feat(backend): Implement Agent Output Quality Scoring and Feedback Loop

[devJaja]

Summary

Add automatic quality scoring for agent outputs based on completeness, relevance, and format compliance, feeding scores back to reputation system.

Motivation

Currently, agent quality is only assessed by human review. Automatic scoring provides immediate quality feedback and enables data-driven agent selection.

Acceptance Criteria

• Quality scoring function evaluates: completeness (has all required sections), relevance (matches prompt intent), format (follows expected schema)
• Score range: 0-100 (normalized)
• Scores stored with task execution records
• Scores feed into on-chain reputation updates
• Low-scoring outputs flagged for review
• Quality metrics aggregated per agent (avg, min, max, trend)
• Scoring rules configurable per agent type
• Unit tests for scoring logic and edge cases

Files to Modify

File	Action
backend/src/services/qualityScorer.ts	New: output quality scoring service
backend/src/services/qualityScorer.types.ts	New: scoring types
backend/src/coordinator/coordinator.ts	Add quality scoring after agent execution
backend/src/agents/research/research.ts	Define research output schema for scoring
backend/src/agents/coding/coding.ts	Define coding output schema for scoring
backend/src/services/qualityScorer.test.ts	New: scoring tests

How to Contribute

1. Create branch feat/agent-quality-scoring
2. Build quality scoring service with configurable rules
3. Integrate scoring into coordinator workflow
4. Define output schemas per agent type
5. Write unit tests for scoring logic
6. Run npm run test && npm run lint before submitting PR

[thelmaoffiong]

I’d be happy to take this issue on. Could you please assign it to me? I’m confident I can implement the agent output quality scoring and feedback loop.

[grantfox-oss]

🦊 GrantFox — @thelmaoffiong has been assigned to this issue as part of the Third Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #277)
2. Your PR will be reviewed by the Epta-Node maintainers

Good luck! Track your progress on GrantFox.