chameleon 2.68.0

Fixed

• Linked git worktree support closed two dozen confirmed gaps. A committed
  .chameleon/ profile is normally gitignored and lives only at a repo's main
  git worktree; a linked worktree (git worktree add) has no .chameleon of
  its own. resolve_profile_root (added in v2.22.3) maps a linked worktree
  back to its main worktree's profile, but the mapping was applied
  inconsistently -- some artifact loaders and MCP tools called it, others read
  .chameleon/<artifact> off the raw worktree path and silently degraded.
  Five artifact loaders (load_reverse_index, load_constant_index,
  load_symbol_signatures, load_counterexamples, load_function_catalog)
  now resolve internally, mirroring load_calls_index's existing correct
  behavior -- this alone fixed query_symbol_importers, get_crossfile_context,
  get_duplication_candidates, and lint_file's phantom-symbol check.
  Eighteen more call sites across refresh_repo, bootstrap_repo,
  trust_profile, teach_profile, teach_profile_structured,
  propose_archetype_renames, apply_archetype_renames,
  teach_competing_import, unteach_competing_import,
  get_idiom_coverage, check_idiom_candidates, get_autopass_verdict,
  get_contract_breaks, get_drift_status, scan_dependency_changes,
  doctor, list_profiles, and record_review_verdict were fixed
  individually. The most severe: refresh_repo invoked from a linked
  worktree silently bootstrapped a brand-new, diverged profile INSIDE the
  worktree instead of updating the shared profile at the main worktree --
  orphaned the moment the worktree was removed, and permanently forked from
  main's profile in the meantime. Fixing that write target alone was not
  enough: refresh_repo and bootstrap_repo now separately track the
  caller's actual worktree as an analysis_root (discovery/AST-parsing) from
  the redirected .chameleon write target, mirroring the existing
  production_ref analysis/write split -- otherwise a refresh from a
  worktree would silently profile the MAIN worktree's files while reporting
  success. The unsafe-root safety refusal (temp-dir / world-writable roots)
  now runs on the caller's real location instead of the redirected target,
  since analysis reads real source files from it. Found via real linked
  worktrees against real bootstrapped repos (TypeScript/Next.js, Ruby/Rails,
  Python/Django), each finding independently re-reproduced and verified
  before being fixed; a follow-up workflow-backed code review caught the
  analysis-root regression in the first pass and eight further gaps before
  release.