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/plans/2026-02-27-next-steps.md

@@ -0,0 +1,31 @@
+---
+description: >-
+  Immediate next steps and priority tasks for workstation cleanup and repository
+  management.
+tags:
+  - plan
+  - history
+  - next-steps
+last_updated: '2026-02-27'
+---
+
+# Next Session Tasks - 2026-02-27
+
+## Priority 1 (Clean Up)
+- [ ] Address permission issues in `PhpstormProjects/satag-amicron-entity-bundle` and `SatagAmicronSix` to finish removal.
+- [ ] Decide on the fate of dirty repositories:
+    - `~/Projects/ShopifySyncApp` (New work)
+    - `~/Projects/firebird` (Subrepo modified)
+    - `~/Projects/djh-corporate-identity` (Untracked work)
+    - `~/WebstormProjects/onlyoffice` (Logic changes)
+
+## Priority 2 (Retention)
+- [ ] Confirm if repositories without remotes should be uploaded to Gitea/GitLab:
+    - `~/Projects/opus-transcribe`
+    - `~/Projects/20238-MediGruen-Naturprodukte-GmbH`
+    - `~/Projects/any-to-markdown`
+    - `~/Projects/pdf2md`
+
+## Context
+- Reclaimed 21GB today by removing clean remote repositories.
+- Workstation software cleanup is complete and synced to Ansible roles.