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/specs/README.md

@@ -0,0 +1,10 @@
+# Specs
+
+Approved specifications from the superpowers brainstorming workflow. Nothing non-trivial gets
+implemented without one.
+
+- Naming: `NNN-short-slug.md`, zero-padded, sequential.
+- A spec states **what** and **why**, plus acceptance criteria. Not **how**.
+- Front matter: `status: draft | approved | implemented | superseded`. No link to a plan — plans are
+  removed before merge.
+- Never delete an implemented spec; it is the record of intent.