feat: polish CSV header format with improved metadata and column naming

tests/physics/test_multi_branch.py

@@ -464,11 +464,11 @@ class TestMultiBranchCSVExport:
         df = pd.read_csv(csv_path, comment="#")
 
         # Should have total spectrum column
-        assert "spectrum" in df.columns
+        assert "total_spectrum" in df.columns
 
         # Should have per-branch spectrum columns (intensity/endpoint/transition are in the header)
-        assert "branch_1_spectrum" in df.columns
-        assert "branch_2_spectrum" in df.columns
+        assert "branch 1" in df.columns
+        assert "branch 2" in df.columns
 
         # Should NOT have repeated per-branch metadata columns
         assert "branch_1_intensity" not in df.columns
@@ -502,7 +502,7 @@ class TestMultiBranchCSVExport:
 
         df = pd.read_csv(csv_path, comment="#")
 
-        assert "spectrum" in df.columns
+        assert "total_spectrum" in df.columns
         assert "Fermi" in df.columns
 
 

tests/quality/test_logging_utils.py

@@ -154,7 +154,7 @@ class TestCSVMetadataHeader:
             lines = f.readlines()
 
         assert any("# beta-spectrum v" in line for line in lines)
-        assert any("0.3.0" in line for line in lines)
+        assert any("0.4.0" in line for line in lines)
         os.unlink(filename)
 
     def test_header_contains_timestamp(self):
@@ -236,7 +236,9 @@ class TestCSVMetadataHeader:
         with open(filename, "r") as f:
             content = f.read()
 
-        assert "# git_commit:" in content
+        # Check for version with build hash instead of git_commit line
+        assert "# beta-spectrum v" in content
+        assert "(build." in content
         os.unlink(filename)
 
     def test_header_contains_corrections(self):
@@ -264,8 +266,12 @@ class TestCSVMetadataHeader:
             content = f.read()
 
         assert "# corrections:" in content
-        assert "phase_space" in content
-        assert "fermi" in content
+        # phase_space and fermi are basic components and should not be listed
+        assert "screening" in content
+        assert "finite_size" in content
+        assert "charge_dist" in content
+        assert "radiative" in content
+        assert "exchange" in content
         os.unlink(filename)