Clean up exception handling.

ra_aid/__main__.py

@@ -12,6 +12,7 @@ from ra_aid import print_stage_header, print_error, print_interrupt
 from ra_aid.tools.agent import CANCELLED_BY_USER_REASON
 from ra_aid.tools.human import ask_human
 from ra_aid.agent_utils import (
+    AgentInterrupt,
     run_agent_with_retry,
     run_research_agent,
     run_planning_agent
@@ -227,7 +228,7 @@ def main():
                 config=config
             )
 
-    except KeyboardInterrupt:
+    except (KeyboardInterrupt, AgentInterrupt):
         print()
         print(" 👋 Bye!")
         print()

ra_aid/agent_utils.py

@@ -10,6 +10,14 @@ import threading
 import time
 from typing import Optional
 
+class AgentInterrupt(Exception):
+    """Exception raised when an agent's execution is interrupted.
+    
+    This exception is used for internal agent interruption handling,
+    separate from KeyboardInterrupt which is reserved for top-level handling.
+    """
+    pass
+
 from langgraph.prebuilt import create_react_agent
 from ra_aid.console.formatting import print_stage_header, print_error
 from ra_aid.console.output import print_agent_output
@@ -52,6 +60,7 @@ from ra_aid.prompts import (
     HUMAN_PROMPT_SECTION_RESEARCH
 )
 
+
 console = Console()
 
 def run_research_agent(
@@ -287,7 +296,9 @@ def _request_interrupt(signum, frame):
         _INTERRUPT_CONTEXT = _CONTEXT_STACK[-1]
     
     if _FEEDBACK_MODE:
+        print()
         print(" 👋 Bye!")
+        print()
         sys.exit(0)
 
 class InterruptibleSection:
@@ -300,7 +311,7 @@ class InterruptibleSection:
 
 def check_interrupt():
     if _CONTEXT_STACK and _INTERRUPT_CONTEXT is _CONTEXT_STACK[-1]:
-        raise KeyboardInterrupt("Interrupt requested")
+        raise AgentInterrupt("Interrupt requested")
 
 def run_agent_with_retry(agent, prompt: str, config: dict) -> Optional[str]:
     original_handler = None
@@ -324,7 +335,7 @@ def run_agent_with_retry(agent, prompt: str, config: dict) -> Optional[str]:
                         check_interrupt()
                         print_agent_output(chunk)
                     return "Agent run completed successfully"
-                except KeyboardInterrupt:
+                except (KeyboardInterrupt, AgentInterrupt):
                     raise
                 except (InternalServerError, APITimeoutError, RateLimitError, APIError) as e:
                     if attempt == max_retries - 1:

ra_aid/tools/agent.py

@@ -3,6 +3,7 @@
 from langchain_core.tools import tool
 from typing import Dict, Any, Union, List
 from typing_extensions import TypeAlias
+from ..agent_utils import AgentInterrupt
 
 ResearchResult = Dict[str, Union[str, bool, Dict[int, Any], List[Any], None]]
 from rich.console import Console
@@ -61,15 +62,13 @@ def request_research(query: str) -> ResearchResult:
             hil=config.get('hil', False),
             console_message=query
         )
-    except KeyboardInterrupt:
+    except AgentInterrupt:
-        try:
         print()
         response = ask_human.invoke({"question": "Why did you interrupt me?"})
         success = False
         reason = response if response.strip() else CANCELLED_BY_USER_REASON
-        except Exception:
+    except KeyboardInterrupt:
-            success = False
+        raise
-            reason = CANCELLED_BY_USER_REASON
     except Exception as e:
         print_error(f"Error during research: {str(e)}")
         success = False
@@ -123,15 +122,13 @@ def request_research_and_implementation(query: str) -> Dict[str, Any]:
         
         success = True
         reason = None
-    except KeyboardInterrupt:
+    except AgentInterrupt:
-        try:
         print()
         response = ask_human.invoke({"question": "Why did you interrupt me?"})
         success = False
         reason = response if response.strip() else CANCELLED_BY_USER_REASON
-        except Exception:
+    except KeyboardInterrupt:
-            success = False
+        raise
-            reason = CANCELLED_BY_USER_REASON
     except Exception as e:
         console.print(f"\n[red]Error during research: {str(e)}[/red]")
         success = False
@@ -194,15 +191,13 @@ def request_task_implementation(task_spec: str) -> Dict[str, Any]:
         
         success = True
         reason = None
-    except KeyboardInterrupt:
+    except AgentInterrupt:
-        try:
         print()
         response = ask_human.invoke({"question": "Why did you interrupt me?"})
         success = False
         reason = response if response.strip() else CANCELLED_BY_USER_REASON
-        except Exception:
+    except KeyboardInterrupt:
-            success = False
+        raise
-            reason = CANCELLED_BY_USER_REASON
     except Exception as e:
         print_error(f"Error during task implementation: {str(e)}")
         success = False
@@ -255,15 +250,13 @@ def request_implementation(task_spec: str) -> Dict[str, Any]:
         
         success = True
         reason = None
-    except KeyboardInterrupt:
+    except AgentInterrupt:
-        try:
         print()
         response = ask_human.invoke({"question": "Why did you interrupt me?"})
         success = False
         reason = response if response.strip() else CANCELLED_BY_USER_REASON
-        except Exception:
+    except KeyboardInterrupt:
-            success = False
+        raise
-            reason = CANCELLED_BY_USER_REASON
     except Exception as e:
         print_error(f"Error during planning: {str(e)}")
         success = False