fix(email): clear bulk selection on context change (#5229)

tests/test_email_library_bulk_actions.py

@@ -12,6 +12,16 @@ def _bulk_action_source() -> str:
     return text[start:end]
 
 
+def _function_source(name: str) -> str:
+    text = _EMAIL_LIBRARY.read_text(encoding="utf-8")
+    start = text.index(f"function {name}")
+    next_function = text.find("\nfunction ", start + 1)
+    next_async = text.find("\nasync function ", start + 1)
+    candidates = [idx for idx in (next_function, next_async) if idx != -1]
+    end = min(candidates) if candidates else len(text)
+    return text[start:end]
+
+
 def test_email_bulk_read_unread_calls_provider_write_routes():
     """Bulk read/unread must persist to IMAP/provider, not only mutate UI state.
 
@@ -34,3 +44,33 @@ def test_email_bulk_read_unread_checks_backend_success_before_syncing_cache():
     assert "data?.success === false" in src
     assert "throw new Error(data?.error" in src
     assert "_libCacheWriteBack()" in src
+
+
+def test_email_context_changes_clear_bulk_selection_state():
+    """IMAP UIDs are folder/account scoped, so stale bulk selections must die.
+
+    Folder, account, filter, quick-filter, attachment, and search basis changes
+    must exit select mode before the next list/search view can run bulk actions.
+    """
+    text = _EMAIL_LIBRARY.read_text(encoding="utf-8")
+    reset_src = _function_source("_resetBulkSelectionForContextChange")
+    fresh_src = _function_source("_resetEmailListForFreshLoad")
+    add_pill_src = _function_source("_addSearchPill")
+    remove_pill_src = _function_source("_removeSearchPillAt")
+    search_src = text[text.index("async function _doSearch()"):text.index("// Custom dropdown", text.index("async function _doSearch()"))]
+
+    assert "state._selectedUids.clear()" in reset_src
+    assert "state._selectMode = false" in reset_src
+    assert "_updateBulkBar()" in reset_src
+
+    assert "_resetBulkSelectionForContextChange()" in fresh_src
+    assert "_resetBulkSelectionForContextChange({ rerender: true })" in add_pill_src
+    assert "_resetBulkSelectionForContextChange({ rerender: true })" in remove_pill_src
+    assert "_resetBulkSelectionForContextChange({ rerender: true })" in search_src
+
+    assert "state._libFolder = e.target.value;" in text
+    assert "state._libFilter = e.target.value;" in text
+    assert "state._libHasAttachments = !state._libHasAttachments;" in text
+    assert "state._libAccountId = btn.dataset.accId || null;" in text
+    assert text.count("_loadEmailsFresh();") >= 5
+    assert "state._libSearchDraft = input.value;" in text