feat: add reactions, bookmarks, polls modules with session remember config

Add three new feature modules (reactions, bookmarks, polls) with corresponding database tables, indexes, and router registrations. Introduce `SESSION_MAX_AGE_REMEMBER` config for extended session duration, add `get_unread_messages` template global, and include operational defaults for rate limiting and session settings in `site_settings`.

devplacepy/static/js/Application.js

@@ -10,6 +10,10 @@ import { ContentEnhancer } from "./ContentEnhancer.js";
 import { DomUtils } from "./DomUtils.js";
 import { PushManager } from "./PushManager.js";
 import { PwaInstaller } from "./PwaInstaller.js";
+import { CounterManager } from "./CounterManager.js";
+import { ReactionBar } from "./ReactionBar.js";
+import { BookmarkManager } from "./BookmarkManager.js";
+import { PollManager } from "./PollManager.js";
 
 class Application {
     constructor() {
@@ -25,6 +29,10 @@ class Application {
         this.dom = new DomUtils();
         this.push = new PushManager();
         this.pwa = new PwaInstaller();
+        this.counters = new CounterManager();
+        this.reactions = new ReactionBar();
+        this.bookmarks = new BookmarkManager();
+        this.polls = new PollManager();
     }
 }