feat: enhance prompts with detailed programmer description and add workspace tree generation

src/app/runtime/actions/mod.rs

@@ -543,6 +543,36 @@ struct TurnCtx {
     abort_flag: std::sync::Arc<std::sync::atomic::AtomicBool>,
 }
 
+fn generate_workspace_tree(roots: &[std::path::PathBuf]) -> String {
+    let mut out = String::new();
+    out.push_str("Current Workspace Directory Structure:\n");
+    for root in roots {
+        out.push_str(&format!("Root: {}\n", root.display()));
+        let walker = ignore::WalkBuilder::new(root)
+            .hidden(true)
+            .git_ignore(true)
+            .build();
+        let mut count = 0;
+        for result in walker {
+            if let Ok(entry) = result {
+                let path = entry.path();
+                if let Ok(rel) = path.strip_prefix(root) {
+                    if rel.as_os_str().is_empty() { continue; }
+                    let is_dir = entry.file_type().map(|ft| ft.is_dir()).unwrap_or(false);
+                    let prefix = if is_dir { "[DIR] " } else { "      " };
+                    out.push_str(&format!("  {}{}\n", prefix, rel.display()));
+                    count += 1;
+                    if count > 1000 {
+                        out.push_str("  ... (truncated)\n");
+                        break;
+                    }
+                }
+            }
+        }
+    }
+    out
+}
+
 fn archive_message(db: &Option<std::sync::Arc<std::sync::Mutex<rusqlite::Connection>>>, session_id: &str, msg: &ChatMessage) {
     if let Some(ref arc) = db {
         if let Ok(conn) = arc.lock() {
@@ -561,10 +591,12 @@ fn run_agent_turn(
     let mut tool_only_rounds = 0usize;
     let mut prev_shaped = false;
 
+    let tree_info = generate_workspace_tree(&tc.workspace_roots);
     let system_text = format!(
-        "{}\n\n{}",
+        "{}\n\n{}\n\n{}",
         crate::resources::SYSTEM_PROMPT,
         crate::resources::SYSTEM_TOOLS,
+        tree_info
     );
     if !msgs.iter().any(|m| matches!(m.role, crate::dto::chat::message::Role::System)) {
         let sys = ChatMessage::system(system_text);