Retry scheduler GraphQL stream cancels

[seonghobae]

Summary

• classify GitHub HTTP/2 stream cancel messages as transient API errors
• keep GraphQL retry behavior from failing the scheduler on peer-side stream cancellation
• add regression coverage for the observed stream ID 1; CANCEL; received from peer failure

Verification

• uv run --python 3.13 pytest -s tests/test_pr_review_merge_scheduler.py -q
• patched bandscope scheduler dry-run completed after retrying the observed stream cancel

[github-actions]

Pull request overview

OpenCode cannot approve yet because required coverage evidence did not pass.

Review outcome

1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence

• Problem: The required coverage-evidence job result was cancelled, so OpenCode cannot establish approval sufficiency for this head.

• Root cause: Automated approval is only valid when the same-head coverage-evidence job proves supported repository test suites passed and configured docstring gates passed or were advisory, or reports not applicable because no supported source files or package manifests exist. Missing, failed, skipped, unavailable, or unsupported-tooling test evidence is a blocker.

• Fix: Install or configure the repository test/docstring evidence tooling when source files or package manifests exist, rerun the current-head coverage-evidence job, and approve only after it reports success with required evidence or explicit no-source not-applicable evidence.

• Regression test: Keep the approval branch checking needs.coverage-evidence.result == success before posting APPROVE, and publish REQUEST_CHANGES when coverage-evidence blocker states such as cancelled, skipped, failed, unsupported-tooling, or below-100 evidence are present.

• Result: REQUEST_CHANGES

• Reason: coverage-evidence result was cancelled, so required test/docstring evidence was not proven for current head 69cbe3a7dec796e1711d3d13dc61169c6e3326c7.

• Head SHA: 69cbe3a7dec796e1711d3d13dc61169c6e3326c7

• Workflow run: 28844673625

• Workflow attempt: 1

Coverage evidence

Coverage evidence job did not run or did not publish coverage evidence.

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["CI script: pr_review_merge_scheduler.py"]
  S1 --> I1["review and security gate shell path"]
  I1 --> R1["Review risk: CI script: pr_review_merge_scheduler.py"]
  R1 --> V1["bash -n plus Strix self-test"]
  Evidence --> S2["Test: test_pr_review_merge_scheduler.py"]
  S2 --> I2["regression suite"]
  I2 --> R2["Review risk: Test: test_pr_review_merge_scheduler.py"]
  R2 --> V2["targeted test run"]

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[github-actions]

OpenCode Review Overview

• Head SHA: 69cbe3a7dec796e1711d3d13dc61169c6e3326c7
• Workflow run: 28844673625
• Workflow attempt: 1
• Gate result: REQUEST_CHANGES (approval step)

Pull request overview

OpenCode cannot approve yet because required coverage evidence did not pass.

Review outcome

1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence

• Problem: The required coverage-evidence job result was cancelled, so OpenCode cannot establish approval sufficiency for this head.

• Root cause: Automated approval is only valid when the same-head coverage-evidence job proves supported repository test suites passed and configured docstring gates passed or were advisory, or reports not applicable because no supported source files or package manifests exist. Missing, failed, skipped, unavailable, or unsupported-tooling test evidence is a blocker.

• Fix: Install or configure the repository test/docstring evidence tooling when source files or package manifests exist, rerun the current-head coverage-evidence job, and approve only after it reports success with required evidence or explicit no-source not-applicable evidence.

• Regression test: Keep the approval branch checking needs.coverage-evidence.result == success before posting APPROVE, and publish REQUEST_CHANGES when coverage-evidence blocker states such as cancelled, skipped, failed, unsupported-tooling, or below-100 evidence are present.

• Result: REQUEST_CHANGES

• Reason: coverage-evidence result was cancelled, so required test/docstring evidence was not proven for current head 69cbe3a7dec796e1711d3d13dc61169c6e3326c7.

• Head SHA: 69cbe3a7dec796e1711d3d13dc61169c6e3326c7

• Workflow run: 28844673625

• Workflow attempt: 1

Coverage evidence

Coverage evidence job did not run or did not publish coverage evidence.

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["CI script: pr_review_merge_scheduler.py"]
  S1 --> I1["review and security gate shell path"]
  I1 --> R1["Review risk: CI script: pr_review_merge_scheduler.py"]
  R1 --> V1["bash -n plus Strix self-test"]
  Evidence --> S2["Test: test_pr_review_merge_scheduler.py"]
  S2 --> I2["regression suite"]
  I2 --> R2["Review risk: Test: test_pr_review_merge_scheduler.py"]
  R2 --> V2["targeted test run"]

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