chore: bootstrap project structure (.tasks, .wiki, CLAUDE.md)

Adds canonical Karpathy LLM Wiki layout, .tasks/STATUS.md board,
and CLAUDE.md trigger set. Brings factory repo into projects-meta
indexing eligibility (sync-runner.ts:69 — needs .tasks/STATUS.md or
.wiki/index.md on default branch).

Bootstrap-manifest at .wiki/concepts/bootstrap-manifest.md records
skill versions used (project-bootstrap@1.7.0, layouts inline-fallback
from setup-wiki@1.0.0 / setup-tasks@1.0.0).

.tasks/STATUS.md

@@ -0,0 +1,8 @@
+# Task Board
+_Updated: 2026-05-06_
+
+Per-task deep context lives in `.tasks/<task-slug>.md` (created on demand by `using-tasks`).
+
+**Status legend:** 🔴 active · 🟡 paused · ⚪ ready · 🟢 done · 🔵 blocked · ⚫ cancelled
+
+---