feat: major project restructure - move Django to backend dir and fix critical imports

- Restructure project: moved Django backend to backend/ directory
- Add frontend/ directory for future Next.js application
- Add shared/ directory for common resources
- Fix critical Django import errors:
  - Add missing sys.path modification for apps directory
  - Fix undefined CATEGORY_CHOICES imports in rides module
  - Fix media migration undefined references
  - Remove unused imports and f-strings without placeholders
- Install missing django-environ dependency
- Django server now runs without ModuleNotFoundError
- Update .gitignore and README for new structure
- Add pnpm workspace configuration for monorepo setup

templates/pages/terms.html

@@ -1,41 +0,0 @@
-{% extends 'base/base.html' %}
-{% load static %}
-
-{% block title %}Terms of Service - ThrillWiki{% endblock %}
-
-{% block content %}
-<div class="container mx-auto px-4 py-8">
-    <div class="bg-white dark:bg-gray-800 shadow rounded-lg p-6">
-        <h1 class="text-3xl font-bold mb-6">Terms of Service</h1>
-        
-        <div class="prose dark:prose-invert max-w-none">
-            <h2>1. Acceptance of Terms</h2>
-            <p>By accessing and using ThrillWiki, you accept and agree to be bound by the terms and provision of this agreement.</p>
-
-            <h2>2. User Content</h2>
-            <p>Users are responsible for the content they submit to ThrillWiki. Content must be accurate, legal, and not infringe on any third party's rights.</p>
-
-            <h2>3. Account Responsibilities</h2>
-            <p>You are responsible for maintaining the confidentiality of your account and password. You agree to accept responsibility for all activities that occur under your account.</p>
-
-            <h2>4. Prohibited Activities</h2>
-            <p>Users must not engage in any activity that:</p>
-            <ul>
-                <li>Violates any laws or regulations</li>
-                <li>Infringes on intellectual property rights</li>
-                <li>Harasses or discriminates against others</li>
-                <li>Spreads false or misleading information</li>
-            </ul>
-
-            <h2>5. Content Ownership</h2>
-            <p>Users retain ownership of their content but grant ThrillWiki a license to use, modify, and display the content on the platform.</p>
-
-            <h2>6. Modifications to Service</h2>
-            <p>ThrillWiki reserves the right to modify or discontinue the service at any time without notice.</p>
-
-            <h2>7. Limitation of Liability</h2>
-            <p>ThrillWiki is not liable for any indirect, incidental, special, consequential, or punitive damages.</p>
-        </div>
-    </div>
-</div>
-{% endblock %}