Rename the color tags "Filters" tab and column to "Pattern" (FR: "Motif de recherche")

Only the color highlight rules are renamed: the Settings tab, the codes
column of the log list and the docs. Real filters (source, severity,
range, search) keep their name. The internal "filters" tab id is kept so
the saved settings tab still opens.

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

web/index.html

@@ -143,7 +143,7 @@
       <span data-col="sev"><span class="lbl" data-i18n="colSev">Severity</span><i class="grip" data-i18n-title="colGrip"></i></span>
       <span data-col="host"><span class="lbl" data-i18n="colHost">Host</span><i class="grip" data-i18n-title="colGrip"></i></span>
       <span data-col="app"><span class="lbl" data-i18n="colApp">App</span><i class="grip" data-i18n-title="colGrip"></i></span>
-      <span data-col="codes"><span class="lbl" data-i18n="colCodes" data-i18n-title="codesTitle">Filters</span></span>
+      <span data-col="codes"><span class="lbl" data-i18n="colCodes" data-i18n-title="codesTitle">Pattern</span></span>
       <span data-col="msg"><span class="lbl" data-i18n="colMsg">Message</span></span>
     </div>
     <main id="list" class="list"></main>
@@ -179,7 +179,7 @@
           </button>
           <button type="button" role="tab" data-tab="filters">
             <svg viewBox="0 0 24 24"><path d="M3 12V4a1 1 0 0 1 1-1h8l9 9-9 9z"/><circle cx="8" cy="8" r="1.5"/></svg>
-            <span data-i18n="tabFilters">Filters</span>
+            <span data-i18n="tabFilters">Pattern</span>
           </button>
           <button type="button" role="tab" data-tab="sources">
             <svg viewBox="0 0 24 24"><path d="M21 8 12 3 3 8v8l9 5 9-5z"/><path d="m3 8 9 5 9-5M12 13v8"/></svg>
@@ -218,7 +218,7 @@
             </section>
           </div>
 
-          <!-- Filters -->
+          <!-- Pattern (color tags; the "filters" tab id is kept for saved settings) -->
           <div class="set-panel wide" role="tabpanel" data-panel="filters" hidden>
             <section class="set-section tags-section">
               <div class="sec-head">