feat: add official Codex skill and harden task execution

Install and update artemis-use with task diagnostics and plugin guidance. Preserve cross-device file receipts, review canonical reports, guard stage transitions and reduce small history summaries. Improve exploration lifecycle, request recovery and browser live connections.

artemis/plugins/runtime.py

@@ -567,14 +567,16 @@ class PluginRuntime:
 
     @staticmethod
     def content_blocks(outcome: PluginCallResult) -> list[dict]:
-        from artemis.plugins.prompt_budget import bounded_result_text
+        from artemis.plugins.delivery import result_blocks
 
         text = outcome.text()
         # Explicit paged reads already have a fixed page size and must not
         # be clipped a second time (which would leave gaps between pages).
-        if outcome.plugin_id:
-            text = bounded_result_text(text, call_id=outcome.text_ref)
-        blocks: list[dict] = [{"type": "text", "text": text}]
+        blocks: list[dict] = (
+            result_blocks(text, call_id=outcome.text_ref, attachments=outcome.attachments)
+            if outcome.plugin_id
+            else [{"type": "text", "text": text}]
+        )
         for block in outcome.content:
             if block.get("type") == "image" and block.get("mimeType") in {
                 "image/png",