0.2.38: multi-account meters for Codex and Claude

Added

• Multi-account meters for Codex and Claude. People who hold two or more
  accounts with the same tool get one independent meter row per account
  instead of a merge — two accounts' windows are two different budgets. Add
  accounts in Settings → Second accounts (name + config directory, any
  number, add or remove freely); readings appear after relaunch once the
  directory exists. The Codex slot spawns its own codex subprocess with
  that home (the CLI authenticates as that account; meterusage still never
  touches any auth file); the Claude slot scans that account's own transcript
  tree, plan file, and companion quota snapshot. Account rows carry your
  label ("Codex · Work") and a digit beside the mark in the tray and side
  notch, and the meterusage json report lists each account with its own
  windows, plan, and reset credits plus an additive account label field.
  No account identifier is ever read or displayed — labels are user-typed,
  and each account's history, archive, and alerts are kept separate.

Download MeterUsage-0.2.38.zip, unzip it, and move MeterUsage.app to Applications. This open-source build is ad-hoc signed, not notarized; use Finder right-click > Open on first launch if macOS blocks it.