chore: regenerate schema JSON with image_routing field

oh-my-opencode-slim.schema.json

@@ -195,6 +195,14 @@
         "type": "string"
       }
     },
+    "image_routing": {
+      "description": "How image/PDF attachments are handled. \"direct\" (default): pass attachments to the orchestrator untouched; @observer stays available for manual delegation. \"auto\": save attachments to disk and nudge the orchestrator to delegate to @observer. Requires observer to be enabled (not in disabled_agents).",
+      "type": "string",
+      "enum": [
+        "auto",
+        "direct"
+      ]
+    },
     "disabled_mcps": {
       "type": "array",
       "items": {