Add re-order, spotlight/focus, and auto-position-snapshots features

- HTML5 drag-and-drop reordering of strip participants (per-GM flag)
- Shift+click toggles spotlight focus on a participant (gold ring indicator)
- Escape exits focus mode
- Auto-save strip position on drag end + every 30s with viewport validation
- Reset strip position button in Director's Board
- French locale strings for reset button

templates/directors-board.hbs

@@ -120,7 +120,7 @@
       <div class="directors-board__widget-width-row">
         <span>{{localize "scrying-pool.directorsBoard.widgetWidth.small"}}</span>
         <select class="directors-board__widget-width-select" data-action="set-widget-width-sm" data-selected="{{widgetWidthSm}}">
-          {{#each widthOptions}}
+          {{#each smWidthOptions}}
             <option value="{{this.value}}">{{this.label}}</option>
           {{/each}}
         </select>
@@ -128,7 +128,7 @@
       <div class="directors-board__widget-width-row">
         <span>{{localize "scrying-pool.directorsBoard.widgetWidth.large"}}</span>
         <select class="directors-board__widget-width-select" data-action="set-widget-width-md" data-selected="{{widgetWidthMd}}">
-          {{#each widthOptions}}
+          {{#each mdWidthOptions}}
             <option value="{{this.value}}">{{this.label}}</option>
           {{/each}}
         </select>
@@ -137,6 +137,13 @@
   </div>
 
   <footer class="directors-board__footer">
+    <div class="directors-board__footer-group directors-board__footer-group--strip">
+      <button type="button" class="directors-board__footer-btn directors-board__footer-btn--secondary" data-action="reset-strip-position"
+              data-tooltip="{{localize "scrying-pool.directorsBoard.footer.resetStrip"}}">
+        <i class="fas fa-undo-alt" aria-hidden="true"></i>
+        {{localize "scrying-pool.directorsBoard.footer.resetStrip"}}
+      </button>
+    </div>
     <div class="directors-board__footer-group directors-board__footer-group--presets">
       <button type="button" class="directors-board__footer-btn" data-action="save-preset"
               data-tooltip="{{localize "scrying-pool.directorsBoard.footer.savePreset"}}">

templates/roster-strip.hbs

@@ -51,7 +51,7 @@
       {{#each participants}}
         <li class="sp-strip__participant-item" role="listitem">
           {{!-- ParticipantAvatar (44×44px container) --}}
-          <button class="sp-participant-avatar sp-state-{{state}}{{#if hasPendingOp}} sp-state-pending{{/if}} sp-shape-{{../tileShape}}"
+          <button class="sp-participant-avatar sp-state-{{state}}{{#if hasPendingOp}} sp-state-pending{{/if}}{{#if isFocused}} sp-state-focused{{/if}} sp-shape-{{../tileShape}}"
                   data-user-id="{{userId}}"
                   data-action="open-popover"
                   role="button"