Initial scaffold: README, .gitignore, dir skeleton

Project: NixOS live USB that boots a Windows workstation into a headless
"AI mode" with Ollama + CUDA + MinIO-backed model sync.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

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+# Nix build outputs
+result
+result-*
+
+# Baked-in secrets / host-specific files copied at build time
+keys/
+
+# Editor noise
+.direnv/
+.vscode/
+*.swp
+.DS_Store
+
+# Do not commit the AI-CONFIG contents
+AI-CONFIG/
+minio.env

README.md

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+# ai-kraken
+
+NixOS-based live USB that boots a Windows workstation (RTX 3080 Ti, 128GB RAM) into a
+headless "AI mode" with Ollama, CUDA, and on-demand model sync from a LAN MinIO.
+Windows install remains untouched.
+
+## Status
+
+Design phase. See `docs/specs/` for the current design document.
+
+## Quick links
+
+- Design doc: `docs/specs/2026-04-19-nixos-ai-live-usb-design.md` (pending)
+- Implementation plan: `docs/plans/` (pending)
+- Wiki: long-form notes, runbook, MinIO bucket layout conventions