The shipped join flow (v2.2.0-v2.3.0) was a one-time snapshot: a spoke's
catalog never updated after joining. This adds the two pieces that were
explicitly designed but missing:
- Live replication: a spoke registers its own endpoint with the master
right after joining (POST /api/site/spokes, Bearer join-key), receiving
a pushToken. Every successful catalog write on the master now fires a
fire-and-forget resync ping (utils/site_replicate.js) at every known
spoke, concurrently -- one unreachable spoke never blocks or delays
another (wired into the existing write-gate middleware in
api_directory_admin.js). The spoke's POST /api/site/resync handler
reuses the already-tested export+import path rather than applying a
partial diff.
- Identical directories: POST /api/site/export now best-effort includes
the master's agent-signing key; a spoke adopts it via agent_keys.adopt()
on both join and every resync, so every site's sso-manager can validly
sign a command for any agent enrolled anywhere -- the accepted tradeoff
discussed for this deployment's scale (blast radius for simplicity).
New SiteSpoke model tracks registered spokes (endpoint + pushToken);
registered it in models/index.js (a real bug the e2e test below caught --
SiteSpoke.list() 500'd with "Cannot read properties of null (reading
'adapter')" until the model was added to initORM's model list).
Verified end-to-end against docker-compose.multisite-e2e.yml: mint join
key -> join with selfUrl -> write a NEW resource on master post-join ->
poll the spoke -> it shows up within a few seconds via the resync push,
no manual re-join needed. MULTISITE E2E PASS.
Unit tests: nodejs/tests/site_replicate.test.js (concurrent fan-out, one
failing spoke doesn't block another, empty-registry and list()-throws
edge cases).
