fix(core): simplify repo resolver contract - #1619

Summary

Repo resolver scripts now choose only an acquisition path: {"status":"handled","path":"..."} handles a repo and {"status":"skip"} falls through. AgentV rejects the old handled/source/type/origin stdout shape instead of carrying compatibility aliases, and resolver output no longer advertises or rewrites a remote origin.

Git resolver paths still go through AgentV clone, sparse checkout, commit resolution, ancestor walking, and detached checkout. Non-Git resolver paths are treated as static directory snapshots: AgentV copies the directory into workspace.repos[].path, ignores Git-only fields for that repo, and restores resets by copying the same snapshot source again.

Docs now describe the machine-local repo_resolvers contract directly and remove the stale eval-level workspace.repos[].resolver row.

Related: Bead av-bp7z

Verification

• bun test packages/core/test/evaluation/workspace/repo-manager.test.ts
• bun test packages/core/test/evaluation/validation/config-validator.test.ts packages/core/test/evaluation/validation/eval-validator.test.ts packages/core/test/evaluation/workspace-config-parsing.test.ts
• bun --filter @agentv/core typecheck
• bun --filter @agentv/core build
• bun --filter @agentv/core test
• bun run build
• bunx biome check packages/core/src/evaluation/workspace/repo-resolver.ts packages/core/src/evaluation/workspace/repo-manager.ts packages/core/test/evaluation/workspace/repo-manager.test.ts apps/web/src/content/docs/docs/next/guides/workspace-architecture.mdx docs/adr/0017-output-artifact-and-workspace-resolver-contract.md
• git diff --check

Dogfood

Ran a temporary real CLI eval against octocat/Hello-World using a project-local repo_resolvers entry whose script emitted the new flat stdout contract. The eval materialized the repo through the resolver, cloned the returned local Git source, and a CLI target running inside the workspace verified both Hello World! and git=true.

Command:

AGENTV_HOME=/tmp/agentv-repo-resolver-dogfood.4eEQ53/agentv-home \
AGENTV_DATA_DIR=/tmp/agentv-repo-resolver-dogfood.4eEQ53/agentv-data \
bun apps/cli/src/cli.ts eval run \
  /tmp/agentv-repo-resolver-dogfood.4eEQ53/project/evals/repo-resolver-dogfood.eval.yaml \
  --target inspect_workspace \
  --output /tmp/agentv-repo-resolver-dogfood.4eEQ53/run-2

Result: 1/1 passed, score 100%, execution_status: ok. Run bundle: /tmp/agentv-repo-resolver-dogfood.4eEQ53/run-2.