Add knowledge base RAG module for book Q&A

- Create knowledge.py handler with dynamic book selection
- Support list/select/query actions for multiple books
- Implement vector search with cosine similarity
- Add knowledge detection to AI parser config
- Cache embeddings per-book for performance

bot/bot.py

@@ -20,8 +20,9 @@ import pickle
 
 from bot.command_registry import get_handler, list_registered
 import ai.parser as ai_parser
-import bot.commands.routines    # noqa: F401 - registers handler
+import bot.commands.routines  # noqa: F401 - registers handler
 import bot.commands.medications  # noqa: F401 - registers handler
+import bot.commands.knowledge  # noqa: F401 - registers handler
 
 DISCORD_BOT_TOKEN = os.getenv("DISCORD_BOT_TOKEN")
 API_URL = os.getenv("API_URL", "http://app:5000")
@@ -217,7 +218,7 @@ async def checkActiveSession(session):
     token = session.get("token")
     if not token:
         return None
-    
+
     resp, status = apiRequest("get", "/api/sessions/active", token)
     if status == 200 and "session" in resp:
         return resp
@@ -228,45 +229,45 @@ async def handleConfirmation(message, session):
     """Handle yes/no confirmation responses. Returns True if handled."""
     discord_id = message.author.id
     user_input = message.content.lower().strip()
-    
+
     if "pending_confirmations" not in session:
         return False
-    
+
     # Check for any pending confirmations
     pending = session["pending_confirmations"]
     if not pending:
         return False
-    
+
     # Get the most recent pending confirmation
     confirmation_id = list(pending.keys())[-1]
     confirmation_data = pending[confirmation_id]
-    
+
     if user_input in ("yes", "y", "yeah", "sure", "ok", "confirm"):
         # Execute the confirmed action
         del pending[confirmation_id]
-        
+
         interaction_type = confirmation_data.get("interaction_type")
         handler = get_handler(interaction_type)
-        
+
         if handler:
             # Create a fake parsed object for the handler
             fake_parsed = confirmation_data.copy()
             fake_parsed["needs_confirmation"] = False
             await handler(message, session, fake_parsed)
         return True
-        
+
     elif user_input in ("no", "n", "nah", "cancel", "abort"):
         del pending[confirmation_id]
         await message.channel.send("❌ Cancelled.")
         return True
-    
+
     return False
 
 
 async def handleActiveSessionShortcuts(message, session, active_session):
     """Handle shortcuts like 'done', 'skip', 'next' when in active session."""
     user_input = message.content.lower().strip()
-    
+
     # Map common shortcuts to actions
     shortcuts = {
         "done": ("routine", "complete"),
@@ -283,7 +284,7 @@ async def handleActiveSessionShortcuts(message, session, active_session):
         "quit": ("routine", "cancel"),
         "abort": ("routine", "abort"),
     }
-    
+
     if user_input in shortcuts:
         interaction_type, action = shortcuts[user_input]
         handler = get_handler(interaction_type)
@@ -291,7 +292,7 @@ async def handleActiveSessionShortcuts(message, session, active_session):
             fake_parsed = {"action": action}
             await handler(message, session, fake_parsed)
             return True
-    
+
     return False
 
 
@@ -306,21 +307,23 @@ async def routeCommand(message):
 
     # Check for active session first
     active_session = await checkActiveSession(session)
-    
+
     # Handle confirmation responses
     confirmation_handled = await handleConfirmation(message, session)
     if confirmation_handled:
         return
-    
+
     # Handle shortcuts when in active session
     if active_session:
-        shortcut_handled = await handleActiveSessionShortcuts(message, session, active_session)
+        shortcut_handled = await handleActiveSessionShortcuts(
+            message, session, active_session
+        )
         if shortcut_handled:
             return
 
     async with message.channel.typing():
         history = message_history.get(discord_id, [])
-        
+
         # Add context about active session to help AI understand
         context = ""
         if active_session:
@@ -329,8 +332,10 @@ async def routeCommand(message):
             current_step = session_data.get("current_step_index", 0) + 1
             total_steps = active_session.get("total_steps", 0)
             context = f"\n[Context: User is currently in active session for '{routine_name}', on step {current_step} of {total_steps}. They can say 'done', 'skip', 'pause', 'resume', or 'stop'.]"
-        
-        parsed = ai_parser.parse(message.content + context, "command_parser", history=history)
+
+        parsed = ai_parser.parse(
+            message.content + context, "command_parser", history=history
+        )
 
         if discord_id not in message_history:
             message_history[discord_id] = []