feat(backend): add icon fields to Provider model and default mappings

Extend Rust backend to support provider icon customization:

## Provider Model (src-tauri/src/provider.rs)
- Add `icon: Option<String>` field for icon name
- Add `icon_color: Option<String>` field for hex color
- Use serde rename `iconColor` for frontend compatibility
- Apply skip_serializing_if for clean JSON output
- Update Provider::new() to initialize icon fields as None

## Provider Defaults (src-tauri/src/provider_defaults.rs) [NEW]
- Define ProviderIcon struct with name and color fields
- Create DEFAULT_PROVIDER_ICONS static HashMap with 23 providers:
  - AI providers: OpenAI, Anthropic, Claude, Google, Gemini,
    DeepSeek, Kimi, Moonshot, Zhipu, MiniMax, Baidu, Alibaba,
    Tencent, Meta, Microsoft, Cohere, Perplexity, Mistral, HuggingFace
  - Cloud platforms: AWS, Azure, Huawei, Cloudflare
- Implement infer_provider_icon() with exact and fuzzy matching
- Add unit tests for matching logic (exact, fuzzy, case-insensitive)

## Deep Link Support (src-tauri/src/deeplink.rs)
- Initialize icon fields when creating Provider from deep link import

## Module Registration (src-tauri/src/lib.rs)
- Register provider_defaults module

## Dependencies (Cargo.toml)
- Add once_cell for lazy static initialization

This backend support enables icon persistence and future features
like auto-icon inference during provider creation.

src-tauri/Cargo.lock

@@ -616,6 +616,7 @@ dependencies = [
  "log",
  "objc2 0.5.2",
  "objc2-app-kit 0.2.2",
+ "once_cell",
  "regex",
  "reqwest",
  "rquickjs",

src-tauri/Cargo.toml

@@ -49,6 +49,7 @@ serde_yaml = "0.9"
 tempfile = "3"
 url = "2.5"
 auto-launch = "0.5"
+once_cell = "1.21.3"
 
 [target.'cfg(any(target_os = "macos", target_os = "windows", target_os = "linux"))'.dependencies]
 tauri-plugin-single-instance = "2"

src-tauri/src/deeplink.rs

@@ -319,6 +319,8 @@ requires_openai_auth = true
         sort_index: None,
         notes: request.notes.clone(),
         meta: None,
+        icon: None,
+        icon_color: None,
     };
 
     Ok(provider)

src-tauri/src/lib.rs

@@ -15,6 +15,7 @@ mod mcp;
 mod prompt;
 mod prompt_files;
 mod provider;
+mod provider_defaults;
 mod services;
 mod settings;
 mod store;

src-tauri/src/provider.rs

@@ -28,6 +28,13 @@ pub struct Provider {
     /// 供应商元数据（不写入 live 配置，仅存于 ~/.cc-switch/config.json）
     #[serde(skip_serializing_if = "Option::is_none")]
     pub meta: Option<ProviderMeta>,
+    /// 图标名称（如 "openai", "anthropic"）
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub icon: Option<String>,
+    /// 图标颜色（Hex 格式，如 "#00A67E"）
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "iconColor")]
+    pub icon_color: Option<String>,
 }
 
 impl Provider {
@@ -48,6 +55,8 @@ impl Provider {
             sort_index: None,
             notes: None,
             meta: None,
+            icon: None,
+            icon_color: None,
         }
     }
 }

src-tauri/src/provider_defaults.rs

@@ -0,0 +1,238 @@
+use once_cell::sync::Lazy;
+use std::collections::HashMap;
+
+/// 供应商图标信息
+#[derive(Debug, Clone)]
+#[allow(dead_code)]
+pub struct ProviderIcon {
+    pub name: &'static str,
+    pub color: &'static str,
+}
+
+/// 供应商名称到图标的默认映射
+#[allow(dead_code)]
+pub static DEFAULT_PROVIDER_ICONS: Lazy<HashMap<&'static str, ProviderIcon>> = Lazy::new(|| {
+    let mut m = HashMap::new();
+
+    // AI 服务商
+    m.insert(
+        "openai",
+        ProviderIcon {
+            name: "openai",
+            color: "#00A67E",
+        },
+    );
+    m.insert(
+        "anthropic",
+        ProviderIcon {
+            name: "anthropic",
+            color: "#D4915D",
+        },
+    );
+    m.insert(
+        "claude",
+        ProviderIcon {
+            name: "claude",
+            color: "#D4915D",
+        },
+    );
+    m.insert(
+        "google",
+        ProviderIcon {
+            name: "google",
+            color: "#4285F4",
+        },
+    );
+    m.insert(
+        "gemini",
+        ProviderIcon {
+            name: "gemini",
+            color: "#4285F4",
+        },
+    );
+    m.insert(
+        "deepseek",
+        ProviderIcon {
+            name: "deepseek",
+            color: "#1E88E5",
+        },
+    );
+    m.insert(
+        "kimi",
+        ProviderIcon {
+            name: "kimi",
+            color: "#6366F1",
+        },
+    );
+    m.insert(
+        "moonshot",
+        ProviderIcon {
+            name: "moonshot",
+            color: "#6366F1",
+        },
+    );
+    m.insert(
+        "zhipu",
+        ProviderIcon {
+            name: "zhipu",
+            color: "#0F62FE",
+        },
+    );
+    m.insert(
+        "minimax",
+        ProviderIcon {
+            name: "minimax",
+            color: "#FF6B6B",
+        },
+    );
+    m.insert(
+        "baidu",
+        ProviderIcon {
+            name: "baidu",
+            color: "#2932E1",
+        },
+    );
+    m.insert(
+        "alibaba",
+        ProviderIcon {
+            name: "alibaba",
+            color: "#FF6A00",
+        },
+    );
+    m.insert(
+        "tencent",
+        ProviderIcon {
+            name: "tencent",
+            color: "#00A4FF",
+        },
+    );
+    m.insert(
+        "meta",
+        ProviderIcon {
+            name: "meta",
+            color: "#0081FB",
+        },
+    );
+    m.insert(
+        "microsoft",
+        ProviderIcon {
+            name: "microsoft",
+            color: "#00A4EF",
+        },
+    );
+    m.insert(
+        "cohere",
+        ProviderIcon {
+            name: "cohere",
+            color: "#39594D",
+        },
+    );
+    m.insert(
+        "perplexity",
+        ProviderIcon {
+            name: "perplexity",
+            color: "#20808D",
+        },
+    );
+    m.insert(
+        "mistral",
+        ProviderIcon {
+            name: "mistral",
+            color: "#FF7000",
+        },
+    );
+    m.insert(
+        "huggingface",
+        ProviderIcon {
+            name: "huggingface",
+            color: "#FFD21E",
+        },
+    );
+
+    // 云平台
+    m.insert(
+        "aws",
+        ProviderIcon {
+            name: "aws",
+            color: "#FF9900",
+        },
+    );
+    m.insert(
+        "azure",
+        ProviderIcon {
+            name: "azure",
+            color: "#0078D4",
+        },
+    );
+    m.insert(
+        "huawei",
+        ProviderIcon {
+            name: "huawei",
+            color: "#FF0000",
+        },
+    );
+    m.insert(
+        "cloudflare",
+        ProviderIcon {
+            name: "cloudflare",
+            color: "#F38020",
+        },
+    );
+
+    m
+});
+
+/// 根据供应商名称智能推断图标
+#[allow(dead_code)]
+pub fn infer_provider_icon(provider_name: &str) -> Option<ProviderIcon> {
+    let name_lower = provider_name.to_lowercase();
+
+    // 精确匹配
+    if let Some(icon) = DEFAULT_PROVIDER_ICONS.get(name_lower.as_str()) {
+        return Some(icon.clone());
+    }
+
+    // 模糊匹配（包含关键词）
+    for (key, icon) in DEFAULT_PROVIDER_ICONS.iter() {
+        if name_lower.contains(key) {
+            return Some(icon.clone());
+        }
+    }
+
+    None
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_exact_match() {
+        let icon = infer_provider_icon("openai");
+        assert!(icon.is_some());
+        let icon = icon.unwrap();
+        assert_eq!(icon.name, "openai");
+        assert_eq!(icon.color, "#00A67E");
+    }
+
+    #[test]
+    fn test_fuzzy_match() {
+        let icon = infer_provider_icon("OpenAI Official");
+        assert!(icon.is_some());
+        let icon = icon.unwrap();
+        assert_eq!(icon.name, "openai");
+    }
+
+    #[test]
+    fn test_case_insensitive() {
+        let icon = infer_provider_icon("ANTHROPIC");
+        assert!(icon.is_some());
+        assert_eq!(icon.unwrap().name, "anthropic");
+    }
+
+    #[test]
+    fn test_no_match() {
+        let icon = infer_provider_icon("unknown provider");
+        assert!(icon.is_none());
+    }
+}

src-tauri/src/services/skill.rs

@@ -450,7 +450,9 @@ impl SkillService {
         // 根据 skills_path 确定源目录路径
         let source = if let Some(ref skills_path) = repo.skills_path {
             // 如果指定了 skills_path，源路径为: temp_dir/skills_path/directory
-            temp_dir.join(skills_path.trim_matches('/')).join(&directory)
+            temp_dir
+                .join(skills_path.trim_matches('/'))
+                .join(&directory)
         } else {
             // 否则源路径为: temp_dir/directory
             temp_dir.join(&directory)
@@ -458,10 +460,7 @@ impl SkillService {
 
         if !source.exists() {
             let _ = fs::remove_dir_all(&temp_dir);
-            return Err(anyhow::anyhow!(
+            return Err(anyhow::anyhow!("技能目录不存在: {}", source.display()));
-                "技能目录不存在: {}",
-                source.display()
-            ));
         }
 
         // 删除旧版本