Driving the app in a real browser showed a context menu whose only item read
"schedule.ctx_new". t() returns the KEY when a string is missing — it never
returns undefined — so a missing key renders literally, and the common
`t('x') || 'A readable default'` guard is dead code: the key is truthy, the
default can never fire, and the pattern hides the problem instead of covering
it. Every occurrence of it in the app was doing exactly that.
Nineteen strings were affected, most of them predating this work: fifteen in
the self-hosted update panel and four in video walls, all of which have been
showing raw keys to users. The intended text was recovered from the dead
defaults, so the wording is the authors' own, and the defaults are removed
rather than left to imply a safety net that does not exist.
A test now walks the views for the keys they actually ask for and fails on any
that English does not define, and separately rejects the `|| default` pattern.
Neither problem is visible to a syntax check, a unit test, or review — only to
someone looking at the screen — so the guard is the only thing that keeps them
from coming back.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Uaeo9MvzKoyXuN6ZsbhtkL
