v2.7.0 (#534)

Co-authored-by: Quentin Torroba <quentin.torroba@mistral.ai>
Co-authored-by: Clément Drouin <clement.drouin@mistral.ai>
Co-authored-by: Clément Sirieix <clement.sirieix@mistral.ai>
Co-authored-by: Mistral Vibe <vibe@mistral.ai>

tests/cli/textual_ui/windowing/test_session_windowing.py

@@ -0,0 +1,47 @@
+from __future__ import annotations
+
+from vibe.cli.textual_ui.windowing.state import LOAD_MORE_BATCH_SIZE, SessionWindowing
+from vibe.core.types import LLMMessage, Role
+
+
+def _msg(
+    role: Role = Role.user, *, content: str = "x", injected: bool = False
+) -> LLMMessage:
+    return LLMMessage(role=role, content=content, injected=injected)
+
+
+def test_recompute_backfill_keeps_cursor_when_oldest_widgets_skip_injected_prefix() -> (
+    None
+):
+    """min(visible_indices) can sit past injected-only tail slots; backfill must not overlap."""
+    w = SessionWindowing(LOAD_MORE_BATCH_SIZE)
+    w.set_backfill([_msg() for _ in range(80)])
+    assert w.remaining == 80
+
+    history = [
+        *[_msg() for _ in range(80)],
+        *[_msg(injected=True) for _ in range(5)],
+        _msg(content="visible"),
+    ]
+    visible_indices = [85]
+    has_backfill = w.recompute_backfill(
+        history, visible_indices=visible_indices, visible_history_widgets_count=1
+    )
+    assert has_backfill
+    assert w.remaining == 80
+
+
+def test_recompute_backfill_advances_cursor_when_prefix_was_pruned_not_injected() -> (
+    None
+):
+    """If DOM lost widgets for non-injected messages, align cursor with oldest remaining widget."""
+    history = [_msg() for _ in range(100)]
+    w = SessionWindowing(LOAD_MORE_BATCH_SIZE)
+    w.set_backfill(history[:70])
+    assert w.remaining == 70
+
+    has_backfill = w.recompute_backfill(
+        history, visible_indices=[80], visible_history_widgets_count=10
+    )
+    assert has_backfill
+    assert w.remaining == 80