The board's symbol takes a tint — a 4×2 colour row under the picker's glyphs, and the glyph itself moves into the titlebar

iconColor stops being hand-written-only (user-ruled, superseding 03's
"schema yes, control no"): it rides StyleCommand.apply → applyStyle as
the third styled dimension — per-dimension no-op skip, one bracket, one
history step, ExpectedField.iconColor for staleness. The SymbolPicker
grows an opt-in colour row (leading None plus seven Palette.foregrounds
hues, None removes the key); the board popover is its one caller. The
window-title widget now draws the board's resolved glyph in that tint
beside the name. Doc realignment filed on the Redesign board (Minor).

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY

KanbanTests/SymbolPickerTests.swift

@@ -23,6 +23,23 @@ struct SymbolPickerCatalogDefaultSetTests {
     }
 }
 
+@Suite("SymbolPicker ▸ the colour row")
+struct SymbolPickerColorSetTests {
+
+    @Test("Seven unique tints — the leading None plus these fills the 4×2 grid exactly")
+    func shape() {
+        #expect(SymbolPickerCatalog.colorSet.count
+            == SymbolPickerLayout.colorColumns * SymbolPickerLayout.colorRows - 1)
+        #expect(Set(SymbolPickerCatalog.colorSet).count == SymbolPickerCatalog.colorSet.count)
+    }
+
+    @Test("Every entry is a palette name that resolves — pins the list against typos and palette drift")
+    func everyNameResolves() {
+        let missing = SymbolPickerCatalog.colorSet.filter { Palette.color(named: $0) == nil }
+        #expect(missing.isEmpty, "unresolvable palette names: \(missing)")
+    }
+}
+
 @Suite("SymbolPicker ▸ filter")
 struct SymbolPickerFilterTests {