Move the bulk actions under the telemetry cards; pending only

[vijay-tylertech]

Four changes, all as specified:

• PENDING ONLY, both directions. Export and import now refuse anything else --
  reviewed and suggested claim a human has judged the text, pushed claims it
  is already live in Foundry, excluded claims it is out of scope. Landing new
  prose under any of those makes the claim false while leaving it on the page.
  Row checkboxes are disabled again on non-pending rows, so the restriction is
  visible before the click rather than reported after it.
• The three actions moved OUT of the selection bar and under the telemetry cards,
  above the filter row so narrowing the list does not move them. Sync transcripts
  stays top-right.
• ALWAYS VISIBLE; only availability moves. The row used to appear once something
  was selected, which meant the two selection actions did not exist until after the
  gesture that needs them -- nothing on the page said a selection would lead
  anywhere. A permanently-present disabled button states the affordance.
• Clear selection removed. The header checkbox is the clear-all -- and unchecking
  it now clears EVERY box, not only the visible ones, or a row selected before a
  filter was applied stays selected invisibly and the next export includes it.

Import warns before the file picker, not after the read: "Replaces the existing
Correction on every exchange the file matches." Cancelling costs nothing at that
point; cancelling after a write is not on offer. It uses the existing inline
confirm rather than a modal, so it cannot block.

Two consequences worth naming. The frontmatter needs-triage repair is gone from the
import path -- it existed to reconcile a reviewed file whose fields disagreed with
its body, and only pending transcripts reach that code now. And applyFilters() calls
ckSync(), because filtering changes what counts as selected: without it, narrowing
the list away from a selection left both buttons enabled against nothing.

Label note: the button reads "Mark selected reviewed", not "Mark selected". It marks
transcripts reviewed with NO change needed, and a label that omits the verb invites
the opposite reading on a bulk action.

Verified in Chrome: 3 buttons in the row and Sync still in the header; disabled ->
enabled -> disabled across select-one, select-all, clear-all; the hint reading
"Pending rows only" then "5 selected · as vijay-tylertech"; the warning appearing
inline, naming replacement, and restoring the button on Cancel; geometry showing
kpis -> actbar -> filter bar in order on one row; and every status refused by both
directions server-side with the files left byte-identical.

Claude-Session: https://claude.ai/code/session_01VVNYqGza2dFdeWFX7qXnwb