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/css/feed.css

@@ -25,7 +25,6 @@
     font-size: 0.8125rem;
     font-weight: 600;
     color: var(--text-secondary);
-    transition: all 0.2s;
 }
 
 .feed-nav-btn:hover {
@@ -49,7 +48,6 @@
     padding: 0.375rem 0.5rem;
     border-radius: var(--radius);
     font-size: 0.875rem;
-    transition: all 0.2s;
 }
 
 .feed-nav-actions button:hover {
@@ -68,7 +66,6 @@
     border: 1px solid var(--border);
     border-radius: var(--radius-lg);
     padding: 1rem;
-    transition: all 0.2s;
 }
 
 .post-card:hover {
@@ -130,7 +127,6 @@
     margin-bottom: 0.5rem;
     color: var(--text-primary);
     line-height: 1.3;
-    transition: color 0.15s ease;
 }
 
 .post-content {
@@ -144,7 +140,6 @@
     -webkit-box-orient: vertical;
     overflow: hidden;
     cursor: pointer;
-    transition: color 0.15s ease;
 }
 
 .post-content:hover {
@@ -154,6 +149,7 @@
 .post-actions {
     display: flex;
     align-items: center;
+    flex-wrap: wrap;
     gap: 0.5rem;
     padding-top: 1rem;
     border-top: 1px solid var(--border);
@@ -169,7 +165,6 @@
     font-size: 0.8125rem;
     font-weight: 500;
     color: var(--text-muted);
-    transition: all 0.2s;
     background: none;
     border: none;
     cursor: pointer;
@@ -328,7 +323,6 @@
     align-items: center;
     justify-content: center;
     box-shadow: 0 4px 16px rgba(229, 57, 53, 0.4);
-    transition: all 0.2s;
     z-index: 100;
     border: none;
     cursor: pointer;