chore: upgrade Python version to 3.13 and update project config

Author: nvarscar

.github/actions/publish/action.yaml

@@ -8,7 +8,7 @@ inputs:
   PYTHON_VERSION:
     description: Python version
     required: false
-    default: 3.9
+    default: "3.13"
   PYPI_TOKEN:
     description: PyPI API token.
     required: true

.github/actions/test-docs/action.yaml

@@ -8,7 +8,7 @@ inputs:
   PYTHON_VERSION:
     description: Python version
     required: false
-    default: 3.9
+    default: "3.13"
   POSTGRES_VERSION:
     description: Postgres major version to use
     required: false

.github/actions/test/action.yaml

@@ -8,7 +8,7 @@ inputs:
   PYTHON_VERSION:
     description: Python version
     required: false
-    default: 3.9
+    default: "3.13"
   UV_EXTRAS:
     description: PyPI extras to install
     required: false

.kiro/steering/api-standards.md

@@ -0,0 +1 @@
+../../.windsurf/rules/api-standards.md

.kiro/steering/api-standards.md

@@ -0,0 +1 @@
+../../.windsurf/rules/cicd-workflow.md

.kiro/steering/cicd-workflow.md

@@ -0,0 +1 @@
+../../.windsurf/rules/code-conventions.md