feat: add ecc2 markdown directory memory connector

ecc2/src/config/mod.rs

@@ -109,6 +109,7 @@ pub enum MemoryConnectorConfig {
     JsonlFile(MemoryConnectorJsonlFileConfig),
     JsonlDirectory(MemoryConnectorJsonlDirectoryConfig),
     MarkdownFile(MemoryConnectorMarkdownFileConfig),
+    MarkdownDirectory(MemoryConnectorMarkdownDirectoryConfig),
     DotenvFile(MemoryConnectorDotenvFileConfig),
 }
 
@@ -140,6 +141,16 @@ pub struct MemoryConnectorMarkdownFileConfig {
     pub default_observation_type: Option<String>,
 }
 
+#[derive(Debug, Clone, Default, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(default)]
+pub struct MemoryConnectorMarkdownDirectoryConfig {
+    pub path: PathBuf,
+    pub recurse: bool,
+    pub session_id: Option<String>,
+    pub default_entity_type: Option<String>,
+    pub default_observation_type: Option<String>,
+}
+
 #[derive(Debug, Clone, Default, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(default)]
 pub struct MemoryConnectorDotenvFileConfig {
@@ -1382,6 +1393,43 @@ default_observation_type = "external_note"
         }
     }
 
+    #[test]
+    fn memory_markdown_directory_connectors_deserialize_from_toml() {
+        let config: Config = toml::from_str(
+            r#"
+[memory_connectors.workspace_notes]
+kind = "markdown_directory"
+path = "/tmp/hermes-memory"
+recurse = true
+session_id = "latest"
+default_entity_type = "note_section"
+default_observation_type = "external_note"
+"#,
+        )
+        .unwrap();
+
+        let connector = config
+            .memory_connectors
+            .get("workspace_notes")
+            .expect("connector should deserialize");
+        match connector {
+            crate::config::MemoryConnectorConfig::MarkdownDirectory(settings) => {
+                assert_eq!(settings.path, PathBuf::from("/tmp/hermes-memory"));
+                assert!(settings.recurse);
+                assert_eq!(settings.session_id.as_deref(), Some("latest"));
+                assert_eq!(
+                    settings.default_entity_type.as_deref(),
+                    Some("note_section")
+                );
+                assert_eq!(
+                    settings.default_observation_type.as_deref(),
+                    Some("external_note")
+                );
+            }
+            _ => panic!("expected markdown_directory connector"),
+        }
+    }
+
     #[test]
     fn memory_dotenv_file_connectors_deserialize_from_toml() {
         let config: Config = toml::from_str(