All three paths (upload video pick, upload thumbnail pick, edit "Replace
file") now route through the shared signer gate — silent kept-unlocked
restore, else ONE passphrase prompt — then unlock storage and continue the
same pick. Cancel/bad-passphrase abort quietly; a refused thumbnail pick
restores the picker. Unlock glue extracted to uploadModalStorageUnlock.js
(file-size budget); ensureSigner threaded via initUploadModal/initEditModal.
Tests: tests/upload-edit-storage-unlock-gate.test.mjs (12).
Co-Authored-By: Claude Fable 5 <[email protected]>
