feat: add lesson export and import functionality

- Implemented `LessonExport` and `LessonImport` actions in the action module.
- Added corresponding command parsing for lesson export and import.
- Created functions to handle lesson export and import in the memory module.
- Updated state management to reflect changes after lesson operations.
- Introduced deferred operations for handling asynchronous tasks in the event loop.
- Enhanced the tool execution context to include graduated checks for file operations.
- Added OAuth support with PKCE for secure authorization flows.
- Implemented a loopback server for handling OAuth redirects.
- Refactored various modules to improve code organization and maintainability.

src/main.rs

@@ -127,6 +127,8 @@ fn _wire_models() -> Result<()> {
     let _ = model::session::Session::load("sid", base_dir);
     let _ = model::session::Session::list(base_dir);
     let _ = model::memory::create_retrospective(base_dir, &_session, &[_mem]);
+    let _ = model::memory::export_lessons(base_dir, &std::path::PathBuf::from("/tmp/test-lessons.json"));
+    let _ = model::memory::import_lessons(base_dir, &std::path::PathBuf::from("/tmp/test-lessons.json"));
 
     // OpenRouterClient
     let _orc = service::openrouter::OpenRouterClient::new("key".to_string(), "model".to_string());
@@ -134,6 +136,23 @@ fn _wire_models() -> Result<()> {
     let _ = &_orc.model;
     let _ = _orc.chat(&[]);
 
+    // OAuth module
+    {
+        use service::oauth::CodeVerifier;
+        use service::oauth::OAuthManager;
+        use service::oauth::OAuthConfig;
+        let _verifier = CodeVerifier::new();
+        let challenge = _verifier.challenge();
+        let _ = challenge.as_str();
+        if let Ok(_server) = service::oauth::LoopbackServer::bind() {
+            let _ = _server.port();
+            let _ = _server.redirect_uri();
+        }
+        let _config = OAuthConfig::default();
+        let _mgr = OAuthManager::new(OAuthConfig::default());
+        let _ = _mgr.build_auth_url("http://localhost:0/callback", "state", challenge.as_str());
+    }
+
     let _ = _mem;
     let _ = _cfg;
     let _ = _provider_cfg;
@@ -191,6 +210,10 @@ fn main() -> Result<()> {
     let _ = &ctx.download_dir;
     let _ = &ctx.dir_cache;
     let _ = &ctx.origin;
+    let _ = &ctx.graduated_checks;
+
+    let _ = tool::GraduatedCheck { name: "test".to_string(), pattern: "test".to_string(), rule: "test".to_string() };
+    let _ = tool::check_graduated_checks("/tmp/test", "content", &[]);
 
     let _tools = tool::all_tools();
     for _t in &_tools {