Chameleon

Added

• The reuse-before-create nudge again covers class-bound methods (Rails
  models, Django querysets, service objects) -- where reuse most often lives
  in object-oriented code. v4.4.2 had excluded class methods to kill an
  "import this method" false positive, but that silenced the nudge exactly
  where an agent re-implements an existing model/queryset/service method
  verbatim. It is back, gated to fire only on a real duplicate:
  • It triggers only on a VERBATIM body match: the new method's body is
    structurally and textually identical to an existing one. Sharing a name
    is no longer enough.
  • The wording is "same body as X in Y -- extract a shared helper/concern
    instead of re-implementing it", not "import and reuse" -- a class-bound
    method cannot be imported, so the fix is extraction.
  • Matching uses a structure-preserving body fingerprint computed by the same
    extractor at bootstrap time and at edit time. A genuine duplicate matches
    by construction; a span the cheap extractor mis-reads simply fails to
    match instead of mis-matching, so the nudge cannot fire on two methods
    that are not identical. The fingerprint preserves each line's relative
    indent depth, so an in-block statement never collapses to read the same as
    an after-block one, and it skips a body whose span is cut short by a
    flush-left string, heredoc, comment, line-continuation, or unbalanced
    multi-line bracket (array, hash, call, percent-literal) rather than risk a
    partial match. Validated false-positive-free across ~15,000 real methods in
    Ruby, Python, and TypeScript.

Notes

• Existing profiles pick up the class-bound reuse coverage on the next
  /chameleon-refresh, which rebuilds the function catalog that stores the
  fingerprint. Until then that pass stays inert rather than guessing.