The debug/testnet banner appended the active view's internal id, so the
user saw text like "[TESTNET] (approve-tx)" — developer vocabulary, and on
the approval screen it sat directly above the carefully worded line stating
what is being authorized. The view id is now gated on the compile-time
DEBUG constant instead of isDebug(), so it survives only in a debug build.
A testnet or the runtime debug toggle still raises the banner, but without
the view id, which is what a release build shows.
Model: opus-4-8
