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

styles/components/_roster-strip.less

@@ -136,6 +136,17 @@
   }
 }
 
+// ── Small tile shell sizing (all S layouts) ─────────────────────────────────
+// Base .sp-avatar__shell is 60×60 fixed — override to follow --sp-widget-width
+.scrying-pool.scrying-pool-strip.sp-layout-vertical-sm,
+.scrying-pool.scrying-pool-strip.sp-layout-horizontal-sm,
+.scrying-pool.scrying-pool-strip.sp-layout-mosaic-sm {
+  .sp-participant-avatar .sp-avatar__shell {
+    width: calc(var(--sp-widget-width) - 12px);
+    height: calc(var(--sp-widget-width) - 12px);
+  }
+}
+
 // ── Toolbar: grip + toggle + DB + close on one line ─────────────────────────
 // All chrome lives here; hidden at rest, revealed on strip hover.
 .sp-strip__toolbar {
@@ -501,6 +512,27 @@
   }
 }
 
+// ============================================================
+// Spotlight focus state — gold ring (uses urgency-director token)
+// ============================================================
+.sp-participant-avatar.sp-state-focused {
+  .sp-avatar__shell::after {
+    box-shadow: inset 0 0 0 2px var(--sp-urgency-director);
+  }
+}
+
+// ============================================================
+// Drag-and-drop reorder feedback
+// ============================================================
+.sp-strip__participant-item.sp-dragging {
+  opacity: 0.3;
+}
+
+.sp-strip__participant-item.sp-drag-over {
+  box-shadow: inset 0 0 0 2px var(--sp-urgency-director);
+  border-radius: 4px;
+}
+
 // ============================================================
 // StateRing animations — gated under no-preference (AC-16)
 // ============================================================