Slice 3b — extends event publishing to background workers.
When the reconciler matches an approved Lidarr request against the
library and flips it to 'completed', it now publishes a
request.status_changed event scoped to the original requester so their
/requests page invalidates without polling. Three call sites — one per
kind (artist / album / track) — capture the completed row instead of
discarding it so the publish has the user_id.
Bus plumbing: the reconciler runs in cmd/minstrel/main.go which
constructs services before server.New is called. Moved bus
construction into main; the Server struct gained a Bus field that
Router() reads, falling back to a fresh local instance when nil
(test contexts). Result: one bus per process shared by every
publisher and the SSE subscriber endpoint.
reconciler.go inlines a uuid->string helper rather than reaching into
internal/api for one — avoids a back-edge dependency.
Test compat: 9 NewReconciler call sites in reconciler_integration_test.go
get `nil` for the new bus param. The reconciler's publishCompleted helper
is a no-op when the bus is nil so tests that don't care about events
keep passing.
Scanner producer (scan.progress) deferred to slice 3c — needs more
thought about which lifecycle transitions warrant events vs. flood the
stream.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen
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