fix: resolve dashboard 500 errors by injecting Qdrant point IDs into log retrieval

[paramsavla06]

Summary

Fixes the /logs and /search endpoints returning 500 Internal Server Error
when the dashboard attempts to fetch logs from Qdrant.

Problem

• LogDTO requires an id field, but Qdrant stores point IDs at the record
  root (Record.id), not inside the custom payload dict. This caused a
  Pydantic ValidationError on every retrieval call.
• The default CORS origins list was missing localhost:5174, blocking
  frontend dev servers that fall back to that port.

Changes

• services/log_service.py: Updated get_logs() and semantic_search()
  to copy r.id into the returned payload dictionaries.
• app_factory.py: Added http://localhost:5174 to the default
  allowed_origins fallback list.

Testing

• Verified GET /logs?limit=50 returns 200 OK with properly serialized
  LogDTO objects including id fields.
• Confirmed dashboard UI connects without CORS errors.

[github-actions]

⚠️ Merge Conflict Detected! This PR cannot be merged automatically because it conflicts with the main branch.

@🎨 Contributor: Please update your branch locally, resolve the conflicts, and push the updates. The pipeline has skipped this PR for now and moved on! 🚀