Merge branch 'fix/chat-scroll-up'

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01W8oRqEHhnKUr1NfmTVdcyL

1 files changed, 11 insertions, 4 deletions

diff --git a/packages/meshbay-hub/tests/test_layout_responsive.py b/packages/meshbay-hub/tests/test_layout_responsive.py
index d7a680d..4ee07d0 100644
--- a/packages/meshbay-hub/tests/test_layout_responsive.py
+++ b/packages/meshbay-hub/tests/test_layout_responsive.py
@@ -145,12 +145,19 @@ def test_the_measurement_survives_a_scrolled_page(app):
 
 
 def test_the_panel_refits_when_the_viewport_changes(app):
-    # `fit` is wrapped by `fitAndPin` (which also keeps the view pinned to
-    # the bottom on a resize) — that is what the listeners bind to.
+    # `fit` is wrapped by `fitAndPin` (which also keeps the view pinned to the
+    # bottom on a resize), and on the window by `refit`, which additionally
+    # forgets the learnt space below the panel — a real viewport change can
+    # mean the page under it reflowed. `visualViewport` deliberately does not
+    # forget: a phone fires that event constantly, and re-deriving the leftover
+    # there is what made fit() oscillate and weld the reader to the bottom of
+    # the conversation (see test_chat_scroll_up.py).
     for event in ("resize", "orientationchange"):
-        assert f"addEventListener('{event}', fitAndPin)" in app
+        assert f"addEventListener('{event}', refit)" in app
     assert "visualViewport?.addEventListener('resize', fitAndPin)" in app
-    assert "removeEventListener('resize', fitAndPin)" in app, "the listener must be released"
+    assert "removeEventListener('resize', refit)" in app, "the listener must be released"
+    assert "el._chatFitBelow = 0" in app, (
+        "a window resize must forget the learnt leftover and measure it again")
 
 
 def test_the_css_floor_does_not_fight_the_measurement(css, app):