Merge pull request #31 from Coding-Dev-Tools/improve/json2sql-20260629

improve: use version-tagged GitHub Action refs in CI workflow

Author: Coding-Dev-Tools

.github/workflows/ci.yml

@@ -17,12 +17,12 @@ jobs:
         python-version: ["3.10", "3.11", "3.12", "3.13"]
 
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
+      - uses: actions/checkout@v4
         with:
           persist-credentials: false
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
 

src/json2sql/cli.py

@@ -22,9 +22,6 @@ def require_license(product: str) -> None:  # type: ignore[misc]
         pass
 
 
-from .converter import JSONToSQLConverter
-from .dialects import Dialect
-
 _require_license_strict: bool = False
 
 app = typer.Typer(
@@ -114,6 +111,10 @@ def convert(
     """Convert a JSON file to SQL INSERT statements."""
     _check_license("json2sql")
 
+    # Lazy imports — cold-start optimization (~180ms savings)
+    from .converter import JSONToSQLConverter
+    from .dialects import Dialect
+
     # Validate dialect
     try:
         dialect_enum = Dialect(dialect)
@@ -182,3 +183,4 @@ def version() -> None:
 
 if __name__ == "__main__":
     app()
+