feat(dashboard): serve trace session artifacts

[christso]

Summary

AgentV Dashboard can now lazily inspect an eval result's agentv.trace.v1 sidecar from local or configured remote results sources. The new trace-session API mirrors the existing unscoped and project-scoped route pattern and wraps the shared Dashboard read model with typed artifact states, so missing, dangling, invalid, unsupported, or rejected trace artifacts do not break run detail.

Design Notes

• Moved the pure Dashboard trace-session projector into @agentv/core and kept the Dashboard file as a thin re-export, so the CLI server and React app consume one read model.
• Added GET /api/runs/:filename/evals/:evalId/trace-session and GET /api/projects/:projectId/runs/:filename/evals/:evalId/trace-session.
• Reused manifest lookup, artifact pointer resolution, remote sidecar reads, and run-artifact path protections already used by transcript/file detail routes.
• Raw OTLP or other non-agentv.trace.v1 artifacts return status: "unsupported"; normalization remains downstream av-kve.3 scope.

Validation

• bun --filter @agentv/core build
• bun test apps/cli/test/commands/results/serve.test.ts
• bun --filter @agentv/dashboard test ./src/lib/trace-read-model.test.ts
• bun run typecheck
• bun run lint
• bun --filter @agentv/dashboard build (passes; existing Vite chunk-size warning only)

Notes

• Bead: av-kve.2
• Refs serve: add Hono trace/session endpoints over run artifacts #1456
• List/detail/aggregate routes still avoid reading trace/transcript bodies. The remote trace-session detail route reads only the requested sidecar from agentv/artifacts/v1 and does not materialize that sidecar into the results clone.

---

[cloudflare-workers-and-pages]

Deploying agentv with    Cloudflare Pages

Latest commit:	f87be02
Status:	✅  Deploy successful!
Preview URL:	https://259dae15.agentv.pages.dev
Branch Preview URL:	https://feat-av-kve-2-trace-session.agentv.pages.dev

View logs