Changed the API response to embed Payload as a JSON object using
json.RawMessage instead of returning it as a JSON-encoded string
inside the JSON response. Added MetricResponse type with ToResponse
converter method.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Replace /api/v1/metrics/run/{runID} and /api/v1/metrics/repo/{org}/{repo}
with /api/v1/metrics/repo/{org}/{repo}/{workflow}/{job} for more precise
filtering by workflow and job name.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add a new receiver application under cmd/receiver that accepts metrics
via HTTP POST and stores them in SQLite using GORM. The receiver expects
GitHub Actions style execution context (org, repo, workflow, job, run_id).
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
