Chameleon

[2.34.0] - 2026-06-26

Fixed

Bootstrap/refresh derivation-pipeline correctness pass (detect → discover →
parse → cluster → canonical → conventions → atomic commit):

• detect: root extractor selection now applies a language-magnitude
  tiebreak. The TypeScript extractor's can_handle accepts any shallow .ts
  file when there is no tsconfig.json / package.json TS dependency, so a few
  stray .ts files in a Python/Ruby-dominant repo (e.g. a Django app with a
  static/*.ts) misclassified the whole repo as TypeScript and produced a
  0-archetype profile. When TS is picked on that weak signal AND a marked
  backend (manage.py/pyproject for Python, Gemfile for Ruby) dominates by file
  count, the backend language now wins. Strong TS signals are never overridden.
• discover: an absolute paths_glob no longer crashes the bootstrap. A
  user-supplied absolute glob raised an uncaught NotImplementedError out of
  the tool instead of a clean failure. _glob_candidates now guards
  base.glob the same way workspace.py already does.
• parse: a missing Python toolchain reports failed_python_unavailable. The
  extractor-unavailable branch labelled every non-Node failure
  failed_ruby_unavailable, so a Python repo's libcst-missing failure
  contradicted its own error body.
• canonical: comment-only files are no longer chosen as canonical
  witnesses. A file that is all comments has non-whitespace content but no
  code structure, so it survived the empty-file exclusion and its comment text
  was injected as the per-edit "imitate this" exemplar. A file with an empty
  signature (no top-level code/export nodes) is now ranked trivial; barrels and
  imports-only files keep a non-empty signature and stay eligible.
• conventions: a malformed value in one section no longer wipes the whole
  injected block. The naming / inheritance / method_calls / key_exports render
  loops lacked the isinstance(data, dict) guard their siblings have, so one
  non-dict value (corrupt / hand-edited / 3-way-merged conventions.json)
  dropped the entire conventions block, well-formed sections included. Each loop
  now skips a malformed entry and keeps rendering the rest.