Organize documentation into topic folders (Claude, Python, Zscaler, Project template)

Project template/CHANGELOG.md

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+# Changelog
+
+Document all notable changes to the project, grouped by version and release date.
+
+## Format
+
+Each version entry uses these sections (include only those that apply):
+
+- **Added** — new features
+- **Changed** — changes to existing functionality
+- **Fixed** — bug fixes
+- **Removed** — removed features
+- **Dependencies** — added, updated, or removed dependencies
+
+## Rules
+
+- Follow semantic versioning: `MAJOR.MINOR.PATCH`
+- Newest version goes at the top
+- Always update this file before bumping the version in `pyproject.toml`
+- Document changes as they are made, not all at once at release time