feat: add Phase 20a stage identities and overlap selection

sandbox_theme.json

@@ -114,6 +114,58 @@
       "padding": 12
     },
     "action_menu": { "font_size": 24 },
+    "anchored_chooser": {
+      "preferred_width": 360,
+      "edge_inset": 8,
+      "safe_top": 120,
+      "safe_bottom": 48,
+      "content_inset": 12,
+      "heading_font_size": 20,
+      "row_height": 56,
+      "row_gap": 8,
+      "header_gap": 8,
+      "footer_gap": 8,
+      "max_rows_height": 320,
+      "minimum_rows_height": 116,
+      "row_font_size": 20,
+      "row_text_color": "#F5F7FA",
+      "row_surface": "#171B24",
+      "row_border_color": "#FFFFFF55",
+      "selected_surface": "#12394A",
+      "hover_surface": "#203849",
+      "accent_color": "#22C6FF",
+      "focus_color": "#8BD9FF",
+      "corner_radius": 14,
+      "border_width": 2,
+      "bg_color": "#202633FA",
+      "border_color": "#667386",
+      "padding": 0,
+      "shadow_size": 6,
+      "shadow_color": "#00000080",
+      "shadow_offset": [0, 4],
+      "row_corner_radius": 12,
+      "row_border_width": 1,
+      "selected_border_width": 2,
+      "hover_border_width": 2,
+      "focus_border_width": 3,
+      "row_padding_x": 12,
+      "row_padding_y": 6,
+      "badge_corner_radius": 8,
+      "badge_surface": "#12394A",
+      "badge_text_color": "#F5F7FA",
+      "badge_font_size": 16,
+      "badge_padding_x": 8,
+      "badge_padding_y": 2,
+      "cancel_width": 120,
+      "cancel_height": 48,
+      "cancel_corner_radius": 10,
+      "cancel_border_width": 2,
+      "cancel_font_size": 20,
+      "cancel_surface": "#293242",
+      "cancel_hover_surface": "#354154",
+      "cancel_border_color": "#718096",
+      "cancel_text_color": "#F5F7FA"
+    },
     "dialog": {
       "surface_color_size": [560, 640],
       "surface_color_preview_size": [420, 140],
@@ -348,7 +400,12 @@
       "selection_color": "#F5F7FAE6",
       "hover_color": "#FFE66DCC",
       "rotate_color": "#4DB9FFE6",
-      "backing_extra_width": 3.0
+      "backing_extra_width": 3.0,
+      "candidate_name_pill_bg_color": "#182432F2",
+      "candidate_name_pill_corner_radius": 8.0,
+      "candidate_name_pill_border_width": 3.0,
+      "candidate_name_pill_padding_x": 12.0,
+      "candidate_name_pill_padding_y": 8.0
     }
   },
   "widgets": {