chore(docs): add wrangler.jsonc with observability config

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: jkyberneees

docs/wrangler.jsonc

@@ -0,0 +1,17 @@
+{
+  "observability": {
+    "enabled": false,
+    "head_sampling_rate": 1,
+    "logs": {
+      "enabled": true,
+      "head_sampling_rate": 1,
+      "persist": true,
+      "invocation_logs": true
+    },
+    "traces": {
+      "enabled": false,
+      "persist": true,
+      "head_sampling_rate": 1
+    }
+  }
+}