A dot on the loaded model, and a new chat that matches its model

The model menu asks each connection's /v1/models for the load state
llama-swap reports there and marks the loaded model; endpoints that state
nothing (a hosted API) get no dot. The new-chat screen offered the generic
three efforts whatever the model took, so Bonsai's xhigh default showed as
off. The composer was as wide as its widest hint. And the Doors of Durin are
a riddle: Speak friend and enter.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_ui_js.py

@@ -219,6 +219,19 @@ def test_the_tab_bar_edge_fade_is_covered_when_nothing_overflows():
     assert solid >= float(shadow.group(1)) == float(sizes.group(2))
 
 
+def test_the_composer_is_as_wide_as_its_column_not_its_hint():
+    """With `max-width` and auto margins alone, the box was as wide as its
+    widest content inside a flex column, so the vision hint under it decided:
+    768px for GPT-OSS ("has no vision, so images will not be sent") and 538px
+    for a model that sees images. Reported from the live instance with four
+    screenshots."""
+    chat = (ROOT / "web/static/css/chat.css").read_text(encoding="utf-8")
+    start = chat.index(".composer__inner {")
+    rule = chat[start : chat.index("}", start)]
+    assert "width: 100%" in rule
+    assert "max-width: var(--thread-max-width)" in rule
+
+
 def test_the_two_ends_of_the_shell_stay_level():
     """The sidebar footer and the composer sit either side of the same vertical
     edge and are both content-sized, so without a common floor they end at