feat(ui): onboarding suggestion chips with one-tap submit, keyboard access, and mobile scroll row

tests/unit/test_config.py

@@ -1,8 +1,12 @@
 """Unit tests: settings defaults & env overrides."""
 from __future__ import annotations
 
+import json
 from typing import Any
 
+import pytest
+from pydantic_settings import SettingsError
+
 from app.config import Settings
 
 
@@ -32,6 +36,31 @@ def test_env_override(monkeypatch) -> None:
     assert s.llm_chat_model == "juggernaut"
 
 
+def test_suggestions_default_is_three_plus_real_questions() -> None:
+    s = _settings()
+    assert len(s.suggestions) >= 3
+    assert all(isinstance(q, str) and q.strip() for q in s.suggestions)
+    # Distinct chips only — duplicates in the onboarding row are noise.
+    assert len({q.strip().lower() for q in s.suggestions}) == len(s.suggestions)
+
+
+def test_suggestions_env_override_is_json_list(monkeypatch) -> None:
+    override = [
+        "How do I back up with Borg?",
+        "How is my K3S cluster set up?",
+        "How do I deploy a service?",
+    ]
+    monkeypatch.setenv("BOR_SUGGESTIONS", json.dumps(override))
+    s = _settings()
+    assert s.suggestions == override
+
+
+def test_suggestions_malformed_json_fails_loudly(monkeypatch) -> None:
+    monkeypatch.setenv("BOR_SUGGESTIONS", "[not valid json")
+    with pytest.raises(SettingsError):
+        _settings()
+
+
 def test_effective_api_key_fallback(monkeypatch) -> None:
     monkeypatch.delenv("AIPI_KEY", raising=False)
     s = _settings()