Files view: the row jump no longer scrolls to the end of the trace (v2.6.1)

- jumpToMessage() rendered the APDU list through the unqualified
  renderMessages(), whose tail pins the view to the bottom (the live-capture
  stick), and only then let focusMessage() smooth-scroll back up to the
  clicked record — the visible jump-to-end-then-back.  It now renders with
  skipScroll, so the only scroll is the focus itself
- the content-follow became conditional: shouldStickToBottom() pins the view
  to the newest messages only while the reader is already at the bottom
  (40 px slack), so the 500 ms live poll no longer pulls away a view the
  reader scrolled to — a Files/map jump is no longer yanked down by the next
  batch.  A freshly opened session or a new capture still lands at the
  bottom (renderMessages(false, true))
- tests (node): the jump's paging/render(true)/focus sequence with stubs, the
  no-session no-op, the stick decision (at bottom / within slack / scrolled
  up / explicit jump / forced / first render) and source pins for
  renderMessages, jumpToMessage, loadSession and startCapture; 527 Python +
  53 Node tests
- README/README_RUS note the follow behaviour; PWA_VERSION/pyproject/
  version.py 2.6.1, SW cache simtrace-analyser-v73

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.backends._legacy:_Backend"
 
 [project]
 name = "simtrace-analyser"
-version = "2.6.0"
+version = "2.6.1"
 description = "SIMtrace Analyser — APDU trace analyser for GSMTAP/PCAP captures (bundles the simtrace2-pysniff utility)"
 readme = {file = "README.md", content-type = "text/markdown"}
 license = {text = "GPL-2.0-or-later"}