chore: bootstrap agent-ready docs, rules, spec and research

Adds AGENTS.md (clean-room and Bun rules), pointer files, agent permission
configs, docs tree, the STaurtomation design spec (draft) and sanitized
licensing/competitor research.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/plans/README.md

@@ -0,0 +1,11 @@
+# Plans
+
+Implementation plans from the superpowers writing-plans workflow. **Transient:** a plan lives only on
+its feature branch and is removed with `git rm` before the merge request is opened. This README stays.
+
+- Naming: `NNN-short-slug.md`, matching its spec number.
+- Links back to its spec. Bite-sized checkbox tasks with exact file paths, test commands, and
+  commit checkpoints.
+- Written for an engineer with zero context for this codebase — spell out the obvious.
+- Tick checkboxes as you go so another agent can resume an interrupted session.
+- Front matter: `status: draft | approved | in-progress`. There is no `done` — a finished plan is deleted.