feat(stage-*): port artistry & chatbox enhancements (#1636)

Co-authored-by-agent: Unknown <unknown@example.com>

unresolved_utf8.json

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+[
+  {
+    "id": "PRRT_kwDONXX6d859HYhL",
+    "isResolved": false,
+    "comments": {
+      "nodes": [
+        {
+          "body": "**<sub><sub>![P2 Badge](https://img.shields.io/badge/P2-yellow?style=flat)</sub></sub>  Keep prefixed prompt from being overwritten by extra fields**\n\n`generate()` first writes `inputOptions.prompt` from `request.prompt` (which already includes card/global `promptPrefix`), but then immediately spreads `rest` from `request.extra` over it. In widget-triggered flows, `request.extra` includes the raw `componentProps.prompt`, so this overwrite drops the normalized/prefixed prompt and silently bypasses configured style prefixes for Replicate outputs. Preserve the computed prompt (or strip `prompt` from `rest`) before merging provider extras.\n\nUseful? React with 👍 / 👎.",
+          "author": {
+            "login": "chatgpt-codex-connector"
+          }
+        }
+      ]
+    }
+  }
+]