UI: Allow editing of title (#246)

- make <h1> title contentEditable
- title setting persists across reloads in localStorage

ui/src/App.tsx

@@ -1,3 +1,4 @@
+import { useEffect, useCallback } from "react";
 import { BrowserRouter as Router, Routes, Route, Navigate, NavLink } from "react-router-dom";
 import { useTheme } from "./contexts/ThemeProvider";
 import { APIProvider } from "./contexts/APIProvider";
@@ -6,9 +7,23 @@ import ModelPage from "./pages/Models";
 import ActivityPage from "./pages/Activity";
 import ConnectionStatus from "./components/ConnectionStatus";
 import { RiSunFill, RiMoonFill } from "react-icons/ri";
+import { usePersistentState } from "./hooks/usePersistentState";
 
 function App() {
   const { isNarrow, toggleTheme, isDarkMode } = useTheme();
+  const [appTitle, setAppTitle] = usePersistentState("app-title", "llama-swap");
+
+  const handleTitleChange = useCallback(
+    (newTitle: string) => {
+      setAppTitle(newTitle);
+      document.title = newTitle;
+    },
+    [setAppTitle]
+  );
+
+  useEffect(() => {
+    document.title = appTitle; // Set initial title
+  }, [appTitle]);
 
   return (
     <Router basename="/ui/">
@@ -16,7 +31,28 @@ function App() {
         <div className="flex flex-col h-screen">
           <nav className="bg-surface border-b border-border p-2 h-[75px]">
             <div className="flex items-center justify-between mx-auto px-4 h-full">
-              {!isNarrow && <h1 className="flex items-center p-0">llama-swap</h1>}
+              {!isNarrow && (
+                <h1
+                  contentEditable
+                  suppressContentEditableWarning
+                  className="flex items-center p-0 outline-none hover:bg-gray-100 dark:hover:bg-gray-700 rounded px-1"
+                  onBlur={(e) =>
+                    handleTitleChange(e.currentTarget.textContent?.replace(/\n/g, "").trim() || "llama-swap")
+                  }
+                  onKeyDown={(e) => {
+                    if (e.key === "Enter") {
+                      e.preventDefault();
+                      const sanitizedText =
+                        e.currentTarget.textContent?.replace(/\n/g, "").trim().substring(0, 25) || "llama-swap";
+                      handleTitleChange(sanitizedText);
+                      e.currentTarget.textContent = sanitizedText;
+                      e.currentTarget.blur();
+                    }
+                  }}
+                >
+                  {appTitle}
+                </h1>
+              )}
               <div className="flex items-center space-x-4">
                 <NavLink to="/" className={({ isActive }) => (isActive ? "navlink active" : "navlink")}>
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