Adds the test that would have caught the inventar↔inventory drift
months earlier (commit 45790ffbb fixed the actual mismatch). Walks
both directions:
1. Every workbench-registered app must have a MANA_APPS entry, OR
be in the WORKBENCH_ONLY allowlist (currently `automations`,
`playground` — internal devtools we don't want in marketing).
2. Every MANA_APPS entry must be registered in the workbench, OR
be in the BRANDING_ONLY allowlist (`mana` itself, standalone
subdomains like `arcade`, "Coming Soon" placeholders like
`wisekeep`/`mail`/`events`, and modules whose workbench
integration is still pending like `guides`/`who`).
Plus a regression guard that fails loudly if anyone reintroduces
`inventar` as an id in either registry.
The point: every future drift between the two registries forces the
contributor to either fix it on the spot or explicitly classify the
new entry in one of the allowlists with a comment. No more silent
fail-open tier-gating.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
df72a92b4c