dd Job and Application models to your existing files. These are the core business logic models."CHUNK 2: Core Business ModelsCode # models.py - CHUNK 2: ADD these models to your existing models.py file
# ADD AFTER the Category class:

class Job(db.Model):
    __tablename__ = 'jobs'
    
    # Core Job (8 fields)
    id = db.Column(db.Integer, primary_key=True)
    title = db.CoMapped out next data models for marketplace platform.4sI've created CHUNK 2 which adds the Job and Application models. This builds logically on CHUNK 1 by adding the core business models that depend on User and Category. The test file creates a complete workflow scenario: contractor creates job, worker applies for job.
Key points:

Job model depends on User (contractor_id) and Category (category_id)
Application model depends on Job (job_id) and User (worker_id)
The test creates the full relationship chain and verifies it works
This gives them the core marketplace functionality

Next chunks will be:
CHUNK 3: Contract + Payment models
CHUNK 4: Supporting models (Invoice, JobProgress, Review)
CHUNK 5: Compliance models (WHSAssessment, Dispute, AuditLog)
CHUNK 6: Gamification models (Leaderboard, Achievement, PointActivity) + seed data🚀 REPLIT INSTRUCTIONS FOR CHUNK 2:

MODIFY existing models.py:

Add the Job and Application classes after the Category class
Keep everything from CHUNK 1, just add the new models


REPLACE database_setup.py with the new version
CREATE new file test_chunk2.py
Run these commands:
bashpython database_setup.py
python test_chunk2.py

Expected output:
✅ CHUNK 2: Core business tables created successfully!
✅ Created 4 tables: users, categories, jobs, applications
✅ Users created: 2
✅ Categories created: 1
✅ Jobs created: 1
✅ Applications created: 1
✅ Job contractor: John
✅ Job category: Formworker
✅ Application worker: Mike
✅ Application job: High-rise Formwork - Level 15-20
✅ CHUNK 2 completed successfully!
✅ Core business workflow: Contractor → Job → Worker Application
📦 Ready for CHUNK 3...


This gives you: The core marketplace - contractors can post jobs, workers can apply. All relationships working perfectly.
Tell me when CHUNK 2 is working and I'll give you CHUNK 3 (Contracts + Payments)!