The hand-maintained APP_URLS map kept silently drifting from the
AppIconId union — most recently the new 'who' entry was missing,
which crashed getPillAppItems at runtime with "Cannot read properties
of undefined (reading 'prod')". Drift was already flagged by the type
system but the error was lost in the existing svelte-check noise.
APP_URLS is now generated at module load by walking Object.keys of
APP_ICONS (the source of AppIconId), so every id is guaranteed a URL.
A small APP_URL_OVERRIDES map carries the handful of apps that don't
follow the unified mana.how/{id} pattern (root path for the unified
shell, subdomains for standalone apps like arcade).
Adds two integrity tests as defense-in-depth: one asserts every
MANA_APPS id has a matching APP_ICONS icon, the other asserts every
AppIconId resolves to a non-empty dev+prod URL. Both would have caught
the 'who' regression on its own without needing svelte-check.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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