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/model/settings.rs

@@ -35,6 +35,8 @@ pub struct Settings {
     pub review_enabled: bool,
     pub review_max_lessons_per_run: usize,
     pub adaptive_review_max_skip: u32,
+    pub verify_command: Option<String>,
+    pub verify_timeout_ms: u64,
     pub workflow_max_concurrency: usize,
     pub session_archive_enabled: bool,
 }
@@ -51,6 +53,8 @@ impl Default for Settings {
             review_enabled: true,
             review_max_lessons_per_run: 5,
             adaptive_review_max_skip: 3,
+            verify_command: None,
+            verify_timeout_ms: 30000,
             workflow_max_concurrency: 5,
             session_archive_enabled: true,
         }