v0.4.0

Added

• Scope lock (tenancy). Constrain the whole dashboard to a fixed set of
  services / environments — dynamically per user via
  TelemetryUi::restrictScopeUsing(), or statically with no code via
  telemetry-ui.scope.lock / TELEMETRY_UI_LOCK_SERVICES /
  TELEMETRY_UI_LOCK_ENVIRONMENTS. The picker now reflects the lock: it offers
  only allowed values, drops "All" for a locked dimension, and hides a picker
  locked to a single value entirely. Enforcement stays at query time.
• Page-detail show pages. Analytics and Frontend rows now open a dedicated
  page-detail scoped to that one URL path — traffic (views, visitors,
  referrers, countries, devices), real-user performance (Core Web Vitals + load
  timings), the page's browser→backend traces, and its browser errors — instead
  of dumping into a pre-filtered trace search.
• Richer visitor breakdowns. The analytics "Sources & audience" card gains
  Sources, Regions, Cities, Operating systems and Browsers alongside Referrers,
  Countries and Devices, each toggleable via telemetry-ui.analytics.dimensions.
• Marketing channel — a first-class, zero-cardinality dimension. Visits are
  classified into Direct / Organic search / Social / Email / Paid / Referral /
  Internal, derived at read time from the referrer (and UTM medium + paid
  click-id once the emitter captures them), so it costs no ingest cardinality.
  Configure your own hosts with telemetry-ui.analytics.internal_hosts.
• Campaigns card. UTM campaign attribution (campaign / source / medium, and
  higher-cardinality content / term) from the emitter's
  telemetry.analytics.utm capture — with a single empty state until it's on.
• Cardinality guide in the analytics cookbook: per-dimension high/low
  classification, the capture-vs-surface control split, and the ClickHouse path.

Fixed

• Chart-annotation toggle no longer shows a duplicate "Cache purge" (the
  Statamic marker is now its own labelled, distinctly-coloured entry) and its
  rows/labels align in one clean column.

Changed

• Requires cboxdk/laravel-telemetry ^0.3.0 for the UTM / campaign capture
  the Campaigns card and channel enrichment read.