verbose live UI + tool-level SSE events + Groq default + regression tests

tests/test_prompts.py

@@ -0,0 +1,30 @@
+"""Regression: every prompt file loads, render() substitutes placeholders."""
+
+from pathlib import Path
+
+import pytest
+
+from api.prompts import PROMPTS_DIR, load, render
+
+PROMPT_NAMES = sorted(
+    p.stem for p in PROMPTS_DIR.iterdir() if p.suffix == ".txt"
+)
+
+
+@pytest.mark.parametrize("name", PROMPT_NAMES)
+def test_prompt_loads(name):
+    text = load(name)
+    assert text  # non-empty
+
+
+def test_render_substitutes():
+    out = render("synthesize.user", question="how many?", findings_block="x: 1")
+    assert "how many?" in out
+    assert "x: 1" in out
+    assert "{question}" not in out and "{findings_block}" not in out
+
+
+def test_render_unknown_placeholder_raises():
+    # str.format raises KeyError on missing keys
+    with pytest.raises(KeyError):
+        render("synthesize.user", question="q")  # missing findings_block