Fixed: a credential you edited kept showing its old value after being revealed.
The correct value was always sent — only the display was stale.

Fixed: editing a credential started from an empty field. The current value is
now loaded in, ready to edit, and stays masked until you choose to show it.

New: revealing a credential opens a panel with a wrapping, selectable box, a
Copy all button, and, for values made of named parts like a Set-Cookie line,
a button to copy each part on its own. Copying just a session token out of
"x=...; Domain=...; Path=/..." is now one click.

Copying counts toward the vault's inactivity timer, and the first copy in a
session reminds you that clipboard history tools may retain the value.

Release notes can be found at https://github.com/Multivalence/OpenModHeader/releases#release-v1.2.2