Initial commit - Stage 1 working version

Saving current working state before proceeding to Stage 2.
Includes:
- Backend: Python-based QC validator with shapefile processing
- Frontend: Drag-and-drop file upload interface
- Sample files for testing
- Documentation and revision history

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

revisions3/revision3.txt

@@ -0,0 +1,4 @@
+PRD:
+
+Front End Step 1:
+-IF it passes QC display "celebrate.png" (in this folder) on webpage, in front, large.