feat: 新增技能编排引擎和工作流构建器组件

refactor: 统一Hands系统常量到单个源文件
refactor: 更新Hands中文名称和描述

fix: 修复技能市场在连接状态变化时重新加载
fix: 修复身份变更提案的错误处理逻辑

docs: 更新多个功能文档的验证状态和实现位置
docs: 更新Hands系统文档

test: 添加测试文件验证工作区路径

crates/zclaw-kernel/src/config.rs

@@ -157,11 +157,98 @@ impl Default for KernelConfig {
     }
 }
 
-/// Default skills directory (./skills relative to cwd)
+/// Default skills directory
+///
+/// Discovery order:
+/// 1. ZCLAW_SKILLS_DIR environment variable (if set)
+/// 2. Compile-time known workspace path (CARGO_WORKSPACE_DIR or relative from manifest dir)
+/// 3. Current working directory/skills (for development)
+/// 4. Executable directory and multiple levels up (for packaged apps)
 fn default_skills_dir() -> Option<std::path::PathBuf> {
-    std::env::current_dir()
+    // 1. Check environment variable override
+    if let Ok(dir) = std::env::var("ZCLAW_SKILLS_DIR") {
+        let path = std::path::PathBuf::from(&dir);
+        eprintln!("[default_skills_dir] ZCLAW_SKILLS_DIR env: {} (exists: {})", path.display(), path.exists());
+        if path.exists() {
+            return Some(path);
+        }
+        // Even if it doesn't exist, respect the env var
+        return Some(path);
+    }
+
+    // 2. Try compile-time known paths (works for cargo build/test)
+    // CARGO_MANIFEST_DIR is the crate directory (crates/zclaw-kernel)
+    // We need to go up to find the workspace root
+    let manifest_dir = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+    eprintln!("[default_skills_dir] CARGO_MANIFEST_DIR: {}", manifest_dir.display());
+
+    // Go up from crates/zclaw-kernel to workspace root
+    if let Some(workspace_root) = manifest_dir.parent().and_then(|p| p.parent()) {
+        let workspace_skills = workspace_root.join("skills");
+        eprintln!("[default_skills_dir] Workspace skills: {} (exists: {})", workspace_skills.display(), workspace_skills.exists());
+        if workspace_skills.exists() {
+            return Some(workspace_skills);
+        }
+    }
+
+    // 3. Try current working directory first (for development)
+    if let Ok(cwd) = std::env::current_dir() {
+        let cwd_skills = cwd.join("skills");
+        eprintln!("[default_skills_dir] Checking cwd: {} (exists: {})", cwd_skills.display(), cwd_skills.exists());
+        if cwd_skills.exists() {
+            return Some(cwd_skills);
+        }
+
+        // Also try going up from cwd (might be in desktop/src-tauri)
+        let mut current = cwd.as_path();
+        for i in 0..6 {
+            if let Some(parent) = current.parent() {
+                let parent_skills = parent.join("skills");
+                eprintln!("[default_skills_dir] CWD Level {}: {} (exists: {})", i, parent_skills.display(), parent_skills.exists());
+                if parent_skills.exists() {
+                    return Some(parent_skills);
+                }
+                current = parent;
+            } else {
+                break;
+            }
+        }
+    }
+
+    // 4. Try executable's directory and multiple levels up
+    if let Ok(exe) = std::env::current_exe() {
+        eprintln!("[default_skills_dir] Current exe: {}", exe.display());
+        if let Some(exe_dir) = exe.parent().map(|p| p.to_path_buf()) {
+            // Same directory as exe
+            let exe_skills = exe_dir.join("skills");
+            eprintln!("[default_skills_dir] Checking exe dir: {} (exists: {})", exe_skills.display(), exe_skills.exists());
+            if exe_skills.exists() {
+                return Some(exe_skills);
+            }
+
+            // Go up multiple levels to handle Tauri dev builds
+            let mut current = exe_dir.as_path();
+            for i in 0..6 {
+                if let Some(parent) = current.parent() {
+                    let parent_skills = parent.join("skills");
+                    eprintln!("[default_skills_dir] EXE Level {}: {} (exists: {})", i, parent_skills.display(), parent_skills.exists());
+                    if parent_skills.exists() {
+                        return Some(parent_skills);
+                    }
+                    current = parent;
+                } else {
+                    break;
+                }
+            }
+        }
+    }
+
+    // 5. Fallback to current working directory/skills (may not exist)
+    let fallback = std::env::current_dir()
         .ok()
-        .map(|cwd| cwd.join("skills"))
+        .map(|cwd| cwd.join("skills"));
+    eprintln!("[default_skills_dir] Fallback to: {:?}", fallback);
+    fallback
 }
 
 impl KernelConfig {
@@ -334,7 +421,7 @@ impl KernelConfig {
         Self {
             database_url: default_database_url(),
             llm,
-            skills_dir: None,
+            skills_dir: default_skills_dir(),
         }
     }
 }