update proxy and db path

Author: yilinxia

backend/app/services/topic_service.py

@@ -13,13 +13,14 @@ class TopicService:
     }
 
     def __init__(self):
-        db_path = '/home/user/projects/deepgit/public/data/github_meta.duckdb'
+        db_path = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(__file__)))), 'public', 'data', 'github_meta.duckdb')
 
         # Check if database exists
         if os.path.exists(db_path):
             # Connect in read-only mode to avoid locking issues
             self.con = duckdb.connect(database=db_path, read_only=True)
-            self.con.execute("SET threads TO 8;")
+            self.con.execute("SET threads TO 2;")
+            self.con.execute("SET memory_limit TO '0.5GB';")
         else:
             raise FileNotFoundError(
                 f"Database not found at {db_path}. Please ensure the database file exists before running the application."

src/components/TopicRefiner.tsx

@@ -11,6 +11,7 @@ import {
     ThumbsUp,
     Settings
 } from "lucide-react";
+import { API_ENDPOINTS } from '../lib/config';
 
 interface AIModel {
     id: string;
@@ -84,7 +85,7 @@ export const TopicRefiner: FC<TopicRefinerProps> = ({
         }
 
         try {
-            const response = await fetch('/api/ai-process', {
+            const response = await fetch(API_ENDPOINTS.AI_PROCESS, {
                 method: 'POST',
                 headers: {
                     'Content-Type': 'application/json',

src/lib/config.ts

@@ -0,0 +1,8 @@
+// Backend API configuration
+export const API_BASE_URL = 'http://127.0.0.1:5002';
+
+// API endpoints
+export const API_ENDPOINTS = {
+    PROCESS_TOPICS: `${API_BASE_URL}/api/process-topics`,
+    AI_PROCESS: `${API_BASE_URL}/api/ai-process`,
+} as const; 

src/views/TopicHistogram.tsx

@@ -7,6 +7,7 @@ import * as d3 from "d3";  // Make sure to install @types/d3 and d3
 // import { getErrorMessage } from "../lib/errors";
 import { useNotifications } from "../lib/notifications";
 import { TopicRefiner } from "../components/TopicRefiner";
+import { API_ENDPOINTS } from '../lib/config';
 
 // Topic Histogram Component
 interface TopicHistogramProps {
@@ -173,7 +174,7 @@ const TopicHistogram: FC = () => {
 
         setIsLoading(true);
 
-        fetch('/api/process-topics', {
+        fetch(API_ENDPOINTS.PROCESS_TOPICS, {
             method: 'POST',
             headers: {
                 'Content-Type': 'application/json',