[AIDAPP-1595]: Improve the user interface of advisories in the portal - #1561

Between Status, Projects and Advisories, the portal now has a lot of local UI that other apps' portals will want too. Before this PR merges, I'd like to use it to tidy the components once:

Design system ground rules

1. Use the themed utilities instead of arbitrary values. The portal's Tailwind preset already maps rounded-sm / rounded / rounded-md / rounded-lg to the tenant's rounding setting, and brand-* to the tenant's primary palette.
   • Write rounded-lg instead of rounded-[var(--rounding-lg)], which appears in about 18 files.
   • Write brand-500 instead of rgba(var(--primary-500),1) or rgb(var(--primary-500)). These appear in AssetFilterTabs, ServiceMonitorDetailsCard, ServiceMonitorStatusCounts, ServiceMonitorUptimeCards, AssetStatCards, BaseSearchInput, BaseSelect, BaseTableSortableHeaderCell and the FormKit theme.
2. Match the rounding scale to Filament's. At the tenant's default rounding, the themed scale already matches Filament exactly:
   • Containers (cards, tables, empty states, the tabs bar): rounded-lg, which is 0.75rem.
   • Controls (inputs, selects, buttons, tab items, pagination buttons): rounded-md, which is 0.5rem.
   • Badges: rounded, which is 0.375rem.
   • Never use rounded-xl on a surface. It isn't themed, so it ignores the tenant's setting. Common's PageCard, EmptyState, Tabs and Pagination do this today.
3. Use one surface style everywhere: bg-white shadow-sm ring-1 ring-gray-950/5 rounded-lg. This matches Filament and the existing common components. The local border border-gray-200 shadow-xs style should go.
4. Keep Tailwind classes out of domain files. Files like serviceMonitorStatuses.js and advisoryPresentation.js should only map domain values to a tone or colour name, such as operational → success. The components own the classes. The severity colour map and the badge colour fallbacks in advisoryPresentation.js should disappear.

New components for canyongbs/common

• BaseSection (like Filament's Section). Props: heading, description, icon; slots #actions and default.
  • Replaces BaseCard with hand-written <h2> headers: advisory Description and Updates, and the uptime history card with its period select in #actions.
  • Also replaces the shell of ServiceMonitorDetailsCard.
• BaseTable family, moved from Components/ui:
  • The table container gets #toolbar and #footer slots, so search and filters sit in the same surface as the rows and Pagination sits in the footer. This removes the PageCard wrappers that create a card inside a card on Projects, ViewProject and Advisories, and the -mx-6 pagination hack on Advisories.
  • The header cell gets a sortable prop, replacing BaseTableSortableHeaderCell.
  • The container gets a loading prop, replacing the hand-rolled opacity-60 + aria-busy wrappers on Status and Advisories.
  • BaseTableCellText uses CSS line-clamp instead of cutting text in JavaScript. Advisories then uses it too, instead of its own title and description markup.
• BaseSelect / BaseSearchInput / BaseInputError, moved from Components/ui:
  • Use Filament's input style: ring-1 ring-gray-950/10 shadow-sm, with a brand focus ring.
  • Give BaseSearchInput a debounce prop. Status and Advisories both duplicate watch + setTimeout today.
  • Give BaseInputError role="alert".
• BaseCallout (one notice component). Props: tone (success / warning / danger / info / neutral), icon (defaults per tone), title, description, size (sm | lg); a #meta slot plus a small BaseCalloutMeta item.
  • Replaces ServiceMonitorStatusBanner, ServiceMonitorStatusBannerMeta and ServiceMonitorHealthNote, the inline role="note" box in ViewProject, and the advisories summary banner.
  • The advisories page then no longer borrows service-monitor statuses (degraded / operational).
• BaseStatCard: label, value, icon. It replaces the hand-built cards inside ServiceMonitorUptimeCards. AssetStatCards can move to it later once it gains a tone.

Changes to existing common components

• Tabs:
  • Add a per-tab badge (count), so Advisories shows "Active" with a count badge instead of "Active (4)", like Filament tabs.
  • Add an idPrefix and full tab accessibility markup: tablist, tab, aria-selected, aria-controls. AssetFilterTabs has this today; common Tabs doesn't.
  • Then delete AssetFilterTabs. The label and idPrefix props and the mb-0! override added to it in this PR go with it.
• BaseBadge:
  • Add black, light-gray, dark-gray and navy, so every case of the Color enum (which lives in common) works.
  • Add a dot prop and switch to themed rounded.
  • Then delete BaseStatusPill. ServiceMonitorStatusPill becomes BaseBadge with a colour from the status config. Advisory severity uses BaseBadge in both the list and the detail page; today it's a dot in one and a badge in the other.
• EmptyState: make it the only empty state. Use :contained="false" inside tables and delete BaseTableEmptyState, which draws a dashed box inside the card on Status, Projects and Advisories.
• PageCard, EmptyState, Tabs, Pagination: follow rule 2 for rounding.
• Pagination: it's already shaped as a table footer (border-t px-6 py-3), so use it only through BaseTable's #footer.

Keep in the app

• ServiceMonitorHistoryChart, ServiceMonitorHistorySparkline, ServiceMonitorStatusCounts, ProjectPipelineTable and AdvisoryUpdatesTimeline are domain-specific, so keep them local. Build them from the common pieces above and their status configs.
• The timeline can move to common once a second page needs it.

Consistency across the three features

• One row action for every table: a "View" button in the last column, as ProjectsTable and ServiceMonitorsTable already do. Advisories currently has a title link plus a chevron, which gives screen readers two links per row.

Suggested order

1. Common PR first. Use the local-common-development skill to link common locally. Add the rounding fixes, the Tabs, BaseBadge and EmptyState changes, and the new BaseSection, BaseTable*, inputs, BaseCallout and BaseStatCard. Then we can release that.
2. This PR: bump common, then move Status, Projects and Advisories onto the shared components. Delete the local copies: AssetFilterTabs, BaseTableEmptyState, BaseStatusPill, BaseCard, BaseTable*, BaseSelect, BaseSearchInput and BaseInputError. Then sweep the arbitrary rounding and colour values, including the FormKit theme.
   • Assets should come along wherever it uses the same components, since it shares the tabs, tables and empty states.
   • BaseDetailSection and BaseList are only used on the service request page and can move to BaseSection later.