Forward-port of the release/5.1 fix (2c46c6c2d).
UpdateAlertConfig used to log SaveAlertConfig failures and still tell
the client "saved successfully", leaving the in-memory state with the
new override but the on-disk file untouched. On the next config reload
or process restart, the override silently vanished and the user saw
their threshold "revert" with no surfaced error. Return HTTP 500 with
the persistence error so the frontend can show a real save-failed
toast instead of false confidence.
Extract alert config types, normalization, and identity helpers into internal/alerts/config while preserving the existing alerts package API through aliases and wrappers.
Move Manager callback lifecycle state into a same-package callbackBus, keeping public Set/Subscribe methods unchanged.
Harden metrics SQLite artifacts to owner-only permissions and cover permissive umask behavior.
Proof: go test -json ./internal/api -count=1; go test ./internal/alerts/... ./internal/monitoring ./internal/ai/... ./internal/websocket ./internal/config ./pkg/metrics; go test ./internal/alerts/... ./pkg/metrics
- Updated LicenseHandlers and LicenseService to be context/tenant aware
- Refactored API router and middleware to support tenant-scoped license checks
- Updated associated tests for context-aware handlers
rcourtman