[codex] Rename result row manifest to run_manifest

[christso]

Summary

• Rename new AgentV result row manifests from index.jsonl to run_manifest.jsonl while keeping RESULT_INDEX_FILENAME as a compatibility alias for existing callers.
• Add manifest_path: "run_manifest.jsonl" to new summary.json artifacts and route shared readers through summary pointer, canonical manifest, then legacy index.jsonl.
• Update CLI/dashboard/results/inspect/rerun/compare/trend/remote listing paths, docs, help text, and fixtures so new writes are canonical and legacy bundles remain readable without double-counting.

Validation

• bun --filter @agentv/core build && bun --filter @agentv/sdk build
• bun test apps/cli/test/commands/eval/result-layout.test.ts apps/cli/test/commands/eval/aggregate.test.ts apps/cli/test/commands/eval/artifact-writer.test.ts
• bun test packages/core/test/evaluation/results-repo.test.ts packages/core/src/evaluation/results-repo-cache.test.ts packages/core/test/evaluation/evaluate-programmatic-api.test.ts packages/core/test/evaluation/orchestrator.test.ts
• bun test apps/cli/test/commands/results/validate.test.ts apps/cli/test/commands/results/export.test.ts apps/cli/test/commands/results/export-e2e-providers.test.ts apps/cli/test/commands/results/report.test.ts apps/cli/test/commands/results/shared.test.ts apps/cli/test/commands/results/remote-auto-export.test.ts
• bun test apps/cli/test/commands/compare/compare.test.ts apps/cli/test/commands/trend/trend.test.ts apps/cli/test/commands/runs/rerun.test.ts
• bun run lint
• bun run typecheck
• Live dogfood with real Azure target and real Azure LLM grader: 1/1 pass, mean score 100%.

Evidence

• Private evidence branch: EntityProcess/agentv-private:evidence/av-lxje-run-manifest
• Evidence commit: 8d6ac2c
• Captured bundle confirms summary.json has manifest_path: "run_manifest.jsonl", run_manifest.jsonl exists, and no new index.jsonl was written.
• agentv results validate <target-bundle> exited 0 with one non-blocking warning because the validated target leaf directory is named azure rather than an ISO timestamp.

[cloudflare-workers-and-pages]

Deploying agentv with    Cloudflare Pages

Latest commit:	a6ba0be
Status:	✅  Deploy successful!
Preview URL:	https://c8f1b4e3.agentv.pages.dev
Branch Preview URL:	https://results-run-manifest.agentv.pages.dev

View logs