0.1.8 RC1: Run the fixed DeepSeek V4 Flash 0731 Responses regression batch #397

Parent

#257 (part of #248)

Outcome

Run the fixed exact-candidate Ollama Cloud deepseek-v4-flash:0731 Responses regression batch for RC1.

Acceptance criteria

• The frozen Beta7 candidate and exact versioned CLI-only profile are used without product-code changes.
• The complete Beta2–Beta4 Responses surface, including Collaboration V2, runs against the exact maintained route.
• Outcomes are immutable and distinguish pass, failure, degraded behavior, and transient availability.
• Exact route/model/protocol identity, evidence hashes, cleanup state, and bounded diagnostics are recorded.
• No model fallback, cross-Provider execution, selective rerun replacement, or model-specific production branch appears.

Blocked by

• 0.1.8 Beta7 gate: Publish the stability and release-evidence candidate #319