fix: read both .env and settings.json for Gemini live config

Previously, when editing a Gemini provider, only the .env file was read,
missing the settings.json file that contains MCP configuration and other
settings. This caused the config field in the edit form to be empty or
show outdated data.

This fix ensures both files are read and merged into the complete
structure { "env": {...}, "config": {...} }, matching the behavior
of Codex provider.

Fixed in:
- read_live_settings(): now reads both .env and settings.json
- import_default_config(): now reads both files when importing

src-tauri/src/services/provider.rs

@@ -847,19 +847,40 @@ impl ProviderService {
                 v
             }
             AppType::Gemini => {
-                // 新增
-                use crate::gemini_config::{env_to_json, get_gemini_env_path, read_gemini_env};
+                use crate::gemini_config::{
+                    env_to_json, get_gemini_env_path, get_gemini_settings_path, read_gemini_env,
+                };
 
-                let path = get_gemini_env_path();
-                if !path.exists() {
+                // 读取 .env 文件（环境变量）
+                let env_path = get_gemini_env_path();
+                if !env_path.exists() {
                     return Err(AppError::localized(
                         "gemini.live.missing",
                         "Gemini 配置文件不存在",
                         "Gemini configuration file is missing",
                     ));
                 }
+
                 let env_map = read_gemini_env()?;
-                env_to_json(&env_map)
+                let env_json = env_to_json(&env_map);
+                let env_obj = env_json
+                    .get("env")
+                    .cloned()
+                    .unwrap_or_else(|| json!({}));
+
+                // 读取 settings.json 文件（MCP 配置等）
+                let settings_path = get_gemini_settings_path();
+                let config_obj = if settings_path.exists() {
+                    read_json_file(&settings_path)?
+                } else {
+                    json!({})
+                };
+
+                // 返回完整结构：{ "env": {...}, "config": {...} }
+                json!({
+                    "env": env_obj,
+                    "config": config_obj
+                })
             }
         };
 
@@ -914,11 +935,13 @@ impl ProviderService {
                 read_json_file(&path)
             }
             AppType::Gemini => {
-                // 新增
-                use crate::gemini_config::{env_to_json, get_gemini_env_path, read_gemini_env};
+                use crate::gemini_config::{
+                    env_to_json, get_gemini_env_path, get_gemini_settings_path, read_gemini_env,
+                };
 
-                let path = get_gemini_env_path();
-                if !path.exists() {
+                // 读取 .env 文件（环境变量）
+                let env_path = get_gemini_env_path();
+                if !env_path.exists() {
                     return Err(AppError::localized(
                         "gemini.env.missing",
                         "Gemini .env 文件不存在",
@@ -927,7 +950,25 @@ impl ProviderService {
                 }
 
                 let env_map = read_gemini_env()?;
-                Ok(env_to_json(&env_map))
+                let env_json = env_to_json(&env_map);
+                let env_obj = env_json
+                    .get("env")
+                    .cloned()
+                    .unwrap_or_else(|| json!({}));
+
+                // 读取 settings.json 文件（MCP 配置等）
+                let settings_path = get_gemini_settings_path();
+                let config_obj = if settings_path.exists() {
+                    read_json_file(&settings_path)?
+                } else {
+                    json!({})
+                };
+
+                // 返回完整结构：{ "env": {...}, "config": {...} }
+                Ok(json!({
+                    "env": env_obj,
+                    "config": config_obj
+                }))
             }
         }
     }