Refactor: Migrate unwrap calls to AppError in MCP handlers

server/src/handlers/git.rs

@@ -21,10 +21,10 @@ impl McpTool for GetActiveWorktreeContextHandler {
         )
     }
 
-    async fn execute(&self, _args: Value, _state: Arc<MemoryState>) -> Result<String, String> {
-        let result = tokio::task::spawn_blocking(move || -> Result<Value, String> {
+    async fn execute(&self, _args: Value, _state: Arc<MemoryState>) -> crate::error::Result<String> {
+        let result = tokio::task::spawn_blocking(move || -> crate::error::Result<serde_json::Value> {
             let cwd = env::current_dir().map_err(|e| e.to_string())?;
-            let repo = git2::Repository::discover(&cwd).map_err(|e| format!("Not in a git repository: {}", e))?;
+            let repo = git2::Repository::discover(&cwd).map_err(|e| crate::error::AppError::Internal(format!("Not in a git repository: {}", e)))?;
             
             let mut branch_name = String::new();
             if let Ok(head) = repo.head()
@@ -70,8 +70,8 @@ impl McpTool for GetActiveWorktreeContextHandler {
             }))
         })
         .await
-        .map_err(|e| format!("Task panic: {}", e))??;
+        .map_err(|e| crate::error::AppError::Internal(format!("Task panic: {}", e)))??;
 
-        Ok(serde_json::to_string_pretty(&result).unwrap())
+        Ok::<String, crate::error::AppError>(serde_json::to_string_pretty(&result)?)
     }
 }