Add quit confirmation to main menu

Implement a quit confirmation dialog that appears when the QUIT button is selected on the main menu. The dialog displays 'EXIT GAME?' with YES/NO options. YES sends a coAction quit request to the plugin, which hides the overlay, disconnects any active server session, and sets RE::Main::quitGame to exit the game. NO returns to the main menu. Includes full keyboard (arrow keys, Enter, Escape), gamepad (dpad, A/B buttons), and mouse support. Default selection is NO.

docs/dev-log.md

@@ -9,6 +9,62 @@ failed experiments, successful tests, and next steps.
 
 ---
 
+## 2026-07-07 - Main Menu Quit Confirmation
+
+### Summary
+Selecting QUIT on the custom main menu opens an `EXIT GAME?` confirmation dialog. YES quits to desktop; NO returns to the menu.
+
+### Files Changed
+- `ui/views/CommonwealthOnline/main-menu/index.html`
+- `ui/views/CommonwealthOnline/main-menu/styles.css`
+- `ui/views/CommonwealthOnline/main-menu/script.js`
+- `changelog.md`
+- `docs/dev-log.md`
+
+### Details
+- Added centered quit-confirm modal with YES/NO options and shared menu selection styling.
+- New `quitConfirm` view mode with keyboard, gamepad, and mouse support; B/Escape cancels like vanilla.
+- YES sends the `coAction` quit request to the plugin; NO cancels. Default selection is NO.
+
+### Testing
+- Not run locally (requires Fallout 4 + built plugin).
+- Expected: QUIT → `EXIT GAME?` appears; NO/B returns to menu; YES exits game.
+
+### Known Issues
+- None currently known.
+
+### Next Steps
+- None currently known.
+
+---
+
+## 2026-07-07 - Main Menu Quit Button
+
+### Summary
+The custom main menu QUIT item now sends a `coAction` to the plugin, which hides the overlay, disconnects any active server session, and sets `RE::Main::quitGame` on the game thread so Fallout 4 exits to desktop.
+
+### Files Changed
+- `ui/views/CommonwealthOnline/main-menu/script.js`
+- `plugin/src/F4TPrismaUI.cpp`
+- `changelog.md`
+- `docs/dev-log.md`
+
+### Details
+- JS `activateSelected()` routes `quit` through `sendCoAction({ action: "quit" })` instead of only logging via `onOpenView`.
+- C++ `RequestQuitFromMainMenu()` hides the PrismaUI overlay, calls `DisconnectFromLocalServer()`, and queues `main->quitGame = true` via `F4SE::GetTaskInterface()->AddTask`.
+
+### Testing
+- Not run locally (requires Fallout 4 + built plugin).
+- Expected: select QUIT on title screen → game closes to desktop; no stuck overlay; server disconnects if connected.
+
+### Known Issues
+- None currently known.
+
+### Next Steps
+- None currently known (quit confirmation added in follow-up entry).
+
+---
+
 ## 2026-07-07 - Fix: Hide Main Menu Overlay During Server Join Load
 
 ### Summary