feat: Add API endpoint for managing categories

app/main.py

@@ -2,6 +2,7 @@ from contextlib import asynccontextmanager
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from app.api.v1.jobs import router as jobs_router
+from app.api.v1.categories import router as categories_router
 from app.core.config import settings
 from app.db.base import Base
 from app.db.session import engine
@@ -12,6 +13,28 @@ async def lifespan(app: FastAPI):
     # Startup: Create tables if they don't exist
     async with engine.begin() as conn:
         await conn.run_sync(Base.metadata.create_all)
+
+    # Seed default categories if empty
+    from app.db.session import AsyncSessionLocal
+    from app.db.models.category import Category
+    from sqlalchemy import select
+
+    async with AsyncSessionLocal() as session:
+        result = await session.execute(select(Category))
+        if not result.scalars().first():
+            defaults = [
+                Category(name="Food"),
+                Category(name="Shopping"),
+                Category(name="Travel"),
+                Category(name="Transport"),
+                Category(name="Utilities"),
+                Category(name="Cash Withdrawal"),
+                Category(name="Entertainment"),
+                Category(name="Other"),
+            ]
+            session.add_all(defaults)
+            await session.commit()
+
     yield
     # Shutdown: Clean up pool
     await engine.dispose()
@@ -32,8 +55,9 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
-# Include API Router
+# Include API Routers
 app.include_router(jobs_router, prefix=settings.API_V1_STR)
+app.include_router(categories_router, prefix=settings.API_V1_STR)
 
 
 # Root healthcheck endpoint