Add Codex happy path prompt snapshots (#75807)

* Add Codex prompt snapshots

* Fix prompt snapshot scenario catalogs

* Harden prompt snapshot drift check

* Fix CLI compat build export

* fix: keep codex snapshots out of core plugin surface

* fix: harden prompt snapshot ci checks

* fix: accept readonly web search onboarding scopes

* fix: repair plugin sdk package boundary types

* fix: clear prompt snapshot ci regressions

* fix: clear latest main ci checks

* fix: resolve latest main discord helper overlap

* fix: refresh codex dynamic tool snapshots

* fix: align prompt snapshot branch with latest ci

* fix: isolate plugin auto enable tests

* test: refresh prompt dynamic tool snapshots

* fix: stabilize bundled channel auto enable

* fix: clean stale prompt snapshots

extensions/google/embedding-provider.ts

@@ -54,6 +54,7 @@ type GeminiInlinePart = {
   inlineData: { mimeType: string; data: string };
 };
 type GeminiPart = GeminiTextPart | GeminiInlinePart;
+type GeminiEmbeddingInputPart = NonNullable<EmbeddingInput["parts"]>[number];
 type GeminiEmbeddingRequest = {
   content: { parts: GeminiPart[] };
   taskType: GeminiTaskType;
@@ -85,7 +86,7 @@ export function buildGeminiEmbeddingRequest(params: {
 }): GeminiEmbeddingRequest {
   const request: GeminiEmbeddingRequest = {
     content: {
-      parts: params.input.parts?.map((part) =>
+      parts: params.input.parts?.map((part: GeminiEmbeddingInputPart) =>
         part.type === "text"
           ? ({ text: part.text } satisfies GeminiTextPart)
           : ({