fix: extract_statistics drops large numbers and trailing % signs (#1153)

* fix: extract_statistics misses comma-less numbers and drops trailing %

* fix: same extract_statistics number/percent bug in services copy

* test: extract_statistics captures full numbers and percent signs

tests/test_extract_statistics.py

@@ -0,0 +1,25 @@
+"""Tests for extract_statistics (src/search/content.py)."""
+import pytest
+
+pytest.importorskip("bs4")  # content.py imports BeautifulSoup at module load
+
+from src.search.content import extract_statistics
+
+
+def test_captures_comma_less_large_number():
+    # Regression: `\d{1,3}(?:,\d{3})*` matched only the first 3 digits of a
+    # comma-less number, so "50000" was never captured whole.
+    assert any(s.startswith("50000") for s in extract_statistics("about 50000 users"))
+
+
+def test_keeps_percent_sign():
+    # Regression: a trailing `\b` after the optional unit dropped the "%".
+    assert "12%" in extract_statistics("conversion rose to 12% this quarter")
+
+
+def test_comma_grouped_number():
+    assert any(s.startswith("1,000,000") for s in extract_statistics("revenue of 1,000,000 dollars"))
+
+
+def test_four_digit_year_captured():
+    assert any("2024" in s for s in extract_statistics("released in 2024"))