feat: Add comprehensive documentation suite and reorganize project structure

- Created complete documentation in docs/ directory
- Added PROJECT_OVERVIEW.md with feature highlights and getting started guide
- Added ARCHITECTURE.md with system design and technical details
- Added SECURITY.md with comprehensive security implementation guide
- Added DEVELOPMENT.md with development workflows and best practices
- Added DEPLOYMENT.md with production deployment instructions
- Added API.md with complete REST API documentation
- Added CONTRIBUTING.md with contribution guidelines
- Added CHANGELOG.md with version history and migration notes
- Reorganized all documentation files into docs/ directory for better organization
- Updated README.md with proper documentation links and quick navigation
- Enhanced project structure with professional documentation standards

f_scripts/shared/flagicon/flags/4x3/rw.svg

@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" height="480" width="640" viewBox="0 0 640 480">
+  <path fill="#20603d" d="M0 0h640v480H0z"/>
+  <path fill="#fad201" d="M0 0h640v360H0z"/>
+  <path fill="#00a1de" d="M0 0h640v240H0z"/>
+  <g transform="translate(511 125.4) scale(.66667)">
+    <g id="b">
+      <path id="a" d="M116.1 0L35.692 4.7l76.452 25.35L33.26 13.776l67.286 44.273L28.56 21.915l53.535 60.18-60.18-53.534 36.135 71.986L13.777 33.26l16.272 78.884L4.7 35.692 0 116.1-1-1z" fill="#e5be01"/>
+      <use height="100%" width="100%" xlink:href="#a" transform="scale(1 -1)"/>
+    </g>
+    <use height="100%" width="100%" xlink:href="#b" transform="scale(-1 1)"/>
+    <circle r="34.3" fill="#e5be01" stroke="#00a1de" stroke-width="3.4"/>
+  </g>
+</svg>