Per mara's issue: tables should remember their filters (with a reset
button), the labels filter should be multi-select, and any filter should
support negation (search vs exclude).
All in the shared Table component (ui/table/Table.tsx), used by
AgentsPage/HivesPage/IssueReportPage:
- filters now persist via the same useLocalSetting hook IssueReportPage
already used for its own state, keyed by a new required storageKey
prop (required, not optional, so no caller can forget it and every
table gets persistence for free)
- a small 'reset filters' button clears every column's filter at once,
shown only when at least one is active
- new filterMode: "multiselect" (+ a filterValues extractor, alongside
the existing single-value filterValue) renders a checkbox list and
matches on any overlap - IssueReportPage's own bespoke label-checkbox
sidebar is folded into this instead of staying a second, separate
filter mechanism
- a negate toggle ('exclude') sits under every filter mode's control,
applying uniformly to text/select/multiselect
Verified: tsc --noEmit and the esbuild bundle both clean.