Address manager UAT:
- The DataTable controls row (status chips + pager) now portals into the
fixed band via a new controlsInBand prop, so it stays put above the
sticky header instead of scrolling away — and the pager fills the empty
space next to the status chips, on one row.
- The tab bar is always fixed chrome now (not just on Subscriptions), so
it doesn't jump when switching tabs; on Subscriptions the stats/intro/
tags ride with it.
- Blocked channels moves off the bottom of the Subscriptions list into its
own 'Blocked' tab (with an empty state), alongside Subscriptions and
Discover.
Verified with a 90-channel test account: everything above the rows stays
fixed while the rows scroll under the sticky header. Suite 15/15, tsc +
knip clean.