fix: Resolve filter parsing and default directory errors

Co-authored-by: aider (openai/andrew/openrouter/sonoma-sky-alpha) <aider@aider.chat>

src/config.rs

@@ -395,6 +395,15 @@ impl Settings {
         }
     }
 
+    pub fn default_dir() -> anyhow::Result<PathBuf> {
+        let mut path = dirs::home_dir()
+            .ok_or_else(|| anyhow::anyhow!("No home directory found"))?;
+        path.push(".keep");
+        if !path.exists() {
+            std::fs::create_dir_all(&path)?;
+        }
+        Ok(path)
+    }
 
     /// Get server password from password_file or directly from config if configured
     pub fn get_server_password(&self) -> Result<Option<String>> {