chore: keep the internal view id out of the release banner (closes #375)

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

TODO.md

@@ -123,6 +123,15 @@ but the review is broader than any of them.
   `Unknown token`, and a non-bundled ERC-20 is no longer carried onto the wait
   screen as `ETH`. A tracked or explorer-reported name stays subject to the
   spoof rule, so resolving a symbol is not a new way to wear a known ticker.
+- 2026-09-21: The debug/testnet banner no longer shows the internal view id to
+  the user in a release build
+  ([#375](https://git.eeqj.de/sneak/AutistMask/issues/375)). The banner appended
+  the active view's id (e.g. `[TESTNET] (approve-tx)`), which is developer
+  vocabulary sitting directly above the approval screen's carefully worded
+  authorization text. The suffix is now gated on the compile-time `DEBUG`
+  constant rather than `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.
 - 2026-08-30: An address no longer wraps, or is shortened to fit, in any of the
   common views ([#380](https://git.eeqj.de/sneak/AutistMask/issues/380)). The
   wallet list was the reported case: the address shared one row with the