feat: complete monorepo structure with frontend and shared resources

- Add complete backend/ directory with full Django application
- Add frontend/ directory with Vite + TypeScript setup ready for Next.js
- Add comprehensive shared/ directory with:
  - Complete documentation and memory-bank archives
  - Media files and avatars (letters, park/ride images)
  - Deployment scripts and automation tools
  - Shared types and utilities
- Add architecture/ directory with migration guides
- Configure pnpm workspace for monorepo development
- Update .gitignore to exclude .django_tailwind_cli/ build artifacts
- Preserve all historical documentation in shared/docs/memory-bank/
- Set up proper structure for full-stack development with shared resources

backend/tests/fixtures/README.md

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+# Test Fixtures
+
+This directory contains test assets used by the e2e tests.
+
+## Required Files
+
+1. `test_photo.jpg`
+   - Used for testing photo uploads for parks and rides
+   - Recommended size: 1920x1080
+   - Max size: 5MB
+
+2. `test_avatar.jpg`
+   - Used for testing profile avatar uploads
+   - Recommended size: 500x500
+   - Max size: 2MB
+
+## Generating Test Images
+
+You can create these test images using any image editing software, or download placeholder images from:
+- https://picsum.photos/1920/1080 (for test_photo.jpg)
+- https://picsum.photos/500/500 (for test_avatar.jpg)
+
+Save the downloaded images with the correct filenames in this directory.
+
+## Usage
+
+The test files reference these images using relative paths:
+```python
+page.get_by_label("Photo").set_input_files("tests/fixtures/test_photo.jpg")
+page.get_by_label("Avatar").set_input_files("tests/fixtures/test_avatar.jpg")
+```
+
+Make sure these files exist before running the tests.