Add remote skill scope/product_surface/enabled params and cleanup (#11801)

skills/remote/list: params=hazelnutScope, productSurface, enabled;
returns=data: { id, name, description }[]
skills/remote/export: params=hazelnutId; returns={ id, path }

codex-rs/protocol/src/protocol.rs

@@ -285,13 +285,14 @@ pub enum Op {
     },
 
     /// Request the list of remote skills available via ChatGPT sharing.
-    ListRemoteSkills,
+    ListRemoteSkills {
+        hazelnut_scope: RemoteSkillHazelnutScope,
+        product_surface: RemoteSkillProductSurface,
+        enabled: Option<bool>,
+    },
 
     /// Download a remote skill by id into the local skills cache.
-    DownloadRemoteSkill {
-        hazelnut_id: String,
-        is_preload: bool,
-    },
+    DownloadRemoteSkill { hazelnut_id: String },
 
     /// Request the agent to summarize the current conversation context.
     /// The agent will use its existing context (either conversation history or previous response id)
@@ -2422,6 +2423,26 @@ pub struct RemoteSkillSummary {
     pub description: String,
 }
 
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, JsonSchema, TS)]
+#[serde(rename_all = "kebab-case")]
+#[ts(rename_all = "kebab-case")]
+pub enum RemoteSkillHazelnutScope {
+    WorkspaceShared,
+    AllShared,
+    Personal,
+    Example,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, JsonSchema, TS)]
+#[serde(rename_all = "lowercase")]
+#[ts(rename_all = "lowercase")]
+pub enum RemoteSkillProductSurface {
+    Chatgpt,
+    Codex,
+    Api,
+    Atlas,
+}
+
 /// Response payload for `Op::ListRemoteSkills`.
 #[derive(Debug, Clone, Deserialize, Serialize, JsonSchema, TS)]
 pub struct ListRemoteSkillsResponseEvent {