Delegate cron prompt command building to AgentCLI implementations

[tbrandenburg]

Motivation

• Prevent duplication and drift by moving CLI-specific prompt command construction out of cron_service and into each AgentCLI implementation so the CLI class is authoritative for its invocation semantics.
• Make stdin-vs-argument prompt detection explicit per-CLI rather than relying on executable name heuristics scattered across code.

Description

• Added a new abstract method build_prompt_command(prompt: str) -> list[str] and hook prompt_via_stdin() to AgentCLI in packages/pybackend/agent_cli.py so CLIs can provide their prompt command and whether they accept prompt via stdin.
• Implemented build_prompt_command and prompt_via_stdin where appropriate in packages/pybackend/copilot_agent_cli.py, codex_agent_cli.py, kiro_agent_cli.py, opencode_database_agent_cli.py, ob1_agent_cli.py and the base OpenCodeAgentCLI.
• Simplified packages/pybackend/cron_service.py so _build_agent_cli_command delegates to get_agent_cli().build_prompt_command(prompt) and _uses_stdin_prompt() now uses get_agent_cli().prompt_via_stdin().
• Updated unit tests in packages/pybackend/tests/unit/test_cron_service.py to mock the new AgentCLI contract (build_prompt_command and prompt_via_stdin) instead of relying on cli_name/main_executable_name behavior.

Testing

• Ran CLI unit tests with python -m pytest packages/pybackend/tests/unit/test_copilot_agent_cli.py packages/pybackend/tests/unit/test_kiro_agent_cli.py packages/pybackend/tests/unit/test_codex_agent_cli.py packages/pybackend/tests/unit/test_ob1_agent_cli.py packages/pybackend/tests/unit/test_opencode_database_agent_cli.py and all contained tests passed.
• Ran cron-related unit tests with python -m pytest packages/pybackend/tests/unit/test_cron_service.py but collection failed in this environment due to a missing apscheduler dependency, preventing full execution of that file here.
• The changes are limited to command-building and tests were updated accordingly, with the non-CLI-test failures attributable to the test environment rather than the refactor itself.

---

Codex Task

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
made	Ready	Preview, Comment	Mar 30, 2026 10:25am