Fixes from the review of the admin part:
- GET /api/admin/policy reads the policy and its version together; an
identity check waiting on the store let another replica's change pair
the old policy with the new ETag, and a save with it then won.
- A policy save answers with the stored policy and its ETag, and the
policy, organisation, plugins and themes pages continue from that
instead of reading it back from an instance that may not have it yet.
- A stored policy that doesn't parse keeps its version, so a save can
replace it instead of answering 409 forever.
- A reload of another replica's change throws when this replica's writes
kept landing while it read, so the change poller tries again; a write
whose reload raced it reads the document again instead of applying its
older result.
- Dropping a deleted plugin from the policy rereads policy.json first in
local mode, as every other write does.
- New updateAdminConfig(key, change) builds a value on the stored one.
The policy route's test mocks gain getPolicyWithVersion.
The admin pages save the whole policy from the draft they loaded. A
save from a page opened before another tab's or another admin's save,
or before a deleted plugin was dropped from the policy, used to put the
older policy back. GET /api/admin/policy now sends the policy version as
an ETag; the policy, organisation, plugins and themes pages send it back
as If-Match, and a save based on an older version answers 409 and keeps
the draft on the page. A PUT without If-Match replaces the policy as
before. Deleting a plugin or theme changes only its id in the stored
policy, and a policy import compares against what it replaces.
Test mocks of the config manager gain getPolicyVersion and updatePolicy,
which the route and the extension cleanup now call.
Several endpoints answered anyone with what fingerprints a deployment:
`/api/health?detailed=true` (versions, memory), the update status
(exact version and the text of a pending security advisory, even with
`loginShowVersion` off), `/api/plugins` (installed plugins and the hosts
they may reach), the admin policy (push relays, sidebar app URLs,
plugin lists) and `/api/config` (every domain each server serves).
Visitors without a session now get:
- the plain liveness answer from `/api/health`;
- the update status only where the login page shows the version, and
never the advisory text;
- a 401 from `/api/plugins`, which the client only syncs after signing
in;
- the policy without plugin lists, push relays and sidebar apps, marked
`X-Bulwark-Policy-Scope: public`; the client fetches the full policy
once it signs in;
- server domain lists only when servers are picked by domain.
A mailbox session, a remembered session cookie or the admin session
counts as signed in. Deployments without a session secret cannot tell
sessions apart and keep the old answers.
Linus Rath