Two end-to-end journeys via `pic` against a real server:
* `group_secret_is_injected_then_app_value_overrides` — a group-owned
secret is injected into a descendant app's script through `secrets::get`
(decrypted under the group AAD), then an app-owned secret of the same
name shadows it (decrypted under the app AAD). Drives the resolver + both
owner-AAD open paths against Postgres.
* `group_secret_value_is_masked_from_app_devs` — the §5.3 boundary: an app
dev (editor on the app, no group role) is denied the secret VALUE (403)
yet still sees it EXISTS, masked, in `config/effective` (status set,
owner group, no value); a group_admin reads the value. Proves an app
runs with config its own devs cannot read.
Also updates the existing app-secrets `ls` journey for the new `env`
column (group secrets are env-scoped).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
