chore(repo): clean root and move docs

- Move docs to docs/; keep areas for prompts only
- Relocate Makefile to scripts/Makefile; update docs to use it
- Move ci.Dockerfile to docker/ci.Dockerfile; update compose
- Move commitlint config to .config and update hook
- Remove root AGENTS.md (use area AGENTS.md)

docs/README.md

@@ -0,0 +1,15 @@
+Repository Docs
+
+Purpose
+- Centralize human‑readable documentation. Area folders (COMMON/CTO/COO/CCO) are reserved for questions, proposals, and prompt modules.
+
+Key Documents
+- Git workflow: [git-workflow.md](git-workflow.md)
+- Local CI parity: [bootstrap-cicd.md](bootstrap-cicd.md)
+- Documentation style: [docs-style.md](docs-style.md)
+- Operational notes: [RESUME.md](RESUME.md), [TODO.md](TODO.md)
+- History: [history/BOOTSTRAP.md](history/BOOTSTRAP.md)
+
+Usage
+- Make targets moved to `scripts/Makefile`. Use `make -f scripts/Makefile <target>`.
+