[005] Solution 99FZF

[Ilia Alenabi (iliall)]

Agent-Generated Summary

Created a Flask-based Python backend API for the Energy Auditing Field App MVP. The implementation includes:

1. User Account Management:

   • POST /api/register - User registration with auto-login
   • POST /api/login - User authentication
   • POST /api/logout - Session termination
   • GET /api/user - Current user info

2. Job Management:

   • POST /api/jobs - Create job with address, builder, scheduled date, house volume, conditioned area, and optional fields
   • GET /api/jobs - List all jobs for logged-in user in reverse chronological order
   • GET /api/jobs/{job_id} - Get job details with all sections

3. Inspection Workflow:

   • Checklist: GET/PUT /api/jobs/{job_id}/checklist with 10 items from seed data, status tracking (Not Started/Passed/Failed/N/A), and summary calculation
   • Blower Door Test: GET/PUT /api/jobs/{job_id}/blower-door with ring configuration, multi-point pressure data, and calculations for CFM50, ACH50, n-factor, R-squared, and compliance (ACH50 <= 3.0)
   • Duct Leakage Test: GET/PUT /api/jobs/{job_id}/duct-leakage supporting TDL, DLO, and Both test types with CFM25 calculations and compliance checks
   • Photos: GET/POST /api/jobs/{job_id}/photos and DELETE /api/jobs/{job_id}/photos/{photo_id} for image management (max 10 photos, JPEG/PNG/WebP only)

4. Job Status Management:

   • Automatic status transitions: Pending -> In Progress -> Completed based on completion criteria
   • Warnings for low R-squared (< 0.98) and house pressure outside -27 to -23 Pa range do not block completion

5. Technical Details:

   • Uses Flask for HTTP API
   • In-memory storage for users, jobs, and photos
   • Session-based authentication
   • UTC timezone for all timestamps
   • Seed data loaded from assets/mvp-seed-data.json for checklist template and calibration constants

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Completion time: ~434 seconds

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This pull request is solution 99FZF for issue #5.