fix: unwrap app.call envelopes, clean up opencode diagnostics, and align test contracts

[andrewwhitecdw]

Summary

Fixes several runtime bugs where AgentField execution envelopes were not unwrapped before being used, cleans up noisy diagnostic logging in the OpenCode provider, and brings stale tests back in line with the current implementation.

Changes

• Runtime envelope unwrapping
  • swe_af/fast/verifier.py: unwrap app.call() result before building FastVerificationResult.
  • swe_af/execution/dag_executor.py: unwrap replanner call_fn() result before constructing ReplanDecision.
  • swe_af/app.py: unwrap issue-writer results, external execute_fn_target returns, and resume_build output.
• Fast planner robustness
  • swe_af/fast/planner.py: catch Exception (AgentField raises AgentFieldClientError) in _note() so detached-router runs don't crash.
• OpenCode provider cleanup
  • swe_af/agent_ai/providers/opencode/client.py: move logger below imports, add empty-file guard, and downgrade routine diagnostics from warning to debug.
• Config / dependencies
  • Re-comment placeholder ZHIPU_API_KEY in .env.example.
  • Keep ZHIPU_API_KEY env wiring in docker-compose.yml and revert control-plane port to default 8080.
  • Align requirements.txt agentfield pin with requirements-docker.txt (>=0.1.41).
  • Add pytest-asyncio to pyproject.toml dev dependencies.
• Stale test updates
  • Update verifier forwarding tests to match the current fast_verify contract.
  • Fix node_id and docker-compose tests to use repo-relative paths and the correct default.
  • Allow intentional cross-cutting file changes in AC-14.

Verification

Tested with Python 3.12 and agentfield>=0.1.41:

408 passed, 1 skipped, 1 warning

Note: the workspace's existing .venv uses Python 3.14, which agentfield 0.1.41 does not yet support. Use Python 3.12/3.13 for CI/local dev.

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[andrewwhitecdw]

Gah I didnt catch the conflicts, working on it.

[andrewwhitecdw]

Closing this PR. The contributor is unable to sign the CLA, so these changes will remain in a private fork instead.