feat(services): add OpenClaw branches to backend services

- Add OpenClaw branches to proxy service (not supported)
- Add OpenClaw to MCP service (skip sync, MCP still in development)
- Add OpenClaw skills directory path
- Update ProxyTakeoverStatus with openclaw field
- Add OpenClaw to stream check (not supported)

src-tauri/src/services/skill.rs

@@ -230,6 +230,11 @@ impl SkillService {
                     return Ok(custom.join("skills"));
                 }
             }
+            AppType::OpenClaw => {
+                if let Some(custom) = crate::settings::get_openclaw_override_dir() {
+                    return Ok(custom.join("skills"));
+                }
+            }
         }
 
         // 默认路径：回退到用户主目录下的标准位置
@@ -244,6 +249,7 @@ impl SkillService {
             AppType::Codex => home.join(".codex").join("skills"),
             AppType::Gemini => home.join(".gemini").join("skills"),
             AppType::OpenCode => home.join(".config").join("opencode").join("skills"),
+            AppType::OpenClaw => home.join(".openclaw").join("skills"),
         })
     }
 
@@ -562,6 +568,7 @@ impl SkillService {
                     AppType::Codex => "codex",
                     AppType::Gemini => "gemini",
                     AppType::OpenCode => "opencode",
+                    AppType::OpenClaw => "openclaw",
                 };
 
                 unmanaged
@@ -611,6 +618,7 @@ impl SkillService {
                             AppType::Codex => "codex",
                             AppType::Gemini => "gemini",
                             AppType::OpenCode => "opencode",
+                            AppType::OpenClaw => "openclaw",
                         };
                         found_in.push(app_str.to_string());
                     }