Initial commit: AirCoding V1.0.0 Alpha architecture baseline

Complete architecture document set with multi-model review remediation:
- Frozen interface contracts, runtime semantics, DB schemas
- Event/tool/error/provider registries
- Scheduler and main agent state machines
- C4 module/code views, solution architecture, baseline V1
- Multi-model review reports and joint assessment
- Phase-gate remediation complete (P0/P1/P2/UX resolved)
- Implementation plan with T-000A through T-045
- Reference folders kept as placeholders only

reference/openai-codex/.gitignore

@@ -0,0 +1,94 @@
+# deps
+# Node.js dependencies
+node_modules
+.pnpm-store
+.pnpm-debug.log
+
+# Keep pnpm-lock.yaml
+!pnpm-lock.yaml
+
+# build
+dist/
+bazel-*
+user.bazelrc
+build/
+out/
+storybook-static/
+
+# ignore README for publishing
+codex-cli/README.md
+
+# ignore Nix derivation results
+result
+
+# editor
+.vscode/
+.idea/
+.history/
+.zed/
+*.swp
+*~
+
+# cli tools
+CLAUDE.md
+.claude/
+AGENTS.override.md
+
+# caches
+.cache/
+.turbo/
+.parcel-cache/
+.eslintcache
+.nyc_output/
+.jest/
+*.tsbuildinfo
+
+# logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# env
+.env*
+!.env.example
+.venv/
+
+# package
+*.tgz
+
+# ci
+.vercel/
+.netlify/
+
+# patches
+apply_patch/
+
+# coverage
+coverage/
+
+# personal files
+personal/
+
+# os
+.DS_Store
+Thumbs.db
+Icon?
+.Spotlight-V100/
+
+# Unwanted package managers
+.yarn/
+yarn.lock
+
+# release
+package.json-e
+session.ts-e
+CHANGELOG.ignore.md
+
+# nix related
+.direnv
+.envrc
+
+# Python bytecode files
+__pycache__/
+*.pyc