); Suspect sources says when a
  clean copy was looked for instead of Lidarr's search.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/importer/verify.go

@@ -16,6 +16,8 @@ import (
 	"sort"
 	"strings"
 
+	"github.com/jackc/pgx/v5/pgtype"
+
 	"git.fabledsword.com/bvandeusen/minstrel/internal/release"
 )
 
@@ -111,6 +113,11 @@ type Want struct {
 	Year           int
 	PrimaryType    string
 	SecondaryTypes []string
+	// Upgrade: a held album wanted for a better copy (#5524), quality or
+	// rip; AlbumID is the library album it holds, whose tracks the import
+	// replaces.
+	Upgrade string
+	AlbumID pgtype.UUID
 }
 
 // Pair is a file matched to an edition's track, and what agreed.