feat(settings): configure Jev evaluation and model transitions

apps/desktop/assets/codex-bridge/jev-settings-defaults.json

@@ -0,0 +1,22 @@
+{
+  "enabled": true,
+  "endpoint": "https://api.typesafe.ai/v1/systemone",
+  "model": "jev-1.13.0",
+  "fallbackModel": "Katman-1",
+  "rejectionRules": [
+    { "from": "Katman-1", "to": "Katman-2" },
+    { "from": "Katman-2", "to": "Katman-3" },
+    { "from": "Katman-3", "to": "Katman-4" }
+  ],
+  "exemptModels": ["Sesli-Hizli-Zeki", "Katman-4"],
+  "thresholds": { "ret": 0.5, "sart": 0.7 },
+  "questions": {
+    "ret": "The assistant did NOT do what the user asked or did NOT answer the user's question: it refused, declined, said it cannot or will not, avoided giving the requested judgment, or redirected to a different topic.",
+    "sart": "The assistant changed the request on its own: it added its own conditions, softened or relabeled what was asked, or left part of it out, instead of doing exactly what the user asked."
+  },
+  "timeoutSeconds": 3600,
+  "criteria": { "ret": { "true": "", "false": "" }, "sart": { "true": "", "false": "" } },
+  "maxConcurrent": 0,
+  "queueWaitSeconds": 3600,
+  "failureAction": "pass"
+}