- Removed redundant definition of CLI base timeout in `cli-provider.ts` and added a detailed comment explaining its purpose.
- Updated `codex-provider.ts` to use the imported `DEFAULT_TIMEOUT_MS` directly instead of an alias.
- Enhanced unit tests to ensure fallback behavior for invalid reasoning effort values in timeout calculations.
- Added `calculateReasoningTimeout` function to dynamically adjust timeouts based on reasoning effort levels.
- Updated CLI and Codex providers to utilize the new timeout calculation, addressing potential timeouts for high reasoning efforts.
- Enhanced unit tests to validate timeout behavior for various reasoning efforts, ensuring correct timeout values are applied.
CLI-based providers (OpenCode, etc.) only accept a single prompt via
stdin/args and don't support separate system/user message channels like
Claude SDK. When systemPrompt is passed to these providers, it was
silently dropped, causing:
- BacklogPlan JSON parsing failures with OpenCode/GPT-5.2 (missing
"output ONLY JSON" formatting instruction)
- Loss of critical formatting/schema instructions for structured outputs
This fix adds embedSystemPromptIntoPrompt() method to CliProvider base
class that:
- Prepends systemPrompt to the user prompt before CLI execution
- Handles both string and array prompts (vision support)
- Handles both string systemPrompt and SystemPromptPreset objects
- Uses standard \n\n---\n\n separator (consistent with codebase)
- Sets systemPrompt to undefined to prevent double-injection
Benefits OpencodeProvider immediately (uses base executeQuery).
CursorProvider still uses manual workarounds (overrides executeQuery).
Fixes the immediate BacklogPlan + OpenCode bug while maintaining
backward compatibility with existing Cursor workarounds.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
