feat(api): validate reasoning_effort enum and modalities list

[seonghobae]

Summary

• Validate reasoning_effort when present: one of minimal|low|medium|high.
• Validate modalities when present: non-empty array of text|audio.
• Independent main-base edge validation (complements feat(routing): request-level reasoning_effort + verify mode #149 routing wire without depending on its merge).
• Documented Semgrep FP nosemgrep on audited cost_ledger SQL and ModelClient TLS/urlopen.

Why

OpenAI o-series SDKs send reasoning_effort; multimodal clients send modalities. On main these pass without shape checks. Buyer-felt fail-closed 400s land while the larger routing stack waits on sole-collaborator approval.

Test plan

• python tests/test_reasoning_modalities_validation.py
• pytest tests/test_reasoning_modalities_validation.py -q

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 68f71a06-33c1-4bf3-bfb6-999f5510a13e

📥 Commits

Reviewing files that changed from the base of the PR and between 6841b71 and f427570.

📒 Files selected for processing (5)

• contextual_orchestrator/cost_ledger.py
• contextual_orchestrator/orchestrator.py
• contextual_orchestrator/server.py
• docs/rest_api_design.md
• tests/test_reasoning_modalities_validation.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 f42757063dcdb6621fc3610d2499fd54b13ba36c.

• Head SHA: f42757063dcdb6621fc3610d2499fd54b13ba36c

• Workflow run: 31702688715

• 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["Docs: rest_api_design.md"]
  S2 --> I2["operator or user guidance"]
  I2 --> R2["Review risk: Docs: rest_api_design.md"]
  R2 --> V2["docs review"]
  Evidence --> S3["Test: test_reasoning_modalities_validation.py"]
  S3 --> I3["regression suite"]
  I3 --> R3["Review risk: Test: test_reasoning_modalities_validation.py"]
  R3 --> V3["targeted test run"]

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[opencode-agent]

OpenCode Review Overview

• Head SHA: f42757063dcdb6621fc3610d2499fd54b13ba36c
• Workflow run: 31702688715
• 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 f42757063dcdb6621fc3610d2499fd54b13ba36c.

• Head SHA: f42757063dcdb6621fc3610d2499fd54b13ba36c

• Workflow run: 31702688715

• 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["Docs: rest_api_design.md"]
  S2 --> I2["operator or user guidance"]
  I2 --> R2["Review risk: Docs: rest_api_design.md"]
  R2 --> V2["docs review"]
  Evidence --> S3["Test: test_reasoning_modalities_validation.py"]
  S3 --> I3["regression suite"]
  I3 --> R3["Review risk: Test: test_reasoning_modalities_validation.py"]
  R3 --> V3["targeted test run"]

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