DebugBrief 1.2.0

Added

• Recognition for today's test runners: vitest, bun test, deno test,
  node --test, make test and make check, tox, unittest, dotnet test, ctest,
  phpunit, mix test, and swift test join the existing table. Wrapped
  invocations such as npx vitest or python -m unittest match the same way.
• run --verify (also on redo) declares an unrecognized command, such as a
  custom test script, as a check. It counts as verification only when it
  really exits 0; a failing declared check stays a failure and feeds the
  reproduce line and the red-to-green window. On a recognized runner the flag
  is a no-op, and a redo of a declared check inherits it automatically.
• debugbrief preview [--mode pr|handoff|incident] prints the report for the
  active session to stdout without ending the session, writing a file, or
  modifying anything; the output carries a one-line preview banner.
• Sample handoff and incident reports under examples/, generated with the
  tool itself from realistic sessions.

Changed

• The README documents the recognized runner table, points custom scripts at
  --verify, and summarizes what redaction does and does not catch.