* feat: add weekly UTC maintenance windows to mute rules
Let mute rules suppress only during recurring UTC windows, normalize
replica node identity, and fail-open when remotes lack schedule support
so older nodes never keep an all-day scheduled mute after a successful cleanup DELETE.
* fix: fail closed on corrupt mute schedules and clean invalid replicas
Empty or whitespace stored schedules no longer act as all-day mutes. Invalid schedules trigger remote DELETE cleanup, and the weekly-window form gains accessibility attributes plus component coverage.
* fix: require explicit repair before clearing a corrupt mute schedule
The suppression engine already fails closed on an unreadable stored
schedule (scheduleInvalid), but the frontend never surfaced that flag:
a corrupt rule looked identical to an ordinary unscheduled one, and
opening Edit then clicking Update sent an explicit schedule: null,
silently turning the corruption into a valid all-day mute. Add the
flag to the rule type, show an Invalid schedule badge on the card, and
block saving in the edit form until the operator explicitly touches
the weekly window (configures a new one, or toggles it to confirm the
clear).
* fix: correct contradictory toggle-sequence copy in schedule-repair toast
The blocking toast told operators to toggle the weekly window "off then
on" to confirm clearing a corrupt schedule, but the toggle starts off
for a corrupt rule, so that sequence leaves it on and trips the
no-selected-day validation instead. The correct, tested sequence is on
then off, matching the inline hint below the toggle. Also add a
regression test confirming the invalid-schedule save gate resets
cleanly across edit sessions on different rules.
* fix: enforce replica node_id and guard fleet sync against stale writes
Two hardenings to the suppression-rule fleet sync path found during
review: the /replica endpoint trusted the payload's node_id instead of
forcing it to null server-side, so a direct proxy-authenticated caller
could persist a scoped replica; and upsertNotificationSuppressionRuleReplica
overwrote unconditionally with no ordering check, so a delayed older
POST arriving after a newer one could downgrade the stored rule. Force
node_id to null on every replica write, and skip (with a warning log)
any incoming write whose updated_at is not newer than what's stored.
* test: assert the exact-tie updated_at case in the fleet sync stale-write guard
The staleness guard added in c31458a1 uses >= (ties are ignored, not
just strictly older writes); add the missing assertion for that
boundary and make the comment explicit about it.
* fix: bump vulnerable transitive backend dependencies
npm audit flagged body-parser, fast-uri, and protobufjs (one high
severity: fast-uri host confusion via failed IDN canonicalization).
All three have patch/minor fixes within existing semver ranges;
npm audit fix resolves all three with no package.json changes.
* fix: sanitize suppression replica fields before logging
Log entries built from fleet-sync replica payloads embedded rule id
and timestamp values directly, allowing a compromised peer to forge
log lines via control characters.
* fix: prevent delayed replica writes from resurrecting deleted mute rules
A network-reordered replica POST arriving after a DELETE fell into the
insert-when-absent branch with no protection, since the staleness guard
only compares against a row that still exists. Add a permanent
per-id tombstone (safe because rule ids are AUTOINCREMENT and never
reused): every delete records one, and the replica upsert refuses to
recreate a tombstoned id regardless of the incoming updated_at.
* feat: add configurable notification dispatch retries
Allow each node to set 0-3 extra in-process delivery attempts with a fixed
one-second delay for routes, agents, and Test dispatch.
* fix: harden notification retry settings load/save and channel tests
Guard Delivery retries against failed and out-of-order same-node settings responses, and cover Slack/webhook retry classification alongside Discord.
* fix: clear Delivery retries saving state and correct screenshot alt
Separate save-request ownership from value-generation invalidation so a successful PATCH cannot leave Save retries stuck on Saving, reset saving on node switch, and align the Channels screenshot alt with the committed image.
* fix: surface invalid notification retry settings instead of false saved clamp
Align Channels GET handling with the backend strict 0-3 parser so stored values like 9 or 1.5 show as error needing repair, matching runtime fallback to 0 instead of displaying a clamped saved policy.
* feat: add notification suppression rules
* fix: restore label routing and routing test mocks for suppression
* fix: allow bell mute shortcuts for history-only notification categories
Suppression rule validation used the routable category whitelist, which rejected history-only categories such as update_started that appear in the bell during stack updates.
* feat: expand Mute Rules UX with compose-first entry points and activity badges
* fix: add missing NodeContext mocks for notification suppression tests
Anso