Add hide_missing_ids filter to transaction queries

- Add hide_missing_ids parameter to database functions to filter out transactions without internalTransactionId
- Update API routes to support the new filter parameter
- Update unit tests to include the new parameter
- Add opencode.json configuration file

opencode.json

@@ -0,0 +1,7 @@
+{
+  "$schema": "https://opencode.ai/config.json",
+  "permission": {
+    "edit": "ask",
+    "bash": "ask"
+  }
+}