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/style.css

@@ -685,7 +685,7 @@ input.switch:checked::after { transform: translateX(14px); }
 input.switch:disabled { cursor: not-allowed; }
 input.switch:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
 
-/* Settings > Filters: toolbar kept in view while the list scrolls, dense rows. */
+/* Settings > Pattern: toolbar kept in view while the list scrolls, dense rows. */
 .tags-section { padding-top: 12px !important; }
 .tag-toolbar {
   position: sticky; top: -16px; z-index: 2;