Show ml_score in the frontend findings list

[Aditya8369]

Before opening: make sure there is an issue tracking this work, and link it below. PRs without a linked issue may be closed without review.

Linked issue

Closes #36

What this PR does

successfully surfaced the ranker's ML score next to severity badges in the Findings view, added sample data for visual testing, persisted the ML score in the SQLite database backend, and added a sorting toggle.

Type of change

• Bug fix
• New feature
• ML model / training pipeline
• Refactor (no behaviour change)
• Documentation
• Tests only

ML tier (if applicable)

• Tier 1 — Triage
• Tier 2 — Predictive
• Tier 3 — Autonomous
• Not ML-related

Stack affected

• Backend
• Frontend
• Both

---

Changes

Backend

Added the ml_score column to the findings table in the database and handled automatic migrations. Updated scan tasks to insert the score and endpoints to retrieve it.

Frontend

Mapped ml_score from backend findings to frontend findings. Added mock scores to sample data to make visual testing instant.

New dependencies

NA

Database / schema changes

NA

---

Testing

How did you test this?

Backend tests were successfully run and passed.
Frontend production build compiled and completed successfully.

Checklist

• Tested locally end-to-end (upload ZIP or GitHub URL → scan → findings returned correctly)
• New ML model falls back gracefully when model file is absent
• No new console.error or unhandled Python exceptions introduced
• Added or updated tests where applicable
• requirements.txt / package.json updated if new dependencies added
• New model files (.pkl, .pt, etc.) are gitignored, not committed

---

Anything reviewers should focus on

NA

Screenshots (if UI changed)

NA