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/claude-hud-0.0.12/.gitignore

@@ -0,0 +1,59 @@
+# Dependencies
+node_modules/
+
+# Build artifacts
+# dist/ is gitignored but exists on main - CI builds and commits it after each merge.
+# See .github/workflows/build-dist.yml
+dist/
+*.tsbuildinfo
+
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids/
+*.pid
+*.seed
+*.fifo
+
+# OS files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+
+# Environment/secrets (safety)
+.env
+.env.*
+.claude/settings.json
+.claude/*.local.json
+*.pem
+*.key
+secrets/
+credentials/
+
+# Test coverage
+coverage/
+.nyc_output/
+
+# Temp files
+tmp/
+temp/
+*.tmp
+
+# Lock files (keep package-lock.json for npm)
+yarn.lock
+bun.lock