Adds the edit/remaster/pull/permanence axis the cost model was missing:

- 4th cost bucket UPDATE: re-mastering an already-live release. Free on
  RouteNote; a new paid release on CD Baby; forces DistroKid to the Ultimate
  tier ($89.99/yr) for an in-place Audio Swap. Driven by a Remasters/year slider.
- Freedom & control matrix: per-option remaster / edit-metadata / takedown /
  if-you-stop-paying, glyph+text+colour (never hue alone). Surfaces the key fact
  that no DSP distributor swaps audio in place (a store rule), with Bandcamp the
  free-replace outlier.
- Ownership reframed: all options are non-exclusive (you keep 100% of masters);
  what differs is permanence, edit-freedom, portability.
- Softened the unverified RouteNote freeze-risk claim; flagged Premium pricing
  as contested pending verification.