diff --git a/.gitattributes b/.gitattributes
deleted file mode 100644
index d72fd52..0000000
--- a/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-*.pdf binary
diff --git a/.gitignore b/.gitignore
index 39f24dc..c3d724b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,3 +28,5 @@ coverage/
 .DS_Store
 .idea/
 .vscode/
+
+*.txt
diff --git a/backend/src/kbqa/agents/tools.py b/backend/src/kbqa/agents/tools.py
index f51a6b5..37768cc 100644
--- a/backend/src/kbqa/agents/tools.py
+++ b/backend/src/kbqa/agents/tools.py
@@ -76,7 +76,7 @@ def create_research_tool(research_agent):
                 request_id=runtime.context.request_id,
             ),
             config={
-                "recursion_limit": 12,
+                "recursion_limit": 24,
                 "tags": ["research-agent"],
                 "metadata": {"request_id": runtime.context.request_id},
             },
diff --git a/backend/src/kbqa/chat/service.py b/backend/src/kbqa/chat/service.py
index ff4e7a0..9fdbbbe 100644
--- a/backend/src/kbqa/chat/service.py
+++ b/backend/src/kbqa/chat/service.py
@@ -92,7 +92,7 @@ class ChatService:
                     assistant_message_id=assistant_id,
                 ),
                 config={
-                    "recursion_limit": 12,
+                    "recursion_limit": 24,
                     "tags": ["main-agent"],
                     "metadata": {
                         "request_id": request_id,
diff --git a/web/vite.config.ts b/web/vite.config.ts
index 7582894..ca3f798 100644
--- a/web/vite.config.ts
+++ b/web/vite.config.ts
@@ -7,8 +7,8 @@ export default defineConfig({
   plugins: [react(), tailwindcss()],
   server: {
     proxy: {
-      '/api': 'http://127.0.0.1:8000',
-      '/health': 'http://127.0.0.1:8000',
+      '/api': 'http://127.0.0.1:8003',
+      '/health': 'http://127.0.0.1:8003',
     },
   },
 })