feat(agentic-rl): add function instance log query/delete APIs and error_code outputs

[luozirong2025]

Description

Enhancements to the Agentic RL fine-tuning module (dashscope.finetune.agentic_rl / dashscope.finetune.reinforcement).

New function (FaaS) instance APIs on AgenticRL:

• query_function_instance_logs() — query logs of a deployed function instance with pagination, time-range and keyword filters
• query_all_function_instance_logs() — aggregate all log entries across pages
• delete_function_instance() — delete a function runtime instance
• verify_deployed_function() — new pull_logs / log_page_size / start_time / end_time options to pull and print instance logs after verification
• New endpoint constants FC_QUERY_LOG_API / FC_DELETE_API (env-overridable, consistent with the existing FC_* constants)
• Failures raise InstanceQueryError with dedicated error codes (3009/3010/3011 at the API layer, 2074/2075 at the component layer)

Error-code plumbing:

• RolloutOutput / RewardOutput gain an optional error_code field so rollout/reward failures can carry machine-readable error codes

Clearer OSS upload errors:

• Oversized packages now fail fast before upload, with actual size, configured limit, and remediation hints (FC_ZIP_EXCLUDE_PATTERNS, FC_OSS_FILE_SIZE_WARNING)
• Upload failures log file name, size, HTTP status and response body; partial upload failures now include per-file details

Related Issue: N/A

Security Considerations: No API keys or sensitive credentials are exposed in code or logs. Log pulling only prints function-instance log content; API keys are passed via request headers as before.

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation
• Refactoring

Component(s) Affected

• Agentic RL fine-tuning (dashscope.finetune.agentic_rl, dashscope.finetune.reinforcement)

Checklist

• Pre-commit hooks pass
• Tests pass locally
• Documentation updated (if needed)
• Ready for review

Testing

• python3 -m pytest tests/unit/test_agentic_rl_components.py tests/unit/test_agentic_rl_model.py tests/unit/test_agentic_rl_submit_job.py tests/unit/test_agentic_rl_utils.py -q → 147 passed
• pre-commit run --files <changed files> → all hooks pass (mypy / black / flake8 / pylint)
• Manual: deploy a function instance, then await AgenticRL.query_all_function_instance_logs(function_instance_id=...) and await AgenticRL.delete_function_instance(function_instance_id=...)

Additional Notes

Branch is rebased onto the latest upstream main (9b2fb54), so it should merge cleanly.