收束promotion候选证据

结论：按text22铁律完成promotion-candidates双层证据管理，baseline保持28/28/131/0，Python remap、tool DB、external user-M hard block继续locked。

wasm-port/tests/fixtures/project-release-readiness-ready.json

@@ -712,6 +712,45 @@
       "ready": true
     }
   ],
+  "promotionCandidateArtifactSummary": {
+    "apiName": "project-release-promotion-candidate-artifact-summary",
+    "summaryVersion": 1,
+    "phase": "ready",
+    "ready": true,
+    "artifactPath": "wasm-port/build/wasm/sim-configs-inventory/promotion-candidates.tsv",
+    "evidenceExpansionArtifactPath": "wasm-port/build/wasm/sim-configs-inventory/evidence-expansion-candidates.tsv",
+    "layerCount": 2,
+    "evidenceReadyCount": 8,
+    "inventoryReadyCount": 20,
+    "evidenceExpansionCandidateCount": 13,
+    "totalCandidateCount": 28,
+    "promotionAllowedCount": 0,
+    "hardBlockRuntimeLock": "locked (3 families)",
+    "inventoryBaseline": "executed=28 passed=28 skipped=131 unexpected_fail=0",
+    "layers": [
+      {
+        "id": "evidence-ready",
+        "candidateCount": 8,
+        "promotionAllowedCount": 0,
+        "virtualHalEvidenceReady": true,
+        "baselineChanging": false
+      },
+      {
+        "id": "inventory-ready",
+        "candidateCount": 20,
+        "promotionAllowedCount": 0,
+        "virtualHalEvidenceReady": false,
+        "baselineChanging": false
+      }
+    ],
+    "evidenceExpansion": {
+      "id": "browser-diagnostics-expansion",
+      "candidateCount": 13,
+      "promotionAllowedCount": 0,
+      "baselineChanging": false,
+      "nextEvidence": "browser-diagnostics-binding"
+    }
+  },
   "virtualHalSimConfigMacroLoadFixtures": {
     "apiName": "linuxcnc-wasm-virtual-hal-sim-config-macro-load-fixture-report",
     "reportVersion": 1,
@@ -2288,6 +2327,36 @@
       "label": "Virtual HAL sim-config promotion candidates",
       "value": "ready"
     },
+    {
+      "id": "promotion-candidate-artifact",
+      "label": "Promotion candidate artifact",
+      "value": "wasm-port/build/wasm/sim-configs-inventory/promotion-candidates.tsv"
+    },
+    {
+      "id": "promotion-candidate-layers",
+      "label": "Promotion candidate layers",
+      "value": "evidence-ready=8 inventory-ready=20"
+    },
+    {
+      "id": "promotion-candidate-total",
+      "label": "Promotion candidate total",
+      "value": "28"
+    },
+    {
+      "id": "evidence-expansion-candidates",
+      "label": "Evidence expansion candidates",
+      "value": "13"
+    },
+    {
+      "id": "evidence-expansion-artifact",
+      "label": "Evidence expansion artifact",
+      "value": "wasm-port/build/wasm/sim-configs-inventory/evidence-expansion-candidates.tsv"
+    },
+    {
+      "id": "promotion-candidate-allowed",
+      "label": "Promotion candidates allowed",
+      "value": "0"
+    },
     {
       "id": "virtual-hal-promotion-families",
       "label": "Virtual HAL promotion families",