feat: add copy (Ctrl+C) and exit (Ctrl+D) shortcuts

changelog.md

@@ -17,6 +17,8 @@ All notable changes to this project will be documented in this file.
 - **Multi-select delete**: Double-click to enter selection mode, click to toggle selection, batch delete support
 - **Title truncation**: Long titles in the list display with ellipsis
 - **Time display**: Format "time · month/day/year", e.g., "12:45 · 4/11/2026"
+- **Copy to clipboard**: Press Ctrl+C to copy current note (title + content)
+- **Exit**: Press Ctrl+D to exit (replaces default Ctrl+C)
 
 ### Technical
 
@@ -33,4 +35,10 @@ All notable changes to this project will be documented in this file.
 ```bash
 npm run dev    # Development mode
 npm run build  # Build to mio.exe
-```
+```
+
+### Keyboard Shortcuts
+
+- `Ctrl+C` - Copy current note to clipboard
+- `Ctrl+D` - Exit application
+- `Esc` - Exit application (alternative)

src/index.tsx

@@ -77,10 +77,20 @@ function App() {
 
   const selectedNote = selectedId ? notes.find((n) => n.id === selectedId) : null;
 
+  const handleCopy = () => {
+    if (selectedNote) {
+      const text = `${selectedNote.title}\n\n${selectedNote.content}`;
+      process.stdout.write('\x1b]52;c;' + btoa(text) + '\x07');
+    }
+  };
+
   useKeyboard((key) => {
-    if (key.name === "escape") {
+    if (key.ctrl && key.name === "d") {
       process.exit(0);
     }
+    if (key.ctrl && key.name === "c") {
+      handleCopy();
+    }
   });
 
   return (