feat: add runtime discovery and execution traces

cross_eval/pipeline.py

@@ -13,6 +13,7 @@ from pathlib import Path
 from cross_eval.agent import AgentInvocationError, invoke_agent, invoke_agent_agentic
 from cross_eval.worktree import WorktreeError
 from cross_eval.config import try_reload_config
+from cross_eval.discovery import discover_repo, format_repo_discovery
 from cross_eval.models import (
     AgentConfig,
     AgentResult,
@@ -804,6 +805,7 @@ def _execute_step(
 
     # 8. Save to disk
     _save_step_output(run_dir, output_iter, step.name, result.output)
+    _maybe_save_step_transcript(run_dir, output_iter, step.name, result)
 
 
 def _execute_parallel_batch(
@@ -929,6 +931,7 @@ def _execute_parallel_batch(
             step.name, r.duration_seconds, len(r.output),
         )
         _save_step_output(run_dir, output_iter, step.name, r.output)
+        _maybe_save_step_transcript(run_dir, output_iter, step.name, r)
 
     if errors:
         spinner.stop(f"[parallel] FAILED ({batch_elapsed}s)")
@@ -1001,10 +1004,12 @@ def _build_runtime_inputs(
 ) -> dict[str, str]:
     """Load runtime env and expose safe execution hints to prompts."""
     env, loaded_files, loaded_values = build_runtime_environment(config.execution, cwd)
+    discovery = discover_repo(cwd, set(loaded_values) | set(env))
     input_contents["execution_policy"] = build_execution_policy(config.execution)
     input_contents["environment_context"] = summarize_environment(
         config.execution, loaded_files, env, loaded_values,
     )
+    input_contents["repo_discovery"] = format_repo_discovery(discovery)
     return env
 
 
@@ -1018,6 +1023,8 @@ def _augment_prompt_with_runtime_context(
         extras.append("## Execution Policy\n" + context["execution_policy"])
     if context.get("environment_context"):
         extras.append("## Environment Context\n" + context["environment_context"])
+    if context.get("repo_discovery"):
+        extras.append("## Repository Discovery\n" + context["repo_discovery"])
     if not extras:
         return prompt
     return prompt.rstrip() + "\n\n" + "\n\n".join(extras) + "\n"
@@ -1198,6 +1205,20 @@ def _save_step_output(
     return path
 
 
+def _maybe_save_step_transcript(
+    run_dir: Path,
+    iteration: int,
+    step_name: str,
+    result: AgentResult,
+) -> Path | None:
+    """Persist raw stdout/stderr transcript when available."""
+    if not result.transcript:
+        return None
+    return _save_step_output(
+        run_dir, iteration, f"{step_name}_transcript", result.transcript,
+    )
+
+
 def _format_runtime_error_markdown(
     exc: Exception,
     *,