feat(devkit): Add shared development tools for the wizard fleet

- gitea_client.py — reusable Gitea API client for issues, PRs, comments
- health.py — fleet health monitor (load, disk, memory, processes)
- notebook_runner.py — Papermill wrapper with JSON reporting
- smoke_test.py — fast smoke tests and bare green-path e2e
- secret_scan.py — secret leak scanner for CI gating
- wizard_env.py — environment validator for bootstrapping agents
- README.md — usage guide for all tools

These tools are designed to be used by any wizard via python -m devkit.<tool>.
Rising up as a platform, not a silo.

devkit/__init__.py

@@ -0,0 +1,9 @@
+"""
+Bezalel's Devkit — Shared development tools for the wizard fleet.
+
+A collection of CLI-accessible utilities for CI, testing, deployment,
+observability, and Gitea automation. Designed to be used by any agent
+via subprocess or direct Python import.
+"""
+
+__version__ = "0.1.0"