Audition 0.1.0

Initial release. Written end to end by Claude Fable 5 (Anthropic);
see the README warning.

• Static analysis on Prism: global variables (allowlist verified on
  Ruby 4.0), deeply-shareable constant classification with shallow
  freeze detection, runtime require/autoload, Ractor.new outer
  local capture, and a knowledge base of hostile or removed APIs.
• Whole-program checks on the rubydex graph: class variables and
  class-level instance variable state unified across files and
  reopenings.
• Dynamic probing in subprocesses: scripts run inside a real
  Ractor, libraries are required and their namespaces swept with
  Ractor.shareable? and dependency attribution, Rack apps boot
  and serve a request per-Ractor, Rails boots and eager-loads, and
  --capabilities reports what the running Ruby allows in Ractors.
• Verdicts: ready, risky, blocked (own code clean,
  dependencies dirty), not_ready.
• --fix in two tiers: safe corrections (freezes,
  Ractor.make_shareable wraps, require hoisting) and
  --fix-unsafe rewrites (magic comments, class memoization to
  Ractor.store_if_absent, autoload conversion, write-once
  globals/class variables to constants), with --dry-run preview.
• Bundle sweep: audition Gemfile.lock or --deps ranks every
  gem in the bundle in one verdict table.
• Incremental adoption: # audition:disable pragmas,
  .audition.yml config, and a line-drift-resilient baseline
  (--write-baseline).
• Ractor-parallel static scanning of large targets.
• Terminal output with colors, glyphs, and OSC 8 hyperlinks; JSON
  for CI.