feat: add all application source code

- apps/api: FastAPI backend with Dockerfile
- apps/web: Next.js frontend with Dockerfile
- apps/sensor: Signal collection agent
- packages: shared packages

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

apps/api/src/plugins/security/__init__.py

@@ -0,0 +1,17 @@
+"""
+AWOOOI Security Plugins
+"""
+
+from .privacy_shield import (
+    PrivacyShield,
+    privacy_shield,
+    SensitiveDataType,
+    RedactionResult,
+)
+
+__all__ = [
+    "PrivacyShield",
+    "privacy_shield",
+    "SensitiveDataType",
+    "RedactionResult",
+]