A reusable symbol picker — the board's glyph joins its name in the info popover

SymbolPicker: one well at rest, a 6x6 curated grid in a popover (leading
well = the level default, clearing the key), and an optional search over
the OS's full symbol inventory read from CoreGlyphs metadata. Geometry
font-derived off StyleEditorLayout's base, grid enlarged by a deliberate
1.3x. Wired inline with the rename field in the board info popover
through the StyleCommand funnel; the Title header retires. Curated set
and the search's standing vs 03's full-browser refusal await ratification.

Kanban/UI/Board/BoardInfoPopover.swift

@@ -309,8 +309,27 @@ struct BoardInfoView: View {
     var body: some View {
         VStack(alignment: .leading, spacing: 0) {
             VStack(alignment: .leading, spacing: 6) {
-                sectionHeader("Title")
-                BoardRenameField(store: store)
+                HStack(spacing: 6) {
+                    // The board's own icon, inline with its name — the same field the embedded style
+                    // editor's symbol section below writes, offered here too since a board's identity
+                    // is its name *and* its glyph together (03-board-ui.md § Styling ▸ Controls). No
+                    // `undo:` — the board popover has none of its own, so this reaches the board's
+                    // stack exactly as the embedded editor's writes do.
+                    SymbolPicker(
+                        current: store.snapshot.icon.value,
+                        fallback: ItemSymbol.board,
+                        onSelect: { name in
+                            StyleCommand.apply(
+                                icon: name.map { StyleChange.set($0) } ?? .remove,
+                                to: .board,
+                                in: store,
+                                recents: recents
+                            )
+                        }
+                    )
+                    .disabled(!store.acceptsBoardMutations)
+                    BoardRenameField(store: store)
+                }
             }
             .padding(inset)