fix: Add debounced Undo/Redo system to avoid character-by-character history

- Add debounced state updates for title and content (500ms delay)
- Immediate UI updates with delayed history saving
- Prevent one-letter-per-undo issue
- Add cleanup for debounce timers on unmount

mcp-server/node_modules/prisma/build/public/assets/play.8811691e.svg

@@ -0,0 +1,6 @@
+<svg
+  viewBox="0 0 24 24"
+  xmlns="http://www.w3.org/2000/svg"
+>
+  <path d="m2.314892,2.715466c0,-2.097726 2.320696,-3.364698 4.085258,-2.230334l13.864359,8.912782c1.89413,1.21769 1.89413,3.986482 0,5.204172l-13.864359,8.912782c-1.764597,1.134364 -4.085258,-0.132608 -4.085258,-2.230334l0,-18.569068z"/>
+</svg>