Implement tag management with SQLite; update save and retrieve endpoints

public/index.html

@@ -56,7 +56,7 @@
                 <label for="time">Tid (valfritt)</label>
             </div>
             <div class="input-field">
-                <input type="text" id="tags" placeholder="Taggar">
+                <input type="text" id="tags" placeholder="Taggar" autocomplete="off">
                 <label for="tags">Taggar</label>
             </div>
             <button class="btn waves-effect waves-light" type="submit">Spara uppgift</button>

public/js/tags.js

@@ -1,10 +1,13 @@
-export function saveTags(tags) {
+export async function saveTags(newTags) {
+    const existingTags = await loadTags();
+    const allTags = Array.from(new Set([...existingTags, ...newTags]));
+
     return fetch('/save-tags', {
         method: 'POST',
         headers: {
             'Content-Type': 'application/json',
         },
-        body: JSON.stringify({ tags })
+        body: JSON.stringify({ tags: allTags })
     });
 }