feat: complete remaining Go backend modules

contracts/logs/runtime-v1.json

@@ -0,0 +1,16 @@
+{
+  "version": 1,
+  "fileName": "server-events.jsonl",
+  "rotatedSuffix": ".1",
+  "defaultLimit": 100,
+  "minimumLimit": 1,
+  "maximumLimit": 500,
+  "maximumTextLength": 20000,
+  "maximumDepth": 5,
+  "maximumArrayItems": 50,
+  "maximumObjectKeys": 80,
+  "corruptLines": "skip",
+  "order": "newest-first",
+  "redactedValue": "[redacted]",
+  "redactedJwt": "[jwt-redacted]"
+}