fix: ui_control rejects the advertised rag toggle (#1763)

tests/test_ui_control_rag_toggle.py

@@ -0,0 +1,36 @@
+"""The `rag` UI toggle must be accepted.
+
+do_ui_control advertises `rag` as a valid toggle in its own docstring and in
+get_toggles ("Available toggles: web, bash, rag, ..."), and the frontend
+fully wires it (chatStream.js maps rag -> rag-toggle / rag-indicator-btn).
+But valid_toggles omitted "rag", so `toggle rag on` returned an "Unknown
+toggle" error - the advertised capability was dead.
+"""
+import asyncio
+
+from src.ai_interaction import do_ui_control
+
+
+def test_toggle_rag_on_is_accepted():
+    r = asyncio.run(do_ui_control("toggle rag on"))
+    assert r.get("ui_event") == "toggle"
+    assert r.get("toggle_name") == "rag"
+    assert r.get("state") is True
+    assert "error" not in r
+
+
+def test_toggle_rag_off_is_accepted():
+    r = asyncio.run(do_ui_control("toggle rag off"))
+    assert r.get("toggle_name") == "rag"
+    assert r.get("state") is False
+    assert "error" not in r
+
+
+def test_unknown_toggle_still_rejected():
+    r = asyncio.run(do_ui_control("toggle bogus on"))
+    assert "error" in r
+
+
+def test_existing_toggle_still_works():
+    r = asyncio.run(do_ui_control("toggle web on"))
+    assert r.get("toggle_name") == "web" and r.get("state") is True