feat: drawer hide-from-view toggle + turn_hidden manual_edit branch (T98.3)

tests/test_drawer_phase4.py

@@ -280,3 +280,106 @@ def test_t98_2_edit_significance_via_existing_route_lands_manual_edit(
         assert int(payload["target_id"]) == target_id
         assert payload["prior_value"] == 0
         assert payload["new_value"] == 3
+
+
+# ---------------------------------------------------------------------------
+# T98.3 — hide-from-view toggle.
+# ---------------------------------------------------------------------------
+
+
+def _seed_turns(db: Path) -> tuple[int, int]:
+    """Append one user_turn + one assistant_turn; return their event ids."""
+    with open_db(db) as conn:
+        user_id = append_and_apply(
+            conn,
+            kind="user_turn",
+            payload={
+                "chat_id": "chat_bot_a",
+                "prose": "How are you doing today?",
+                "segments": [],
+            },
+        )
+        bot_id = append_and_apply(
+            conn,
+            kind="assistant_turn",
+            payload={
+                "chat_id": "chat_bot_a",
+                "speaker_id": "bot_a",
+                "text": "Quite well, thanks for asking!",
+                "truncated": False,
+                "user_turn_id": user_id,
+            },
+        )
+    return user_id, bot_id
+
+
+def test_t98_3_hide_turn_flips_event_log_hidden_via_manual_edit(
+    client, tmp_path
+):
+    db = tmp_path / "test.db"
+    _seed_chat(db)
+    user_id, bot_id = _seed_turns(db)
+
+    response = client.post(
+        f"/chats/chat_bot_a/drawer/turn/hide/{user_id}",
+        data={"hidden": "1"},
+    )
+    assert response.status_code == 200
+
+    with open_db(db) as conn:
+        # event_log.hidden flipped to 1.
+        row = conn.execute(
+            "SELECT hidden FROM event_log WHERE id = ?", (user_id,)
+        ).fetchone()
+        assert int(row[0]) == 1
+
+        # manual_edit landed with the prior snapshot.
+        import json as _json
+
+        log = conn.execute(
+            "SELECT payload_json FROM event_log "
+            "WHERE kind = 'manual_edit' ORDER BY id DESC LIMIT 1"
+        ).fetchone()
+        payload = _json.loads(log[0])
+        assert payload["target_kind"] == "turn_hidden"
+        assert int(payload["target_id"]) == user_id
+        assert payload["prior_value"] == {"hidden": 0}
+        assert payload["new_value"] == {"hidden": 1}
+
+
+def test_t98_3_hidden_turn_disappears_from_read_recent_dialogue(
+    client, tmp_path
+):
+    """Hiding a turn must drop it from the prompt-window read.
+
+    ``read_recent_dialogue`` (chat.services.turn_common) filters
+    ``hidden = 0`` server-side, so flipping the flag via the drawer
+    route must surface immediately.
+    """
+    db = tmp_path / "test.db"
+    _seed_chat(db)
+    user_id, bot_id = _seed_turns(db)
+
+    # Sanity baseline — both turns visible before the hide.
+    with open_db(db) as conn:
+        from chat.services.turn_common import read_recent_dialogue
+
+        before = read_recent_dialogue(conn, "chat_bot_a", limit=10)
+        before_ids = [t["event_id"] for t in before]
+        assert user_id in before_ids
+        assert bot_id in before_ids
+
+    # Hide the user turn via the drawer route.
+    response = client.post(
+        f"/chats/chat_bot_a/drawer/turn/hide/{user_id}",
+        data={"hidden": "1"},
+    )
+    assert response.status_code == 200
+
+    with open_db(db) as conn:
+        from chat.services.turn_common import read_recent_dialogue
+
+        after = read_recent_dialogue(conn, "chat_bot_a", limit=10)
+        after_ids = [t["event_id"] for t in after]
+        assert user_id not in after_ids
+        assert bot_id in after_ids  # the unhidden bot turn still surfaces