v0.1.0

feat: wom CLI v0.1.0 — full WiseOldMan API wrapper

Player commands:
  lookup — stats, EHP/EHB, top boss KCs with proper names
  gains — skill XP + boss KC gains by period
  update — trigger stat refresh
  search — find players by partial name
  achievements — player achievement list

Group commands:
  info — group details
  leaderboard — gains by any metric (overall, ehb, vorkath, etc.)
  hiscores — total stats leaderboard
  members — full member list with roles
  competitions — list group competitions

Competition commands (full CRUD):
  create — with participants or group-based
  view — standings with gains
  edit — change title, end date, participants
  add-participants / remove-participants
  update-all — refresh all outdated stats
  delete — with verification code

Features:
  - Boss names properly formatted (The Leviathan, Chambers of Xeric CM)
  - EHB/EHP shown with decimals (8.5 ehb)
  - Numbers formatted (5.5M, 649K)
  - --json on every command
  - Actionable error messages