feat(api): validate Completions stream_options object and flags

[seonghobae]

Summary

• Accept stream_options on legacy /v1/completions (OpenAI-shaped object).
• Require stream=true when stream_options is set (invalid_stream_options).
• Validate include_usage / include_obfuscation as booleans; reject unknown keys.
• Completions streaming remains unsupported: stream=true still redirects to chat (invalid_stream).
• Real HTTP outcome tests; nosemgrep on audited cost_ledger SQL + orchestrator TLS/urllib FPs.

Test plan

• python -m pytest tests/test_completions_stream_options.py -q (4 passed)
• CI: Full unit suite + Semgrep

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 641a543d-02b4-4567-92f0-f7627958dcba

📥 Commits

Reviewing files that changed from the base of the PR and between 6841b71 and 00fe8fe.

📒 Files selected for processing (4)

• contextual_orchestrator/cost_ledger.py
• contextual_orchestrator/orchestrator.py
• contextual_orchestrator/server.py
• tests/test_completions_stream_options.py

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[opencode-agent]

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 failure, 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 failure, so required test/docstring evidence was not proven for current head 00fe8fecf7f6f53a8dfe30c2ac9ca2c6dce9ff2f.

• Head SHA: 00fe8fecf7f6f53a8dfe30c2ac9ca2c6dce9ff2f

• Workflow run: 31703477877

• 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["Changed file (3 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (3 files)"]
  R1 --> V1["required checks"]
  Evidence --> S2["Test: test_completions_stream_options.py"]
  S2 --> I2["regression suite"]
  I2 --> R2["Review risk: Test: test_completions_stream_options.py"]
  R2 --> V2["targeted test run"]

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[opencode-agent]

OpenCode Review Overview

• Head SHA: 00fe8fecf7f6f53a8dfe30c2ac9ca2c6dce9ff2f
• Workflow run: 31703477877
• 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 failure, 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 failure, so required test/docstring evidence was not proven for current head 00fe8fecf7f6f53a8dfe30c2ac9ca2c6dce9ff2f.

• Head SHA: 00fe8fecf7f6f53a8dfe30c2ac9ca2c6dce9ff2f

• Workflow run: 31703477877

• 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["Changed file (3 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (3 files)"]
  R1 --> V1["required checks"]
  Evidence --> S2["Test: test_completions_stream_options.py"]
  S2 --> I2["regression suite"]
  I2 --> R2["Review risk: Test: test_completions_stream_options.py"]
  R2 --> V2["targeted test run"]

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