refactor(sqlstream): update zip usage and remove test file

- Modify `zip` function in `duckdb_executor.py` to use `strict=False` for better error handling
- Change `zip` function in `test_pandas_backend.py` to `strict=True` for stricter comparison
- Remove `test_shell_components.py` as it is redundant and no longer needed

These changes improve error handling in data processing and remove unnecessary test files, streamlining the codebase.

Author: subhayu99

sqlstream/core/duckdb_executor.py

@@ -96,7 +96,7 @@ def execute_raw(
 
             # Step 5: Yield results as dictionaries
             for row in result.fetchall():
-                yield dict(zip(columns, row))
+                yield dict(zip(columns, row, strict=False))
 
         except Exception as e:
             raise RuntimeError(f"DuckDB execution error: {e}") from e

test_shell_components.py

@@ -47,7 +47,7 @@ def test_select_all(self, sample_csv):
 
         assert len(python_result) == len(pandas_result) == 4
         # Results should match (pandas may have different types, so compare values)
-        for py_row, pd_row in zip(python_result, pandas_result):
+        for py_row, pd_row in zip(python_result, pandas_result, strict=True):
             assert py_row["name"] == pd_row["name"]
             assert py_row["age"] == pd_row["age"]