fix(schema): add no-hephaestus-non-gpt and disable_omo_env configuration options

- Add no-hephaestus-non-gpt to hook list for schema validation
- Add disable_omo_env to experimental features schema
- Sync schema with existing hook and feature implementations

🤖 Generated with assistance of [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

assets/oh-my-opencode.schema.json

@@ -92,6 +92,7 @@
           "prometheus-md-only",
           "sisyphus-junior-notepad",
           "no-sisyphus-gpt",
+          "no-hephaestus-non-gpt",
           "start-work",
           "atlas",
           "unstable-agent-babysitter",
@@ -3138,6 +3139,9 @@
         "safe_hook_creation": {
           "type": "boolean"
         },
+        "disable_omo_env": {
+          "type": "boolean"
+        },
         "hashline_edit": {
           "type": "boolean"
         }