docs: align with satware AG best practices

- Delete deprecated CLAUDE.md
- Create root-level AGENTS.md for AI assistant guidance
- Create SDD constitution in .specify/memory/constitution.md
- Align documentation with PARA structure (docs/product/project-brief.md, docs/tech/stack.md, docs/plans/)
- Add standardized YAML frontmatter to all documentation files
- Update README.md with saTway branding and structure

docs/learnings/2026-02-27-initial-setup.md

@@ -1,3 +1,14 @@
+---
+description: >-
+  Initial setup and baseline verification for the mw-pfeddersheim-workstation
+  infrastructure project.
+tags:
+  - learning
+  - setup
+  - baseline
+last_updated: '2026-03-09'
+---
+
 # Initial Setup and Baseline - 2026-02-27
 
 ## Context
@@ -15,4 +26,4 @@ Starting the formal infrastructure management for the `mw-pfeddersheim-workstati
 
 ## Lessons Learned
 - Git status confirms all initial files are untracked.
-- Structure follows PARA for documentation and standard Ansible layout.
+- Structure follows PARA for documentation and standard Ansible layout.