docs: add task for agent prompt generation

src/rdb_discovery/cli.py

@@ -10,7 +10,7 @@ from rich.table import Table
 from .discovery import append_discovery_answer, core_questions
 from .handoff import build_handoff
 from .status import project_stage, task_counts
-from .tasks import get_next_task, update_task_status
+from .tasks import generate_agent_prompt, get_next_task, update_task_status
 from .templates import CONTEXT_FILES, write_file_if_missing
 
 app = typer.Typer(help="RDB discovery and delivery workflow CLI.")
@@ -131,3 +131,11 @@ def complete(task_id: str) -> None:
 def handoff() -> None:
     """Print an AI-agent handoff summary."""
     console.print(build_handoff(root_path()))
+
+
+@app.command()
+def prompt() -> None:
+    """Generate a ready-to-paste implementation prompt for the next Todo task."""
+    root = root_path()
+    result = generate_agent_prompt(root)
+    console.print(result)