todo-list-3 version-audit: fix stale 0.3.4 defaults in build-deb.sh and
printit index deb blurb; document audit in PACKAGING; smoke asserts deb
fallback. CDN last-published 0.3.2/0.1.2 checksums left intentional.
- auth.PasswordForgot / auth.PasswordReset (+ httptest tests); ErrResetUnavailable
on 404/401/405/5xx so dialogs offer https://customer.verae.ai/portal/
- keyflow_gui: 'Forgot password?' on the password step and after a failed sign-in
- Windows: Forgot password? link, forgot/reset/unavailable forms
- bump HelperVersion, deb and pkg default VERSION to 0.3.4