ArWen 2.5.4

ArWen 2.5.4

Two-way nests and nest slots that open and close on the storm.

New:

• Two-way nest feedback. feedback = 1 runs WRF's feedback transaction with
  WRF's parent smoothers, pinned bitwise to the Fortran, on both the native
  and prepared-tree runners. Off by default; feedback = 0 runs are
  byte-identical to 2.5.3.
• Pressure spawn and retire triggers. A dormant nest slot opens when a low
  deepens and retires when it fills. configs/cyclone_nest_slots_12km.toml
  ships three slots with rearm.
• Storm-following upgrades. The tracker centres on the 850 hPa height
  minimum inside a 50 km disc and refines through a finer nest; a
  containment nest slides the mover's parent while the mover stays
  earth-fixed.
• Statics corridors. --statics-corridor seals child-resolution statics at
  preparation time, so a prepared bundle hosts a moving nest with no
  runtime geography.
• A track file. [relocation.track] writes the vortex track from the same
  fix that steers the nest. output_level picks the reported surfaces
  without touching what steers, and the eight-surface cap is gone.
• Tracker defaults: level_hpa 850, radius_km 50. Sea-level tracking is
  level_hpa = 0; the threshold bands are disjoint, so a config that means
  one and reads as the other refuses at load.
• --cycle latest resolves for every registered source from its own
  registry row. A reanalysis has a latest like anything else.
• A prepared-tree run with a live follower checkpoints and resumes,
  including across a move, byte-identical.

Fixed:

• A moved nest keeps its surface-radiation carriers; the shipped radiation
  defaults no longer refuse at the first move.
• Spawn receipts append per boundary instead of rewriting the ledger.
• run-plan --estimate on a missing config path refuses by name instead of
  a traceback.
• A resumed run publishes real outgoing longwave instead of zeros.
• A forecast whose nest moved can be resumed; the move chain replays on
  restore.
• Sizing and pace estimates work on an install with no GPU runtime.

Two-way feedback, the storm-following upgrades, the track file and the OLR
restart carry were contributed by Roch.