chore: scaffold project files

IDEA.md, SESSION.md, DECISIONS.md, CLAUDE.md, .gitignore.
Next session: invoke writing-plans skill against design spec.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

SESSION.md

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+# SESSION.md — AI Hell
+
+## Project Summary
+
+Passive horror webapp. AI-generated hellscape with infinite escalation, randomized timing, WebGL shader compositor, XTTS voices cloned from non-voice samples. Based on claude-avatar infra.
+
+## Context Files
+
+- `~/bin/CLAUDE.md` — global homelab instructions
+- `./IDEA.md` — project brief
+- `./DECISIONS.md` — decision log
+- `./docs/superpowers/specs/2026-04-10-ai-hell-design.md` — design spec (START HERE)
+
+## Infrastructure
+
+- **Target container:** CT on pve197, V100 32GB GPU passthrough
+- **Caddy:** hell.sethpc.xyz -> CT_IP:8400
+- **Repo:** git.sethpc.xyz/Seth/ai-hell
+
+## Session Notes
+
+### Design (2026-04-10)
+
+- Brainstormed from claude-avatar baseline
+- Key decisions: no avatar (pure environmental horror), hybrid arch (server brain + client rendering), infinite asymptotic escalation with randomized timing, XTTS fed non-voice samples for emergent creepiness
+- Stack: SDXL Turbo (images) + XTTS v2 (voices) + WebGL shaders (distortion) + Web Audio (3-layer mixer)
+- Design spec written and approved
+
+## Next Steps
+
+- [ ] Write implementation plan (invoke writing-plans skill against design spec)
+- [ ] Execute plan