Katan: highlight rolled hexes, one-button Build menu on small screens, clearer harbours

- Hexes that paid out for the turn's roll are lit (not on a 7, not the robber's hex, not before the roll).
- Compact layouts fold Road/Settlement/City into one Build button with a menu.
- Harbour markers are drawn with a resource pictogram (? for 3:1), larger, and sit a full hex radius off the coast so the piers show which vertices they serve.

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_018njn2eMPAYqAoE49hGRg2X

app/src/test/java/org/prolibertate/games/ui/game/catan/CatanGeometryTest.kt

@@ -111,7 +111,7 @@ class CatanGeometryTest {
             val anchor = layout.portAnchor(e)
             val mid = layout.edgeMidpoint(e)
             assertTrue("harbour on edge $e should be past the coast", dist(anchor, centre) > dist(mid, centre))
-            assertTrue("and not floating far from it", abs(dist(anchor, mid) - layout.radius * 0.62f) < 1f)
+            assertTrue("and not floating far from it", abs(dist(anchor, mid) - layout.radius * PORT_OFFSET) < 1f)
         }
     }
 }

app/src/test/java/org/prolibertate/games/ui/game/catan/CatanInteractionTest.kt

@@ -322,4 +322,27 @@ class CatanInteractionTest {
         val short = pending.withHand(1, hand())
         assertEquals(false to true, CatanInteraction.tradeResponses(CatanRules.legalMoves(short, 1)))
     }
+
+    // --- Rolled-hex highlight --------------------------------------------------
+
+    @Test
+    fun `rolled hexes are those carrying the number, minus the robber's`() {
+        val base = playing(turn = 0)
+        val number = base.numbers.first { it != 0 && it != 7 }
+        val state = base.copy(lastDice = if (number <= 7) listOf(number - 1, 1) else listOf(6, number - 6))
+        val all = (0 until CatanBoard.HEX_COUNT).filter { state.numbers[it] == number }
+        assertTrue(all.isNotEmpty())
+        assertEquals(all.filter { it != state.robber }.toSet(), CatanInteraction.rolledHexes(state))
+        val blocked = state.copy(robber = all.first())
+        assertFalse(all.first() in CatanInteraction.rolledHexes(blocked))
+    }
+
+    @Test
+    fun `nothing is highlighted before this turn's roll, on a seven, or in setup`() {
+        val rolled = playing(turn = 0).copy(lastDice = listOf(3, 3))
+        assertTrue(CatanInteraction.rolledHexes(rolled.copy(phase = CatanPhase.AWAIT_ROLL)).isEmpty())
+        assertTrue(CatanInteraction.rolledHexes(rolled.copy(lastDice = listOf(3, 4))).isEmpty())
+        assertTrue(CatanInteraction.rolledHexes(rolled.copy(phase = CatanPhase.SETUP_FIRST)).isEmpty())
+        assertTrue(CatanInteraction.rolledHexes(rolled.copy(lastDice = emptyList())).isEmpty())
+    }
 }