Testnizer v1.4.16

v1.4.16

Folder- and project-level authorization + scripts that requests inherit, plus
two Insomnia/Postman import fixes so imported collections run in the right order
with their shared auth intact.

• Inherit auth from folder / project: a request's Auth tab gains an Inherit
  from parent option (now the default for new requests). The effective auth is
  resolved nearest-wins — request → nearest folder → project — so you can set a
  Bearer {{accessToken}} once on a folder (or in Project Settings →
  Authorization) and every request below it picks it up. An explicit No Auth
  on a request or folder stops the inheritance.
• Folder Settings (auth + scripts): right-click any folder → Settings to
  set its authorization and its pre-request / test scripts.
• Cascade scripts: project and folder pre-request / test scripts now run
  around every request in the cascade order project → folder → request, on
  both Send and Run. (Project-level auth + scripts were configurable
  before but weren't applied at runtime — now they are.)
• Insomnia import order fixed: Insomnia v5 collections are now imported in
  meta.sortKey order (what Insomnia actually runs), not raw file order — so a
  Run fires requests in the intended sequence instead of a scrambled one.
• Insomnia/Postman auth inheritance on import: a collection's root (and any
  folder's) authentication is now carried onto child requests that don't set
  their own. Previously an imported collection that defined Bearer {{accessToken}} once at the root sent no Authorization on its child requests
  and failed with 401 "Empty Key".

Tests: new pure-resolver, runner-integration and renderer-mirror suites for
auth/script inheritance, plus end-to-end Playwright coverage (folder bearer
inherited + overridden against the live echo server, the cascade pre-request
script, and the Folder Settings modal). Unit suite now at 1738.