feat: add direnv/devbox configurations and fix tests

Author: derks

.envrc

@@ -0,0 +1,14 @@
+# Automatically sets up your devbox environment whenever you cd into this
+# directory via our direnv integration:
+
+eval "$(devbox generate direnv --print-envrc)"
+
+# check out https://www.jetpack.io/devbox/docs/ide_configuration/direnv/
+# for more details
+
+source_env_if_exists .envrc.local
+
+export SMTP_HOST=localhost
+export SMTP_PORT=1025
+export MEMCACHED_HOST=localhost
+export REDIS_HOST=localhost

.gitignore

@@ -52,7 +52,7 @@ pip-log.txt
 # Documentation
 doc/build
 # Unit test / coverage reports
-.coverage
+.coverage*
 htmlcov
 coverage-report
 .tox

CLAUDE.md

@@ -15,7 +15,6 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 - `pdm run pytest --cov=cement.core tests/core` - Test only core components
 
 **Development Environment:**
-- `make dev` - Start Docker development environment (recommended)
 - `pdm venv create && pdm install` - Set up local development environment
 - `pdm run cement --help` - Run the cement CLI
 
@@ -61,7 +60,6 @@ Cement is a CLI application framework built around a handler/interface pattern w
 - 100% test coverage required (pytest with coverage reporting)
 - 100% PEP8 compliance enforced via ruff
 - Type annotation compliance via mypy
-- Docker-first development approach
 - PDM for dependency management
 - Zero external dependencies for core framework (optional for extensions)
 
@@ -70,12 +68,11 @@ Cement is a CLI application framework built around a handler/interface pattern w
 - Tests located in `tests/` directory mirroring source structure
 - Core tests can run independently via `make test-core`
 - Coverage reports generated in `coverage-report/` directory
-- Tests must pass on Python 3.8+ (see docker containers for multiple versions)
 
 ## Extension Development
 
 When working with extensions:
 - Check `cement/ext/` for existing extension patterns
 - Optional dependencies declared in pyproject.toml under `[project.optional-dependencies]`
 - Extensions follow naming pattern `ext_<name>.py`
-- Must implement proper interface contracts
+- Must implement proper interface contracts