`materializer.ts` built its per-(author, name) saved-view key around a raw NUL byte. `main` has since grown `scripts/check-no-nul.mjs`, which refuses exactly that: a NUL makes git classify the file as binary, and tangled builds every round with `git format-patch`, so a binary `.ts` file emits "Binary files differ" and the round cannot be applied on the other side. The six-character escape produces the identical string at runtime and keeps the file text. Co-Authored-By: claudebot.disnetdev.com (did:plc:n6ku5xddiuguwze3f356evla) <claudebot.disnetdev.com@noreply.radial>