chore: upgrade langsmith to >=0.8.18 (#352)

* chore: remove temporary seed and DDL extraction files

These files (seed_tdml_summaries.py and extracted DDL scripts) were created
during development for testing database connectivity and seeding teradataml
summaries. They are no longer needed and should not be version-controlled.

* chore: upgrade langsmith to >=0.8.18

Add explicit langsmith dependency with minimum version 0.8.18.
Updates lock file to 0.9.1, the latest compatible version.

* chore: upgrade pydantic-settings to >=2.14.2

Add explicit pydantic-settings dependency with minimum version 2.14.2.
Updates lock file to 2.14.2.

Author: dtehan-td

pyproject.toml

@@ -24,13 +24,15 @@ classifiers = [
 ]
 dependencies = [
     "pydantic>=2.8.0,<3.0.0",
+    "pydantic-settings>=2.14.2",
     "fastmcp>=3.2.0,<3.4.2",
     "mcp[cli]>=1.0.0,<2.0.0",
     "teradatasqlalchemy>=20.0.0.0",
     "python-dotenv>=1.0.0",
     "PyYAML>=6.0.0",
     "sqlalchemy>=2.0.0,<3.0.0",
     "starlette>=1.3.1",
+    "langsmith>=0.8.18",
 ]
 
 [project.optional-dependencies]