perf: benchmark complete table layouts

.github/workflows/ensure-labels.yml

@@ -29,6 +29,7 @@ jobs:
               { name: "performance-display-spawn", color: "bfdadc", description: "Use the display entity spawn performance profile" },
               { name: "performance-region-queue", color: "bfdadc", description: "Use the region update queue performance profile" },
               { name: "performance-region-keys", color: "bfdadc", description: "Use the region key plan performance profile" },
+              { name: "performance-layout", color: "bfdadc", description: "Use the all-variant table layout performance profile" },
               { name: "performance-scheduler-reflection", color: "bfdadc", description: "Use the scheduler reflection performance profile" },
               { name: "performance-ray-proxy", color: "bfdadc", description: "Use the client ray-proxy performance profile" }
             ];

.github/workflows/performance-ab.yml

@@ -37,6 +37,7 @@ on:
           - display-spawn
           - region-queue
           - region-keys
+          - layout
           - scheduler-reflection
           - ray-proxy
           - infra
@@ -166,6 +167,7 @@ jobs:
               "performance-display-spawn": "display-spawn",
               "performance-region-queue": "region-queue",
               "performance-region-keys": "region-keys",
+              "performance-layout": "layout",
               "performance-scheduler-reflection": "scheduler-reflection",
               "performance-ray-proxy": "ray-proxy",
           }

docs/performance-testing.md

@@ -57,6 +57,9 @@ and exactly one profile label to a pure performance PR:
   slots;
 - `performance-region-keys` - all 452 dynamic keys requested while planning one complete
   table refresh, with exact text, order, uniqueness and checksum sentinels outside timing;
+- `performance-layout` - complete RIICHI, GB and SICHUAN started-table
+  `TableRenderLayout.precompute` calls covering four occupied seats, hands, discards, melds,
+  sticks, each variant's full wall capacity and RIICHI dora;
 - `performance-scheduler-reflection` - representative global, region and entity scheduling
   bursts through both Folia-style reflective capabilities and standard Paper fallbacks;
 - `performance-ray-proxy` - 1, 4 and 32-viewer coordinator lifecycle and unchanged-geometry

perf/ab/gate-config.json

@@ -152,6 +152,26 @@
         "top/ellan/mahjong/table/render/TableRegionDisplayCoordinator.class"
       ]
     },
+    "layout": {
+      "include": "^top\\.ellan\\.mahjong\\.perf\\.TableRenderLayoutBenchmark\\.precomputeComplete(?:Riichi|Gb|Sichuan)Table$",
+      "benchmark_ids": [
+        "layout.riichi.time",
+        "layout.riichi.alloc",
+        "layout.gb.time",
+        "layout.gb.alloc",
+        "layout.sichuan.time",
+        "layout.sichuan.alloc"
+      ],
+      "minimum_passes": 3,
+      "must_pass": [
+        "layout.riichi.time",
+        "layout.gb.time",
+        "layout.sichuan.time"
+      ],
+      "required_classes": [
+        "top/ellan/mahjong/render/layout/TableRenderLayout.class"
+      ]
+    },
     "scheduler-reflection": {
       "include": "^top\\.ellan\\.mahjong\\.perf\\.ServerSchedulerReflectionBenchmark\\.schedule(?:Folia|Paper)Burst$",
       "benchmark_ids": [
@@ -334,6 +354,42 @@
       "metric": "gc.alloc.rate.norm",
       "direction": "lower"
     },
+    {
+      "id": "layout.riichi.time",
+      "benchmark": "top.ellan.mahjong.perf.TableRenderLayoutBenchmark.precomputeCompleteRiichiTable",
+      "metric": "primary",
+      "direction": "lower"
+    },
+    {
+      "id": "layout.riichi.alloc",
+      "benchmark": "top.ellan.mahjong.perf.TableRenderLayoutBenchmark.precomputeCompleteRiichiTable",
+      "metric": "gc.alloc.rate.norm",
+      "direction": "lower"
+    },
+    {
+      "id": "layout.gb.time",
+      "benchmark": "top.ellan.mahjong.perf.TableRenderLayoutBenchmark.precomputeCompleteGbTable",
+      "metric": "primary",
+      "direction": "lower"
+    },
+    {
+      "id": "layout.gb.alloc",
+      "benchmark": "top.ellan.mahjong.perf.TableRenderLayoutBenchmark.precomputeCompleteGbTable",
+      "metric": "gc.alloc.rate.norm",
+      "direction": "lower"
+    },
+    {
+      "id": "layout.sichuan.time",
+      "benchmark": "top.ellan.mahjong.perf.TableRenderLayoutBenchmark.precomputeCompleteSichuanTable",
+      "metric": "primary",
+      "direction": "lower"
+    },
+    {
+      "id": "layout.sichuan.alloc",
+      "benchmark": "top.ellan.mahjong.perf.TableRenderLayoutBenchmark.precomputeCompleteSichuanTable",
+      "metric": "gc.alloc.rate.norm",
+      "direction": "lower"
+    },
     {
       "id": "scheduler.folia.time",
       "benchmark": "top.ellan.mahjong.perf.ServerSchedulerReflectionBenchmark.scheduleFoliaBurst",