feat: Add bio checkbox, today period, and recent entries on track page

- Add organic/bio checkbox to tea form and display 🌱 badge
- Add 'Heute' (today) option to stats period filter
- Add recent 10 entries display on track page below form
- Update tea cards and dropdowns to show bio indicator
- Add migration for existing teas without organic field
- Style organic badge with green color and hover effect
- Update all entry displays to show bio status

Generated by Vibe Code

Co-authored-by: trevor1969 <trevor1969@users.noreply.github.com>

styles.css

@@ -378,6 +378,45 @@ header p {
     min-height: 80px;
 }
 
+/* Checkbox Styling */
+.checkbox-group {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+}
+
+.checkbox-group label {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    cursor: pointer;
+    font-weight: normal;
+    color: var(--text-color);
+}
+
+.checkbox-group input[type="checkbox"] {
+    width: 20px;
+    height: 20px;
+    cursor: pointer;
+    accent-color: var(--primary-color);
+}
+
+/* Recent tracked section */
+.recent-tracked {
+    background-color: var(--card-bg);
+    border-radius: var(--border-radius);
+    padding: 20px;
+    box-shadow: var(--box-shadow);
+    margin-top: 30px;
+}
+
+.recent-tracked h3 {
+    margin-bottom: 15px;
+    color: var(--text-color);
+    border-bottom: 2px solid var(--primary-light);
+    padding-bottom: 10px;
+}
+
 .form-actions {
     display: flex;
     gap: 15px;
@@ -763,3 +802,16 @@ header p {
     margin-right: 10px;
     border: 2px solid #ddd;
 }
+
+/* Organic Badge */
+.organic-badge {
+    display: inline-block;
+    font-size: 0.9em;
+    margin-left: 5px;
+    color: var(--success-color);
+    cursor: help;
+}
+
+.organic-badge:hover {
+    transform: scale(1.1);
+}