revert(render): waiting screen back to the ROT treasure-hunt animation

The render-kit "waiting room" replaced the beloved scripted drama (player races for a
pulsating treasure, grabs it, escapes or is devoured by a monster pack, death shockwave +
ESCAPED! celebration, randomized variants) with a static lit room — a big downgrade. Restore
BOTH ROT waiting animations (block-wait AND awaiting-payment, selected via Game._awaitingPayment)
by hiding the render-kit host and letting the ROT display own the waiting screen. Remove the
now-unused SP.showWaiting/hideWaiting/waitingScene bridge code. The pack/mode still applies in
actual gameplay, which is what matters.

html/js/display/screenManager.js

@@ -331,17 +331,8 @@ var ScreenManager = {
     },
 
     drawWaitingScreen: function(_internalLoopCall = false) {
-        // Render the waiting "mining room" through the render kit (active pack/mode) when available,
-        // so the wait inherits your tiles/iso/3D. Falls back to the ROT animation below.
-        if (window.RK && RK.SPGame && RK.SPGame.showWaiting && RK.SPGame.available()) {
-            this._isShowingWaitingScreen = true;
-            var _appr = (window.SinglePlayerAvatar && SinglePlayerAvatar.currentAppearance) ? SinglePlayerAvatar.currentAppearance() : null;
-            var _crypto = this._cryptoType || undefined;
-            if (RK.SPGame.showWaiting('⛏ Mining the next block…', 'You drop in when it lands — then escape before the one after.', _crypto, _appr)) {
-                this.showAnimationButton();
-                return;
-            }
-        }
+        // The waiting screen is the beloved ROT "treasure hunt" scripted animation (chase / grab /
+        // escape-or-devoured drama). Hide the render-kit host so the ROT display owns the screen.
         if (window.RK && RK.SPGame) RK.SPGame.hide();
         if (!DisplayManager.ensureDisplay()) return;
         

html/js/render/spGameRenderer.js

@@ -42,56 +42,6 @@
         return !!(RK.createRenderer && RK.sceneFromGameState && gameDisplay());
     };
 
-    // A small lit "waiting room" Scene, drawn through the active renderer so the wait inherits the
-    // player's pack/mode. The tile renderer's FX loop flickers the torches; the camera centres it.
-    function waitingScene(opts) {
-        opts = opts || {};
-        var W = 11, H = 8, grid = [];
-        for (var y = 0; y < H; y++) {
-            var row = [];
-            for (var x = 0; x < W; x++) row.push((x === 0 || y === 0 || x === W - 1 || y === H - 1) ? 'wall' : 'floor');
-            grid.push(row);
-        }
-        grid[3][1] = 'torch'; grid[3][W - 2] = 'torch';   // wall torches (fire FX)
-        var px = (W - 1) >> 1;
-        var entities = [
-            { id: 'exit', x: px, y: 2, kind: 'feature', char: '>', color: '#d29922', label: null },
-            { id: 'player', x: px, y: H - 3, kind: 'player', you: true, facing: 'up', label: null,
-              avatar: (opts.playerAppearance && opts.playerAppearance.avatar) || 'default',
-              appearance: opts.playerAppearance || { avatar: 'default' } }
-        ];
-        return { cols: W, rows: H, grid: grid, entities: entities,
-                 legend: (RK.scene && RK.scene.DUNGEON_LEGEND) || null, isDungeon: true, background: '#0a0c0f' };
-    }
-
-    // Render the waiting-room scene + a text overlay (mining / payment). Returns true if it took over.
-    SP.showWaiting = function (title, sub, cryptoType, appearance) {
-        if (!SP.available()) return false;
-        SP.show();
-        SP._camX = null;
-        var r = SP._ensureRenderer();
-        if (!r) return false;
-        try { r.render(waitingScene({ playerAppearance: appearance, cryptoType: cryptoType })); SP._applyCamera(); }
-        catch (e) { return false; }
-        var host = rkHost();
-        var ov = doc().getElementById('rk-wait-overlay');
-        if (!ov) {
-            ov = doc().createElement('div');
-            ov.id = 'rk-wait-overlay';
-            ov.style.cssText = 'position:absolute;left:0;right:0;bottom:0;padding:0 12px 7%;text-align:center;' +
-                'pointer-events:none;font-family:ui-monospace,monospace;text-shadow:0 2px 8px #000;z-index:4;';
-            host.appendChild(ov);
-        }
-        ov.innerHTML = '<div style="font-size:20px;font-weight:800;letter-spacing:1px;color:#f0a828;">' + title + '</div>' +
-            '<div style="font-size:13px;color:#cfe0b8;margin-top:5px;">' + (sub || '') + '</div>';
-        ov.style.display = 'block';
-        return true;
-    };
-    SP.hideWaiting = function () {
-        var ov = doc() && doc().getElementById('rk-wait-overlay');
-        if (ov) ov.style.display = 'none';
-    };
-
     SP.mode = function () {
         if (!SP._mode) {
             var m = (RK.loadMode && RK.loadMode('tiles')) || 'tiles';
@@ -216,7 +166,6 @@
     // (caller then skips the legacy renderer). Non-destructive on failure.
     SP.render = function (clientState, opts) {
         if (!SP._live || !SP.available()) return false;
-        SP.hideWaiting(); // the real game is rendering — drop the waiting-room overlay
         var r = SP._ensureRenderer();
         if (!r) return false;
         opts = opts || {};