Add logo and rename

docs/ARCHITECTURE_OVERVIEW.md

@@ -2,7 +2,7 @@
 
 ## Hybrid Architecture
 
-Project Notes uses a **hybrid architecture** that combines the best of multiple paradigms:
+PersoNotes uses a **hybrid architecture** that combines the best of multiple paradigms:
 
 ### Core Components
 
@@ -240,7 +240,7 @@ Internet → Reverse Proxy (nginx/Caddy)
               ↓
           Basic Auth / OAuth
               ↓
-          Project Notes (Go)
+          PersoNotes (Go)
               ↓
           Filesystem (notes/)
 ```
@@ -248,7 +248,7 @@ Internet → Reverse Proxy (nginx/Caddy)
 Example nginx config:
 ```nginx
 location / {
-    auth_basic "Project Notes";
+    auth_basic "PersoNotes";
     auth_basic_user_file /etc/nginx/.htpasswd;
     proxy_pass http://localhost:8080;
 }