feat: add comprehensive agent system with memory, planning, and tool use

This commit introduces a full-featured agent architecture including persistent memory storage using vector embeddings, multi-step planning capabilities with dynamic replanning, and an extensible tool registry supporting custom function definitions. The agent now maintains conversation history with summarization, supports parallel tool execution, and includes a feedback loop for self-correction on failed actions.

nginx/nginx.conf.template

@@ -2,13 +2,18 @@ upstream app {
     server app:10500;
 }
 
+map $http_upgrade $connection_upgrade {
+    default upgrade;
+    ''      close;
+}
+
 proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=app_cache:10m max_size=${NGINX_CACHE_MAX_SIZE} inactive=60m use_temp_path=off;
 
 server {
     listen 80;
     server_name _;
 
-    client_max_body_size 20M;
+    client_max_body_size ${NGINX_MAX_BODY_SIZE};
 
     add_header X-Content-Type-Options nosniff;
     add_header X-Frame-Options DENY;
@@ -21,6 +26,15 @@ server {
     gzip_vary on;
     gzip_proxied any;
 
+    location /static/uploads/ {
+        alias /app/static/uploads/;
+        add_header X-Content-Type-Options nosniff;
+        add_header Content-Disposition attachment;
+        add_header Cache-Control "public, max-age=604800";
+        access_log off;
+        log_not_found off;
+    }
+
     location /static/ {
         alias /app/static/;
         expires 7d;
@@ -29,6 +43,19 @@ server {
         log_not_found off;
     }
 
+    location /devii/ws {
+        proxy_pass http://app;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection $connection_upgrade;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_read_timeout 3600s;
+        proxy_send_timeout 3600s;
+    }
+
     location /avatar/ {
         proxy_pass http://app;
         proxy_set_header Host $host;