Standardize on Python 3.13.x only

CLAUDE.md

@@ -17,7 +17,7 @@ See [CONTRIBUTING.md](CONTRIBUTING.md) for detailed architecture, code style, an
 - If `.venv` doesn't exist, run: `python -m venv .venv && pip install -e ".[dev]"`
 
 ### Python Version
-- Use Python 3.13+
+- Use Python 3.13.x
 - Check version: `python --version`
 
 ### Before Running Any Python Code

CONTRIBUTING.md

@@ -6,7 +6,7 @@ This guide covers development setup, architecture, and how to extend Drover.
 
 ### Prerequisites
 
-- Python 3.13+
+- Python 3.13.x
 - Virtual environment
 
 ### Environment Setup

README.md

@@ -35,7 +35,7 @@ Drover uses LLMs to analyze documents and suggest consistent, policy-compliant f
 
 ### Prerequisites
 
-- Python 3.13+
+- Python 3.13.x
 - [Ollama](https://ollama.ai/) (for local inference) or API keys for cloud providers
 
 ### Installation

docs/increments.md

@@ -54,7 +54,7 @@ Establish automated quality gates and consistent development workflows.
 
 ### GitHub Actions CI Pipeline
 - [ ] Create workflow for lint, type-check, and test on PR
-- [ ] Add matrix testing across Python 3.13+
+- [ ] Add matrix testing across OS platforms (Ubuntu, macOS, Windows) with Python 3.13
 - [ ] Configure dependency caching for faster builds
 - [ ] Add security scanning (pip-audit, bandit)
 - [ ] Set up coverage reporting with threshold enforcement

pyproject.toml

@@ -3,7 +3,7 @@ name = "drover"
 version = "0.1.0"
 description = "Document classification CLI that classifies files into organized folder structures"
 readme = "README.md"
-requires-python = ">=3.13"
+requires-python = ">=3.13,<3.14"
 license = { text = "MIT" }
 dependencies = [
     "langchain>=0.3,<1.0",