chore: bootstrap project structure

- .wiki/ with canonical Karpathy layout (CLAUDE.md, index, log, overview, raw)
- .tasks/ with canonical STATUS.md board
- CLAUDE.md with skill triggers
- Bootstrap manifest in .wiki/concepts/

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

CLAUDE.md

@@ -0,0 +1,11 @@
+# CLAUDE.md
+# Agent instructions. Each line is a trigger for an installed skill.
+
+talk like a caveman
+use superpowers
+use project wiki
+use task management system
+check across all projects
+pull remote before work
+follow project discipline
+we're on Windows