feat: enhance lesson management and review system

- Added LessonAccept and LessonReject actions to manage lesson outcomes.
- Implemented probe for build/test verification before triggering reviews.
- Introduced a mechanism for recording shadow hits and evaluating trials in the ReviewSystem.
- Enhanced lesson structure with additional fields for scope, snippets, and provenances.
- Updated command parsing to include lesson acceptance and rejection commands.
- Improved session state management with staleness sweeps and retrospective creation.
- Enhanced UI to display detailed usage statistics and quality trends.

src/app/runtime/commands.rs

@@ -28,6 +28,12 @@ pub fn apply_command(command: Command) -> Vec<Action> {
         Command::LessonList => {
             vec![Action::OpenOverlay(Overlay::Learning)]
         }
+        Command::LessonAccept(name) => {
+            vec![Action::LessonAccept { name }]
+        }
+        Command::LessonReject(name) => {
+            vec![Action::LessonReject { name }]
+        }
         Command::Mode(mode) => {
             vec![Action::SwitchMode(mode)]
         }