feat(rmeets): chat popup notifications + right-side chat panel

- Enable chat notifications (brief popup for all participants)
- Move chat panel to right side via CHAT_PANEL_POSITION
- Applied to both clean room mode and folk-jitsi-room shell mode

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

modules/rmeets/components/folk-jitsi-room.ts

@@ -143,6 +143,7 @@ class FolkJitsiRoom extends HTMLElement {
 					hideConferenceSubject: false,
 					disableVirtualBackground: false,
 					disableProfile: false,
+					notifications: ['chat'],
 					toolbarButtons: [
 						"camera", "microphone", "desktop", "hangup",
 						"raisehand", "tileview", "toggle-camera",
@@ -160,6 +161,7 @@ class FolkJitsiRoom extends HTMLElement {
 					SHOW_BRAND_WATERMARK: false,
 					CLOSE_PAGE_GUEST_HINT: false,
 					SHOW_PROMOTIONAL_CLOSE_PAGE: false,
+					CHAT_PANEL_POSITION: 'right',
 					SETTINGS_SECTIONS: ['devices', 'language', 'moderator', 'profile', 'sounds', 'more'],
 				},
 			});

modules/rmeets/mod.ts

@@ -750,6 +750,7 @@ routes.get("/:room", (c) => {
         enableClosePage: false,
         disableVirtualBackground: false,
         disableProfile: false,
+        notifications: ['chat'],
         toolbarButtons: [
           "microphone","camera","desktop","hangup",
           "raisehand","tileview","toggle-camera",
@@ -768,6 +769,7 @@ routes.get("/:room", (c) => {
         MOBILE_APP_PROMO: false,
         HIDE_DEEP_LINKING_LOGO: true,
         DISABLE_JOIN_LEAVE_NOTIFICATIONS: false,
+        CHAT_PANEL_POSITION: 'right',
         SETTINGS_SECTIONS: ['devices', 'language', 'moderator', 'profile', 'sounds', 'more'],
       },
     });