fix: improve GitHub API error handling for plugin repo upload

Handle cases where the repository has no releases by checking HTTP status
before parsing the response body. Provides clear error messages instead of
cryptic "missing field 'assets'" deserialization errors.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: neckaros

src/tools/http_tools.rs

@@ -4,6 +4,7 @@ use mime_guess::MimeGuess;
 use nanoid::nanoid;
 use reqwest::Client;
 use serde::Deserialize;
+use serde_json;
 use tokio::{fs::{self, File}, io::AsyncWriteExt};
 
 use crate::{error::RsResult, tools::file_tools::get_extension_from_mime};
@@ -46,6 +47,11 @@ pub struct GithubRelease {
     assets: Vec<GithubAsset>,
 }
 
+#[derive(Deserialize, Debug)]
+pub struct GithubError {
+    message: String,
+}
+
 #[derive(Deserialize, Debug)]
 pub struct GithubAsset {
     name: String,
@@ -78,14 +84,25 @@ pub async fn download_latest_wasm(repo_url: &str, download_dir: &str, filename:
         .user_agent("RedseatRustApp/1.0")  // Required by GitHub API
         .build()?;
     let api_url = format!("https://api.github.com/repos/{}/{}/releases/latest", owner, repo);
-    let release: GithubRelease = client
+    let response = client
         .get(&api_url)
         .header("Accept", "application/vnd.github.v3+json")
         .send()
-        .await?
-        .json()
         .await?;
 
+    let status = response.status();
+    let body = response.text().await?;
+
+    if !status.is_success() {
+        let error_msg = serde_json::from_str::<GithubError>(&body)
+            .map(|e| e.message)
+            .unwrap_or_else(|_| body.clone());
+        return Err(crate::error::Error::Error(format!("GitHub API error ({}): {}", status, error_msg)));
+    }
+
+    let release: GithubRelease = serde_json::from_str(&body)
+        .map_err(|e| crate::error::Error::Error(format!("Failed to parse GitHub release: {}. The repository may not have any releases.", e)))?;
+
     // Step 2: Find first .wasm asset
     let wasm_asset = release.assets.iter()
         .find(|asset| asset.name.ends_with(".wasm"))