feat: initial itpp-docs setup with MkDocs Material

- mkdocs.yml with dark slate theme, nav for 12 ITPP projects
- build-docs.sh aggregates docs from all project repos
- .gitea/workflows/docs-publish.yml for nightly rebuild+deploy
- README and CHANGELOG for the itpp-docs repo itself
- docs-source/ populated from all 12 repos
- site/ ready for deployment to docs.itpropartner.com

docs-source/scripts/CHANGELOG.md

@@ -0,0 +1,19 @@
+# scripts — CHANGELOG
+
+## 2026-07-21 — Purpose Descriptions
+
+- Added one-line purpose descriptions for all 78 scripts in README.md
+- Backup scope documented in README header
+
+## 2026-07-16 — Audit Remediation
+
+- Recategorized scripts and removed Garrison Code Watch from cron
+- `_fetch_body.py` moved to Email (internal utility)
+- `mcp-mysql.py` moved to Hermes Internal (MCP server)
+- `unsubscribe-scanner.py` and `daily-feed-summary.py` moved to Personal
+- `garrison-code-watch.py` cron removed, script archived
+
+## 2026-07-15 — Initial Inventory
+
+- Initial commit: 79 scripts across 16 categories catalogued in README.md
+- 31 cron-attached scripts, 48 manual/indirect