perf(scenario-scheduler): parallelize stale-run cleanup on startup with effect

- use Effect.forEach with concurrency:10 to fail up to 10 runs in parallel
- isolate each failRun with catchAll so one failure doesn't abort the rest
- log unexpected failRun errors per run without halting the batch

package-lock.json

@@ -3979,7 +3979,6 @@
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       "resolved": "https://registry.npmjs.org/@standard-schema/spec/-/spec-1.1.0.tgz",
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-      "dev": true,
       "license": "MIT"
     },
     "node_modules/@storybook/addon-a11y": {
@@ -7219,6 +7218,16 @@
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       "license": "MIT"
     },
+    "node_modules/effect": {
+      "version": "3.21.0",
+      "resolved": "https://registry.npmjs.org/effect/-/effect-3.21.0.tgz",
+      "integrity": "sha512-PPN80qRokCd1f015IANNhrwOnLO7GrrMQfk4/lnZRE/8j7UPWrNNjPV0uBrZutI/nHzernbW+J0hdqQysHiSnQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@standard-schema/spec": "^1.0.0",
+        "fast-check": "^3.23.1"
+      }
+    },
     "node_modules/electron-to-chromium": {
       "version": "1.5.332",
       "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.5.332.tgz",
@@ -8118,6 +8127,44 @@
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       "license": "MIT"
     },
+    "node_modules/fast-check": {
+      "version": "3.23.2",
+      "resolved": "https://registry.npmjs.org/fast-check/-/fast-check-3.23.2.tgz",
+      "integrity": "sha512-h5+1OzzfCC3Ef7VbtKdcv7zsstUQwUDlYpUTvjeUsJAssPgLn7QzbboPtL5ro04Mq0rPOsMzl7q5hIbRs2wD1A==",
+      "funding": [
+        {
+          "type": "individual",
+          "url": "https://github.com/sponsors/dubzzz"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/fast-check"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "pure-rand": "^6.1.0"
+      },
+      "engines": {
+        "node": ">=8.0.0"
+      }
+    },
+    "node_modules/fast-check/node_modules/pure-rand": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/pure-rand/-/pure-rand-6.1.0.tgz",
+      "integrity": "sha512-bVWawvoZoBYpp6yIoQtQXHZjmz35RSVHnUOTefl8Vcjr8snTPY1wnpSPMWekcFwbxI6gtmT7rSYPFvz71ldiOA==",
+      "funding": [
+        {
+          "type": "individual",
+          "url": "https://github.com/sponsors/dubzzz"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/fast-check"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/fast-deep-equal": {
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
@@ -15987,6 +16034,7 @@
         "better-sqlite3": "^12.8.0",
         "class-transformer": "^0.5.1",
         "class-validator": "^0.14.4",
+        "effect": "^3.21.0",
         "jsdom": "^29.0.2",
         "playwright": "^1.59.1",
         "reflect-metadata": "^0.2.2",