awf v0.1.3

Fixes concurrent anthropic/claude-code runs on the native backend that failed
when 2+ ran in parallel. No workflow-format or CLI changes. (Supersedes the v0.1.2
tag, whose release build failed a formatting check and published nothing.)

Fixed

• Concurrent native Claude runs no longer contend on claude-code's version lock.
  0.1.1 gave each run its own CLAUDE_CONFIG_DIR, but claude-code keeps a per-version
  single-instance lock at $XDG_STATE_HOME/claude/locks/<version>.lock — outside the
  config dir. On the native backend every run inherits the shared host $HOME (and
  therefore $XDG_STATE_HOME), so two or more concurrent runs of the same claude version
  contended on the same lock and the loser exited non-zero. Both anthropic/claude-code
  and anthropic/claude-code-session now also relocate XDG_STATE_HOME and
  XDG_CACHE_HOME to per-run directories alongside CLAUDE_CONFIG_DIR, isolating the
  lock and cache per run. HOME and XDG_DATA_HOME are intentionally left shared
  (claude's versioned binary lives under XDG_DATA_HOME and must stay resolvable).