fix(ui): conversation-row selection on SHORT_CLICKED, not CLICKED

Long-press to delete a conversation, then release: the row fired
on_conversation_long_pressed (confirm dialog) AND, on release,
on_conversation_clicked, navigating into the conversation and hiding
the dialog. Root cause: LVGL 8.4 lv_indev.c indev_proc_release()
(lines 973-980) sends LV_EVENT_CLICKED on every pointer release without
scrolling, including long-press release — only LV_EVENT_SHORT_CLICKED
is gated on long_pr_sent == 0. The row had both CLICKED and LONG_PRESSED
bound.

Selection is now bound to LV_EVENT_SHORT_CLICKED. Trackball selection
is unaffected: the keypad path sends SHORT_CLICKED + CLICKED on a
plain enter release and suppresses both when long_pr_sent is set
(lv_indev.c:526-531, 678-692). No programmatic CLICKED sends exist
in the app. This row is the only object with the CLICKED +
LONG_PRESSED double-bind (bubble/textarea long-press sites are
single-bound, verified).

Contract pins: selection must bind SHORT_CLICKED, no CLICKED binding
on the row, long-press delete binding unchanged. 184/184 contracts,
tdeck + tdeck-release green.

lib/tdeck_ui/UI/LXMF/ConversationListScreen.cpp

@@ -532,7 +532,14 @@ void ConversationListScreen::create_conversation_item(const ConversationItem& it
     // Store peer hash in user data using pool (avoids per-item heap allocations)
     _peer_hash_pool.push_back(item.peer_hash);
     lv_obj_set_user_data(container, &_peer_hash_pool.back());
-    lv_obj_add_event_cb(container, on_conversation_clicked, LV_EVENT_CLICKED, this);
+    // SHORT_CLICKED (not CLICKED): in LVGL 8.4 indev_proc_release()
+    // (lv_indev.c:973-980) CLICKED is sent on EVERY pointer release
+    // without scrolling — including a long-press release — while
+    // SHORT_CLICKED is gated on long_pr_sent == 0. With both CLICKED and
+    // LONG_PRESSED bound to the row, a long-press to delete would fire
+    // on_conversation_long_pressed AND, on release, on_conversation_clicked,
+    // navigating into the conversation and hiding the confirm dialog.
+    lv_obj_add_event_cb(container, on_conversation_clicked, LV_EVENT_SHORT_CLICKED, this);
     lv_obj_add_event_cb(container, on_conversation_long_pressed, LV_EVENT_LONG_PRESSED, this);
 
     // Track container for focus group management

tests/build_scripts/test_conversation_row_longpress_contract.py

@@ -0,0 +1,52 @@
+"""Source contract: conversation-row selection must not fire on long-press release.
+
+LVGL 8.4 lv_indev.c indev_proc_release() (lines ~973-980) sends
+LV_EVENT_CLICKED on EVERY pointer release without scrolling, including a
+long-press release — only LV_EVENT_SHORT_CLICKED is gated on
+long_pr_sent == 0. With both CLICKED and LONG_PRESSED bound to the
+conversation row, a long-press to open the delete dialog would also, on
+release, fire the selection handler and navigate into the conversation,
+hiding the confirm dialog.
+
+The row therefore binds selection to LV_EVENT_SHORT_CLICKED. Trackball
+selection is unaffected: the keypad indev path sends SHORT_CLICKED and
+CLICKED for an enter release without a long press, and suppresses both
+when long_pr_sent is set.
+"""
+
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[2]
+LIST_CPP = ROOT / "lib/tdeck_ui/UI/LXMF/ConversationListScreen.cpp"
+
+
+def _source() -> str:
+    return LIST_CPP.read_text()
+
+
+def test_row_selection_uses_short_clicked():
+    source = _source()
+    assert (
+        "lv_obj_add_event_cb(container, on_conversation_clicked, LV_EVENT_SHORT_CLICKED, this)"
+        in source
+    ), (
+        "conversation row selection must bind LV_EVENT_SHORT_CLICKED — "
+        "LV_EVENT_CLICKED fires on long-press release in LVGL 8.4 and "
+        "would navigate into the chat while the delete dialog is open"
+    )
+
+
+def test_row_has_no_clicked_binding():
+    source = _source()
+    assert "on_conversation_clicked, LV_EVENT_CLICKED" not in source, (
+        "stale LV_EVENT_CLICKED binding on the conversation row would "
+        "re-introduce the long-press-release navigation"
+    )
+
+
+def test_row_long_press_delete_binding_unchanged():
+    source = _source()
+    assert (
+        "lv_obj_add_event_cb(container, on_conversation_long_pressed, LV_EVENT_LONG_PRESSED, this)"
+        in source
+    ), "long-press delete on the conversation row must remain bound"