Add NPC interaction system with memory and quest generation

- Introduced a new NPC system with dynamic NPCs and conversation handling.
- Implemented NPC memory using SQLite to log conversations and manage relationships.
- Added commands for talking to NPCs, listing available NPCs, and generating quests.
- Updated database schema to support NPC conversations and relationships.
- Refactored code structure to separate concerns into cogs and handlers.

cogs/mail.py

@@ -1,4 +1,3 @@
-import discord
 from discord.ext import commands
 import smtplib
 from email.mime.multipart import MIMEMultipart
@@ -10,7 +9,7 @@ from datetime import datetime
 
 
 class Mail(commands.Cog):
-    def __init__(self, client):
+    def __init__(self, client:commands.Bot):
         self.client = client
         load_dotenv()
         from utils.sql_commands import DatabaseManager
@@ -19,7 +18,7 @@ class Mail(commands.Cog):
 
     @commands.is_owner()
     @commands.command(name="mail_feedback")
-    async def mail(self, ctx):
+    async def mail(self, ctx:commands.Context[commands.Bot]):
         password = getenv("EMAILPASS")
         username = getenv("EMAILUSER")
         server = getenv("EMAILSERVER")
@@ -44,7 +43,7 @@ class Mail(commands.Cog):
             msg["Subject"] = "Py feedback"
 
             # Fetch feedback from the database
-            feedback_rows = self.db.fetch_all("SELECT * FROM feedback")
+            feedback_rows:list[dict[str,str]] = self.db.fetch_all("SELECT * FROM feedback")
             all_feedback = ""
             for i, row in enumerate(feedback_rows, 1):
                 content = html.escape(row["CONTENT"])
@@ -131,5 +130,5 @@ class Mail(commands.Cog):
             await ctx.reply(f"Failed to send mail: {e}", delete_after=5)
 
 
-async def setup(client):
+async def setup(client:commands.Bot):
     await client.add_cog(Mail(client))