Add shared bible submodule, rename local bible to bible-local

- Add bible.git as submodule at bible/
- Rename bible/ → bible-local/ (project-specific architecture)
- Update CLAUDE.md to reference both bible/ and bible-local/
- Add AGENTS.md for Codex with same structure

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

AGENTS.md

@@ -0,0 +1,11 @@
+# Reanimator Core — Instructions for Codex
+
+## Shared Engineering Rules
+Read `bible/` — shared rules for all projects (CSV, logging, DB, tables, background tasks, code style).
+Start with `bible/kit/patterns/` for specific contracts.
+
+## Project Architecture
+Read `bible-local/` — Reanimator Core specific architecture.
+Read order: `bible-local/README.md` → `architecture/system-overview.md` → relevant files for the task.
+
+Every architectural decision specific to this project must be recorded in `bible-local/decisions/`.