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Issue #31 Implementation Doc Stub

1. Issue reference

  • GitHub issue: #31
  • Issue title: [Backend][LLM] Reasoning-model grounded synthesis + safe multilingual output
  • Issue type: feature
  • Milestone: Backend RAG M3 - Retrieval & Chat Quality

2. Summary

  • What this issue changed: TBD
  • Why the change was needed: improve answer synthesis quality while keeping multilingual output safe and grounded.

3. Initial repo state

  • Relevant behavior before implementation: reasoning and multilingual behavior exist, but the release plan treats grounded synthesis and safe output as a dedicated delivery item.
  • Known constraints or gaps at start: there is no issue-specific plan doc under docs/plans/ for this synthesis/output behavior yet.

4. Plan doc referenced

  • Plan doc path: TBD - create a grounded synthesis and multilingual output plan under docs/plans/
  • Plan status at implementation start: TBD
  • Was the plan updated during implementation?: TBD
  • If yes, what changed in the plan?: TBD

5. Decisions taken

Decision Reason Alternative rejected
Stub only Reserve issue-level implementation traceability before coding starts. Capturing final synthesis behavior only in prompt diffs or PR discussion.

6. Files changed

File Change summary
docs/implementation/issue-31-grounded-synthesis-safe-multilingual-output.md Created implementation doc stub.

7. Migrations / schema changes

  • Migration files: none yet
  • Schema changes: none yet
  • Data backfill or manual steps: none yet
  • Rollback notes: not applicable yet

8. API changes

Surface Change Compatibility impact
None yet No implementation details recorded yet. None

9. Tests added or updated

Test file or suite Change
None yet No implementation work has started.

10. Risks / caveats

  • Output quality and safety can regress subtly if reasoning prompts, guardrails, or language post-processing drift from the plan.

11. Follow-up work

  • Create the matching synthesis/output plan doc.
  • Record grounding, fallback, and safety validation evidence during implementation.

12. Final repo state

  • Relevant behavior after implementation: not implemented yet; stub created to reserve the issue record.
  • Remaining limitations: plan, implementation, and verification details are pending.

13. Docs updated

Doc path Update summary
docs/implementation/issue-31-grounded-synthesis-safe-multilingual-output.md Added initial implementation doc stub.