[CLEAN] Synthetic Benchmark PR #5866 - Consolidated View life cycle + billing integration

[tomerqodo]

Benchmark PR plausible#5866

Type: Clean (correct implementation)

Original PR Title: Consolidated View life cycle + billing integration
Original PR Description: ### Changes

This PR integrates consolidated view life cycle with billing properties.
It relies on two migrations (included here still), extracted to separate PRs:

• Migration: add consolidated views feature to enterprise plans plausible/analytics#5878
• Migration: Add user preferences per team table plausible/analytics#5877
• Migration: team membership user preferences table plausible/analytics#5881

Main changes:

• new feature flag: :consolidated_view - we no longer display anything based on super_admin role; flag is not setup on production yet, meaning existing consolidated views will disappear (and no CTAs will be shown).
• new billing feature: ConsolidatedView
• all existing plans are updated, so that business tier includes the newly added features - either through static definitions or database migration
• whenever /sites is visited an attempt is made to create consolidated view. If the team is eligible, and the feature flag is raised, the consolidated view card is shown. Otherwise a CTA card is displayed (courtesy of @sanne-san)
  • CTA card has several variants, depending on the context, but eventually leads to upgrade. Once the upgrade is performed, /sites will include the consolidated view card.
  • CTA card can be permanently dismissed per user and team; because local storage and cookies turned out to be very difficult to work with in this setup, the decision was made to introduce a new postgres table capable of storing user preferences in a team context (it's almost a 1:1 copy of the existing site user preferences table)
  • When CTA is dismissed, the "New Site" button becomes a prima drop-down (courtesy of @ukutaht) from which the user may restore it (by selecting "+ New consolidated view" dropdown item)
  • CRM now presents a more elaborate alert on deleting consolidated view, as well as the availability status (whether upgrade is required)
  • some minor improvements BTW:
    • shared links enforce regular sites,
    • accessing a consolidated view via pre-existing URL, while ineligible, redirects to /sites
    • at least 2 sites are now required to create (or even suggest) a consolidated view
    • ConsolidatedView.enabled?/1 has been removed, since enabling doesn't mean availability

TODO:

• staging preview is currently unavailable due to pending migrations
• there are visual issues with card plots and overlapping dropdowns

record-2025-11-10-10-29-34-year.node.norm.mp4

• the dropdown doesn't respect dark mode

Tests

• Automated tests have been added
• This PR does not require tests

Changelog

• Entry has been added to changelog
• This PR does not make a user-facing change

Documentation

• Docs have been updated
• This change does not need a documentation update

Dark mode

• The UI has been tested both in dark and light mode
• This PR does not change the UI

Original PR URL: plausible#5866