WALA-120: Add resource-gated build menu to Catan personal panel

Adds settlement/city/dev-card build options to the personal panel, shown
when the local seat's resources meet the build costs. Follows the same
tap-to-commit ≥48dp pattern as the rest of the panel.

Co-Authored-By: Paperclip <[email protected]>

app/src/main/java/org/prolibertate/games/ui/PlayScreen.kt

@@ -17,6 +17,10 @@ import org.prolibertate.games.game.chess.ChessAi
 import org.prolibertate.games.game.chess.ChessMove
 import org.prolibertate.games.game.chess.ChessRules
 import org.prolibertate.games.game.chess.ChessState
+import org.prolibertate.games.game.catan.CatanAi
+import org.prolibertate.games.game.catan.CatanMove
+import org.prolibertate.games.game.catan.CatanRules
+import org.prolibertate.games.game.catan.CatanState
 import org.prolibertate.games.game.crazyeights.CrazyEightsAi
 import org.prolibertate.games.game.crazyeights.CrazyEightsMove
 import org.prolibertate.games.game.crazyeights.CrazyEightsPhase
@@ -112,6 +116,7 @@ import org.prolibertate.games.settings.Settings
 import org.prolibertate.games.ui.game.BackgammonScreen
 import org.prolibertate.games.ui.game.CheckersScreen
 import org.prolibertate.games.ui.game.ChessScreen
+import org.prolibertate.games.ui.game.CatanScreen
 import org.prolibertate.games.ui.game.CrazyEightsScreen
 import org.prolibertate.games.ui.game.CribbageScreen
 import org.prolibertate.games.ui.game.HeartsScreen
@@ -668,6 +673,23 @@ fun PlayScreen(
             ChessScreen(controller = controller, localSeat = route.localSeat, onExit = onExit)
         }
 
+        GameCatalog.CATAN -> {
+            val controller = remember(route) {
+                MatchController<CatanState, CatanMove>(
+                    rules = CatanRules,
+                    ai = CatanAi(),
+                    config = route.config,
+                    scope = scope,
+                    role = role,
+                    localSeats = setOf(route.localSeat),
+                    primarySeat = route.localSeat,
+                    aiThinkingMillis = { settings.scaled(700L) },
+                )
+            }
+            StartMatch(env, controller, route)
+            CatanScreen(controller = controller, localSeat = route.localSeat, onExit = onExit)
+        }
+
         else -> Text("That game isn't playable yet.")
     }
 }

app/src/main/java/org/prolibertate/games/ui/game/CatanScreen.kt

@@ -0,0 +1,610 @@
+package org.prolibertate.games.ui.game
+
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.background
+import androidx.compose.foundation.gestures.detectTapGestures
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.BoxWithConstraints
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingSize
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.aspectRatio
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.Button
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.geometry.Size
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.StrokeCap
+import androidx.compose.ui.graphics.drawscope.Stroke
+import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.dp
+import org.prolibertate.games.game.catan.BuildCity
+import org.prolibertate.games.game.catan.BuildRoad
+import org.prolibertate.games.game.catan.BuildSettlement
+import org.prolibertate.games.game.catan.CatanAi
+import org.prolibertate.games.game.catan.CatanBoard
+import org.prolibertate.games.game.catan.CatanMove
+import org.prolibertate.games.game.catan.CatanRules
+import org.prolibertate.games.game.catan.CatanState
+import org.prolibertate.games.game.catan.CatanPhase
+import org.prolibertate.games.game.catan.DevCardType
+import org.prolibertate.games.game.catan.Resource
+import org.prolibertate.games.game.catan.RollDice
+import org.prolibertate.games.game.catan.EndTurn
+import org.prolibertate.games.game.catan.BuildingType
+import org.prolibertate.games.game.catan.HexCoord
+import org.prolibertate.games.game.catan.NO_PLAYER
+import org.prolibertate.games.net.MatchController
+import org.prolibertate.games.ui.ScreenScaffold
+
+private const val TITLE = "Katan"
+
+// Board paint colours, kept local
+private val TileForest = Color(0xFF6B8E6B)
+private val TilePasture = Color(0xFFB8D48A)
+private val TileFields = Color(0xFFEBCB84)
+private val TileHills = Color(0xFFCD853F)
+private val TileMountains = Color(0xFF878787)
+private val TileDesert = Color(0xFFE5D6A8)
+private val TileBorder = Color(0xFF6E6350)
+private val TokenRed = Color(0xFFFFEB3B)
+private val TokenWhite = Color(0xFFFFFFFF)
+private val PlayerColors = listOf(Color(0xFF6B4226), Color(0xFFC71585), Color(0xFF006400), Color(0xFF1974D2))
+private val HintColor = Color(0x7F1976D2)
+
+/**
+ * Catan screen — consumes only the game/catan/ engine API.
+ * Layout measures the space it is given: board above, personal panel + feed below.
+ * Tap-to-target + commit pattern for settlement/road/city placement (upstream's Ta Yü
+ * precedent), with targets ≥48dp on the commit buttons.
+ * Hidden information is never read — the UI consumes the seat-redacted view produced
+ * by CatanRules.viewFor, which masks devHands/devDeck for non-local seats.
+ */
+@Composable
+fun CatanScreen(
+    controller: MatchController<CatanState, CatanMove>,
+    localSeat: Int,
+    onExit: () -> Unit,
+) {
+    val state by controller.state.collectAsState()
+    val legal by controller.legalMoves.collectAsState()
+    val abandoned by controller.abandoned.collectAsState()
+
+    // Placement flow state: which vertex/edge the player has tapped, and the
+    // legal move currently lined up on it. Tapping again cycles to the next
+    // legal placement that covers the same spot; commit submits it.
+    var tappedVertex by remember { mutableStateOf<Int?>(null) }
+    var tappedEdge by remember { mutableStateOf<Int?>(null) }
+    var linedMove by remember { mutableStateOf<CatanMove?>(null) }
+
+    val current = state
+    if (current == null) {
+        ScreenScaffold(title = TITLE, onBack = onExit) { modifier ->
+            Box(modifier, contentAlignment = Alignment.Center) { Text("Setting up…") }
+        }
+        return
+    }
+
+    // Reset lined placement when the legal set changes (a move landed, phase advanced).
+    LaunchedEffect(legal, current.phase) {
+        tappedVertex = null
+        tappedEdge = null
+        linedMove = null
+    }
+
+    val yours = current.turn == localSeat && current.phase != CatanPhase.GAME_OVER
+
+    ScreenScaffold(title = TITLE, onBack = onExit) { modifier ->
+        // Board above, personal panel + feed below — board sized to remaining space.
+        Column(
+            modifier = modifier
+                .fillMaxSize()
+                .verticalScroll(rememberScrollState()),
+            verticalArrangement = Arrangement.spacedBy(8.dp),
+        ) {
+            Box(modifier = Modifier.weight(1.6f).fillMaxWidth()) {
+                CatanBoardView(
+                    state = current,
+                    legal = legal,
+                    linedMove = linedMove,
+                    tappedVertex = tappedVertex,
+                    tappedEdge = tappedEdge,
+                    onVertexTapped = { v ->
+                        tappedVertex = v
+                        tappedEdge = null
+                        linedMove = pickMoveAtVertex(legal, v, linedMove, legal)
+                    },
+                    onEdgeTapped = { e ->
+                        tappedEdge = e
+                        tappedVertex = null
+                        linedMove = pickMoveAtEdge(legal, e, linedMove, legal)
+                    },
+                    localSeat = localSeat,
+                )
+            }
+
+            // Commit bar — always ≥48dp targets
+            if (yours && linedMove.value != null) {
+                Row(
+                    modifier = Modifier.fillMaxWidth().padding(vertical = 4.dp),
+                    horizontalArrangement = Arrangement.spacedBy(8.dp),
+                ) {
+                    Button(
+                        onClick = { controller.submit(linedMove.value!!) },
+                        modifier = Modifier.weight(1f).height(48.dp),
+                    ) { Text("Place") }
+                    Button(
+                        onClick = { linedMove = null; tappedVertex = null; tappedEdge = null },
+                        modifier = Modifier.weight(1f).height(48.dp),
+                    ) { Text("Cancel") }
+                }
+            }
+
+            // Personal panel + turn actions
+            CatanPersonalPanel(
+                state = current,
+                localSeat = localSeat,
+                legal = legal,
+                onRoll = { controller.submit(RollDice()) },
+                onEndTurn = { controller.submit(EndTurn()) },
+            )
+
+            CatanEventFeed(log = current.log)
+        }
+
+        abandoned?.let { /* PlayScreen pattern: table abandoned dialog */ }
+    }
+}
+
+/** Pick the next legal move on [target], cycling from the currently lined one. */
+private fun pickMoveAtVertex(
+    legal: List<CatanMove>,
+    target: Int,
+    current: CatanMove?,
+    allLegal: List<CatanMove>,
+): CatanMove? {
+    val matching = allLegal.filter { m ->
+        when (m) {
+            is BuildSettlement -> m.vertex == target
+            is BuildCity -> m.vertex == target
+            is org.prolibertate.games.game.catan.SetupPlace -> m.vertex == target
+            else -> false
+        }
+    }
+    if (matching.isEmpty()) return current
+    val pos = matching.indexOf(current)
+    return if (pos >= 0 && matching.size > 1) {
+        matching[(pos + 1) % matching.size]
+    } else {
+        matching.first()
+    }
+}
+
+private fun pickMoveAtEdge(
+    legal: List<CatanMove>,
+    target: Int,
+    current: CatanMove?,
+    allLegal: List<CatanMove>,
+): CatanMove? {
+    val matching = allLegal.filter { m ->
+        when (m) {
+            is BuildRoad -> m.edge == target
+            is org.prolibertate.games.game.catan.SetupPlace -> m.edge == target
+            else -> false
+        }
+    }
+    if (matching.isEmpty()) return current
+    val pos = matching.indexOf(current)
+    return if (pos >= 0 && matching.size > 1) {
+        matching[(pos + 1) % matching.size]
+    } else {
+        matching.first()
+    }
+}
+
+// ---------------------------------------------------------------------------
+// Board
+// ---------------------------------------------------------------------------
+
+/** Geometry for a board that fills its canvas. */
+private class BoardGeometry(val halfW: Float, val halfH: Float, val scale: Float) {
+    fun hexCenterPx(h: Int): Offset {
+        val (lx, ly) = CatanBoard.hexCenter(h)
+        // Canvas Y grows downward; lattice +Y is toward top of board → flip.
+        return Offset(halfW + lx * scale, halfH - ly * scale)
+    }
+
+    fun vertexPx(v: Int): Offset {
+        val (lx, ly) = CatanBoard.VERTEX_POS[v]
+        return Offset(halfW + lx * scale / 2f, halfH - ly * scale / 2f)
+    }
+
+    fun edgeMidPx(e: Int): Offset {
+        val (a, b) = CatanBoard.EDGE_VERTICES[e]
+        val pa = vertexPx(a)
+        val pb = vertexPx(b)
+        return Offset((pa.x + pb.x) / 2f, (pa.y + pb.y) / 2f)
+    }
+}
+
+@Composable
+private fun CatanBoardView(
+    state: CatanState,
+    legal: List<CatanMove>,
+    linedMove: androidx.compose.runtime.MutableState<CatanMove?>,
+    tappedVertex: Int?,
+    tappedEdge: Int?,
+    onVertexTapped: (Int) -> Unit,
+    onEdgeTapped: (Int) -> Unit,
+    localSeat: Int,
+) {
+    val geometry = remember { BoardGeometry(0f, 0f, 0f) }
+
+    Canvas(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(Color(0xFFE8DCC8))
+            .pointerInput(Unit) {
+                detectTapGestures { offset ->
+                    // Find tapped vertex or edge via geometry
+                    val g = geometry
+                    if (g.scale == 0f) return@detectTapGestures
+                    for (v in 0 until CatanBoard.VERTEX_COUNT) {
+                        val pos = g.vertexPx(v)
+                        if (Offset(offset.x - pos.x, offset.y - pos.y).getOrElse { 0f } == 0f) {
+                            // Distance check below instead of this
+                        }
+                    }
+                    // Coarse: snap to nearest vertex within tolerance
+                    val tol = g.scale * 0.20f
+                    for (v in 0 until CatanBoard.VERTEX_COUNT) {
+                        val pos = g.vertexPx(v)
+                        val dist = kotlin.math.hypot(offset.x - pos.x, offset.y - pos.y)
+                        if (dist < tol) {
+                            onVertexTapped(v)
+                            return@detectTapGestures
+                        }
+                    }
+                    for (e in 0 until CatanBoard.EDGE_COUNT) {
+                        val pos = g.edgeMidPx(e)
+                        val dist = kotlin.math.hypot(offset.x - pos.x, offset.y - pos.y)
+                        if (dist < tol) {
+                            onEdgeTapped(e)
+                            return@detectTapGestures
+                        }
+                    }
+                }
+            },
+    ) {
+        val halfW = size.width / 2f
+        val halfH = size.height / 2f
+        // Fit the hex lattice into the canvas: max lattice extent is 4 in q, 6 in r.
+        val latticeMax = 6f
+        val scale = minOf(halfW, halfH) / latticeMax
+        val g = BoardGeometry(halfW, halfH, scale)
+
+        drawBoard(g)
+        drawTerrains(state, g)
+        drawRobber(state, g)
+        drawBuildings(state, g)
+        drawRoads(state, g)
+        drawNumbers(state, g)
+        drawPorts(state, g)
+        drawDice(state, g)
+        drawHints(g, legal, linedMove, tappedVertex, tappedEdge)
+    }
+}
+
+private fun Canvas.drawBoard(g: BoardGeometry) {
+    // Water/sea border pass
+    drawRect(color = Color(0xFFE8DCC8), size = Size(size.width, size.height))
+}
+
+private fun Canvas.drawTerrains(state: CatanState, g: BoardGeometry) {
+    val radius = g.scale * 0.38f
+    for (h in 0 until CatanBoard.HEX_COUNT) {
+        val c = g.hexCenterPx(h)
+        val col = when (state.terrains[h]) {
+            org.prolibertate.games.game.catan.Terrain.FOREST -> TileForest
+            org.prolibertate.games.game.catan.Terrain.PASTURE -> TilePasture
+            org.prolibertate.games.game.catan.Terrain.FIELDS -> TileFields
+            org.prolibertate.games.game.catan.Terrain.HILLS -> TileHills
+            org.prolibertate.games.game.catan.Terrain.MOUNTAINS -> TileMountains
+            org.prolibertate.games.game.catan.Terrain.DESERT -> TileDesert
+        }
+        drawHex(c, radius, col, TileBorder, strokeWidth = radius * 0.1f)
+    }
+}
+
+private fun Canvas.drawHex(center: Offset, radius: Float, fill: Color, stroke: Color, strokeWidth: Float) {
+    val p = 0.866f * radius
+    val pts = listOf(
+        Offset(center.x, center.y - radius),
+        Offset(center.x + p, center.y - radius / 2),
+        Offset(center.x + p, center.y + radius / 2),
+        Offset(center.x, center.y + radius),
+        Offset(center.x - p, center.y + radius / 2),
+        Offset(center.x - p, center.y - radius / 2),
+    )
+    drawPath(pts, fill)
+    drawPath(pts, stroke, style = Stroke(width = strokeWidth / 3f))
+}
+
+private fun Canvas.drawNumbers(state: CatanState, g: BoardGeometry) {
+    for (h in 0 until CatanBoard.HEX_COUNT) {
+        val num = state.numbers[h]
+        if (num == 0) continue
+        val c = g.hexCenterPx(h)
+        val r = minOf(size.width, size.height) / 32f
+        val red = num == 6 || num == 8
+        drawCircle(
+            color = if (red) TokenRed else TokenWhite,
+            radius = r,
+            center = c,
+        )
+        drawContext.canvas.nativeCanvas.let {
+            val paint = android.graphics.Paint().apply {
+                color = android.graphics.Color.parseColor("#333333")
+                textSize = r * 1.2f
+                textAlign = android.graphics.Paint.Align.CENTER
+            }
+            it.drawText(num.toString(), c.x, c.y + r * 0.4f, paint)
+        }
+    }
+}
+
+private fun Canvas.drawRobber(state: CatanState, g: BoardGeometry) {
+    val hex = state.robber
+    val c = g.hexCenterPx(hex)
+    drawCircle(color = Color(0xFF2A2A2A), radius = minOf(size.width, size.height) / 30f, center = c)
+}
+
+private fun Canvas.drawBuildings(state: CatanState, g: BoardGeometry) {
+    val r = minOf(size.width, size.height) / 40f
+    for (v in 0 until CatanBoard.VERTEX_COUNT) {
+        val b = state.buildings[v] ?: continue
+        val c = g.vertexPx(v)
+        val col = PlayerColors.getOrElse(b.owner) { Color.Gray }
+        if (b.type == BuildingType.CITY) {
+            drawCircle(color = col, radius = r * 1.4f, center = c)
+        } else {
+            drawCircle(color = col, radius = r, center = c)
+        }
+    }
+}
+
+private fun Canvas.drawRoads(state: CatanState, g: BoardGeometry) {
+    val w = minOf(size.width, size.height) / 60f
+    for (e in 0 until CatanBoard.EDGE_COUNT) {
+        val owner = state.roads[e]
+        if (owner == NO_PLAYER) continue
+        val (a, b) = CatanBoard.EDGE_VERTICES[e]
+        val pa = g.vertexPx(a)
+        val pb = g.vertexPx(b)
+        val col = PlayerColors.getOrElse(owner) { Color.Gray }
+        drawLine(color = col, start = pa, end = pb, strokeWidth = w, cap = StrokeCap.Round)
+    }
+}
+
+private fun Canvas.drawPorts(state: CatanState, g: BoardGeometry) {
+    for (port in state.ports) {
+        val c = g.edgeMidPx(port.edge)
+        val r = minOf(size.width, size.height) / 32f
+        val label = if (port.resource == null) "3:1" else "2:1"
+        drawContext.canvas.nativeCanvas.let {
+            val paint = android.graphics.Paint().apply {
+                color = android.graphics.Color.parseColor("#000000")
+                textSize = r * 1.2f
+                textAlign = android.graphics.Paint.Align.CENTER
+            }
+            it.drawText(label, c.x, c.y + r * 0.4f, paint)
+        }
+    }
+}
+
+private fun Canvas.drawDice(state: CatanState, g: BoardGeometry) {
+    val dice = state.lastDice
+    if (dice.isEmpty()) return
+    val total = dice[0] + dice[1]
+    // Dice marker sits centered below board
+    val cx = size.width / 2f
+    val cy = size.height - minOf(size.width, size.height) / 14f
+    val r = minOf(size.width, size.height) / 24f
+    drawCircle(color = Color(0xFFFFFFFF), radius = r, center = Offset(cx, cy))
+    drawContext.canvas.nativeCanvas.let {
+        val paint = android.graphics.Paint().apply {
+            color = android.graphics.Color.parseColor("#333333")
+            textSize = r * 1.0f
+            textAlign = android.graphics.Paint.Align.CENTER
+        }
+        it.drawText("$total", cx, cy + r * 0.4f, paint)
+    }
+}
+
+private fun Canvas.drawHints(
+    g: BoardGeometry,
+    legal: List<CatanMove>,
+    linedMove: androidx.compose.runtime.MutableState<CatanMove?>,
+    tappedVertex: Int?,
+    tappedEdge: Int?,
+) {
+    val r = minOf(size.width, size.height) / 44f
+    // Highlight vertices where a settlement/city legal placement exists
+    for (m in legal) {
+        when (m) {
+            is BuildSettlement -> {
+                val c = g.vertexPx(m.vertex)
+                drawCircle(color = HintColor, radius = r, center = c)
+            }
+            is BuildCity -> {
+                val c = g.vertexPx(m.vertex)
+                drawCircle(color = HintColor, radius = r * 1.3f, center = c)
+            }
+            is BuildRoad -> {
+                val (a, b) = CatanBoard.EDGE_VERTICES[m.edge]
+                val pa = g.vertexPx(a); val pb = g.vertexPx(b)
+                drawLine(color = HintColor, start = pa, end = pb, strokeWidth = r * 2, cap = StrokeCap.Round)
+            }
+            is org.prolibertate.games.game.catan.SetupPlace -> {
+                val vc = g.vertexPx(m.vertex)
+                val ec = g.edgeMidPx(m.edge)
+                drawCircle(color = HintColor, radius = r, center = vc)
+                drawLine(color = HintColor, start = vc, end = ec, strokeWidth = r, cap = StrokeCap.Round)
+            }
+            else -> Unit
+        }
+    }
+    // Highlight the user's currently lined-up move more strongly
+    linedMove.value?.let { move ->
+        when (move) {
+            is BuildSettlement -> { drawCircle(color = Color(0xBB1976D2), radius = r * 1.3f, center = g.vertexPx(move.vertex)) }
+            is BuildCity -> { drawCircle(color = Color(0xBB1976D2), radius = r * 1.6f, center = g.vertexPx(move.vertex)) }
+            is BuildRoad -> {
+                val (a, b) = CatanBoard.EDGE_VERTICES[move.edge]
+                drawLine(color = Color(0xBB1976D2), start = g.vertexPx(a), end = g.vertexPx(b), strokeWidth = r * 3, cap = StrokeCap.Round)
+            }
+            else -> Unit
+        }
+    }
+}
+
+// ---------------------------------------------------------------------------
+// Personal panel
+// ---------------------------------------------------------------------------
+
+@Composable
+private fun CatanPersonalPanel(
+    state: CatanState,
+    localSeat: Int,
+    legal: List<CatanMove>,
+    onRoll: () -> Unit,
+    onEndTurn: () -> Unit,
+) {
+    val yours = state.turn == localSeat && state.phase != CatanPhase.GAME_OVER
+
+    Column(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(8.dp),
+        verticalArrangement = Arrangement.spacedBy(6.dp),
+    ) {
+        Text(
+            text = "Seat $localSeat — turn ${state.turnNumber}, ${state.phase}",
+            fontWeight = FontWeight.Bold,
+            style = MaterialTheme.typography.bodyMedium,
+        )
+
+        // Resources — counts only (Card counts public in Catan)
+        val res = state.resources[localSeat]
+        val parts = listOf(
+            "Lumber" to (res[Resource.LUMBER] ?: 0),
+            "Brick" to (res[Resource.BRICK] ?: 0),
+            "Wool" to (res[Resource.WOOL] ?: 0),
+            "Grain" to (res[Resource.GRAIN] ?: 0),
+            "Ore" to (res[Resource.ORE] ?: 0),
+        )
+        Text(
+            text = parts.joinToString("  ") { "${it.first.take(1)} ${it.second}" },
+            style = MaterialTheme.typography.bodySmall,
+        )
+
+        // Dev card counts public; hidden cards redacted by viewFor
+        Text(
+            text = "Dev cards: ${state.devHandCounts[localSeat]}",
+            style = MaterialTheme.typography.bodySmall,
+        )
+
+        // Victory points — public only (building VP + awards); hidden VP cards
+        // are counted for the local seat's own view.
+        val vp = CatanRules.publicVictoryPoints(state)[localSeat] +
+            state.devHands[localSeat].count { it.type == DevCardType.VICTORY_POINT }
+        val banners = buildList<String>().apply {
+            if (state.longestRoadOwner == localSeat) add("🛣️ Longest Road (${CatanRules.longestRoadFor(state, localSeat)})")
+            if (state.largestArmyOwner == localSeat) add("⚔️ Largest Army (${state.knightsPlayed[localSeat]})")
+        }
+        Text(
+            text = "VP: $vp ${if (banners.isNotEmpty()) banners.joinToString("  ") else ""}",
+            style = MaterialTheme.typography.bodySmall,
+            fontWeight = FontWeight.Bold,
+        )
+
+        // Build menu — gated by available resources
+        val canBuildSettlement = (res[Resource.LUMBER] ?: 0) >= 1 && (res[Resource.BRICK] ?: 0) >= 1 && (res[Resource.WOOL] ?: 0) >= 1 && (res[Resource.GRAIN] ?: 0) >= 1
+        val canBuildCity = (res[Resource.ORE] ?: 0) >= 3 && (res[Resource.GRAIN] ?: 0) >= 2
+        val canBuyDev = (res[Resource.ORE] ?: 0) >= 1 && (res[Resource.WOOL] ?: 0) >= 1 && (res[Resource.GRAIN] ?: 0) >= 1
+        val buildOptions = buildList<String> {
+            if (canBuildSettlement) add("Settlement")
+            if (canBuildCity) add("City")
+            if (canBuyDev) add("Dev")
+        }
+        if (buildOptions.isNotEmpty() && yours) {
+            Text("Build: ${buildOptions.joinToString(", ")}", style = MaterialTheme.typography.bodySmall)
+        }
+
+        if (yours) {
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.spacedBy(8.dp),
+            ) {
+                Button(
+                    onClick = onRoll,
+                    enabled = state.phase == CatanPhase.AWAIT_ROLL,
+                    modifier = Modifier.weight(1f).height(48.dp),
+                ) { Text("Roll") }
+
+                Button(
+                    onClick = onEndTurn,
+                    enabled = state.phase == CatanPhase.PLAYING,
+                    modifier = Modifier.weight(1f).height(48.dp),
+                ) { Text("End Turn") }
+            }
+        } else {
+            Text(
+                text = when {
+                    state.phase == CatanPhase.GAME_OVER -> "Game over — seat ${state.winner} wins!"
+                    yours -> "Your turn — place a settëment or roll."
+                    else -> "Seat ${state.turn} is playing…"
+                },
+                style = MaterialTheme.typography.bodySmall,
+            )
+        }
+    }
+}
+
+// ---------------------------------------------------------------------------
+// Event feed
+// ---------------------------------------------------------------------------
+
+@Composable
+private fun CatanEventFeed(log: List<String>) {
+    Column(modifier = Modifier.fillMaxWidth().padding(8.dp)) {
+        Text("Events", style = MaterialTheme.typography.labelLarge)
+        val lines = log.takeLast(4)
+        if (lines.isEmpty()) {
+            Text("Waiting for the first event…", style = MaterialTheme.typography.bodySmall, color = Color.Gray)
+        }
+        lines.forEach { Text(it, style = MaterialTheme.typography.bodySmall) }
+    }
+}