Address Feedback: Correct ts-jest description from "adds" to "version bump"

[Copilot]

Description

PR #574 description said "Adds ts-jest" but ts-jest was already present. These were version bumps:

• ts-jest: ^29.1.2 → ^29.4.6
• @types/jest: ^29.5.12 → ^29.5.14
• jest-util: ^30.2.0 → ^30.3.0

Also tightens the inline comment on the DB_PATH fallback in dailyRefinementJob.ts to reflect actual behaviour.

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📝 Documentation update
• 🎨 Code style update (formatting, renaming)
• ♻️ Refactoring (no functional changes)
• ⚡ Performance improvement
• ✅ Test update

Related Issue

Testing Done

• Tested locally
• Added/updated tests
• All tests passing

Screenshots (if applicable)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published

Co-Authors

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Summary by cubic

Fixes database path resolution in DailyRefinementJob to use env/config, normalize paths, and validate before running. Prevents job failures caused by hardcoded or missing paths and addresses feedback from #574.

• Bug Fixes
  • Read database path from DATABASE_URL or app config instead of a hardcoded value.
  • Resolve relative paths against the project root; support absolute paths.
  • Validate path and fail fast with clear logs; added basic tests for path handling.

^{Written for commit 62cbf0f. Summary will update on new commits.}