Ready-made color tag presets for HTTP/HTTPS access logs

A '+ Preset…' menu in Settings > Filters adds groups of tags for status
codes, methods, probes, bots and TLS/proxy errors (nginx, Apache, Traefik,
Caddy, HAProxy). A regex group named hl colors only that part of a match,
and tags get an optional label shown in place of the pattern.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

web/index.html

@@ -188,7 +188,17 @@
               <p class="muted small" data-i18n="tagsHelp"></p>
               <div id="tagList" class="tag-list"></div>
               <footer>
-                <button id="addTag" class="btn primary" type="button" data-i18n="addTag">+ Add tag</button>
+                <span class="tag-add">
+                  <button id="addTag" class="btn primary" type="button" data-i18n="addTag">+ Add tag</button>
+                  <select id="presetTags" class="field" aria-label="Presets" data-i18n-aria="presetAria">
+                    <option value="" data-i18n="presetPick">+ Preset…</option>
+                    <option value="http_status" data-i18n="preset_http_status">HTTP status codes</option>
+                    <option value="http_methods" data-i18n="preset_http_methods">HTTP methods</option>
+                    <option value="http_probes" data-i18n="preset_http_probes">Probes and attacks</option>
+                    <option value="http_bots" data-i18n="preset_http_bots">Bots and scripts</option>
+                    <option value="http_errors" data-i18n="preset_http_errors">TLS/HTTPS and proxy errors</option>
+                  </select>
+                </span>
                 <button id="resetTags" class="btn ghost" type="button" data-i18n="resetTags">Restore default tags</button>
               </footer>
             </section>