Add live skeleton-mode recruit class replacement

[eric-levinson]

Summary

• add a guarded live-class replace command that generates a Brooks recruit class and writes it into the verified live Player, Recruit, and Player-string surfaces
• support skeleton mode only for live generation; free mode is intentionally unavailable so EA rank, star, position, geography, HS/JUCO identity, NIL, and recruiting state remain intact
• generate names, ratings, archetypes, development traits, abilities, heads, and portraits while preserving hometown when Brooks omits it and continuing to skip gear
• snapshot every target, batch writes, verify every batch, and automatically roll back verified prior batches on failure
• locate sparse skeleton surfaces from exact pre-write records and resolve duplicate string mirrors through verified allocation adjacency

Why

Free-mode generation reassigned class-structure fields while leaving EA recruiting identity/state attached to the original rows. In CFB27, the Recruit Class enum currently decodes as raw bits, so the free-mode JUCO guard could not recognize JUCO rows; that allowed five-star rank/star values to land on JUCO recruits. Brooks's skeleton redesign avoids the mismatch by preserving EA's class structure and recruiting/NIL state and rerolling only the player surfaces intended for replacement.

User impact

The command provides a lightweight external recruit-class generator that updates a loaded dynasty without editing the save file directly. The live entry point always requests Brooks skeleton mode; there is no live free-mode option.

Validation

• npm test — 207/207 passing
• npm run check — passing
• live game verification on a clean dynasty at the Prospect List using seed live-skeleton-20260714-1
  • status applied_verified
  • 4,101 Player rows
  • 969 changed Recruit rows
  • 4,101 name slots
  • 287 verified batches
  • 0 portraits skipped
  • gear skipped for 4,101 recruits
  • rollback not needed
  • post-write hook status healthy