feat: add Universal Provider feature (#348)

* feat: add Universal Provider feature

- Add Universal Provider data structures and type definitions
- Implement backend CRUD operations and sync functionality
- Add frontend UI components (UniversalProviderPanel, Card, FormModal)
- Add NewAPI icon and preset configuration
- Support cross-app (Claude/Codex/Gemini) configuration sync
- Add website URL field for providers
- Implement real-time refresh via event notifications
- Add i18n support (Chinese/English/Japanese)

* feat: integrate universal provider presets into add provider dialog

- Add universal provider presets (NewAPI, Custom Gateway) to preset selector
- Show universal presets with Layers icon badge in preset selector
- Open UniversalProviderFormModal when universal preset is clicked
- Pass initialPreset to auto-fill form when opened from add dialog
- Add i18n keys for addSuccess/addFailed messages
- Keep separate universal provider panel for management

* refactor: move universal provider management to add dialog

- Remove Layers button from main navigation header
- Add 'Manage' button next to universal provider presets
- Open UniversalProviderPanel from within add provider dialog
- Add i18n keys for 'manage' in all locales

* style: display universal provider presets on separate line

- Move universal provider section to a new row with border separator
- Add label '统一供应商:' to clarify the section

* style: unify universal provider label style with preset label

- Use FormLabel component for consistent styling
- Add background to 'Manage' button matching preset buttons
- Update icon size and button padding for consistency

* feat: add sync functionality and JSON preview for Universal Provider

* fix: add missing in_failover_queue field to Provider structs

After rebasing to main, the Provider struct gained a new
`in_failover_queue` field. This fix adds the missing field
to the three to_*_provider() methods in UniversalProvider.

* refactor: redesign AddProviderDialog with tab-based layout

- Add tabs to separate app-specific providers and universal providers
- Move "Add Universal Provider" button from panel header to footer
- Remove unused handleAdd callback and clean up imports
- Update emptyHint i18n text to reference the footer button

* fix: append /v1 suffix to Codex base_url in Universal Provider

Codex uses OpenAI-compatible API which requires the /v1 endpoint suffix.
The Universal Provider now automatically appends /v1 to base_url when
generating Codex provider config if not already present.

- Handle trailing slashes to avoid double slashes
- Apply fix to both backend (to_codex_provider) and frontend preview

* feat: auto-sync universal provider to apps on creation

Previously, users had to manually click sync after adding a universal
provider. Now it automatically syncs to Claude/Codex/Gemini on creation,
providing a smoother user experience.

---------

Co-authored-by: Jason <farion1231@gmail.com>

src-tauri/src/commands/provider.rs

@@ -229,3 +229,97 @@ pub fn update_providers_sort_order(
     let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
     ProviderService::update_sort_order(state.inner(), app_type, updates).map_err(|e| e.to_string())
 }
+
+// ============================================================================
+// 统一供应商（Universal Provider）命令
+// ============================================================================
+
+use crate::provider::UniversalProvider;
+use std::collections::HashMap;
+use tauri::{AppHandle, Emitter};
+
+/// 统一供应商同步完成事件的 payload
+#[derive(Clone, serde::Serialize)]
+pub struct UniversalProviderSyncedEvent {
+    /// 操作类型: "upsert" | "delete" | "sync"
+    pub action: String,
+    /// 统一供应商 ID
+    pub id: String,
+}
+
+/// 发送统一供应商同步事件，通知前端刷新供应商列表
+fn emit_universal_provider_synced(app: &AppHandle, action: &str, id: &str) {
+    let _ = app.emit(
+        "universal-provider-synced",
+        UniversalProviderSyncedEvent {
+            action: action.to_string(),
+            id: id.to_string(),
+        },
+    );
+}
+
+/// 获取所有统一供应商
+#[tauri::command]
+pub fn get_universal_providers(
+    state: State<'_, AppState>,
+) -> Result<HashMap<String, UniversalProvider>, String> {
+    ProviderService::list_universal(state.inner()).map_err(|e| e.to_string())
+}
+
+/// 获取单个统一供应商
+#[tauri::command]
+pub fn get_universal_provider(
+    state: State<'_, AppState>,
+    id: String,
+) -> Result<Option<UniversalProvider>, String> {
+    ProviderService::get_universal(state.inner(), &id).map_err(|e| e.to_string())
+}
+
+/// 添加或更新统一供应商
+#[tauri::command]
+pub fn upsert_universal_provider(
+    app: AppHandle,
+    state: State<'_, AppState>,
+    provider: UniversalProvider,
+) -> Result<bool, String> {
+    let id = provider.id.clone();
+    let result =
+        ProviderService::upsert_universal(state.inner(), provider).map_err(|e| e.to_string())?;
+
+    // 发送事件通知前端刷新
+    emit_universal_provider_synced(&app, "upsert", &id);
+
+    Ok(result)
+}
+
+/// 删除统一供应商
+#[tauri::command]
+pub fn delete_universal_provider(
+    app: AppHandle,
+    state: State<'_, AppState>,
+    id: String,
+) -> Result<bool, String> {
+    let result =
+        ProviderService::delete_universal(state.inner(), &id).map_err(|e| e.to_string())?;
+
+    // 发送事件通知前端刷新
+    emit_universal_provider_synced(&app, "delete", &id);
+
+    Ok(result)
+}
+
+/// 同步统一供应商到各应用（手动触发）
+#[tauri::command]
+pub fn sync_universal_provider(
+    app: AppHandle,
+    state: State<'_, AppState>,
+    id: String,
+) -> Result<bool, String> {
+    let result =
+        ProviderService::sync_universal_to_apps(state.inner(), &id).map_err(|e| e.to_string())?;
+
+    // 发送事件通知前端刷新
+    emit_universal_provider_synced(&app, "sync", &id);
+
+    Ok(result)
+}

src-tauri/src/database/dao/mod.rs

@@ -10,6 +10,7 @@ pub mod proxy;
 pub mod settings;
 pub mod skills;
 pub mod stream_check;
+pub mod universal_providers;
 
 // 所有 DAO 方法都通过 Database impl 提供，无需单独导出
 // 导出 FailoverQueueItem 供外部使用

src-tauri/src/database/dao/universal_providers.rs

@@ -0,0 +1,75 @@
+//! 统一供应商 (Universal Provider) DAO
+//!
+//! 提供统一供应商的 CRUD 操作。
+
+use crate::database::{lock_conn, to_json_string, Database};
+use crate::error::AppError;
+use crate::provider::UniversalProvider;
+use std::collections::HashMap;
+
+/// 统一供应商的 Settings Key
+const UNIVERSAL_PROVIDERS_KEY: &str = "universal_providers";
+
+impl Database {
+    /// 获取所有统一供应商
+    pub fn get_all_universal_providers(&self) -> Result<HashMap<String, UniversalProvider>, AppError> {
+        let conn = lock_conn!(self.conn);
+        
+        let mut stmt = conn
+            .prepare("SELECT value FROM settings WHERE key = ?")
+            .map_err(|e| AppError::Database(e.to_string()))?;
+        
+        let result: Option<String> = stmt
+            .query_row([UNIVERSAL_PROVIDERS_KEY], |row| row.get(0))
+            .ok();
+        
+        match result {
+            Some(json) => {
+                serde_json::from_str(&json)
+                    .map_err(|e| AppError::Database(format!("解析统一供应商数据失败: {e}")))
+            }
+            None => Ok(HashMap::new()),
+        }
+    }
+
+    /// 获取单个统一供应商
+    pub fn get_universal_provider(&self, id: &str) -> Result<Option<UniversalProvider>, AppError> {
+        let providers = self.get_all_universal_providers()?;
+        Ok(providers.get(id).cloned())
+    }
+
+    /// 保存统一供应商（添加或更新）
+    pub fn save_universal_provider(&self, provider: &UniversalProvider) -> Result<(), AppError> {
+        let mut providers = self.get_all_universal_providers()?;
+        providers.insert(provider.id.clone(), provider.clone());
+        self.save_all_universal_providers(&providers)
+    }
+
+    /// 删除统一供应商
+    pub fn delete_universal_provider(&self, id: &str) -> Result<bool, AppError> {
+        let mut providers = self.get_all_universal_providers()?;
+        let existed = providers.remove(id).is_some();
+        if existed {
+            self.save_all_universal_providers(&providers)?;
+        }
+        Ok(existed)
+    }
+
+    /// 保存所有统一供应商（内部方法）
+    fn save_all_universal_providers(
+        &self,
+        providers: &HashMap<String, UniversalProvider>,
+    ) -> Result<(), AppError> {
+        let conn = lock_conn!(self.conn);
+        let json = to_json_string(providers)?;
+        
+        conn.execute(
+            "INSERT OR REPLACE INTO settings (key, value) VALUES (?, ?)",
+            [UNIVERSAL_PROVIDERS_KEY, &json],
+        )
+        .map_err(|e| AppError::Database(e.to_string()))?;
+        
+        Ok(())
+    }
+}
+

src-tauri/src/lib.rs

@@ -694,6 +694,12 @@ pub fn run() {
             commands::get_stream_check_config,
             commands::save_stream_check_config,
             commands::get_tool_versions,
+            // Universal Provider management
+            commands::get_universal_providers,
+            commands::get_universal_provider,
+            commands::upsert_universal_provider,
+            commands::delete_universal_provider,
+            commands::sync_universal_provider,
         ]);
 
     let app = builder

src-tauri/src/provider.rs

@@ -173,3 +173,286 @@ impl ProviderManager {
         &self.providers
     }
 }
+
+// ============================================================================
+// 统一供应商（Universal Provider）- 跨应用共享配置
+// ============================================================================
+
+/// 统一供应商的应用启用状态
+#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+pub struct UniversalProviderApps {
+    #[serde(default)]
+    pub claude: bool,
+    #[serde(default)]
+    pub codex: bool,
+    #[serde(default)]
+    pub gemini: bool,
+}
+
+/// Claude 模型配置
+#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+pub struct ClaudeModelConfig {
+    /// 主模型
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub model: Option<String>,
+    /// Haiku 默认模型
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "haikuModel")]
+    pub haiku_model: Option<String>,
+    /// Sonnet 默认模型
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "sonnetModel")]
+    pub sonnet_model: Option<String>,
+    /// Opus 默认模型
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "opusModel")]
+    pub opus_model: Option<String>,
+}
+
+/// Codex 模型配置
+#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+pub struct CodexModelConfig {
+    /// 模型名称
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub model: Option<String>,
+    /// 推理强度
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "reasoningEffort")]
+    pub reasoning_effort: Option<String>,
+}
+
+/// Gemini 模型配置
+#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+pub struct GeminiModelConfig {
+    /// 模型名称
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub model: Option<String>,
+}
+
+/// 各应用的模型配置
+#[derive(Debug, Clone, Serialize, Deserialize, Default)]
+pub struct UniversalProviderModels {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub claude: Option<ClaudeModelConfig>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub codex: Option<CodexModelConfig>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub gemini: Option<GeminiModelConfig>,
+}
+
+/// 统一供应商（跨应用共享配置）
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct UniversalProvider {
+    /// 唯一标识
+    pub id: String,
+    /// 供应商名称
+    pub name: String,
+    /// 供应商类型（如 "newapi", "custom"）
+    #[serde(rename = "providerType")]
+    pub provider_type: String,
+    /// 应用启用状态
+    pub apps: UniversalProviderApps,
+    /// API 基础地址
+    #[serde(rename = "baseUrl")]
+    pub base_url: String,
+    /// API 密钥
+    #[serde(rename = "apiKey")]
+    pub api_key: String,
+    /// 各应用的模型配置
+    #[serde(default)]
+    pub models: UniversalProviderModels,
+    /// 网站链接
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "websiteUrl")]
+    pub website_url: Option<String>,
+    /// 备注信息
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub notes: Option<String>,
+    /// 图标名称
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub icon: Option<String>,
+    /// 图标颜色
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "iconColor")]
+    pub icon_color: Option<String>,
+    /// 元数据
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub meta: Option<ProviderMeta>,
+    /// 创建时间戳
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "createdAt")]
+    pub created_at: Option<i64>,
+    /// 排序索引
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "sortIndex")]
+    pub sort_index: Option<usize>,
+}
+
+impl UniversalProvider {
+    /// 创建新的统一供应商
+    pub fn new(
+        id: String,
+        name: String,
+        provider_type: String,
+        base_url: String,
+        api_key: String,
+    ) -> Self {
+        Self {
+            id,
+            name,
+            provider_type,
+            apps: UniversalProviderApps::default(),
+            base_url,
+            api_key,
+            models: UniversalProviderModels::default(),
+            website_url: None,
+            notes: None,
+            icon: None,
+            icon_color: None,
+            meta: None,
+            created_at: Some(chrono::Utc::now().timestamp_millis()),
+            sort_index: None,
+        }
+    }
+
+    /// 生成 Claude 供应商配置
+    pub fn to_claude_provider(&self) -> Option<Provider> {
+        if !self.apps.claude {
+            return None;
+        }
+
+        let models = self.models.claude.as_ref();
+        let model = models
+            .and_then(|m| m.model.clone())
+            .unwrap_or_else(|| "claude-sonnet-4-20250514".to_string());
+        let haiku = models
+            .and_then(|m| m.haiku_model.clone())
+            .unwrap_or_else(|| model.clone());
+        let sonnet = models
+            .and_then(|m| m.sonnet_model.clone())
+            .unwrap_or_else(|| model.clone());
+        let opus = models
+            .and_then(|m| m.opus_model.clone())
+            .unwrap_or_else(|| model.clone());
+
+        let settings_config = serde_json::json!({
+            "env": {
+                "ANTHROPIC_BASE_URL": self.base_url,
+                "ANTHROPIC_AUTH_TOKEN": self.api_key,
+                "ANTHROPIC_MODEL": model,
+                "ANTHROPIC_DEFAULT_HAIKU_MODEL": haiku,
+                "ANTHROPIC_DEFAULT_SONNET_MODEL": sonnet,
+                "ANTHROPIC_DEFAULT_OPUS_MODEL": opus,
+            }
+        });
+
+        Some(Provider {
+            id: format!("universal-claude-{}", self.id),
+            name: self.name.clone(),
+            settings_config,
+            website_url: self.website_url.clone(),
+            category: Some("aggregator".to_string()),
+            created_at: self.created_at,
+            sort_index: self.sort_index,
+            notes: self.notes.clone(),
+            meta: self.meta.clone(),
+            icon: self.icon.clone(),
+            icon_color: self.icon_color.clone(),
+            in_failover_queue: false,
+        })
+    }
+
+    /// 生成 Codex 供应商配置
+    pub fn to_codex_provider(&self) -> Option<Provider> {
+        if !self.apps.codex {
+            return None;
+        }
+
+        let models = self.models.codex.as_ref();
+        let model = models
+            .and_then(|m| m.model.clone())
+            .unwrap_or_else(|| "gpt-4o".to_string());
+        let reasoning_effort = models
+            .and_then(|m| m.reasoning_effort.clone())
+            .unwrap_or_else(|| "high".to_string());
+
+        // 确保 base_url 以 /v1 结尾（Codex 使用 OpenAI 兼容 API）
+        let codex_base_url = if self.base_url.ends_with("/v1") {
+            self.base_url.clone()
+        } else {
+            format!("{}/v1", self.base_url.trim_end_matches('/'))
+        };
+
+        // 生成 Codex 的 config.toml 内容
+        let config_toml = format!(
+            r#"model_provider = "newapi"
+model = "{}"
+model_reasoning_effort = "{}"
+disable_response_storage = true
+
+[model_providers.newapi]
+name = "NewAPI"
+base_url = "{}"
+wire_api = "responses"
+requires_openai_auth = true"#,
+            model, reasoning_effort, codex_base_url
+        );
+
+        let settings_config = serde_json::json!({
+            "auth": {
+                "OPENAI_API_KEY": self.api_key
+            },
+            "config": config_toml
+        });
+
+        Some(Provider {
+            id: format!("universal-codex-{}", self.id),
+            name: self.name.clone(),
+            settings_config,
+            website_url: self.website_url.clone(),
+            category: Some("aggregator".to_string()),
+            created_at: self.created_at,
+            sort_index: self.sort_index,
+            notes: self.notes.clone(),
+            meta: self.meta.clone(),
+            icon: self.icon.clone(),
+            icon_color: self.icon_color.clone(),
+            in_failover_queue: false,
+        })
+    }
+
+    /// 生成 Gemini 供应商配置
+    pub fn to_gemini_provider(&self) -> Option<Provider> {
+        if !self.apps.gemini {
+            return None;
+        }
+
+        let models = self.models.gemini.as_ref();
+        let model = models
+            .and_then(|m| m.model.clone())
+            .unwrap_or_else(|| "gemini-2.5-pro".to_string());
+
+        let settings_config = serde_json::json!({
+            "env": {
+                "GOOGLE_GEMINI_BASE_URL": self.base_url,
+                "GEMINI_API_KEY": self.api_key,
+                "GEMINI_MODEL": model,
+            }
+        });
+
+        Some(Provider {
+            id: format!("universal-gemini-{}", self.id),
+            name: self.name.clone(),
+            settings_config,
+            website_url: self.website_url.clone(),
+            category: Some("aggregator".to_string()),
+            created_at: self.created_at,
+            sort_index: self.sort_index,
+            notes: self.notes.clone(),
+            meta: self.meta.clone(),
+            icon: self.icon.clone(),
+            icon_color: self.icon_color.clone(),
+            in_failover_queue: false,
+        })
+    }
+}

src-tauri/src/services/provider/mod.rs

@@ -690,3 +690,140 @@ pub struct ProviderSortUpdate {
     #[serde(rename = "sortIndex")]
     pub sort_index: usize,
 }
+
+// ============================================================================
+// 统一供应商（Universal Provider）服务方法
+// ============================================================================
+
+use crate::provider::UniversalProvider;
+use std::collections::HashMap;
+
+impl ProviderService {
+    /// 获取所有统一供应商
+    pub fn list_universal(
+        state: &AppState,
+    ) -> Result<HashMap<String, UniversalProvider>, AppError> {
+        state.db.get_all_universal_providers()
+    }
+
+    /// 获取单个统一供应商
+    pub fn get_universal(
+        state: &AppState,
+        id: &str,
+    ) -> Result<Option<UniversalProvider>, AppError> {
+        state.db.get_universal_provider(id)
+    }
+
+    /// 添加或更新统一供应商（不自动同步，需手动调用 sync_universal_to_apps）
+    pub fn upsert_universal(
+        state: &AppState,
+        provider: UniversalProvider,
+    ) -> Result<bool, AppError> {
+        // 保存统一供应商
+        state.db.save_universal_provider(&provider)?;
+
+        Ok(true)
+    }
+
+    /// 删除统一供应商
+    pub fn delete_universal(state: &AppState, id: &str) -> Result<bool, AppError> {
+        // 获取统一供应商（用于删除生成的子供应商）
+        let provider = state.db.get_universal_provider(id)?;
+
+        // 删除统一供应商
+        state.db.delete_universal_provider(id)?;
+
+        // 删除生成的子供应商
+        if let Some(p) = provider {
+            if p.apps.claude {
+                let claude_id = format!("universal-claude-{}", id);
+                let _ = state.db.delete_provider("claude", &claude_id);
+            }
+            if p.apps.codex {
+                let codex_id = format!("universal-codex-{}", id);
+                let _ = state.db.delete_provider("codex", &codex_id);
+            }
+            if p.apps.gemini {
+                let gemini_id = format!("universal-gemini-{}", id);
+                let _ = state.db.delete_provider("gemini", &gemini_id);
+            }
+        }
+
+        Ok(true)
+    }
+
+    /// 同步统一供应商到各应用
+    pub fn sync_universal_to_apps(state: &AppState, id: &str) -> Result<bool, AppError> {
+        let provider = state
+            .db
+            .get_universal_provider(id)?
+            .ok_or_else(|| AppError::Message(format!("统一供应商 {} 不存在", id)))?;
+
+        // 同步到 Claude
+        if let Some(mut claude_provider) = provider.to_claude_provider() {
+            // 合并已有配置
+            if let Some(existing) = state.db.get_provider_by_id(&claude_provider.id, "claude")? {
+                let mut merged = existing.settings_config.clone();
+                Self::merge_json(&mut merged, &claude_provider.settings_config);
+                claude_provider.settings_config = merged;
+            }
+            state.db.save_provider("claude", &claude_provider)?;
+        } else {
+            // 如果禁用了 Claude，删除对应的子供应商
+            let claude_id = format!("universal-claude-{}", id);
+            let _ = state.db.delete_provider("claude", &claude_id);
+        }
+
+        // 同步到 Codex
+        if let Some(mut codex_provider) = provider.to_codex_provider() {
+            // 合并已有配置
+            if let Some(existing) = state.db.get_provider_by_id(&codex_provider.id, "codex")? {
+                let mut merged = existing.settings_config.clone();
+                Self::merge_json(&mut merged, &codex_provider.settings_config);
+                codex_provider.settings_config = merged;
+            }
+            state.db.save_provider("codex", &codex_provider)?;
+        } else {
+            let codex_id = format!("universal-codex-{}", id);
+            let _ = state.db.delete_provider("codex", &codex_id);
+        }
+
+        // 同步到 Gemini
+        if let Some(mut gemini_provider) = provider.to_gemini_provider() {
+            // 合并已有配置
+            if let Some(existing) = state.db.get_provider_by_id(&gemini_provider.id, "gemini")? {
+                let mut merged = existing.settings_config.clone();
+                Self::merge_json(&mut merged, &gemini_provider.settings_config);
+                gemini_provider.settings_config = merged;
+            }
+            state.db.save_provider("gemini", &gemini_provider)?;
+        } else {
+            let gemini_id = format!("universal-gemini-{}", id);
+            let _ = state.db.delete_provider("gemini", &gemini_id);
+        }
+
+        Ok(true)
+    }
+
+    /// 递归合并 JSON：base 为底，patch 覆盖同名字段
+    fn merge_json(base: &mut serde_json::Value, patch: &serde_json::Value) {
+        use serde_json::Value;
+
+        match (base, patch) {
+            (Value::Object(base_map), Value::Object(patch_map)) => {
+                for (k, v_patch) in patch_map {
+                    match base_map.get_mut(k) {
+                        Some(v_base) => Self::merge_json(v_base, v_patch),
+                        None => {
+                            base_map.insert(k.clone(), v_patch.clone());
+                        }
+                    }
+                }
+            }
+            // 其它类型：直接覆盖
+            (base_val, patch_val) => {
+                *base_val = patch_val.clone();
+            }
+        }
+    }
+}